JP2017015979A - Lubricant supply device, process cartridge, and image forming apparatus - Google Patents

Lubricant supply device, process cartridge, and image forming apparatus Download PDF

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JP2017015979A
JP2017015979A JP2015133757A JP2015133757A JP2017015979A JP 2017015979 A JP2017015979 A JP 2017015979A JP 2015133757 A JP2015133757 A JP 2015133757A JP 2015133757 A JP2015133757 A JP 2015133757A JP 2017015979 A JP2017015979 A JP 2017015979A
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lubricant
remaining amount
solid lubricant
detection
state
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賢二 本城
Kenji Honjo
賢二 本城
新谷 剛史
Takashi Shintani
剛史 新谷
延雄 桑原
Nobuo Kuwabara
延雄 桑原
康広 前畠
Yasuhiro Maehata
康広 前畠
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Ricoh Co Ltd
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Ricoh Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a lubricant supply device that can suppress the occurrence of incorrect detection of the residual amount of a solid lubricant and reduce dead time of the device to be used.SOLUTION: A lubricant residual amount detection means included in a lubricant application device 3 detects the residual amount of a solid lubricant 3b during an operation to apply a lubricant to a photoreceptor 1. When requested to start a lubricant application operation from a control part of a printer body during the residual amount detection, if the value of usage of the solid lubricant 3b is less than 80%, the lubricant residual amount detection means suspends the residual amount detection, and starts the lubricant application operation in response to the start request. Meanwhile, if the value of usage of the solid lubricant 3b is 80% or more, the lubricant residual amount detection means waits for the start of the lubricant application operation in response to the start request until the residual amount detection is completed.SELECTED DRAWING: Figure 5

Description

本発明は、潤滑剤供給装置、これを有したプロセスカートリッジ、及びこれらの少なくともいずれかを備えた画像形成装置に関するものである。   The present invention relates to a lubricant supply device, a process cartridge having the lubricant supply device, and an image forming apparatus including at least one of them.

プリンタ、ファクシミリ、複写機などの画像形成装置において、潤滑剤供給対象としての感光体や中間転写ベルトなどの像担持体の保護や低摩擦化のため像担持体の表面に潤滑剤を供給する潤滑剤供給装置を備えたものが知られている。
例えば、特許文献1には、供給部材で削り取られる固形状潤滑剤(以下、固形潤滑剤という。)の長さが所定値以下であることを検知することで、固形潤滑剤の残量が残り僅かになったことを検知する残量検知手段を備えた潤滑剤供給装置が記載されている。
In image forming apparatuses such as printers, facsimiles, and copiers, lubrication is performed by supplying a lubricant to the surface of the image carrier for protecting the image carrier such as a photosensitive member or an intermediate transfer belt as a lubricant supply target and reducing friction. An apparatus provided with an agent supply device is known.
For example, in Patent Document 1, the remaining amount of solid lubricant remains by detecting that the length of a solid lubricant scraped off by a supply member (hereinafter referred to as solid lubricant) is a predetermined value or less. There is described a lubricant supply device provided with a remaining amount detecting means for detecting that the amount has become small.

特許文献1には、導電性部材からなる潤滑剤保持部材と、これに当接する導電性部材(電極部材)とを有し、次のようにして固形潤滑剤の残量が残り僅かになったことを検知する残量検知手段の例が記載されている。
固形潤滑剤の使用初期には、固形潤滑剤の押圧方向上流側(以下、適宜、高さ方向という。)に設けた潤滑剤保持部材と、押圧方向下流側に成るほど固形潤滑剤の側面から離間するような加工が施された板状の導電性部材と、が当接して導通状態となっている。一方、固形潤滑剤が消費されて高さ方向の長さが減って、固形潤滑剤の量が残り僅かとなると、押圧方向下流側に移動した潤滑剤保持部材と、上記加工が施された導電性部材と、が離間して非導通状態となる。
この残量検知手段の例では、潤滑剤保持部材と導電性部材とが、導通状態から非導通状態に切替わることで、固形潤滑剤の残量が残り僅かになったことを検知する。
Patent Document 1 has a lubricant holding member made of a conductive member and a conductive member (electrode member) in contact with the lubricant holding member, and the remaining amount of the solid lubricant is small as follows. An example of remaining amount detection means for detecting this is described.
In the initial stage of use of the solid lubricant, the lubricant holding member provided on the upstream side in the pressing direction of the solid lubricant (hereinafter referred to as the height direction as appropriate) and the side surface of the solid lubricant as it becomes downstream in the pressing direction. The plate-like conductive member that has been processed so as to be separated from each other is in contact with the conductive member. On the other hand, when the solid lubricant is consumed and the length in the height direction is reduced, and the remaining amount of the solid lubricant becomes small, the lubricant holding member moved to the downstream side in the pressing direction and the conductive material subjected to the above processing The conductive member is separated and becomes non-conductive.
In this example of the remaining amount detecting means, the lubricant holding member and the conductive member are switched from the conducting state to the non-conducting state, thereby detecting that the remaining amount of the solid lubricant is small.

また、次のような残量検知手段の例も記載されている。
固形潤滑剤の使用初期には、固形潤滑剤の押圧方向上流側に設けた導電性部材からなる潤滑剤保持部材と、固形潤滑剤の側面に沿うように設けられた板状の導電性部材からなる電極部材と、が離間して非導通状態となっている。一方、固形潤滑剤が消費されて高さ方向の長さが減って、固形潤滑剤の量が残り僅かとなると、潤滑剤保持部材が板状の電極部材の位置まで移動して、潤滑剤保持部材と板状の電極部材とが接触して導通状態となる。
この残量検知手段の例では、潤滑剤保持部材と電極部材とが、非導通状態から導通状態に切替わることで、固形潤滑剤の残量が残り僅かになったことを検知する。
Further, the following example of the remaining amount detecting means is also described.
In the initial stage of use of the solid lubricant, from the lubricant holding member made of a conductive member provided on the upstream side in the pressing direction of the solid lubricant and the plate-like conductive member provided along the side surface of the solid lubricant Are separated from each other and are in a non-conductive state. On the other hand, when the solid lubricant is consumed and the length in the height direction is reduced, and the remaining amount of the solid lubricant becomes small, the lubricant holding member moves to the position of the plate-like electrode member and holds the lubricant. A member and a plate-shaped electrode member contact and it will be in a conduction | electrical_connection state.
In this example of the remaining amount detecting means, the lubricant holding member and the electrode member are switched from the non-conducting state to the conducting state, thereby detecting that the remaining amount of the solid lubricant is small.

しかし、従来の非導通状態と導通状態との切替わりで検知する構成では、常時通電動作を行い、固形潤滑剤の残量を監視しており、残量を検知するときに、供給部材の回転により固形潤滑剤が収納領域内で振動している状態にある場合がある。このように振動していると、潤滑剤保持部材の固形潤滑剤高さ方向の位置等が微小に変動し、潤滑剤保持部材と導電性部材との接触が不安定となる。
この結果、潤滑剤量が所定量以下にもかかわらず導通状態が検知され潤滑剤量が所定量以上であると誤検知したり、潤滑剤量が所定量以下となっても導通状態が検知されず、潤滑剤量が所定量以上あると誤検知したりする。
However, in the conventional configuration in which the detection is performed by switching between the non-conduction state and the conduction state, the energization operation is always performed and the remaining amount of the solid lubricant is monitored, and when the remaining amount is detected, the supply member is rotated. Thus, the solid lubricant may be in a state of vibrating in the storage area. When vibrated in this manner, the position of the lubricant holding member in the height direction of the solid lubricant slightly fluctuates, and the contact between the lubricant holding member and the conductive member becomes unstable.
As a result, the conduction state is detected even if the lubricant amount is less than the predetermined amount, and it is erroneously detected that the lubricant amount is more than the predetermined amount, or the conduction state is detected even if the lubricant amount is less than the predetermined amount. In other words, it is erroneously detected that the amount of lubricant is greater than a predetermined amount.

上述した課題を解決するために、請求項1に記載の発明は、固形潤滑剤と、該固形潤滑剤の潤滑剤を供給対象に供給する供給部材と、前記固形潤滑剤の残量を検知する残量検知手段とを備えた潤滑剤供給装置において、前記残量検知手段は、前記供給対象への供給動作停止中に残量検知を行い、前記残量検知を開始してから完了するまでの間に、当該潤滑剤供給装置を用いる装置からの次動作の開始要求があった場合、前記固形潤滑剤の残量の変化に相関を持つ値を計数する手段により計数した値が、予め定めた閾値未満であった場合に、前記残量検知を中断し、前記開始要求に応じて前記次動作を開始し、予め定めた閾値以上であった場合に、前記残量検知が完了するまで、前記開始要求に応じた前記次動作の開始を待機させることを特徴とする。   In order to solve the above-described problem, the invention according to claim 1 detects a solid lubricant, a supply member that supplies the solid lubricant to a supply target, and a remaining amount of the solid lubricant. In the lubricant supply device including the remaining amount detecting means, the remaining amount detecting means detects the remaining amount while the supply operation to the supply target is stopped, and from the start of the remaining amount detection to the completion thereof. In the meantime, when there is a request for starting the next operation from a device using the lubricant supply device, the value counted by the means for counting the value correlated with the change in the remaining amount of the solid lubricant is predetermined. When it is less than the threshold, the remaining amount detection is interrupted, and the next operation is started in response to the start request.When the remaining amount is equal to or more than a predetermined threshold, the remaining amount detection is completed. Waiting for the start of the next operation according to the start request To.

本発明によれば、固形潤滑剤の残量の誤検知の発生を抑制できるとともに、用いる装置のデッドタイムを低減できる潤滑剤供給装置を提供できる。   ADVANTAGE OF THE INVENTION According to this invention, while being able to suppress generation | occurrence | production of the misdetection of the residual amount of solid lubricant, the lubricant supply apparatus which can reduce the dead time of the apparatus to be used can be provided.

―実施形態に係るプリンタの概略構成図。A schematic configuration diagram of a printer according to an embodiment. 4つの作像ユニットの内の1つを示す拡大図。The enlarged view which shows one of four image forming units. 実施例1に係る潤滑剤塗布装置に設けた潤滑剤残量検知手段の概略構成図。FIG. 3 is a schematic configuration diagram of a lubricant remaining amount detection unit provided in the lubricant application apparatus according to the first embodiment. 潤滑剤塗布動作停止中、及び潤滑剤塗布動作中における潤滑剤塗布装置の状態の説明図。Explanatory drawing of the state of the lubricant application device during a lubricant application operation stop and during a lubricant application operation. 実施例1に係る潤滑剤塗布装置の固形潤滑剤の残量検知における制御フロー図。FIG. 3 is a control flow diagram in solid lubricant remaining amount detection of the lubricant application device according to the first embodiment. 固形潤滑剤の残量検知のタイミングチャート図。The timing chart figure of the residual amount detection of a solid lubricant. 実施例1に係る固形潤滑剤量の推移とニアエンド検知のタイミングとを示す図。The figure which shows transition of the amount of solid lubricants concerning Example 1, and the timing of near-end detection. 押圧機構の他の構成例である構成例1の概略構成図。The schematic block diagram of the structural example 1 which is another structural example of a press mechanism. 押圧機構の別の構成例である構成例2の概略構成図。The schematic block diagram of the structural example 2 which is another structural example of a press mechanism. 実施例2に係る潤滑剤塗布装置に設けた潤滑剤残量検知手段の概略構成図。FIG. 6 is a schematic configuration diagram of a lubricant remaining amount detection unit provided in a lubricant application device according to a second embodiment. 実施例2に係る潤滑剤塗布装置に設けた潤滑剤残量検知手段の断面説明図。Sectional explanatory drawing of the lubricant residual amount detection means provided in the lubricant application device according to the second embodiment. 実施例3に係る潤滑剤塗布装置に設けた潤滑剤残量検知手段の概略構成図。FIG. 6 is a schematic configuration diagram of a lubricant remaining amount detection unit provided in a lubricant application device according to a third embodiment. 図12のA−A断面説明図。AA sectional explanatory drawing of FIG. 図12のB−B断面説明図。BB cross-section explanatory drawing of FIG. 実施例4に係る潤滑剤塗布装置の固形潤滑剤の残量検知における制御フロー図。FIG. 10 is a control flow diagram for detecting the remaining amount of solid lubricant in the lubricant application apparatus according to the fourth embodiment. 実施例4に係る固形潤滑剤量の推移とニアエンド検知のタイミングとを示す図。The figure which shows transition of the amount of solid lubricants concerning Example 4, and the timing of near-end detection.

以下、本発明を適用した画像形成装置として、電子写真方式のプリンタ(以下、単にプリンタという。)の一実施形態について説明する。
図1は、本実施形態に係るプリンタの概略構成図である。
Hereinafter, as an image forming apparatus to which the present invention is applied, an embodiment of an electrophotographic printer (hereinafter simply referred to as a printer) will be described.
FIG. 1 is a schematic configuration diagram of a printer according to the present embodiment.

このプリンタは、図1に示すように、その内部の略中央に像担持体である中間転写体としての中間転写ベルト56を備えている。中間転写ベルト56は、ポリイミドやポリアミド等の耐熱性材料からなり、中抵抗に調整された基体からなる無端状ベルトで、4つのローラ52,53,54,55に掛け渡して支持され、図中矢印A方向に回転駆動される。中間転写ベルト56の上方にはイエロー(Y)、マゼンタ(M)、シアン(C)、ブラック(K)の各色トナーに対応した4つの作像ユニットが中間転写ベルト56のベルト面に沿って並んでいる。   As shown in FIG. 1, this printer is provided with an intermediate transfer belt 56 as an intermediate transfer member, which is an image carrier, in the approximate center of the inside thereof. The intermediate transfer belt 56 is an endless belt made of a heat-resistant material such as polyimide or polyamide and made of a base body adjusted to a medium resistance, and is supported across four rollers 52, 53, 54, and 55. It is rotationally driven in the direction of arrow A. Above the intermediate transfer belt 56, four image forming units corresponding to yellow (Y), magenta (M), cyan (C), and black (K) toners are arranged along the belt surface of the intermediate transfer belt 56. It is out.

図2は、4つの作像ユニットのうちの1つを示す拡大図である。
いずれの作像ユニットも同様の構成であるので、ここでは、色の区別を示すY、M、C、Kの添え字を省略して説明する。
各作像ユニットには、像担持体としての感光体1を有し、各感光体1の周りには、帯電装置2、現像装置4、潤滑剤塗布装置3、クリーニング装置8がそれぞれ配置されている。帯電装置2は、感光体表面を所望電位(マイナス極性)となるように一様に帯電させる帯電手段であり、現像装置4は、感光体1の表面に形成された静電潜像をマイナス極性に帯電された各色トナーで現像してトナー像とする現像手段である。
FIG. 2 is an enlarged view showing one of the four image forming units.
Since all of the image forming units have the same configuration, the description will be made by omitting Y, M, C, and K subscripts indicating the distinction of colors.
Each image forming unit has a photoreceptor 1 as an image carrier, and around each photoreceptor 1, a charging device 2, a developing device 4, a lubricant application device 3, and a cleaning device 8 are arranged. Yes. The charging device 2 is a charging unit that uniformly charges the surface of the photosensitive member to have a desired potential (negative polarity). The developing device 4 converts the electrostatic latent image formed on the surface of the photosensitive member 1 to negative polarity. And developing means for developing a toner image by developing each color toner charged on the surface.

そして、潤滑剤塗布装置3は、感光体1の表面に潤滑剤を塗布することにより供給し、保護層を形成する潤滑剤供給装置であり、クリーニング装置8は、トナー像転写後の感光体1の表面に残留したトナーを回収するクリーニング手段である。なお、クリーニング装置8により回収され、クリーニング装置8内の搬送経路を通り、本体設置のトナー回収容器に搬送されていく。   The lubricant application device 3 is a lubricant supply device that supplies the surface of the photoreceptor 1 by applying a lubricant to form a protective layer. The cleaning device 8 is the photoreceptor 1 after the toner image is transferred. Cleaning means for collecting toner remaining on the surface of the toner. The toner is collected by the cleaning device 8, passes through a transport path in the cleaning device 8, and is transported to a toner recovery container installed in the main body.

各作像ユニットは、画像形成装置であるプリンタから着脱可能なプロセスカートリッジとして構成されており、感光体1、帯電装置2、現像装置4、クリーニング装置8、及び潤滑剤塗布装置3が一括で交換される構成となっている。   Each image forming unit is configured as a process cartridge that can be attached to and detached from a printer as an image forming apparatus, and the photoconductor 1, the charging device 2, the developing device 4, the cleaning device 8, and the lubricant applying device 3 are replaced at once. It becomes the composition which is done.

また、図1に示すように、4つの作像ユニットの上方には、帯電した各感光体表面に各色の画像データに基づいて露光して露光部分の電位を落とし、静電潜像を書き込む静電潜像形成手段としての露光装置9が備えられている。また、中間転写ベルト56を挟んで、各感光体1と対向する位置には、感光体1上に形成されたトナー像を中間転写ベルト56上に一次転写する転写手段としての一次転写ローラ51がそれぞれ配置されている。一次転写ローラ51は、一次転写電源に接続されており、所定の電圧が印加される。   Further, as shown in FIG. 1, above the four image forming units, the surface of each charged photoreceptor is exposed based on the image data of each color, the potential of the exposed portion is lowered, and an electrostatic latent image is written. An exposure device 9 is provided as an electrostatic latent image forming unit. A primary transfer roller 51 serving as a transfer unit that primarily transfers the toner image formed on the photoconductor 1 onto the intermediate transfer belt 56 is located at a position facing each photoconductor 1 with the intermediate transfer belt 56 interposed therebetween. Each is arranged. The primary transfer roller 51 is connected to a primary transfer power source, and a predetermined voltage is applied thereto.

中間転写ベルト56のローラ52で支持された部分の外側には、二次転写手段としての二次転写ローラ61が圧接されている。二次転写ローラ61は、二次転写電源に接続されており、所定の電圧が印加される。二次転写ローラ61と中間転写ベルト56との接触部が二次転写部であり、中間転写ベルト56上のトナー像が記録材としての転写紙に転写される。二次転写部の図中左側には、転写紙上のトナー像を転写紙に定着させる定着装置70が備えられている。定着装置70は、内部にハロゲンヒータを有する加熱ローラ72及び定着ローラ73に巻き掛けられた無端状の定着ベルト71と、定着ベルト71を介して定着ローラ73に対向、圧接して配置される加圧ローラ74とから構成されている。プリンタの下部には、転写紙を載置し、二次転写部に向けて転写紙を送り出す給紙装置が備えられている。   A secondary transfer roller 61 as a secondary transfer unit is pressed against the outside of the portion of the intermediate transfer belt 56 supported by the roller 52. The secondary transfer roller 61 is connected to a secondary transfer power source and is applied with a predetermined voltage. A contact portion between the secondary transfer roller 61 and the intermediate transfer belt 56 is a secondary transfer portion, and the toner image on the intermediate transfer belt 56 is transferred onto a transfer sheet as a recording material. A fixing device 70 for fixing the toner image on the transfer paper to the transfer paper is provided on the left side of the secondary transfer portion in the drawing. The fixing device 70 includes a heating roller 72 having a halogen heater therein and an endless fixing belt 71 wound around the fixing roller 73, and a heating roller 72 disposed opposite to the fixing roller 73 via the fixing belt 71. And a pressure roller 74. A paper feeding device for placing the transfer paper and feeding the transfer paper toward the secondary transfer unit is provided below the printer.

そして、中間転写ベルト56上には、各作像ユニットの感光体1からイエロー、マゼンタ、シアン、ブラックのトナー像が順次転写されていく。このとき各色の作像動作は、そのトナー像が中間転写ベルト56上で同じ位置に重ねて転写されるように、回転方向上流側から下流側にかけてタイミングがずらされている。中間転写ベルト56上に形成されたトナー画像は、二次転写部の位置まで搬送され、給紙装置からタイミングを合わせて搬送されてきた転写紙上に二次転写される。中間転写ベルト56上に残留した二次転写後のトナーは中間転写部材のクリーニング装置により回収され、作像ユニットのクリーニング装置8と同様に、本体設置のトナー回収容器に搬送される構成となっている。トナー像が二次転写された転写紙は、定着装置70に搬送され熱定着されて、排紙ローラにより排紙される。   On the intermediate transfer belt 56, yellow, magenta, cyan, and black toner images are sequentially transferred from the photoreceptor 1 of each image forming unit. At this time, the image forming operation of each color is shifted in timing from the upstream side to the downstream side in the rotation direction so that the toner image is transferred to the same position on the intermediate transfer belt 56. The toner image formed on the intermediate transfer belt 56 is transported to the position of the secondary transfer portion, and is secondarily transferred onto the transfer paper transported in time from the paper feeding device. The toner after the secondary transfer remaining on the intermediate transfer belt 56 is collected by a cleaning device for the intermediate transfer member, and is transported to a toner collecting container installed in the main body similarly to the cleaning device 8 of the image forming unit. Yes. The transfer sheet on which the toner image has been secondarily transferred is conveyed to the fixing device 70, thermally fixed, and discharged by a discharge roller.

感光体1は、有機感光体であり、ポリカーボネート系の樹脂で表面保護層が形成されている。帯電装置2は、帯電部材として導電性芯金の外側に中抵抗の弾性層を被覆して構成される帯電ローラ2aを備える。帯電ローラ2aは、電源に接続されており、所定の電圧が印加される。帯電ローラ2aは、感光体1に対して微小な間隙をもって配設される。この微小な間隙は、例えば、帯電ローラ2aの両端部の非画像形成領域に一定の厚みを有するスペーサ部材を巻き付けるなどして、スペーサ部材の表面を感光体1表面に当接させることで、設定することができる。   The photoreceptor 1 is an organic photoreceptor, and a surface protective layer is formed of a polycarbonate-based resin. The charging device 2 includes a charging roller 2a configured by covering a conductive cored bar with a medium resistance elastic layer as a charging member. The charging roller 2a is connected to a power source and is applied with a predetermined voltage. The charging roller 2 a is disposed with a small gap with respect to the photoreceptor 1. The minute gap is set by, for example, winding a spacer member having a certain thickness around the non-image forming regions at both ends of the charging roller 2a to bring the surface of the spacer member into contact with the surface of the photoreceptor 1. can do.

現像装置4は、感光体1と対向する位置に、内部に磁界発生手段を備える現像剤担持体としての現像スリーブ4aが配置されている。現像スリーブ4aの下方には、トナーボトルから投入されるトナーを現像剤と混合し、攪拌しながら現像スリーブ4aへ汲み上げるための2つのスクリュー4bが備えられている。現像スリーブ4aによって汲み上げられるトナーと磁性キャリアからなる現像剤は、ドクターブレードによって所定の現像剤層の厚みに規制され、現像スリーブ4aに担持される。現像スリーブ4aは、感光体1との対向位置において同方向に移動しながら、現像剤を担持搬送し、トナーを感光体1上の静電潜像部分に供給する。なお、図2には、二成分現像方式の現像装置4の構成を示したが、これに限るものではなく、一成分現像方式の現像装置であっても適用可能である。   In the developing device 4, a developing sleeve 4 a as a developer carrying member provided with a magnetic field generating means is disposed at a position facing the photoconductor 1. Below the developing sleeve 4a, there are provided two screws 4b for mixing the toner charged from the toner bottle with the developer and pumping the toner into the developing sleeve 4a while stirring. The developer composed of the toner and the magnetic carrier pumped up by the developing sleeve 4a is regulated to a predetermined developer layer thickness by a doctor blade and is carried on the developing sleeve 4a. The developing sleeve 4a carries and conveys the developer while moving in the same direction at a position facing the photoconductor 1, and supplies toner to the electrostatic latent image portion on the photoconductor 1. Although FIG. 2 shows the configuration of the developing device 4 of the two-component developing system, the invention is not limited to this, and the developing device of the one-component developing system can also be applied.

潤滑剤塗布装置3は、固定されたケースに収容された固形潤滑剤3bと、固形潤滑剤3bから削り取った粉体状の潤滑剤を感光体1の表面に塗布する塗布手段を構成する供給部材としての塗布ローラ3aとを備える。塗布ローラ3aは、ブラシローラ、ウレタン状発泡ローラを用いることができる。塗布ローラ3aとして、ブラシローラを用いる場合は、ナイロン、アクリル等の樹脂にカーボンブラック等の抵抗制御材料を添加して体積抵抗率1×10Ωcm以上、1×10Ωcm以下の範囲内に調整された材料で形成されたブラシローラが好適である。塗布ローラ3aの回転方向は、感光体1に対してカウンター方向、すなわち、感光体1と塗布ローラ3aとの当接部において、塗布ローラ3aの表面移動方向が、感光体1の表面移動方向と逆方向である。なお、塗布ローラ3aの回転方向を、感光体1に対して連れ回り方向にしてもよい。 The lubricant application device 3 includes a solid lubricant 3b housed in a fixed case, and a supply member that constitutes application means for applying a powdery lubricant scraped from the solid lubricant 3b to the surface of the photoreceptor 1. As an application roller 3a. The application roller 3a can be a brush roller or a urethane foam roller. When a brush roller is used as the application roller 3a, a resistance control material such as carbon black is added to a resin such as nylon or acrylic, and the volume resistivity falls within the range of 1 × 10 3 Ωcm or more and 1 × 10 8 Ωcm or less. A brush roller formed of a conditioned material is preferred. The rotation direction of the application roller 3a is the counter direction with respect to the photoreceptor 1, that is, the surface movement direction of the application roller 3a is the surface movement direction of the photoreceptor 1 at the contact portion between the photoreceptor 1 and the application roller 3a. The reverse direction. Note that the rotation direction of the application roller 3 a may be a rotation direction with respect to the photoreceptor 1.

固形潤滑剤3bは、直方体状に形成されており、後述する押圧機構3cにより塗布ローラ3a側に押圧されている。固形潤滑剤3bの潤滑剤としては、少なくとも脂肪酸金属塩を含有する潤滑剤を用いる。脂肪酸金属塩としては、例えば、フッ素系樹脂、ステアリン酸亜鉛、ステアリン酸カルシウム、ステアリン酸バリウム、ステアリン酸アルミニウム、ステアリン酸マグネシウムなどのラメラ結晶構造を持つ脂肪酸金属塩等の物質を使用することができる。また、ラウロイルリジン、モノセチルリン酸エステルナトリウム亜鉛塩、ラウロイルタウリンカルシウムなどの物質も使用することができる。   The solid lubricant 3b is formed in a rectangular parallelepiped shape and is pressed toward the application roller 3a by a pressing mechanism 3c described later. As the lubricant of the solid lubricant 3b, a lubricant containing at least a fatty acid metal salt is used. As the fatty acid metal salt, for example, a substance such as a fatty acid metal salt having a lamellar crystal structure such as fluorine resin, zinc stearate, calcium stearate, barium stearate, aluminum stearate, magnesium stearate, or the like can be used. Substances such as lauroyl lysine, monocetyl phosphate sodium zinc salt, lauroyl taurine calcium and the like can also be used.

これらの脂肪酸金属塩のうち、特にステアリン酸亜鉛を用いることが好ましい。これは、ステアリン酸亜鉛が、感光体1表面上での伸展性が非常によく、しかも吸湿性が低く、さらに湿度が変化しても潤滑性が損なわれ難い特性を有しているためである。よって、環境変化に影響されにくく感光体表面を保護する能力の高い皮膜化された潤滑剤の保護層を形成することができ、良好に感光体表面を保護できる。また、潤滑性が損なわれ難い特性を有していることで、クリーニング不良の低減効果を良好に得ることができる。また、これらの脂肪酸金属塩の他に、シリコーンオイルやフッ素系オイル、天然ワックスなどの液状の材料、ガス状にした材料を外添法として添加することもできる。   Of these fatty acid metal salts, it is particularly preferable to use zinc stearate. This is because zinc stearate has very good extensibility on the surface of the photoreceptor 1 and has low hygroscopicity, and even when the humidity changes, the lubricity is not easily lost. . Therefore, it is possible to form a coating layer of a lubricant having a high ability to protect the surface of the photoconductor which is not easily affected by environmental changes, and the surface of the photoconductor can be well protected. Moreover, since it has the characteristic that lubricity is hard to be impaired, the effect of reducing cleaning defects can be obtained satisfactorily. In addition to these fatty acid metal salts, liquid materials such as silicone oil, fluorine oil, and natural wax, and gaseous materials can be added as an external addition method.

また、固形潤滑剤3bの潤滑剤は、無機潤滑剤である窒化ホウ素を含むことが好ましい。窒化ホウ素の結晶構造としては、六方晶系の低圧相のもの(h−BN)や、立方晶系の高圧相(c−BN)等を挙げることができる。これらの構造の窒化ホウ素のうち、六方晶系の低圧相の窒化ホウ素の結晶は層状の構造を有しており、容易に劈開する物質である。このため、摩擦係数は400°C近くまで約0.2以下を維持でき、放電により特性が変化し難く、放電を受けても他の潤滑剤に比べて潤滑性が失われることがない。
このような窒化ホウ素を添加することで、感光体1表面に供給されて薄膜化された潤滑剤が、帯電装置2や一次転写ローラ51の作動時に発生する放電によって早期に劣化することはない。
Moreover, it is preferable that the lubricant of the solid lubricant 3b contains boron nitride which is an inorganic lubricant. Examples of the crystal structure of boron nitride include a hexagonal low-pressure phase (h-BN) and a cubic high-pressure phase (c-BN). Among these boron nitrides, hexagonal low-pressure phase boron nitride crystals have a layered structure and are easily cleaved. For this reason, the friction coefficient can be maintained at about 0.2 or less up to close to 400 ° C., the characteristics hardly change due to the discharge, and the lubricity is not lost as compared with other lubricants even when subjected to the discharge.
By adding such boron nitride, the lubricant supplied to the surface of the photoreceptor 1 and thinned does not deteriorate early due to the discharge generated when the charging device 2 or the primary transfer roller 51 is operated.

窒化ホウ素は、放電により特性が変化し難く、放電を受けても、他の潤滑剤に比べて潤滑性が失われることがない。しかも、感光体1の感光体層が放電により酸化、蒸発してしまうことを防止することもできる。また、窒化ホウ素は、わずかな添加量でも、その潤滑性を発揮できるので、帯電ローラ2aなどへの潤滑剤付着による不具合や、クリーニングブレード8aのブレード鳴きに対して有効である。   Boron nitride does not easily change its characteristics due to discharge, and even when subjected to discharge, lubricity is not lost compared to other lubricants. Moreover, it is possible to prevent the photosensitive layer of the photosensitive member 1 from being oxidized and evaporated by discharge. Further, since boron nitride can exhibit its lubricity even with a slight addition amount, it is effective for problems caused by adhesion of lubricant to the charging roller 2a and the like and blade noise of the cleaning blade 8a.

本実施形態の固形潤滑剤3bは、ステアリン酸亜鉛と窒化ホウ素とを含有した潤滑剤原料を圧縮成型したものを用いた。なお、固形潤滑剤3bの成型方法は、これに限定されることはなく、溶融成型などの他の成型方法を採用してもよい。これにより、上述したステアリン酸亜鉛の効果と上述した窒化ホウ素窒の効果とを得ることができる。   As the solid lubricant 3b of this embodiment, a material obtained by compression molding a lubricant raw material containing zinc stearate and boron nitride was used. The molding method of the solid lubricant 3b is not limited to this, and other molding methods such as melt molding may be employed. Thereby, the effect of the zinc stearate mentioned above and the effect of the boron nitride nitrogen mentioned above can be acquired.

固形潤滑剤3bは塗布ローラ3aによって削り取られ消耗し、経時的にその厚みが減少するが、押圧機構3cにより押圧されているために常時、塗布ローラ3aに当接している。塗布ローラ3aは、回転しながら削り取った潤滑剤を感光体表面に塗布する。その後、感光体1の表面とクリーニングブレード8aとの接触により、塗布された潤滑剤が押し広げられて薄膜状になる。これにより、感光体1の表面の摩擦係数が低下する。なお、感光体1の表面に付着した潤滑剤の膜は非常に薄いため、帯電ローラ2aによる帯電を阻害することはない。   The solid lubricant 3b is scraped off and consumed by the application roller 3a, and the thickness thereof decreases with time. However, since the solid lubricant 3b is pressed by the pressing mechanism 3c, the solid lubricant 3b is always in contact with the application roller 3a. The application roller 3a applies the lubricant scraped off while rotating to the surface of the photoreceptor. Thereafter, the applied lubricant is spread by contact between the surface of the photosensitive member 1 and the cleaning blade 8a to form a thin film. As a result, the coefficient of friction of the surface of the photoreceptor 1 is reduced. Note that the lubricant film attached to the surface of the photoreceptor 1 is very thin and does not hinder charging by the charging roller 2a.

クリーニング装置8は、クリーニング部材としてのクリーニングブレード8a、支持部材8b、トナー回収コイル8cを備える。クリーニングブレード8aは、ウレタンゴム、シリコーンゴム等のゴムを板状に形成してなり、そのエッジが感光体1表面に当接するようにして設けられ、転写後に残留する感光体1上のトナーを除去する。クリーニングブレード8aは、金属、プラスチック、セラミック等からなる支持部材8bに貼着されて支持され、感光体1表面に対し所定の角度で設置される。なお、クリーニング部材としては、クリーニングブレードのほか、クリーニングブラシなどの公知のものを広く利用することができる。   The cleaning device 8 includes a cleaning blade 8a as a cleaning member, a support member 8b, and a toner recovery coil 8c. The cleaning blade 8a is formed by forming a rubber such as urethane rubber or silicone rubber into a plate shape, and the edge of the cleaning blade 8a is in contact with the surface of the photoconductor 1 to remove the toner on the photoconductor 1 remaining after transfer. To do. The cleaning blade 8 a is attached to and supported by a support member 8 b made of metal, plastic, ceramic or the like, and is installed at a predetermined angle with respect to the surface of the photoreceptor 1. In addition to the cleaning blade, a known member such as a cleaning brush can be widely used as the cleaning member.

本実施形態において、潤滑剤塗布装置3は、クリーニング装置8よりも下流側に配置される。潤滑剤塗布装置3によって感光体1表面に塗布された潤滑剤は、その後に均しブレード8dが感光体表面を摺擦することで引き延ばし、感光体1の表面に塗布された潤滑剤の塗布ムラをおおまかに均すことができる。
また、この潤滑剤塗布装置3には、詳しくは後述する供給部材で削り取られる固形潤滑剤の長さ(固形潤滑剤3bの押圧方向の高さ)が所定値以下であることを検知することで、固形潤滑剤3bの残量が残り僅かになったことを検知する残量検知手段を備えている。
In the present embodiment, the lubricant application device 3 is disposed on the downstream side of the cleaning device 8. The lubricant applied to the surface of the photoreceptor 1 by the lubricant application device 3 is then stretched by the leveling blade 8d sliding on the surface of the photoreceptor, and uneven application of the lubricant applied to the surface of the photoreceptor 1 is performed. Can be roughly leveled.
Further, the lubricant application device 3 detects in detail that the length of the solid lubricant (height in the pressing direction of the solid lubricant 3b) scraped off by a supply member, which will be described later, is a predetermined value or less. And a remaining amount detecting means for detecting that the remaining amount of the solid lubricant 3b has become small.

ここで、従来の残量検知手段を備えた潤滑剤供給装置としては、次のようなものが挙げられる。
特許文献1には、導電性部材からなる潤滑剤保持部材と、これに当接する導電性部材(電極部材)とを有し、次のようにして固形潤滑剤の残量が残り僅かになったことを検知する残量検知手段の例が記載されている。
固形潤滑剤の使用初期には、固形潤滑剤の押圧方向上流側(以下、適宜、高さ方向という。)に設けた潤滑剤保持部材と、押圧方向下流側に成るほど固形潤滑剤の側面から離間するような加工が施された板状の導電性部材と、が当接して導通状態となっている。一方、固形潤滑剤が消費されて高さ方向の長さが減って、固形潤滑剤の量が残り僅かとなると、押圧方向下流側に移動した潤滑剤保持部材と、上記加工が施された導電性部材と、が離間して非導通状態となる。
この残量検知手段の例では、潤滑剤保持部材と導電性部材とが、導通状態から非導通状態に切替わることで、固形潤滑剤の残量が残り僅かになったことを検知する。
Here, the following is mentioned as a lubricant supply apparatus provided with the conventional residual amount detection means.
Patent Document 1 has a lubricant holding member made of a conductive member and a conductive member (electrode member) in contact with the lubricant holding member, and the remaining amount of the solid lubricant is small as follows. An example of remaining amount detection means for detecting this is described.
In the initial stage of use of the solid lubricant, the lubricant holding member provided on the upstream side in the pressing direction of the solid lubricant (hereinafter referred to as the height direction as appropriate) and the side surface of the solid lubricant as it becomes downstream in the pressing direction. The plate-like conductive member that has been processed so as to be separated from each other is in contact with the conductive member. On the other hand, when the solid lubricant is consumed and the length in the height direction is reduced, and the remaining amount of the solid lubricant becomes small, the lubricant holding member moved to the downstream side in the pressing direction and the conductive material subjected to the above processing The conductive member is separated and becomes non-conductive.
In this example of the remaining amount detecting means, the lubricant holding member and the conductive member are switched from the conducting state to the non-conducting state, thereby detecting that the remaining amount of the solid lubricant is small.

また、次のような残量検知手段の例も記載されている。
固形潤滑剤の使用初期には、固形潤滑剤の押圧方向上流側に設けた導電性部材からなる潤滑剤保持部材と、固形潤滑剤の側面に沿うように設けられた板状の導電性部材からなる電極部材と、が離間して非導通状態となっている。一方、固形潤滑剤が消費されて高さ方向の長さが減って、固形潤滑剤の量が残り僅かとなると、潤滑剤保持部材が板状の電極部材の位置まで移動して、潤滑剤保持部材と板状の電極部材とが接触して導通状態となる。
この残量検知手段の例では、潤滑剤保持部材と電極部材とが、非導通状態から導通状態に切替わることで、固形潤滑剤の残量が残り僅かになったことを検知する。
Further, the following example of the remaining amount detecting means is also described.
In the initial stage of use of the solid lubricant, from the lubricant holding member made of a conductive member provided on the upstream side in the pressing direction of the solid lubricant and the plate-like conductive member provided along the side surface of the solid lubricant Are separated from each other and are in a non-conductive state. On the other hand, when the solid lubricant is consumed and the length in the height direction is reduced, and the remaining amount of the solid lubricant becomes small, the lubricant holding member moves to the position of the plate-like electrode member and holds the lubricant. A member and a plate-shaped electrode member contact and it will be in a conduction | electrical_connection state.
In this example of the remaining amount detecting means, the lubricant holding member and the electrode member are switched from the non-conducting state to the conducting state, thereby detecting that the remaining amount of the solid lubricant is small.

しかし、従来の非導通状態と導通状態との切替わりで検知する構成では、常時通電動作を行い、固形潤滑剤の残量を監視しており、残量を検知するときに、供給部材の回転により固形潤滑剤が収納領域内で振動している状態にある場合がある。このように振動していると、潤滑剤保持部材の固形潤滑剤高さ方向の位置等が微小に変動し、潤滑剤保持部材と導電性部材との接触が不安定となる。
この結果、潤滑剤量が所定量以下にもかかわらず導通状態が検知され潤滑剤量が所定量以上であると誤検知したり、潤滑剤量が所定量以下となっても導通状態が検知されず、潤滑剤量が所定量以上あると誤検知したりする。
However, in the conventional configuration in which the detection is performed by switching between the non-conduction state and the conduction state, the energization operation is always performed and the remaining amount of the solid lubricant is monitored, and when the remaining amount is detected, the supply member is rotated. Thus, the solid lubricant may be in a state of vibrating in the storage area. When vibrated in this manner, the position of the lubricant holding member in the height direction of the solid lubricant slightly fluctuates, and the contact between the lubricant holding member and the conductive member becomes unstable.
As a result, the conduction state is detected even if the lubricant amount is less than the predetermined amount, and it is erroneously detected that the lubricant amount is more than the predetermined amount, or the conduction state is detected even if the lubricant amount is less than the predetermined amount. In other words, it is erroneously detected that the amount of lubricant is greater than a predetermined amount.

一方、発明者らは、潤滑剤の供給動作停止中に、固形潤滑剤の残量検知を行う構成を開発したが、残量検知の開始から完了までの間に時間を要するため、その期間は機械動作禁止となってしまい、画像形成動作を行えないデッドタイムが生じるおそれがあった。
そこで、発明者らは、固形潤滑剤の残量の誤検知の発生を抑制できるとともに、画像形成装置のデッドタイムを低減できる潤滑剤供給装置を提供できないか検討し、後述する潤滑剤塗布装置3で例示するような構成を見出した。
次に、本実施形態の、固形潤滑剤の残量を検知する残量検知手段である潤滑剤残量検知手段を備えた潤滑剤塗布装置3について、複数の実施例を挙げて、より詳細に説明する。
On the other hand, the inventors have developed a configuration for detecting the remaining amount of the solid lubricant while the supply operation of the lubricant is stopped, but since it takes time from the start to the completion of the remaining amount detection, the period is The machine operation is prohibited, and there is a possibility that a dead time in which the image forming operation cannot be performed may occur.
Accordingly, the inventors have examined whether a lubricant supply device that can suppress the occurrence of erroneous detection of the remaining amount of the solid lubricant and can reduce the dead time of the image forming apparatus can be provided, and a lubricant application device 3 described later. The configuration as illustrated in Fig. 1 was found.
Next, with respect to the lubricant application device 3 provided with the lubricant remaining amount detecting means which is the remaining amount detecting means for detecting the remaining amount of the solid lubricant of the present embodiment, a plurality of examples will be given in more detail. explain.

(実施例1)
まず、本実施形態の潤滑剤塗布装置3の実施例1について説明する。
図3は、本実施例に係る潤滑剤塗布装置3に設けた潤滑剤残量検知手段の概略構成図であり、図3(a)が、固形潤滑剤3bの使用初期状態を示す概略構成図、図3(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示す概略構成図である。
Example 1
First, Example 1 of the lubricant application device 3 of the present embodiment will be described.
FIG. 3 is a schematic configuration diagram of a lubricant remaining amount detecting means provided in the lubricant application device 3 according to the present embodiment, and FIG. 3A is a schematic configuration diagram showing an initial use state of the solid lubricant 3b. FIG. 3B is a schematic configuration diagram showing a state in which the solid lubricant 3b remains slightly (near-end state).

本実施例の潤滑剤塗布装置3は、図2に示すように、主に、固形潤滑剤3bと、塗布ローラ3aと、固形潤滑剤3bを塗布ローラ3a側へ押圧する押圧機構3cと、感光体1の表面上に潤滑剤層を形成する潤滑剤層形成部材である均しブレード8dとからなる。
そして、図3に示すように、固形潤滑剤3bの塗布ローラ3aと当接する面(図中下側の面)とは反対側の部分をその長手方向にわたって保持する潤滑剤保持部材3dが設けられている。潤滑剤保持部材3dは、収納ケース3eに塗布ローラ3aに対して接離可能に設けられている。また、固形潤滑剤3bの収納部である収納ケース3eの潤滑剤保持部材3dより図中上部の空間には、潤滑剤保持部材3dを供給部材側へ押圧する押圧機構3cを備えている。
As shown in FIG. 2, the lubricant application device 3 of this embodiment mainly includes a solid lubricant 3b, an application roller 3a, a pressing mechanism 3c that presses the solid lubricant 3b toward the application roller 3a, and a photosensitive. It comprises a leveling blade 8d which is a lubricant layer forming member for forming a lubricant layer on the surface of the body 1.
As shown in FIG. 3, there is provided a lubricant holding member 3d for holding a portion of the solid lubricant 3b opposite to the surface (lower surface in the figure) that contacts the application roller 3a in the longitudinal direction. ing. The lubricant holding member 3d is provided in the storage case 3e so as to be able to contact and separate from the application roller 3a. In addition, a press mechanism 3c that presses the lubricant holding member 3d toward the supply member is provided in a space above the lubricant holding member 3d of the storage case 3e that is a storage portion for the solid lubricant 3b in the drawing.

ここで、固形潤滑剤3b自体は脆く壊れやすいため、金属等の導電性材料から構成させる潤滑剤保持部材3dに接着剤や両面テープを使用して固定している。この潤滑剤保持部材3dを圧縮バネやアーム形状の押圧機構3cを用いて押圧し、塗布ローラ3aに当接配置している。本実施例では、押圧機構3cは、加圧バネ31aを有しており、加圧バネ31aによって、潤滑剤保持部材3dが塗布ローラ3a側に押圧されている。   Here, since the solid lubricant 3b itself is brittle and easily broken, it is fixed to the lubricant holding member 3d made of a conductive material such as metal by using an adhesive or a double-sided tape. The lubricant holding member 3d is pressed using a compression spring or an arm-shaped pressing mechanism 3c, and is placed in contact with the application roller 3a. In this embodiment, the pressing mechanism 3c has a pressure spring 31a, and the lubricant holding member 3d is pressed toward the application roller 3a by the pressure spring 31a.

塗布ローラ3aとしては、ブラシローラやスポンジローラなどを用い、回転可能に潤滑剤塗布装置3に配置して、加圧バネ31aにより押圧され当接配置された固形潤滑剤3b表面を摺擦して粉体状潤滑剤として削り取る。そして、削り取った粉体状潤滑剤を感光体1の表面に当接しながら塗布(供給)する構成としている。
感光体1の表面上に塗布された粉体状潤滑剤は、潤滑剤塗布位置より感光体1回転方向下流側に配置された均しブレード8dによって押圧され、感光体1の表面で均一な層をなすように構成している。
As the application roller 3a, a brush roller, a sponge roller, or the like is used. The application roller 3a is rotatably disposed in the lubricant application device 3, and is rubbed against the surface of the solid lubricant 3b that is pressed and arranged by the pressure spring 31a. Shave off as a powdery lubricant. Then, the scraped powdery lubricant is applied (supplied) while being in contact with the surface of the photoreceptor 1.
The powdery lubricant applied on the surface of the photoreceptor 1 is pressed by a leveling blade 8d disposed downstream of the lubricant application position in the rotational direction of the photoreceptor 1, and is a uniform layer on the surface of the photoreceptor 1. It is configured to make.

また、固形潤滑剤3bの長手方向両端近傍(付近)には、導電性部材からなる電極部材41が設けられている。潤滑剤保持部材3dは、導電性部材で形成されており、電極部材41と潤滑剤保持部材3dは、検知部42に接続されている。検知部42は、検知部42を制御する制御部100に接続されている。検知部42は、電極部材41と潤滑剤保持部材3dとの間に電圧を印加して電気抵抗を計測する。
なお、電極部材41と潤滑剤保持部材3dとで、本実施例の潤滑剤塗布装置3の潤滑剤残量検知手段40に備えた導通検知部を構成している。
これにより、導通検知部の導通状態により固形潤滑剤3bの残量を検知することで、センサ等を潤滑剤供給装置の近傍に配置する必要がなく、省スペースで固形潤滑剤3bの残量検知を行うことができる。
また、潤滑剤塗布動作時には、検知動作を行わないため、固形潤滑剤3bの振動等による断続的な接触での導通による誤検知も防止できるとともに、検知動作を行わない通常時は常に導通しない状態とすることができ、消費電力を低減できる。
Moreover, the electrode member 41 which consists of an electroconductive member is provided in the longitudinal direction both ends vicinity (vicinity) of the solid lubricant 3b. The lubricant holding member 3d is formed of a conductive member, and the electrode member 41 and the lubricant holding member 3d are connected to the detection unit 42. The detection unit 42 is connected to the control unit 100 that controls the detection unit 42. The detection unit 42 measures the electrical resistance by applying a voltage between the electrode member 41 and the lubricant holding member 3d.
The electrode member 41 and the lubricant holding member 3d constitute a continuity detection unit provided in the lubricant remaining amount detection means 40 of the lubricant application device 3 of this embodiment.
Thus, by detecting the remaining amount of the solid lubricant 3b based on the conduction state of the conduction detecting unit, it is not necessary to arrange a sensor or the like in the vicinity of the lubricant supply device, and the remaining amount of the solid lubricant 3b is detected in a small space. It can be performed.
In addition, since the detection operation is not performed during the lubricant application operation, it is possible to prevent erroneous detection due to conduction due to intermittent contact due to vibration of the solid lubricant 3b and the state where the detection operation is not normally performed Power consumption can be reduced.

また、上述したように、電極部材41と潤滑剤保持部材3dとで構成する導通検知部を前記固形潤滑剤の長手方向の複数個所に設けている。
これにより、固形潤滑剤3bの複数箇所での導通を確認することで、固形潤滑剤3bの偏った消費状態においても、固形潤滑剤3bの残量を正常に検知することが可能となる。
また、導通検知部は、固形潤滑剤3bの長手方向の少なくとも両端部近傍に設けられている。
これにより、少なくとも固形潤滑剤3bの両端部2箇所での導通の確認を行うことで、固形潤滑剤3bの偏った消費状態においても、固形潤滑剤3bの残量を正常に検知することが可能となる。
In addition, as described above, the conduction detectors composed of the electrode member 41 and the lubricant holding member 3d are provided at a plurality of locations in the longitudinal direction of the solid lubricant.
Thereby, it is possible to normally detect the remaining amount of the solid lubricant 3b even in the uneven consumption state of the solid lubricant 3b by confirming conduction at a plurality of locations of the solid lubricant 3b.
Moreover, the conduction | electrical_connection detection part is provided in the at least both ends vicinity of the longitudinal direction of the solid lubricant 3b.
Thereby, it is possible to normally detect the remaining amount of the solid lubricant 3b even in the uneven consumption state of the solid lubricant 3b by confirming conduction at least at both ends of the solid lubricant 3b. It becomes.

また、本実施例の潤滑剤残量検知手段40は、電極部材41と潤滑剤保持部材3dから構成される導通検知部の導通状態に基づいて、固形潤滑剤3bの残量が残りわずかの状態であるニアエンド状態を判断する。
これにより、導通状態から、固形潤滑剤3bのニアエンド状態を判断することで、固形潤滑剤3bがエンド状態となる前にニアエンド状態にあることをユーザーに通知することができる。このように通知することで、ユーザーは、プリンタの機械動作を行う予定が無い時に、固形潤滑剤3bの交換を行うことができ、固形潤滑剤3bの交換作業にともなう、プリンタの実質的なダウンタイムを無くことが可能となる。
Further, the lubricant remaining amount detecting means 40 of the present embodiment is a state in which the remaining amount of the solid lubricant 3b is slightly remaining based on the conduction state of the conduction detecting portion constituted by the electrode member 41 and the lubricant holding member 3d. Determine the near-end state.
Thus, by determining the near-end state of the solid lubricant 3b from the conduction state, it is possible to notify the user that the solid lubricant 3b is in the near-end state before the end state. By notifying in this way, the user can replace the solid lubricant 3b when there is no plan to perform the machine operation of the printer, and the printer can be substantially down due to the replacement work of the solid lubricant 3b. Time can be lost.

また、本実施例では固形潤滑剤3bの残量を検知するときのみ、電極部材41と潤滑剤保持部材3dから構成される導通検知部への通電動作を行うように構成している。
これにより、次のような効果を奏することができる。
固形潤滑剤3bの残量検知を通電による導通検知で行う従来の構成では、そのバイアス印加による分の電力量が多くなる。
一方、本実施例の構成では、固形潤滑剤3bの残量を検知するときのみ、導通検知部への通電動作を行うことで、塗布ローラ3aの停止時、感光体1の停止時、プリンタ本体の停止時にのみ固形潤滑剤3bの残量の判断を実行する。このため、固形潤滑剤3bの残量検知を行うときを除き、バイアス印加が不要となるため、電力量の総量を減らす効果がある。
また、プリンタの機械動作時(画像形成動作時)に、固形潤滑剤の残量検知用のバイアス印加動作を行わない構成とすることで、バイアス印加時のノイズによる用いるプリンタの機械動作への影響の懸念がなくなる。
Further, in the present embodiment, only when the remaining amount of the solid lubricant 3b is detected, an energization operation is performed to the conduction detection unit composed of the electrode member 41 and the lubricant holding member 3d.
Thereby, the following effects can be produced.
In the conventional configuration in which the remaining amount of the solid lubricant 3b is detected by conduction detection by energization, the amount of electric power corresponding to the bias application increases.
On the other hand, in the configuration of the present embodiment, only when the remaining amount of the solid lubricant 3b is detected, the energization operation to the conduction detecting unit is performed, so that the application roller 3a is stopped, the photosensitive member 1 is stopped, the printer body Judgment of the remaining amount of the solid lubricant 3b is executed only when the engine is stopped. This eliminates the need to apply a bias except when detecting the remaining amount of the solid lubricant 3b, thus reducing the total amount of power.
In addition, the bias application operation for detecting the remaining amount of solid lubricant is not performed during the machine operation of the printer (at the time of image forming operation), so that the influence on the machine operation of the printer used due to noise at the time of bias application. No worries.

図3(a)に示すように、使用初期においては、潤滑剤保持部材3dは、電極部材41から離間しており、非導通状態である。よって、このとき、検知部42により、電極部材41と潤滑剤保持部材3dとの間に電圧を印加しても電極部材41と潤滑剤保持部材3dとの間に電流が流れず、電気抵抗値の測定が不能な状態である。   As shown in FIG. 3A, in the initial use, the lubricant holding member 3d is separated from the electrode member 41 and is in a non-conductive state. Therefore, at this time, even if a voltage is applied between the electrode member 41 and the lubricant holding member 3d by the detection unit 42, no current flows between the electrode member 41 and the lubricant holding member 3d, and the electric resistance value Measurement is impossible.

固形潤滑剤3bが削られ潤滑剤が消費され固形潤滑剤の高さが低くなっていくと、潤滑剤保持部材3dが塗布ローラ3a側へ近づいていく。そして、図3(b)に示すように、潤滑剤の量が残り僅かなニアエンド(ニア寿命状態)となると、潤滑剤保持部材3dが電極部材41に当接する。潤滑剤保持部材3dが電極部材41に当接すると、潤滑剤保持部材3dと電極部材41とが非導通状態から導通状態に切り替わる。これにより、検知部42が、潤滑剤保持部材3dと電極部材41との間に電圧を印加すると、潤滑剤保持部材3dと電極部材41との間に電流が流れ、検知部42で電気抵抗値が計測される。   When the solid lubricant 3b is scraped, the lubricant is consumed, and the height of the solid lubricant decreases, the lubricant holding member 3d approaches the application roller 3a side. Then, as shown in FIG. 3B, when the amount of lubricant becomes a little near end (near life state), the lubricant holding member 3 d comes into contact with the electrode member 41. When the lubricant holding member 3d comes into contact with the electrode member 41, the lubricant holding member 3d and the electrode member 41 are switched from the non-conductive state to the conductive state. Thus, when the detection unit 42 applies a voltage between the lubricant holding member 3d and the electrode member 41, a current flows between the lubricant holding member 3d and the electrode member 41, and the detection unit 42 causes an electric resistance value. Is measured.

制御部100は、検知部42の測定結果を監視しており、検知部42が検知した電気抵抗値が所定値以下であることを検知したら、制御部100は、固形潤滑剤3bのニアエンド状態と判定する。すなわち、導電性部材からなる潤滑剤保持部材3dの移動を用いて、潤滑剤保持部材3dと塗布ローラ3aの距離がある一定以下になった場合、収納ケース3eに配置した電極部材41と接触することで導通し、固形潤滑剤3bの残量検知を行うことが可能である。
そして、プリンタの操作表示部等に潤滑剤が残り少なくなくなった旨を報知し、利用者であるユーザーに固形潤滑剤3bの交換を促す。また、通信手段等を用いて、サービスセンターに固形潤滑剤3bの交換が必要な旨を通知しても良い。
When the control unit 100 monitors the measurement result of the detection unit 42 and detects that the electrical resistance value detected by the detection unit 42 is equal to or less than a predetermined value, the control unit 100 determines that the solid lubricant 3b is in the near-end state. judge. That is, when the distance between the lubricant holding member 3d and the application roller 3a becomes a certain distance or less by using the movement of the lubricant holding member 3d made of a conductive member, the electrode member 41 is placed in the storage case 3e. Therefore, it is possible to conduct and detect the remaining amount of the solid lubricant 3b.
Then, the operation display unit of the printer is notified that the remaining lubricant is low, and the user who is the user is prompted to replace the solid lubricant 3b. Moreover, you may notify a service center that the replacement | exchange of solid lubricant 3b is required using a communication means.

本実施例においては、潤滑剤保持部材3dの位置が、固形潤滑剤3bのニアエンド状態に対応する位置に移動するまで潤滑剤保持部材3dと電極部材41とが非導通状態となっており、電極部材間に電圧を印加しても電流が流れない。これにより、ニアエンド検知の度に電力が消費されることがないので、電力消費の低減、つまり、省電力化を図ることができる。   In this embodiment, the lubricant holding member 3d and the electrode member 41 are in a non-conductive state until the position of the lubricant holding member 3d moves to a position corresponding to the near end state of the solid lubricant 3b. No current flows even when a voltage is applied between the members. As a result, power is not consumed each time near-end is detected, so that power consumption can be reduced, that is, power can be saved.

また、本実施例においては、固形潤滑剤3bの長手方向の両端部付近(近傍)のにそれぞれ電極部材41を設けている。このため、固形潤滑剤3bが長手方向で潤滑剤の消費量が異なった場合においても、潤滑剤の消費量が多い側の端部がニアエンドとなった時点で、潤滑剤の消費量が多い側の端部側の電極部材41が潤滑剤保持部材3dと当接し導通する。これにより、固形潤滑剤3bが長手方向で潤滑剤の消費量が異なった場合においても、正確に潤滑剤のニアエンドを検知することができる。また、消費量が多い方側の潤滑剤が枯渇して、感光体1を保護できず、感光体1の表面が傷ついてしまうなどの不具合が発生するのを防止することができる。   In the present embodiment, the electrode members 41 are provided in the vicinity of (in the vicinity of) both ends in the longitudinal direction of the solid lubricant 3b. For this reason, even when the solid lubricant 3b is in the longitudinal direction and the consumption amount of the lubricant is different, when the end portion on the side where the lubricant consumption is large becomes the near end, the side where the lubricant consumption is large The electrode member 41 on the side of the end contacts the lubricant holding member 3d and becomes conductive. Thereby, even when the solid lubricant 3b has a different amount of lubricant consumption in the longitudinal direction, the near end of the lubricant can be accurately detected. In addition, it is possible to prevent the occurrence of problems such as exhaustion of the lubricant on the side where the amount of consumption is large, the photoreceptor 1 cannot be protected, and the surface of the photoreceptor 1 is damaged.

すなわち、潤滑剤残量検知手段40の導通確認を固形潤滑剤3bの長手方向の両端部2箇所で確認を行うことで、どちらか一方の導通が取れた場合、固形潤滑剤3bの残量が残り僅かであると判断することができる。このため、偏った固形潤滑剤3bの摩耗状態であっても、確実に寿命検知を行うことが可能となる。   That is, by confirming the continuity of the lubricant remaining amount detecting means 40 at two positions on both ends in the longitudinal direction of the solid lubricant 3b, if either continuity is obtained, the remaining amount of the solid lubricant 3b is It can be judged that there is little remaining. For this reason, it is possible to reliably detect the life even when the solid lubricant 3b is unevenly worn.

また、本実施例においては、供給する潤滑剤が枯渇する直前の所謂、固形潤滑剤3bのエンド状態ではなく、所定回数、感光体1表面に潤滑剤を供給可能な量の残量(ニアエンド状態)を検知するようにしている。固形潤滑剤3bのエンド状態を検知する場合、エンド状態を検知した後に画像形成動作を行うと、潤滑剤枯渇による不具合が生じるため、固形潤滑剤3bの交換作業が完了するまで画像形成動作を禁止する必要があり、プリンタのダウンタイムが生じてしまう。つまり、プリンタを動作させる(画像形成する)ことができないダウンタイムを生じさせることとなってしまう。   In this embodiment, not the so-called end state of the solid lubricant 3b immediately before the supplied lubricant is exhausted, but the remaining amount (near-end state) that can supply the lubricant to the surface of the photoreceptor 1 a predetermined number of times. ) Is detected. When detecting the end state of the solid lubricant 3b, if the image forming operation is performed after the end state is detected, a problem due to the depletion of the lubricant occurs. Therefore, the image forming operation is prohibited until the replacement operation of the solid lubricant 3b is completed. This will cause printer downtime. That is, a downtime that cannot operate the printer (image formation) occurs.

これに対し、本実施例では、固形潤滑剤3bのニアエンド状態を検知する構成としているので、検知後の所定回数、ないしは、一定の塗布ローラ3aの走行距離は、画像形成動作を行っても、感光体1の表面上に潤滑剤を塗布でき、感光体1の表面を保護できる。これにより、検知後から固形潤滑剤3bの準備が整い交換作業を開始するまでの間も、画像形成動作を行うことができ、プリンタのダウンタイムが生じるのを抑制することができる。すなわち、固形潤滑剤3bの寿命まで所定何枚、ないしは、一定の塗布ローラ3aの走行距離は、機械動作可能であるとすることができ、固形潤滑剤3bの交換を行うタイミングを設けることができ、機械動作できないダウンタイムの発生を防止することができる。   On the other hand, in the present embodiment, since the near-end state of the solid lubricant 3b is detected, the predetermined number of times after the detection or the traveling distance of the constant application roller 3a is not limited even if the image forming operation is performed. A lubricant can be applied on the surface of the photoreceptor 1 and the surface of the photoreceptor 1 can be protected. Accordingly, the image forming operation can be performed after the detection until the solid lubricant 3b is ready and the replacement operation is started, and the occurrence of printer downtime can be suppressed. That is, a predetermined number of sheets until the lifetime of the solid lubricant 3b, or a constant travel distance of the application roller 3a can be considered to be machine-operable, and a timing for replacing the solid lubricant 3b can be provided. The occurrence of downtime during which the machine cannot operate can be prevented.

また、準備が整うまでの間に、所定回数以上の画像形成動作が行われると、塗布(供給)する潤滑剤が枯渇してしまい、潤滑剤枯渇による不具合が出てしまう。このため、ニアエンドを検知したら、塗布ローラ3aの走行距離(回転回数)や、画像形成動作回数などを監視する。そして、塗布ローラ3aの走行距離や画像形成動作回数が所定値となったら、固形潤滑剤3bのエンド状態と判定して、プリンタの画像形成動作を禁止する。   Further, if the image forming operation is performed more than a predetermined number of times before preparation is completed, the lubricant to be applied (supplied) is exhausted, and a problem due to the exhaustion of the lubricant occurs. For this reason, when the near end is detected, the travel distance (number of rotations) of the application roller 3a, the number of image forming operations, and the like are monitored. When the travel distance of the application roller 3a or the number of image forming operations reaches a predetermined value, it is determined that the solid lubricant 3b is in an end state, and the image forming operation of the printer is prohibited.

また、上述した例では、潤滑剤保持部材3dを導電性材料として、収納ケース3eに設けた電極部材41の導通により、固形潤滑剤3bの残量検知を行う構成について説明した。しかし、本実施例の潤滑剤塗布装置3はこのような構成に限定されるものではなく、例えば、潤滑剤保持部材3dに電極部材を別途設けて導通確認を行う構成等、導通の有無により固形潤滑剤3bの残量変化を検出できる構成であれば良い。   In the above-described example, the configuration in which the remaining amount of the solid lubricant 3b is detected by the conduction of the electrode member 41 provided in the storage case 3e using the lubricant holding member 3d as a conductive material has been described. However, the lubricant application device 3 according to the present embodiment is not limited to such a configuration. For example, a configuration in which an electrode member is separately provided on the lubricant holding member 3d to check conduction is used to determine whether the lubricant application device 3 is solid or not. Any configuration that can detect a change in the remaining amount of the lubricant 3b may be used.

図4は、潤滑剤塗布動作停止中、及び潤滑剤塗布動作中における潤滑剤塗布装置3の状態の説明図であり、図4(a)が、潤滑剤塗布動作停止中(塗布ローラ3aの回転停止中)における潤滑剤塗布装置3の状態を示している。そして、図4(b)が、潤滑剤塗布動作中(塗布ローラ3a回転動作中)における潤滑剤塗布装置3の状態を示している。
図4(a)に示すように、ニアエンド状態に近づいた場合でも、潤滑剤塗布動作停止中のときは、潤滑剤保持部材3dと電極部材41とは離間しており、非導通状態である。
FIG. 4 is an explanatory diagram of the state of the lubricant application device 3 when the lubricant application operation is stopped and during the lubricant application operation. FIG. 4A shows the state where the lubricant application operation is stopped (the rotation of the application roller 3a). The state of the lubricant application device 3 during stoppage is shown. FIG. 4B shows the state of the lubricant application device 3 during the lubricant application operation (during the rotation operation of the application roller 3a).
As shown in FIG. 4A, even when the near end state is approached, when the lubricant application operation is stopped, the lubricant holding member 3d and the electrode member 41 are separated and are in a non-conductive state.

一方、図4(b)に示すように、潤滑剤塗布動作中のときは、塗布ローラ3aが回転して固形潤滑剤を摺擦している。このため、ニアエンド状態に近づいた場合、固形潤滑剤3bは塗布ローラ3aの表面移動方向(図中左側)に力を受ける。つまり、塗布ローラ3aの回転方向により、固形潤滑剤3bには当接部から塗布ローラ3aの回転方向下流側へ付勢されることとなる。
また、潤滑剤保持部材3dは、収納ケース3eの内部で移動できるように構成する必要があるため、収納ケース3eに対してある程度のガタがある状態で収納ケース3eに収納されている。このため、固形潤滑剤3bは塗布ローラ3aの表面移動方向(図中左側)に力を受けると、潤滑剤保持部材3dが、図4(b)に示すように塗布ローラ3aの固形潤滑剤3bを摺擦する方向(図中左側)に傾いたり、移動したりした状態となる。
On the other hand, as shown in FIG. 4B, during the lubricant application operation, the application roller 3a rotates to rub the solid lubricant. For this reason, when the near end state is approached, the solid lubricant 3b receives a force in the surface movement direction (left side in the figure) of the application roller 3a. That is, depending on the rotation direction of the application roller 3a, the solid lubricant 3b is urged from the contact portion to the downstream side in the rotation direction of the application roller 3a.
Further, since the lubricant holding member 3d needs to be configured to be movable inside the storage case 3e, the lubricant holding member 3d is stored in the storage case 3e with a certain amount of play relative to the storage case 3e. For this reason, when the solid lubricant 3b receives a force in the surface movement direction (left side in the figure) of the application roller 3a, the lubricant holding member 3d turns the solid lubricant 3b of the application roller 3a as shown in FIG. 4B. It is in a state where it is tilted or moved in the rubbing direction (left side in the figure).

そして、潤滑剤塗布動作時の潤滑剤保持部材3dは、塗布ローラ3aとの固形潤滑剤3bの摺擦部での負荷変動により塗布ローラ3aの回転に対して、固形潤滑剤3bが振動した状態となってしまう。特に、固形潤滑剤3bの重力方向が、塗布ローラ3aの固形潤滑剤に対する摺擦方向と反対側の場合、上記負荷変動による振動が大きくなる。さらに、塗布ローラ自体の回転動作に振れが生じた場合も、それにみあって固形潤滑剤が振動することとなる。その結果、例え、潤滑剤塗布動作時に図4(b)に示すような傾きが生じなかったとしても、上記振動により、ニアエンド時の電極部材41と潤滑剤保持部材との接触状態が不安定となり、振動により導通や非導通を繰り返す状況になる。   The lubricant holding member 3d during the lubricant application operation is in a state in which the solid lubricant 3b vibrates with respect to the rotation of the application roller 3a due to a load variation at the sliding portion of the solid lubricant 3b with the application roller 3a. End up. In particular, when the gravitational direction of the solid lubricant 3b is opposite to the rubbing direction of the application roller 3a with respect to the solid lubricant, the vibration due to the load fluctuation increases. Furthermore, even when the application roller itself swings, the solid lubricant vibrates accordingly. As a result, even if the inclination as shown in FIG. 4B does not occur during the lubricant application operation, the contact state between the electrode member 41 and the lubricant holding member at the near end becomes unstable due to the vibration. The state of repeating conduction and non-conduction due to vibration.

このため、振動により固形潤滑剤3bがまだニアエンド状態まで消費されているにもかかわらず電極部材41と潤滑剤保持部材3dが導通せず、ニアエンドを通知しない可能性がある。また、振動により生じる接触状態の不安定化によるノイズ等が導通状態に及ぼす影響を考慮するために、ノイズの影響を受けないような電力量とする等の対応(必要以上の電力を有する構成)が必要となってしまう。
そこで、本実施例では、潤滑剤塗布動作停止中に残量検知を行うようにした。つまり、塗布ローラ3aの駆動状態を確認し、回転動作停止後から次回の回転動作開始までの間で導通状態を検知して、固形潤滑剤3bの残量検知を行うようにした。
このように残量検知を行うことで、上述したような振動による影響を受けない構成とすることが可能であり、また消費電力も必要最低限でおさえることができる。
For this reason, there is a possibility that the electrode member 41 and the lubricant holding member 3d do not conduct and the near end is not notified even though the solid lubricant 3b is still consumed to the near end state due to vibration. In addition, in order to consider the influence of noise caused by vibration on the conduction state due to instability of the contact state, measures such as setting the amount of power so as not to be affected by the noise (configuration with more power than necessary) Will be necessary.
Therefore, in this embodiment, the remaining amount is detected while the lubricant application operation is stopped. That is, the driving state of the application roller 3a is confirmed, and the conduction state is detected after the rotation operation is stopped until the next rotation operation is started, and the remaining amount of the solid lubricant 3b is detected.
By performing the remaining amount detection in this way, it is possible to have a configuration that is not affected by the vibration described above, and it is possible to suppress power consumption to a minimum.

次に、本実施例の潤滑剤塗布装置3の固形潤滑剤3bの残量検知における制御フロー、及び固形潤滑剤3bの残量検知のより詳細なタイミングについて、図を用いて説明する。
図5は、本実施例に係る潤滑剤塗布装置3の固形潤滑剤3bの残量検知における制御フロー図である。図6は、固形潤滑剤3bの残量検知のタイミングチャート図である。
Next, the control flow in the remaining amount detection of the solid lubricant 3b of the lubricant application device 3 of this embodiment and the more detailed timing of the remaining amount detection of the solid lubricant 3b will be described with reference to the drawings.
FIG. 5 is a control flow diagram for detecting the remaining amount of the solid lubricant 3b of the lubricant application device 3 according to this embodiment. FIG. 6 is a timing chart for detecting the remaining amount of the solid lubricant 3b.

図5に示すように、制御部100は、潤滑剤塗布動作が終了したか否かを機械の停止要求があった否かをチェックしてから(S101)、固形潤滑剤3bの残量検知の判定実行を開始する(S102)。   As shown in FIG. 5, the control unit 100 checks whether or not the lubricant application operation has been completed, and whether or not there has been a machine stop request (S101), and then detects the remaining amount of the solid lubricant 3b. Determination execution is started (S102).

このとき、図6の「(1)」に示すように、プリンタの制御部からの機械動作停止要求信号により機械動作停止が指示される。すると、図6の「(2)」に示すように、感光体1を回転駆動させる駆動モータや塗布ローラ3aを回転駆動させる駆動モータなどを停止(ON→OFF)し、プリンタ本体の動作が停止する。
なお、塗布ローラ3aを回転駆動する構成では、塗布ローラ3aを回転駆動する駆動モータがONからOFFに切り替わったことを検知することで、潤滑剤塗布動作が終了したことを検知することもできる。一方、塗布ローラ3aが、感光体1と連れ回りする構成では、例えば、感光体1を回転駆動させる駆動モータがONからOFFに切り替わったことを検知することで潤滑剤塗布動作が終了したことを検知することができる。また、これに限らず、エンコーダなどで塗布ローラ3aが停止したことを検知することで潤滑剤塗布動作が終了したことを検知しても良い。
At this time, as shown in “(1)” of FIG. 6, the machine operation stop is instructed by the machine operation stop request signal from the control unit of the printer. Then, as shown in “(2)” of FIG. 6, the drive motor for rotating the photosensitive member 1 and the drive motor for rotating the application roller 3a are stopped (ON → OFF), and the operation of the printer main body is stopped. To do.
In the configuration in which the application roller 3a is rotationally driven, it is also possible to detect the end of the lubricant application operation by detecting that the drive motor that rotationally drives the application roller 3a is switched from ON to OFF. On the other hand, in the configuration in which the application roller 3a rotates with the photoreceptor 1, for example, the fact that the lubricant application operation has been completed is detected by detecting that the drive motor that rotationally drives the photoreceptor 1 is switched from ON to OFF. Can be detected. Further, the present invention is not limited to this, and it may be detected that the lubricant application operation has been completed by detecting that the application roller 3a has stopped using an encoder or the like.

プリンタの本体動作が停止した後、図6の「(3)」に示すように、潤滑剤残量検知用のバイアス印加をOFF→ONとし、電極部材41と潤滑剤保持部材3dとの間にバイアスを印加した後、図6の「(4)」に示すように、潤滑剤残量検知の判断を実行する。
ここで、潤滑剤残量検知は、例えば、回転動作終了時から2秒後(Tx−Ta)に0.2秒間隔にて導通状態を10回、確認を行う。10回とも導通を確認した場合に、ニアエンドと判断するように制御する。潤滑剤残量検知の実行時間は、図10に示すように、(ΔL=Ty−Tx)である。
そして、潤滑剤残量検知の判断実行時間(ΔL=Ty−Tx)を経過したら、潤滑剤残量検知用のバイアス印加をON→OFFとし、画像形成装置本体の次動作の実行に備える。
After the operation of the main body of the printer is stopped, as shown in “(3)” of FIG. 6, the bias application for detecting the remaining amount of lubricant is changed from OFF to ON, and between the electrode member 41 and the lubricant holding member 3d. After the bias is applied, as shown in “(4)” of FIG.
Here, the remaining amount detection of the lubricant is performed, for example, by confirming the conduction state 10 times at 0.2 second intervals after 2 seconds (Tx-Ta) from the end of the rotation operation. Control is performed so as to determine near-end when continuity is confirmed 10 times. The execution time of the lubricant remaining amount detection is (ΔL = Ty−Tx) as shown in FIG.
Then, when the judgment execution time (ΔL = Ty−Tx) of the lubricant remaining amount detection elapses, the bias application for detecting the lubricant remaining amount is changed from ON to OFF to prepare for the next operation of the image forming apparatus main body.

本実施例では、機械動作停止時(Ta)から次動作開始時(Tb)までのΔNの間に、潤滑剤残量検知開始(Tx)から潤滑剤残量検知終了(Ty)の時間(ΔL)で導通検知により潤滑剤残量の判断を行う構成としている。このため、導通検知に必要なバイアス印加も潤滑剤残量検知の判断を行うタイミングにのみ実行する(図6図中ではT1〜T2までのΔMの時間バイアス印加を実行する)。このように、残量検知を実行するときのみ、電極部材41と潤滑剤保持部材3dとの間にバイアスを印加するので、省電力な構成とすることができる。また、プリンタ本体の動作実行中に潤滑剤残量検知用のバイアス印加を行わないため、潤滑剤残量検知用のバイアス印加のノイズによる他動作、他制御への影響を及ぼす懸念もなくなる。   In this embodiment, the time (ΔL) from the lubricant remaining amount detection start (Tx) to the lubricant remaining amount detection end (Ty) between ΔN from the machine operation stop (Ta) to the next operation start (Tb). ) To determine the remaining amount of lubricant by detecting conduction. For this reason, the bias application necessary for detecting the continuity is also executed only at the timing for determining the lubricant remaining amount detection (in FIG. 6, the time bias application of ΔM from T1 to T2 is executed). Thus, since a bias is applied between the electrode member 41 and the lubricant holding member 3d only when the remaining amount detection is performed, a power saving configuration can be achieved. Further, since the bias application for detecting the remaining amount of lubricant is not performed during the operation of the printer main body, there is no fear of affecting other operations and other controls due to noise applied to the bias for detecting the remaining amount of lubricant.

なお、詳しくは後述するが、プリンタ本体の制御部からの次動作の開始要求が、潤滑剤残量検知の判断の終了(Ty)前に指示された場合は、固形潤滑剤3bの使用率が閾値未満であれば、潤滑剤残量検知判断の実行を中断(停止)して本体(機械)動作を開始する。ここで、本実施例では、固形潤滑剤3b自体が、新品ないしは前回交換されてから、固形潤滑剤3bの残量がほぼゼロになる塗布ローラ3aの定めた走行距離基準に対する、塗布ローラ3aの累積走行距離の比を使用率と定めている。
上述したように、潤滑剤残量検知判断への次動作の開始要求の割り込みを許容することで、常に、潤滑剤残量検知判断の終了を待ってから、本体動作を開始する場合に比べて、ダウンタイムを生じさせることがない。なお、固形潤滑剤3bの使用率が閾値以上であれば、残量検知の判定を継続し、プリンタ本体の制御部からの次動作の開始要求を、固形潤滑剤3bの残量検知の判定が終了するまで待機させる。
As will be described in detail later, when the start request for the next operation from the control unit of the printer body is instructed before the end of the determination of the remaining amount of lubricant (Ty), the usage rate of the solid lubricant 3b is increased. If it is less than the threshold value, the execution of the lubricant remaining amount detection judgment is interrupted (stopped) and the main body (machine) operation is started. Here, in the present embodiment, the solid lubricant 3b itself is new or has been replaced last time, and the remaining amount of the solid lubricant 3b becomes almost zero. The ratio of cumulative mileage is defined as the usage rate.
As described above, by allowing interruption of the next operation start request to the lubricant remaining amount detection determination, it is always possible to wait for the end of the lubricant remaining amount detection determination before starting the main body operation. No downtime. If the usage rate of the solid lubricant 3b is equal to or greater than the threshold value, the determination of the remaining amount is continued, and the next operation start request from the control unit of the printer main body is determined as the determination of the remaining amount of the solid lubricant 3b. Wait until finished.

ここで、制御部100は、固形潤滑剤3bの残量検知の判定実行を開始した後(S102)、プリンタ本体の制御部からの次動作の要求が有ったか否かの判断を行う(S103)。そして、プリンタ本体の制御部からの次動作の開始要求が無かった場合(S103のNO)、残量検知判断を所定回数(時間)だけ継続した後、固形潤滑剤3bの残量検知の判定が完了したか否かの判断を行う(S104)。この判断で、残量検知の判定が完了したと判断した場合(S104のYES)、残量検知の判定完了にともない制御部100に記憶している固形潤滑剤3bの残量状態の更新を行い(S105)、固形潤滑剤3bの残量検知の判定を終了する。
一方、残量検知の判定が完了していないと判断した場合(S104のNO)、プリンタ本体の制御部からの次動作の開始要求が有ったか否かの判断に戻る(S103)。
Here, after starting the determination execution of the remaining amount detection of the solid lubricant 3b (S102), the control unit 100 determines whether or not there is a request for the next operation from the control unit of the printer main body (S103). ). If there is no request for starting the next operation from the control unit of the printer main body (NO in S103), the remaining amount detection determination is continued a predetermined number of times (time), and then the remaining amount detection determination of the solid lubricant 3b is performed. It is determined whether or not it is completed (S104). If it is determined that the determination of the remaining amount is completed (YES in S104), the remaining state of the solid lubricant 3b stored in the control unit 100 is updated when the determination of the remaining amount is completed. (S105), the determination of the remaining amount detection of the solid lubricant 3b is terminated.
On the other hand, when it is determined that the determination of the remaining amount is not completed (NO in S104), the process returns to the determination of whether or not there is a request for starting the next operation from the control unit of the printer main body (S103).

また、残量検知の判断実行中、プリンタ本体の制御部からの次動作の開始要求が有ったか否かの判断で(S103)、次動作の開始要求が有ったと判断した場合(S103のYES)、固形潤滑剤3bの使用率が80[%]以上か否かの判断を行う(S106)。
ここで、本実施例では、上述したように、固形潤滑剤3b自体が、新品ないしは前回交換されてから、固形潤滑剤3bの残量がほぼゼロになる塗布ローラ3aの定めた走行距離基準に対する、塗布ローラ3aの累積走行距離の比を使用率と定めている。
Further, during the determination of the remaining amount detection, when it is determined whether there is a request for starting the next operation from the control unit of the printer body (S103), when it is determined that there is a request for starting the next operation (S103) YES), it is determined whether the usage rate of the solid lubricant 3b is 80 [%] or more (S106).
Here, in the present embodiment, as described above, the solid lubricant 3b itself is new or has been replaced last time, so that the remaining amount of the solid lubricant 3b becomes almost zero. The ratio of the cumulative travel distance of the application roller 3a is defined as the usage rate.

そして、固形潤滑剤3bの使用率が80[%]以上で有ると判断した場合(S106のYES)、固形潤滑剤3bのニアエンド状態、もしくは、エンド状態が検知される可能性があるため、次動作の開始要求を待機させ、残量検知の判定を継続する(S106)。このように、残量検知の判定を継続した後は、次動作の開始要求が無かった場合と同様に、残量判定が完了したか否かの判断(S104)に移行する。
一方、固形潤滑剤3bの使用率が80[%]未満であると判断した場合(S106のNO)、即座に残量検知の判定を中断し(S108)、次動作の開始要求に従い、プリンタ本体の機械動作を割り込ませ(S109)、固形潤滑剤3bの残量検知の判定を終了する。
If it is determined that the usage rate of the solid lubricant 3b is 80% or more (YES in S106), the near-end state or the end state of the solid lubricant 3b may be detected. The operation start request is waited for and the remaining amount detection determination is continued (S106). As described above, after the determination of the remaining amount is continued, the process proceeds to determination (S104) as to whether or not the remaining amount determination is completed, as in the case where there is no request for starting the next operation.
On the other hand, if it is determined that the usage rate of the solid lubricant 3b is less than 80 [%] (NO in S106), the determination of the remaining amount detection is immediately interrupted (S108), and the printer main body is followed according to the next operation start request. The machine operation is interrupted (S109), and the determination of the remaining amount detection of the solid lubricant 3b is terminated.

このように、本実施例では、固形潤滑剤3bの残量検知の判定実行中(図6での、停止要求からTyの残量検知判断の完了までの期間)に次動作の開始要求が来た場合、固形潤滑剤3bの使用率が閾値以上であるか否かの判断を行う。そして、この判断に基づいて、残量検知の判定を継続し完了させるか、残量検知の判断を中断して即座に次動作を開始するかの判断を行う。   As described above, in this embodiment, a request for starting the next operation is made during the determination of the remaining amount detection of the solid lubricant 3b (the period from the stop request to the completion of the Ty remaining amount detection determination in FIG. 6). In such a case, it is determined whether or not the usage rate of the solid lubricant 3b is equal to or greater than a threshold value. Then, based on this determination, it is determined whether to continue and complete the remaining amount detection determination or to interrupt the remaining amount detection determination and immediately start the next operation.

本来、制御部100による、固形潤滑剤3bの残量検知の判定を常に行うことが望ましいが、その判定期間(停止要求から検知判断完了までのTy)は機械動作を禁止させるいわゆるデッドタイムとなってしまう。
そこで、本実施例では、上記デッドタイムを極力なくすため、上述したように、プリンタ本体の制御部からの次動作の開始要求に対して、即座に機械動作開始に移行できる期間を設ける構成としている。
Originally, it is desirable to always perform the determination of the remaining amount detection of the solid lubricant 3b by the control unit 100, but the determination period (Ty from the stop request to the completion of the detection determination) is a so-called dead time for prohibiting the machine operation. End up.
Therefore, in this embodiment, in order to eliminate the dead time as much as possible, as described above, in response to a request for starting the next operation from the control unit of the printer main body, a period in which the machine operation can be started immediately is provided. .

具体的には、上述したように、固形潤滑剤3bの使用率が80%未満であれば、固形潤滑剤3bのニアエンド状態、もしくは、エンド状態が検知される可能性も低く、かつ、残量検知の判定が次動作時に遅れたとしても、枯渇によるリスク等を招くことはない。このため、その期間では、機械動作の要求に従うことを優先し、潤滑剤の残量検知手段による判定を中断するフローとしている。一方、80%以上の使用状況であれば、固形潤滑剤3bのニアエンド状態、もしくは、エンド状態が検出される可能性があるため、次動作の開始要求を待機させ、固形潤滑剤3bの残量検知の判定を確実に実行する構成としている。
なお、固形潤滑剤3bの残量検知の判定で、ニアエンド状態であると判定した場合には、その旨をユーザーに報知するとともに、ユニットの交換が必要である旨を報知する。
Specifically, as described above, if the usage rate of the solid lubricant 3b is less than 80%, the near-end state or the end state of the solid lubricant 3b is less likely to be detected, and the remaining amount Even if the detection determination is delayed during the next operation, there is no risk of depletion. For this reason, in the period, priority is given to following the request | requirement of a machine operation | movement, and it is set as the flow which interrupts determination by the residual amount detection means of a lubricant. On the other hand, if the usage state is 80% or more, there is a possibility that the near end state or end state of the solid lubricant 3b is detected. The detection determination is surely executed.
In addition, when it is determined in the determination of the remaining amount of the solid lubricant 3b that it is in the near-end state, the user is notified of the fact and the unit needs to be replaced.

上述したように構成することで、次のような効果を奏することができる。
潤滑剤残量検知手段40は、感光体1への潤滑剤の供給動作停止中に残量検知を行うので、塗布ローラ3aの回転を停止させ、固形潤滑剤3bが収納ケース3e内で振動していない状態で残量検知を行うことができる。このため、振動による固形潤滑剤3bの残量の誤検知の発生を抑制することが可能となる。
By configuring as described above, the following effects can be obtained.
The lubricant remaining amount detecting means 40 detects the remaining amount while the supply operation of the lubricant to the photosensitive member 1 is stopped. Therefore, the rotation of the application roller 3a is stopped and the solid lubricant 3b vibrates in the storage case 3e. The remaining amount can be detected in the state where it is not. For this reason, it becomes possible to suppress generation | occurrence | production of the misdetection of the residual amount of the solid lubricant 3b by vibration.

また、固形潤滑剤3bの残量の変化に相関を持つ値を計数する制御部100により計数した値としての上記使用率に応じて、残量検知を中断し、プリンタからの潤滑剤塗布動作の開始要求に応じて潤滑剤塗布動作を開始するか、残量検知が完了するまで、潤滑剤塗布動作の開始を待機させるか判断できる。このため、潤滑剤の供給動作中に、潤滑剤が枯渇するおそれがある場合のみ残量検知を優先させ、潤滑剤が枯渇するおそれがない場合には、プリンタの画像形成動作の割り込みにともなう潤滑剤塗布動作を開始することができる。したがって、固形潤滑剤3bの残量検知に起因して生じる、プリンタのデッドタイムを低減することが可能となる。
よって、固形潤滑剤3bの残量の誤検知の発生を抑制できるとともに、プリンタのデッドタイムを低減できる潤滑剤塗布装置3を提供できる。
Further, the remaining amount detection is interrupted according to the usage rate as a value counted by the control unit 100 that counts a value correlated with the change in the remaining amount of the solid lubricant 3b, and the lubricant application operation from the printer is performed. It can be determined whether to start the lubricant application operation in response to the start request or to wait for the start of the lubricant application operation until the remaining amount detection is completed. Therefore, during the lubricant supply operation, priority is given to the remaining amount detection only when there is a possibility that the lubricant will be exhausted, and if there is no possibility that the lubricant will be exhausted, the lubrication associated with the interruption of the image forming operation of the printer will be performed. The agent application operation can be started. Therefore, it is possible to reduce the printer dead time caused by detecting the remaining amount of the solid lubricant 3b.
Therefore, it is possible to provide the lubricant application device 3 that can suppress the occurrence of erroneous detection of the remaining amount of the solid lubricant 3b and can reduce the dead time of the printer.

また、上記したように、本実施例の潤滑剤塗布装置3の潤滑剤残量検知手段40は、次(i)〜(v)の順で、固形潤滑剤3bの残量を検知する残量検知に係る動作を行う。
(i)塗布ローラ3aの動作停止
(ii)導通検知部への通電開始
(iii)固形潤滑剤3bの残量判断の実行開始
(iv)固形潤滑剤3bの残量判断の実行終了
(v)導通検知部への通電停止
Further, as described above, the remaining amount detecting means 40 of the lubricant applying device 3 of this embodiment detects the remaining amount of the solid lubricant 3b in the following order (i) to (v). Performs actions related to detection.
(i) Stopping the operation of the application roller 3a
(ii) Starting energization to the continuity detector
(iii) Start of determination of remaining amount of solid lubricant 3b
(iv) Execution of determination of remaining amount of solid lubricant 3b
(v) Stopping energization to the continuity detector

これによれば、通電動作を固形潤滑剤3bの残量検知(判断)を行うタイミングでのみ実行する構成とし、かつ、塗布ローラ3aの動作停止から、次回動作開始までの間に通電動作を開始して停止する構成にできる。
よって、プリンタの省電力化や、固形潤滑剤3bの残量検知の誤検知の抑制効果を確実に発揮することができる。
According to this, the energization operation is executed only at the timing of detecting (judging) the remaining amount of the solid lubricant 3b, and the energization operation is started from the stop of the operation of the application roller 3a to the start of the next operation. And can be configured to stop.
Therefore, it is possible to reliably exert the effect of suppressing the power saving of the printer and the erroneous detection of the remaining amount detection of the solid lubricant 3b.

また、電極部材41と潤滑剤保持部材3dとの接触が安定しているので、潤滑剤保持部材3dと電極部材41との間に高い電圧をかけずとも、良好の導通状態を検知することができ、消費電力も必要最低限でおさえることができる。なお、上述では、潤滑剤動作終了後に残量検知を行っているが、潤滑剤動作開始前に残量検知を行っても良い。   In addition, since the contact between the electrode member 41 and the lubricant holding member 3d is stable, a good conduction state can be detected without applying a high voltage between the lubricant holding member 3d and the electrode member 41. And power consumption can be minimized. In the above description, the remaining amount is detected after the end of the lubricant operation. However, the remaining amount may be detected before the start of the lubricant operation.

次に、供給する潤滑剤が枯渇する直前の所謂、固形潤滑剤3bのエンド状態を検知するエンド検知の一例について説明する。
まず、プリンタの画像形成枚数、つまり通紙枚数によるエンド検知の具体的一例を示す。仮に、固形潤滑剤3bの寿命が200K枚である場合、180K枚時点でニア寿命であると判断するように潤滑剤残量検知手段40を構成したとする。残量検知手段(電極部材41と検知部42とで構成)がニアエンド状態と判断した時から、制御部100によって通紙枚数をカウントするように制御する。そして、規定の通紙枚数(ここでは20K枚)に到達したときに、プリンタ本体の機械の動作を禁止させると同時に、潤滑剤の寿命及びユニットの交換を通知する。
Next, an example of end detection for detecting the end state of the solid lubricant 3b immediately before the supplied lubricant is exhausted will be described.
First, a specific example of the end detection based on the number of images formed by the printer, that is, the number of sheets passing through is shown. If the lifetime of the solid lubricant 3b is 200K sheets, it is assumed that the lubricant remaining amount detecting means 40 is configured so as to determine that the lifetime is about 180K sheets. When the remaining amount detection means (comprising the electrode member 41 and the detection unit 42) determines that the near end state is reached, the control unit 100 controls to count the number of sheets to be passed. When the specified number of sheets to be passed (here, 20K) is reached, the operation of the machine of the printer main body is prohibited, and at the same time, the life of the lubricant and the replacement of the unit are notified.

検知精度向上の面では、感光体1、もしくは塗布ローラ3aの駆動時間(もしくは走行距離)で固形潤滑剤3bのエンド状態を判断する方が、通紙枚数で固形潤滑剤3bのエンド状態を判断する場合に比べて望ましい。具体的に説明すると、印刷開始前や印刷終了時に電位や濃度を調整する動作や転写残トナーをクリーニングする動作等の調整動作が実施され、この調整動作時も感光体1、及び塗布ローラ3aが回転駆動し、潤滑剤が消費される。
例えば、作像時間に2秒、印刷前後の調整動作に計10秒かかるとする。同じ100枚印刷する場合でも、連続印刷枚数が1枚と少ない場合は、その都度、調整動作が行われるので、12秒×100回=1200秒だけ要する。
In terms of improving detection accuracy, the end state of the solid lubricant 3b is determined based on the number of sheets that pass when the end state of the solid lubricant 3b is determined based on the driving time (or travel distance) of the photoreceptor 1 or the application roller 3a. It is desirable compared to More specifically, adjustment operations such as an operation for adjusting the potential and density before starting printing and at the end of printing, and an operation for cleaning residual toner after transfer, etc. are carried out. It is driven to rotate and the lubricant is consumed.
For example, it is assumed that the image formation time takes 2 seconds and the adjustment operation before and after printing takes 10 seconds in total. Even when the same 100 sheets are printed, if the number of continuous prints is as small as one, the adjustment operation is performed each time, so that 12 seconds × 100 times = 1200 seconds are required.

一方、連続印刷枚数100枚の場合は、10秒+2×100回=210秒と印刷に要する時間は少なくなる。すなわち、同じ100枚印刷する場合でも、一枚ずつ印刷した場合は、潤滑剤が消費された時間が1200秒に対して、連続印刷枚数が100枚のときは、潤滑剤が消費された時間が210秒となり、大きく異なるのである。
よって、検知精度向上の面では、感光体1、もしくは塗布ローラ3aの駆動時間(もしくは走行距離)で判断する方が好ましい。これは、調整動作中も感光体1、及び塗布ローラ3aは、回転駆動しており、この調整動作時における潤滑剤の消費も把握することができるからである。
On the other hand, in the case of 100 continuous prints, the time required for printing is reduced to 10 seconds + 2 × 100 times = 210 seconds. That is, even when printing the same 100 sheets, when the sheets are printed one by one, the time when the lubricant is consumed is 1200 seconds, whereas when the number of continuously printed sheets is 100, the time when the lubricant is consumed. This is 210 seconds, which is very different.
Therefore, in terms of improving detection accuracy, it is preferable to make a determination based on the driving time (or travel distance) of the photoreceptor 1 or the application roller 3a. This is because the photoreceptor 1 and the application roller 3a are driven to rotate during the adjustment operation, and the consumption of the lubricant during the adjustment operation can be grasped.

また、プリンタ装置本体の環境(温度や湿度)を検知して、塗布ローラ3aの回転数を変化させる構成として、環境による塗布量の変動量を抑えるのが好ましい。この場合、感光体1の走行距離又は駆動時間、塗布ローラ3aの駆動時間でエンド検知するのが好ましい。以下に、具体的に説明する。   In addition, it is preferable that the amount of change in the coating amount due to the environment be suppressed as a configuration in which the environment (temperature and humidity) of the printer apparatus main body is detected to change the rotation speed of the coating roller 3a. In this case, it is preferable to detect the end based on the travel distance or drive time of the photoreceptor 1 and the drive time of the application roller 3a. This will be specifically described below.

例えば、ニアエンド状態を検知してから固形潤滑剤3bの寿命がくるまでの塗布ローラ3aの走行距離が、常温・常湿環境下で20kmであり、エンド検知の設定を、塗布ローラ3aの走行距離が20kmに達したときに行うとした場合を一例にして説明する。
高温高湿環境下においては、潤滑剤の塗布量(消費量)が常温・常湿環境下に対して、例えば(2/3)低下する場合は、潤滑剤の寿命がくる塗布ローラ3aの走行距離が30Kmに延びる。よって、塗布ローラ3aの走行距離20kmで固形潤滑剤3bを寿命と判断する場合は、固形潤滑剤3bを使い切る前にエンド状態と判断してしまい、固形潤滑剤3bが残った状態で交換されるおそれがある。
For example, the travel distance of the application roller 3a from the detection of the near end state to the end of the life of the solid lubricant 3b is 20 km in a normal temperature / humidity environment, and the end detection setting is set to the travel distance of the application roller 3a. As an example, description will be made on the case where the operation is performed when the distance reaches 20 km.
In a high-temperature and high-humidity environment, when the amount of lubricant applied (consumption) is, for example, (2/3) lower than that in a normal temperature / normal humidity environment, the application roller 3a travels to reach the life of the lubricant. The distance extends to 30km. Therefore, when it is determined that the solid lubricant 3b is at the end of its life when the travel distance of the application roller 3a is 20 km, the end state is determined before the solid lubricant 3b is used up, and the solid lubricant 3b is replaced with remaining. There is a fear.

また、低温低湿環境下においては、潤滑剤の塗布量が、常温・常湿環境下に対して例えば、1.5倍増加する場合は、潤滑剤の寿命がくる塗布ローラ3aの走行距離が10Kmに短縮される。よって、塗布ローラ3aの走行距離20kmで固形潤滑剤3bを寿命と判断する場合は、10Kmを超えた段階で潤滑剤が枯渇して、感光体1の表面に潤滑剤が塗布されなくなる。その結果、感光体フィルミング、クリーニング不良、感光体磨耗、白ポチ画像、クリーニングブレードの捲れ等の不具合が生じるおそれがある。   Also, in a low temperature and low humidity environment, when the amount of lubricant applied increases, for example, by 1.5 times that in a normal temperature / normal humidity environment, the travel distance of the coating roller 3a, which reaches the life of the lubricant, is 10 km. Shortened to Therefore, when it is determined that the solid lubricant 3b has a lifetime when the travel distance of the application roller 3a is 20 km, the lubricant is exhausted when the solid lubricant 3b exceeds 10 km, and the lubricant is not applied to the surface of the photoreceptor 1. As a result, problems such as photoconductor filming, poor cleaning, photoconductor wear, white spotted images, and cleaning blade swell may occur.

一方、プリンタ装置本体の環境を検知して、塗布ローラ3aの回転速度(回転数)を変化させる構成では、高温・高湿環境下において、塗布ローラ3aの回転速度を常温・常湿環境下に比べて1.5倍とすることで、塗布量を、常温・常湿環境下と同じにできる。このように、回転速度を1.5倍としているので、固形潤滑剤3bを使い切る塗布ローラ3aの駆動時間は、常温・常湿環境下と同じ駆動時間になる。また、低温・低湿環境下においては、塗布ローラ3aの回転速度を常温・常湿環境下に比べて0.5倍とすることで、潤滑剤の塗布量を、常温・常湿環境下と同じにできる。このように、速度を0.5倍としているので、固形潤滑剤3bを使い切る塗布ローラ3aの駆動時間は、常温・常湿環境下と同じ駆動時間になる。   On the other hand, in a configuration in which the environment of the printer apparatus body is detected and the rotation speed (rotation speed) of the application roller 3a is changed, the rotation speed of the application roller 3a is changed to a room temperature / normal humidity environment in a high temperature / high humidity environment. By making it 1.5 times larger than that, the coating amount can be made the same as in a normal temperature / humidity environment. As described above, since the rotation speed is 1.5 times, the driving time of the application roller 3a that uses up the solid lubricant 3b is the same as the driving time in the normal temperature / humidity environment. Also, in a low temperature / low humidity environment, the rotation speed of the application roller 3a is 0.5 times that in a normal temperature / normal humidity environment, so that the amount of lubricant applied is the same as in a normal temperature / normal humidity environment. Can be. Thus, since the speed is set to 0.5 times, the driving time of the application roller 3a that uses up the solid lubricant 3b is the same as the driving time under the normal temperature / humidity environment.

このようにプリンタ装置本体の環境を検知して、塗布ローラ3aの回転速度を変化させる構成とし、環境による塗布量の変動量を抑えた場合、環境がどのように変動しても、塗布ローラ3aの駆動時間が所定の時間となったとき、固形潤滑剤3bがエンド状態となる。したがって、プリンタ装置本体の環境(温度や湿度)を検知して、塗布ローラ3aの回転速度(回転数)を変化させる構成の場合、塗布ローラ3aの駆動時間を固形潤滑剤3bのエンド検知に用いることで、精度のよいエンド検知を行うことができる。   As described above, when the environment of the printer apparatus body is detected and the rotation speed of the application roller 3a is changed, and the variation amount of the application amount due to the environment is suppressed, the application roller 3a is no matter how the environment changes. When the driving time becomes a predetermined time, the solid lubricant 3b is in the end state. Therefore, in a configuration in which the environment (temperature and humidity) of the printer apparatus main body is detected and the rotation speed (rotation speed) of the application roller 3a is changed, the driving time of the application roller 3a is used for the end detection of the solid lubricant 3b. Thus, accurate end detection can be performed.

また、上述したように、プリンタ装置本体の環境(温度や湿度)を検知して、塗布ローラ3aの回転速度(回転数)を変化させる構成とした場合、感光体1の駆動時間も環境によって潤滑剤のエンド条件が変動することがない。このため、感光体1の駆動時間で固形潤滑剤3bのエンド検知を行うことで、良好なエンド検知を行うことができる。また、環境が変化しても感光体1の回転速度が一定であるので、回転速度と駆動時間とから算出される感光体1の走行距離も、環境によって固形潤滑剤3bのエンド条件が変動することがない。よって、感光体1の走行距離で固形潤滑剤3bのエンド検知を行うことでも、良好なエンド検知を行うことができる。   Further, as described above, when the environment (temperature and humidity) of the printer apparatus main body is detected and the rotation speed (number of rotations) of the application roller 3a is changed, the driving time of the photoreceptor 1 is also lubricated depending on the environment. The end condition of the agent does not fluctuate. Therefore, good end detection can be performed by detecting the end of the solid lubricant 3b during the driving time of the photosensitive member 1. In addition, since the rotational speed of the photosensitive member 1 is constant even when the environment changes, the end condition of the solid lubricant 3b varies depending on the traveling distance of the photosensitive member 1 calculated from the rotational speed and the driving time. There is nothing. Therefore, good end detection can also be performed by detecting the end of the solid lubricant 3b at the travel distance of the photoreceptor 1.

潤滑剤の感光体1への塗布量は一定ではなく、感光体1の表面に形成された画像面積率などにより異なる。具体的に説明すると、潤滑剤が塗布された感光体1の表面に形成されたトナー像は、一次転写部で中間転写ベルト56に転写されるが、このとき、感光体1表面上の潤滑剤が、トナーとともに中間転写ベルト56に移る場合がある。このため、高画像面積率の画像の方が、低画像面積率の画像に比べて、感光体1表面上の潤滑剤量が少なくなる。その結果、高画像面積率の画像の方が、感光体表面に供給される潤滑剤量が多くなるのである。   The amount of lubricant applied to the photoreceptor 1 is not constant, and varies depending on the image area ratio formed on the surface of the photoreceptor 1. More specifically, the toner image formed on the surface of the photoreceptor 1 coated with the lubricant is transferred to the intermediate transfer belt 56 at the primary transfer portion. At this time, the lubricant on the surface of the photoreceptor 1 is transferred. May move to the intermediate transfer belt 56 together with the toner. For this reason, the amount of lubricant on the surface of the photoreceptor 1 is smaller in the image with the high image area ratio than in the image with the low image area ratio. As a result, the amount of lubricant supplied to the surface of the photoreceptor increases in the image with a high image area ratio.

このため、文字などの低画像面積率の画像を頻繁に出力するユーザーと、写真などの高画像面積率の画像を頻繁に出力するユーザーとで潤滑剤の減り具合が異なる。その結果、低画像面積率の画像を頻繁に出力した場合は、高画像面積率を頻繁に出力した場合に比べて、固形潤滑剤3bがニアエンド状態になるまでの塗布ローラ3aの走行距離が長くなる。   For this reason, the degree of lubricant reduction differs between a user who frequently outputs an image with a low image area ratio such as characters and a user who frequently outputs an image with a high image area ratio such as a photograph. As a result, when an image with a low image area rate is frequently output, the travel distance of the application roller 3a until the solid lubricant 3b is in a near-end state is longer than when a high image area rate is frequently output. Become.

上述したように、使用条件により固形潤滑剤3bがニアエンド状態となる塗布ローラ3aの走行距離が異なるので、塗布ローラ3aの走行距離などの動作期間のみでニアエンド状態を判定する場合、全ての使用条件下で精度よくニアエンドを検知することはできない。具体的には、仮に潤滑剤の消費が多い使用条件での固形潤滑剤3bがニアエンド状態となる塗布ローラ3aの走行距離を判定に用いた場合、潤滑剤の消費量が少ない使用条件で使用しているユーザーは、使いきれてない状態で固形潤滑剤3bの交換を行うことになる。また、これとは逆に、潤滑剤の消費量が少ない使用条件での固形潤滑剤3bがニアエンド状態となる塗布ローラ3aの走行距離を判定に用いた場合、潤滑剤の消費が多い使用条件のときにニアエンド状態が検知される前に潤滑剤が枯渇するおそれがある。   As described above, since the travel distance of the application roller 3a in which the solid lubricant 3b is in the near-end state varies depending on the use conditions, when determining the near-end state only in the operation period such as the travel distance of the application roller 3a, all use conditions The near-end cannot be detected with high accuracy. Specifically, if the travel distance of the application roller 3a in which the solid lubricant 3b is in a near-end state under use conditions where the lubricant consumption is large is used for determination, the lubricant is used under conditions where the lubricant consumption is low. The user who is present will replace the solid lubricant 3b in a state where it is not used up. On the other hand, when the travel distance of the application roller 3a in which the solid lubricant 3b is in a near-end state under use conditions where the amount of lubricant consumption is small is used for the determination, Sometimes the lubricant can be depleted before the near-end condition is detected.

一方、本実施例のように、固形潤滑剤3bがニアエンド状態に対応する位置に到達すること(固形潤滑剤3bの高さが所定高さになったこと)を検知することで、使用条件にかかわらず、精度よくニアエンド状態を検知することができる。   On the other hand, as in this embodiment, by detecting that the solid lubricant 3b reaches a position corresponding to the near-end state (the height of the solid lubricant 3b has reached a predetermined height), Regardless, the near-end state can be detected accurately.

しかし、低画像面積率を頻繁に出力する使用条件の場合、粉体状に削り取られた潤滑剤のうち感光体1へ塗布されなかった潤滑剤が収納ケース3eに堆積していく。その結果、収納ケース3eに堆積した潤滑剤の一部が電極部材41の潤滑剤保持部材3dとの当接部に付着する場合がある。この当接部に潤滑剤が付着すると、潤滑剤保持部材3dが電極部材41と当接しても導通状態とならず、潤滑剤のニアエンドを検知することができないおそれがある。その結果、潤滑剤が枯渇した状態で画像形成動作が行われ、感光体1表面が劣化してしまうおそれがある。そこで、塗布ローラ3aの走行距離及び潤滑剤保持部材3dと電極部材41との導通状態の両方で、固形潤滑剤3bのニアエンド状態を検知しても良い。   However, in the use condition in which the low image area ratio is frequently output, the lubricant that has not been applied to the photoreceptor 1 out of the lubricant scraped off in powder form accumulates in the storage case 3e. As a result, part of the lubricant accumulated in the storage case 3e may adhere to the contact portion of the electrode member 41 with the lubricant holding member 3d. If the lubricant adheres to this contact portion, even if the lubricant holding member 3d comes into contact with the electrode member 41, the conductive state is not established, and there is a possibility that the near end of the lubricant cannot be detected. As a result, the image forming operation is performed in a state where the lubricant is depleted, and the surface of the photoreceptor 1 may be deteriorated. Therefore, the near end state of the solid lubricant 3b may be detected by both the travel distance of the application roller 3a and the conduction state of the lubricant holding member 3d and the electrode member 41.

次に、潤滑剤残量検知手段40として、電極部材41と潤滑剤保持部材3dとの導通状態の判断と塗布ローラ3aの走行距離(累積走行距離)の計数判断を併用した構成について説明する。
図7は、本実施例に係る固形潤滑剤量の推移とニアエンド検知のタイミングとを示す図である。
図7に示す固形潤滑剤の高さ:A0は、固形潤滑剤3bの使用初期の高さであり、潤滑剤塗布動作にともない、ある一定の高さ:A1以下になった場合、導通により求める固形潤滑剤3bの残量がニアエンド状態(ニア寿命の状態)であると通知する構成である。しかし、ある一定の高さ:A1以下になるまでは、固形潤滑剤3bの残量を推測することができなくなる。
このような状態を防止するため、導通検知と併用して、塗布ローラ3aの走行距離を計数することで、ある程度の目安を算出することができるようになり、また、より誤検知の発生を防ぐことができる。
Next, a configuration in which the determination of the conduction state between the electrode member 41 and the lubricant holding member 3d and the count determination of the travel distance (cumulative travel distance) of the application roller 3a will be described as the lubricant remaining amount detection means 40.
FIG. 7 is a diagram illustrating the transition of the amount of solid lubricant and the timing of near-end detection according to the present embodiment.
The height of the solid lubricant shown in FIG. 7: A0 is the initial height of the solid lubricant 3b, and is obtained by conduction when the height becomes A1 or less as a result of the lubricant application operation. In this configuration, the remaining amount of the solid lubricant 3b is in a near-end state (near life state). However, the remaining amount of the solid lubricant 3b cannot be estimated until a certain height: A1 or less.
In order to prevent such a situation, it is possible to calculate a certain amount of reference by counting the travel distance of the application roller 3a in combination with the conduction detection, and further prevent the occurrence of erroneous detection. be able to.

そして、塗布ローラ3aの走行距離の閾値:B1を設定し、計数値がこの閾値以上になった場合、固形潤滑剤3bの残量が残りわずかであるニアエンド状態(ニア寿命の状態)として通知する。ニアエンド状態を検知した後は走行距離等の閾値:Btを設定し、ある一定期間動作を行った後、エンド状態(寿命)として機械動作を禁止する。
ここで、塗布ローラ3aの走行距離以外にも、塗布ローラ3aの回転時間等を計数することで、同様の効果を得ることが考えられる。しかし、環境変動等により塗布ローラ3aの回転数を変化させる制御を搭載した場合、走行距離を計数することが、より精度よく寿命を予測できる構成となる。
Then, when the threshold value B1 of the travel distance of the application roller 3a is set and the count value is equal to or greater than this threshold value, a notification is given as a near-end state (near life state) in which the remaining amount of the solid lubricant 3b is small. . After detecting the near-end state, a threshold such as a travel distance: Bt is set, and after a certain period of operation, the machine operation is prohibited as an end state (life).
Here, it is conceivable to obtain the same effect by counting the rotation time of the application roller 3a in addition to the travel distance of the application roller 3a. However, when a control for changing the number of rotations of the application roller 3a due to environmental changes or the like is installed, counting the travel distance is a configuration that can predict the life more accurately.

例えば、潤滑剤塗布量が少なくて良い使用条件である場合、固形潤滑剤3bの高さの減少の推移は少なくなる(図7図中の傾きがねる方向)。しかし、粉体状に削り取られた潤滑剤が感光体1へ塗布されずに収納ケース3eに堆積し、導通部材部に付着して誤検知となっている可能性も考えられる。
そして、図7に示すように、通常の使用条件のときは、塗布ローラ3aの走行距離が所定値B1となる前に、電極部材41と潤滑剤保持部材3dとが導通し、ニアエンド状態(ニア寿命)が検知される。一方、低画像面積率の画像を頻繁に出力するような使用条件のときは、電極部材41と潤滑剤保持部材3dとが導通する前に、塗布ローラ3aの走行距離が所定値B1となり、ニアエンド状態が検知される。そして、ニアエンド状態が検知されてから、塗布ローラ3aの走行距離が、上限値Btとなったら、固形潤滑剤3bのエンド状態として、画像形成動作を禁止する。
For example, when it is a use condition that the amount of the lubricant applied may be small, the transition of the decrease in the height of the solid lubricant 3b is small (the direction in which the inclination in FIG. 7 is twisted). However, there is a possibility that the lubricant scraped off in the form of powder accumulates on the storage case 3e without being applied to the photosensitive member 1 and adheres to the conductive member portion, resulting in erroneous detection.
As shown in FIG. 7, under normal use conditions, the electrode member 41 and the lubricant holding member 3d are brought into conduction before the travel distance of the application roller 3a reaches the predetermined value B1, and the near end state (near end) Life) is detected. On the other hand, when the use condition is such that an image with a low image area ratio is frequently output, the travel distance of the application roller 3a becomes a predetermined value B1 before the electrode member 41 and the lubricant holding member 3d conduct, and the near end. A state is detected. When the travel distance of the application roller 3a reaches the upper limit value Bt after the near end state is detected, the image forming operation is prohibited as the end state of the solid lubricant 3b.

例えば、固形潤滑剤3bの高さが3[mm]のとき、検知部42で電極部材41間の導通を検知してニアエンドを検知する構成とする。そして、通常の使用においては、検知部42が、塗布ローラ3aの走行距離180[km]でニアエンドを検知し、Bt=20[km]、B1=220[km]としたとする。この場合、低画像面積率の使用条件で、250[km]で固形潤滑剤3bの高さが3[mm]となる。このため、検知部42が導通を検知してニアエンド状態を検知する構成でも、塗布ローラ3aの走行距離が、220[km]に到達した段階で、ニアエンド状態と判断され、塗布ローラ3aの走行距離が、240[km]のときに、エンド状態と判断される。   For example, when the height of the solid lubricant 3b is 3 [mm], the detection unit 42 detects the conduction between the electrode members 41 to detect the near end. In normal use, the detection unit 42 detects the near end based on the travel distance 180 [km] of the application roller 3a, and sets Bt = 20 [km] and B1 = 220 [km]. In this case, the height of the solid lubricant 3b is 3 [mm] at 250 [km] under the usage condition of the low image area ratio. For this reason, even in the configuration in which the detection unit 42 detects conduction and detects the near-end state, when the travel distance of the application roller 3a reaches 220 [km], the near-end state is determined and the travel distance of the application roller 3a. Is 240 [km], it is determined as an end state.

また、例えば、高画像での使用条件が多い場合は、クリーニングブレード8aにて塞き止められる転写残トナー量が多いため、摺擦力は低減しブレードの磨耗に対しては有利になる。ただし、ブレードにトナーの入力量が多いとトナーに付着している添加剤等が感光体1に付着し、白ポチ画像が発生することがあるため、通常より多めに潤滑剤を塗布する必要がある。   Further, for example, when there are many use conditions for high images, the amount of residual toner that is blocked by the cleaning blade 8a is large, so that the rubbing force is reduced, which is advantageous for blade wear. However, if the amount of toner input to the blade is large, additives attached to the toner may adhere to the photoreceptor 1 and a white spot image may be generated, so it is necessary to apply more lubricant than usual. is there.

逆に、低画像での使用条件が多い場合には、上記白ポチ画像は発生しにくいため潤滑剤の塗布量は少なめでも不良画像が発生することはない。このため、画像面積率に応じて、塗布量を変えてもよい。   On the other hand, when there are many conditions for using a low image, the white spot image is unlikely to be generated, so that a defective image does not occur even if the amount of lubricant applied is small. For this reason, the application amount may be changed according to the image area ratio.

また、潤滑剤の塗布量が少なめであるため感光体1とブレードの摺擦力は潤滑剤の塗布量が多い条件と比較すると多めになり、潤滑剤の寿命より早くブレードの寿命が早く到達することがある。よって、上記ニアエンド検知に用いる塗布ローラ3aの走行距離B1を、例えば、クリーニングブレード8aの寿命などに基づいて、決定することで、クリーニングブレード8aの寿命により、画像品質が低下する前に、ユニットの交換を行うことができる。   In addition, since the amount of lubricant applied is small, the frictional force between the photosensitive member 1 and the blade becomes larger compared to the condition where the amount of lubricant applied is large, and the blade life reaches earlier than the lubricant life. Sometimes. Therefore, by determining the travel distance B1 of the application roller 3a used for the near-end detection based on the life of the cleaning blade 8a, for example, before the image quality deteriorates due to the life of the cleaning blade 8a, Exchanges can be made.

このように、電極部材41の潤滑剤保持部材3dとの当接部に潤滑剤が付着すると、潤滑剤保持部材3dが電極部材41と当接しても導通状態とならない。このようにして、ニアエンド状態を検知できない事態が生じるおそれがある低画像面積率の画像を頻繁に出力する使用条件のときは、塗布ローラ3aの走行距離でニアエンドを検知する。このように検知することで、ニアエンド状態が検知されずに、そのまま使用され続けることを防止することができる。これにより、感光体1の表面を確実に潤滑剤で保護できる。   As described above, when the lubricant adheres to the contact portion between the electrode member 41 and the lubricant holding member 3d, the conductive state is not established even if the lubricant holding member 3d comes into contact with the electrode member 41. In this way, when the use condition is such that an image with a low image area ratio that may cause a situation in which the near-end state cannot be detected frequently is output, the near-end is detected based on the travel distance of the application roller 3a. By detecting in this way, it is possible to prevent the near-end state from being used as it is without being detected. Thereby, the surface of the photoreceptor 1 can be reliably protected with the lubricant.

上述したように、本実施例の潤滑剤残量検知手段40は、導通検知部の導通状態と、固形潤滑剤3bの残量の目安となる塗布ローラ3aの累積走行距離とに基づいて、固形潤滑剤3bの残量状態を検知する。
これにより、潤滑剤残量検知手段40は、導通検知部の導通状態と、固形潤滑剤3bの残量の目安となる塗布ローラ3aの累積走行距離とに基づいて、固形潤滑剤3bの残量状態を検知するため、滑剤残量検知手段の誤検知を確実に防止することが可能となる。
例えば、潤滑剤消費量が少ない使用条件のユーザーにおいては、感光体1上で必要となる潤滑剤が少なくなる。このため、塗布ローラ3aにより粉体状にされた潤滑剤が固形潤滑剤3bの収納ケース3eに堆積することで導通検知を行う導通検知部の電極部材41や潤滑剤保持部材3dに付着してしまい、導通検知を正常に行えない可能性がある。
一方、塗布ローラ3aの累積走行距離を計数し、ある一定以上となった場合には固形潤滑剤3bの残量が残り僅かになったと判断する構成を導通検知とともに併用した二系統の残量検知手段とすることで、より誤検知による不具合等の防止効果を高めることができる。
As described above, the lubricant remaining amount detecting means 40 according to the present embodiment is based on the conduction state of the conduction detecting unit and the cumulative travel distance of the application roller 3a that is a measure of the remaining amount of the solid lubricant 3b. The remaining amount of the lubricant 3b is detected.
As a result, the remaining amount of the lubricant 3b is detected by the remaining amount of the solid lubricant 3b based on the conduction state of the conduction detection unit and the cumulative travel distance of the application roller 3a that is a measure of the remaining amount of the solid lubricant 3b. Since the state is detected, it is possible to reliably prevent erroneous detection of the lubricant remaining amount detecting means.
For example, a user having a usage condition with a small amount of lubricant consumption requires less lubricant on the photoreceptor 1. For this reason, the lubricant powdered by the application roller 3a is deposited on the storage case 3e of the solid lubricant 3b, thereby adhering to the electrode member 41 and the lubricant holding member 3d of the continuity detection unit that detects continuity. Therefore, there is a possibility that conduction detection cannot be performed normally.
On the other hand, when the cumulative travel distance of the application roller 3a is counted and exceeds a certain level, the remaining amount of solid lubricant 3b is judged to be small and the remaining amount of the two systems is detected together with the continuity detection. By using the means, it is possible to further enhance the effect of preventing problems due to erroneous detection.

また、塗布ローラ3aの累積使用量として、塗布ローラ3aの累積走行距離を用いる。
これにより、次のような効果を奏することができる。
塗布ローラ3aの累積使用量として、回転時間等を計数することも可能であるが、環境変動等による潤滑剤塗布量のばらつきを考慮するため、塗布ローラ3aの回転数を変化させる制御も存在する。このような場合、累積使用時間では回転数の切り替え分を考慮できないため、塗布ローラ3aの累積走行距離を用いて判断することで、より正確に固形潤滑剤3bの残量を検知することが可能となる。
Further, the cumulative travel distance of the application roller 3a is used as the accumulated usage amount of the application roller 3a.
Thereby, the following effects can be produced.
Although it is possible to count the rotation time or the like as the cumulative usage amount of the application roller 3a, there is also control for changing the rotation speed of the application roller 3a in order to take into account variations in the lubricant application amount due to environmental fluctuations and the like. . In such a case, since the amount of rotation change cannot be considered in the accumulated usage time, the remaining amount of the solid lubricant 3b can be detected more accurately by making a determination using the accumulated travel distance of the application roller 3a. It becomes.

また、塗布ローラ3aの走行距離以外にも、塗布ローラ3aの回転時間等を計測することで、ニアエンドを検知しても良い。また、感光体1の走行距離(回転時間)や、通紙枚数で、ニアエンド状態を検知しても良い。また、塗布ローラ3aが、回転駆動する構成で、環境変動等により潤滑剤塗布ローラの回転数を変化させる制御を搭載した場合は、感光体1の走行距離(回転時間)、塗布ローラ3aの回転時間を用いるのが好ましい。
また、ニアエンド後に行う、エンド検知を常に行うようにしても良い。
In addition to the travel distance of the application roller 3a, the near end may be detected by measuring the rotation time of the application roller 3a. Further, the near-end state may be detected by the travel distance (rotation time) of the photosensitive member 1 or the number of sheets passed. In addition, when the application roller 3a is configured to rotate and is equipped with a control that changes the rotation speed of the lubricant application roller due to environmental fluctuations or the like, the travel distance (rotation time) of the photosensitive member 1 and the rotation of the application roller 3a. It is preferred to use time.
Further, end detection performed after the near end may always be performed.

ここで、本実施例の潤滑剤塗布装置3に適用可能な押圧機構3cの他の構成例について、図を用いて説明しておく。
図8は、押圧機構3cの他の構成例である構成例1の概略構成図、図9は、押圧機構3cの別の構成例である構成例2の概略構成図である。
Here, another configuration example of the pressing mechanism 3c applicable to the lubricant application device 3 of the present embodiment will be described with reference to the drawings.
FIG. 8 is a schematic configuration diagram of Configuration Example 1 which is another configuration example of the pressing mechanism 3c, and FIG. 9 is a schematic configuration diagram of Configuration Example 2 which is another configuration example of the pressing mechanism 3c.

図8に示す構成例1の押圧機構300cは、潤滑剤保持部材3dの長手方向両端部付近にそれぞれ設けられ、収納ケース3eに揺動自在に取り付けられた揺動部材301aと、付勢手段であるバネ301bとを有している。バネ301bの各端部がそれぞれ揺動部材301aに取り付けられている。各揺動部材301aは、このバネ301bから潤滑剤保持部材3dの長手方向中心に向かう図中矢印Dの向きの付勢力を得ている。この付勢力によって、図中右側の揺動部材301aは図中時計回りに、図中左側の揺動部材は図中反時計回りに揺動するように付勢される。これにより、各揺動部材301aの潤滑剤保持部材3dと当接する円弧状の当接部311は、図8に示すように潤滑剤保持部材3d側へ付勢される。   The pressing mechanism 300c of the configuration example 1 shown in FIG. 8 is provided in the vicinity of both ends in the longitudinal direction of the lubricant holding member 3d, and is provided with a swinging member 301a swingably attached to the storage case 3e, and an urging unit. A spring 301b. Each end of the spring 301b is attached to the swing member 301a. Each oscillating member 301a obtains a biasing force in the direction of arrow D in the figure from the spring 301b toward the longitudinal center of the lubricant holding member 3d. By this urging force, the swing member 301a on the right side in the figure is biased clockwise in the figure, and the swing member on the left side in the figure is oscillated counterclockwise in the figure. As a result, the arc-shaped contact portion 311 that contacts the lubricant holding member 3d of each swing member 301a is urged toward the lubricant holding member 3d as shown in FIG.

使用初期時においては、各揺動部材301aの揺動端部がバネ301bの付勢力に抗して収納ケース3eの上面部の内周面32へ近づく方向に揺動した状態となっている。このような構成により、2つの揺動部材301aはバネ301bの付勢力を受けて互いに均等な力で潤滑剤保持部材3dを押し、潤滑剤保持部材3dに保持された固形潤滑剤3bを塗布ローラ3aへ押圧する。よって、固形潤滑剤3bは、その長尺方向において塗布ローラ3aへ均一に押圧される。その結果、塗布ローラ3aの回転により摺擦されることで削り取られる潤滑剤の量は、長尺方向において均一となり、感光体1の表面に潤滑剤をムラなく塗布することができる。   In the initial stage of use, the swinging end portion of each swinging member 301a is swung in a direction approaching the inner peripheral surface 32 of the upper surface portion of the storage case 3e against the biasing force of the spring 301b. With such a configuration, the two swinging members 301a receive the urging force of the spring 301b, push the lubricant holding member 3d with equal force, and apply the solid lubricant 3b held by the lubricant holding member 3d to the application roller. Press to 3a. Therefore, the solid lubricant 3b is uniformly pressed against the application roller 3a in the longitudinal direction. As a result, the amount of the lubricant scraped off by the rotation of the application roller 3a is uniform in the longitudinal direction, and the lubricant can be applied evenly on the surface of the photoreceptor 1.

この構成例1の押圧機構300cにおいては、経時使用によって固形潤滑剤3bの高さが減っても固形潤滑剤3bの加圧力の減少を抑制できる。よって、初期から経時にかけて感光体1の表面に供給される粉末潤滑剤の量の変動を小さく抑えることができる。   In the pressing mechanism 300c of Configuration Example 1, even if the height of the solid lubricant 3b decreases due to use over time, a decrease in the applied pressure of the solid lubricant 3b can be suppressed. Therefore, fluctuations in the amount of the powder lubricant supplied to the surface of the photoreceptor 1 from the initial stage over time can be suppressed to a small level.

このような結果が得られる理由は、次の通りである。
一般に、初期から固形潤滑剤3bが無くなるまでの間に変化するバネの伸び変化量に対し、バネ全体の長さを長くすれば長くするほど、バネの伸び変化量に対するバネの付勢力変動は小さくて済む。図3に示した押圧機構3cは、加圧バネ31aを縮めた状態で配置し、その付勢力(押し出し力)の方向と塗布ローラ3aに対する固形潤滑剤3bの押圧方向とを一致させている。
The reason why such a result is obtained is as follows.
In general, as the length of the spring as a whole increases with respect to the amount of change in spring extension that changes from the beginning until the solid lubricant 3b disappears, the variation in the biasing force of the spring with respect to the amount of change in spring spring decreases. I'll do it. The pressing mechanism 3c shown in FIG. 3 is arranged in a state where the pressure spring 31a is contracted, and the direction of the urging force (extrusion force) is made to coincide with the pressing direction of the solid lubricant 3b against the application roller 3a.

このような構成においては、バネ全体の長さを長くするほど、バネの付勢力方向と塗布ローラ3aに対する固形潤滑剤3bの押圧方向とを一致させることが困難となることから、バネ全体の長さを長くするにも限界がある。加えて、図3に示した押圧機構3cでは、塗布ローラ3aの径方向にバネの長さ分の配置スペースを確保しなければならず、装置の大型化につながる。これらの理由から、図3に示した押圧機構3cにおいては、比較的短いバネを使用しなければならず、経時的なバネの付勢力変動が大きくなる。   In such a configuration, the longer the length of the entire spring, the more difficult it is to match the direction of the biasing force of the spring and the pressing direction of the solid lubricant 3b against the application roller 3a. There is a limit to lengthening the length. In addition, in the pressing mechanism 3c shown in FIG. 3, it is necessary to secure an arrangement space for the length of the spring in the radial direction of the application roller 3a, leading to an increase in the size of the apparatus. For these reasons, a relatively short spring must be used in the pressing mechanism 3c shown in FIG. 3, and the urging force fluctuation of the spring over time increases.

これに対し、この構成例1の押圧機構300cにおいては、図8に示したように、バネ301bを伸ばした状態で配置し、その付勢力(引っ張り力)で塗布ローラ3aに対して固形潤滑剤3bを押圧できる。よって、バネ全体の長さを長くしても図3の押圧機構3cのような問題は生じない。しかも、この構成例1の押圧機構300cでは、バネ301bの長さ方向が固形潤滑剤3bの長尺方向すなわち塗布ローラ3aの軸方向に一致するようにバネ301bが配置される。したがって、バネ301bの長さを長くしても、塗布ローラ3aの径方向に配置スペースが広がることはなく、装置を大型化する必要がない。このため、この構成例1の押圧機構300cは、図3に示した押圧機構3cで使用していた加圧バネ31aの長さよりもずっと長いバネ301bを採用でき、その結果、経時的なバネの付勢力変動を小さく抑えることができる。   On the other hand, in the pressing mechanism 300c of the configuration example 1, as shown in FIG. 8, the spring 301b is extended and the solid lubricant is applied to the application roller 3a by its urging force (tensile force). 3b can be pressed. Therefore, even if the length of the entire spring is increased, the problem as in the pressing mechanism 3c in FIG. 3 does not occur. Moreover, in the pressing mechanism 300c of Configuration Example 1, the spring 301b is disposed so that the length direction of the spring 301b coincides with the long direction of the solid lubricant 3b, that is, the axial direction of the application roller 3a. Therefore, even if the length of the spring 301b is increased, the arrangement space does not increase in the radial direction of the application roller 3a, and the apparatus does not need to be enlarged. Therefore, the pressing mechanism 300c of Configuration Example 1 can employ a spring 301b that is much longer than the length of the pressure spring 31a used in the pressing mechanism 3c shown in FIG. The fluctuation of the urging force can be reduced.

また、図9に示す構成例2のように、潤滑剤保持部材3dに各揺動部材301aを揺動自在に取り付けても良い。この図9に示す構成例2においては、各揺動部材301aは、バネ301bから潤滑剤保持部材3dの長手方向中心に向かう付勢力によって、各揺動部材301aの揺動端部が、潤滑剤保持部材3dから離れる方向に付勢される。そして、この付勢により、各揺動部材301aの揺動端部が、収納ケース3eの上面部の内周面32に当接する構成となる。   Further, as in the configuration example 2 shown in FIG. 9, each swinging member 301a may be swingably attached to the lubricant holding member 3d. In the configuration example 2 shown in FIG. 9, each oscillating member 301a has its oscillating end portion of each oscillating member 301a lubricated by a biasing force from the spring 301b toward the longitudinal center of the lubricant holding member 3d. It is biased in the direction away from the holding member 3d. And by this urging | biasing, it becomes the structure which the rocking | fluctuation end part of each rocking | fluctuation member 301a contact | abuts to the internal peripheral surface 32 of the upper surface part of the storage case 3e.

また、固形潤滑剤3bのニアエンド検知としては、上述した構成に限られず、例えば、電極部材41に替えてプッシュスイッチにしても良い。この場合、潤滑剤保持部材3dが、固形潤滑剤3bのニアエンド状態のときに対応する位置に到達すると、潤滑剤保持部材3dがプッシュスイッチを押し込み、ニアエンド状態が検知される。この場合も、潤滑剤塗布動作中にニアエンド状態の検知を行うと、潤滑剤保持部材3dの振動により、プッシュスイッチの押圧が不安定となり、誤検知を起こすおそれがある。よって、この場合においても、潤滑剤塗布動作停止中に残量検知を行うことで、正確にニアエンド状態の検知を行うことができる。   Further, the near-end detection of the solid lubricant 3b is not limited to the above-described configuration, and may be a push switch instead of the electrode member 41, for example. In this case, when the lubricant holding member 3d reaches the corresponding position when the solid lubricant 3b is in the near end state, the lubricant holding member 3d pushes the push switch, and the near end state is detected. Also in this case, if the near-end state is detected during the lubricant application operation, the push switch may become unstable due to vibration of the lubricant holding member 3d, which may cause erroneous detection. Therefore, even in this case, the near end state can be accurately detected by detecting the remaining amount while the lubricant application operation is stopped.

(実施例2)
次に、本実施形態の潤滑剤塗布装置3の実施例2について、図を用いて説明する。
図10は、本実施例に係る潤滑剤塗布装置3に設けた潤滑剤残量検知手段140の概略構成図であり、図10(a)が、固形潤滑剤3bの使用初期状態を示す概略構成図、図10(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示す概略構成図である。図11は、本実施例に係る潤滑剤塗布装置3に設けた潤滑剤残量検知手段140の断面説明図であり、図11(a)が、固形潤滑剤3bの使用初期状態を示し、図11(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示している。なお、図11(a)、(b)では、仕切り壁143bを省略して記載している。
(Example 2)
Next, Example 2 of the lubricant application device 3 of the present embodiment will be described with reference to the drawings.
FIG. 10 is a schematic configuration diagram of the lubricant remaining amount detecting means 140 provided in the lubricant application device 3 according to the present embodiment, and FIG. 10A is a schematic configuration showing an initial use state of the solid lubricant 3b. FIG. 10 and FIG. 10B are schematic configuration diagrams showing a state where the solid lubricant 3b remains slightly (near-end state). FIG. 11 is a cross-sectional explanatory view of the lubricant remaining amount detecting means 140 provided in the lubricant application device 3 according to the present embodiment. FIG. 11 (a) shows an initial use state of the solid lubricant 3b. 11 (b) shows a state where the solid lubricant 3b remains slightly (near-end state). In FIGS. 11A and 11B, the partition wall 143b is omitted.

本実施例の潤滑剤塗布装置3と、実施例1の潤滑剤塗布装置とでは、潤滑剤塗布装置3に設けた潤滑剤残量検知手段140の構成に係る点のみ異なる。したがって、実施例1と同一又は同様な構成、及びその作用・効果については、適宜、省略して説明するとともに、特に、区別する必要が無い限り、同一又は同様な構成部材については、同一の符号を付して説明する。   The lubricant application device 3 according to the present embodiment is different from the lubricant application device according to the first embodiment only in respect of the configuration of the lubricant remaining amount detecting means 140 provided in the lubricant application device 3. Therefore, the same or similar configurations as in the first embodiment, and the operations and effects thereof will be appropriately omitted and described, and unless otherwise distinguished, the same or similar components are denoted by the same reference numerals. Will be described.

図10に示すように、本実施例の潤滑剤残量検知手段140においては、回転電極部材141と、固形潤滑剤3bがニアエンド状態のとき、回転電極部材141と当接する電極部材142a、抵抗検知部142c等を有している。抵抗検知部142cは、電極部材142aと回転電極部材141とに接続されており、電極部材142aと回転電極部材141との間に電圧を印加して、電気抵抗を計測する。回転電極部材141、電極部材142aは、これらを覆うカバー部材143に位置決め保持されている。電極部材142aは、回転電極部材141よりも鉛直方向上方に配置されている。   As shown in FIG. 10, in the lubricant remaining amount detecting means 140 of this embodiment, when the rotating electrode member 141 and the solid lubricant 3b are in the near-end state, the electrode member 142a that contacts the rotating electrode member 141, and resistance detection Part 142c and the like. The resistance detection unit 142c is connected to the electrode member 142a and the rotary electrode member 141, and measures the electrical resistance by applying a voltage between the electrode member 142a and the rotary electrode member 141. The rotating electrode member 141 and the electrode member 142a are positioned and held by a cover member 143 that covers them. The electrode member 142a is disposed above the rotating electrode member 141 in the vertical direction.

収納ケース3eの塗布ローラ3aと固形潤滑剤3bとの当接部よりも塗布ローラ3aの回転方向下流側の側面には、潤滑剤保持部材3dの移動方向に延びる開口部31eが設けられている。この開口部31eに押し部材としての潤滑剤保持部材3dに設けられた当接突起部31dが貫通している(図11参照)。また、カバー部材143には、カバー部材143で覆われた空間を、開口部31eが配置された空間と、電極部材142aが配置された空間とに仕切る仕切り壁143bが設けられている。   An opening 31e extending in the moving direction of the lubricant holding member 3d is provided on the side surface on the downstream side in the rotation direction of the application roller 3a with respect to the contact portion between the application roller 3a and the solid lubricant 3b of the storage case 3e. . A contact protrusion 31d provided on a lubricant holding member 3d as a pushing member passes through the opening 31e (see FIG. 11). Further, the cover member 143 is provided with a partition wall 143b that partitions the space covered by the cover member 143 into a space in which the opening 31e is arranged and a space in which the electrode member 142a is arranged.

回転電極部材141は、カバー部材143の回転軸143cに回転自在に支持されている。図11(a)に示すように、使用初期においては、潤滑剤保持部材3dに設けられた当接突起部31dは、回転電極部材141から離間しており、回転電極部材141は、仕切り壁143bに当接して回転電極部材141の自重による回転が規制されている。このとき、回転電極部材141は電極部材142aから離間している。よって、このとき、抵抗検知部142cにより、電極部材142aと回転電極部材141との間に電圧を印加しても電極部材142aと回転電極部材141との間に電流が流れず、電気抵抗値の測定が不能な状態である。   The rotating electrode member 141 is rotatably supported on the rotating shaft 143c of the cover member 143. As shown in FIG. 11A, in the initial use, the contact protrusion 31d provided on the lubricant holding member 3d is separated from the rotating electrode member 141, and the rotating electrode member 141 is separated from the partition wall 143b. The rotation of the rotating electrode member 141 by its own weight is restricted. At this time, the rotating electrode member 141 is separated from the electrode member 142a. Therefore, at this time, even if a voltage is applied between the electrode member 142a and the rotating electrode member 141 by the resistance detection unit 142c, no current flows between the electrode member 142a and the rotating electrode member 141, and the electric resistance value is reduced. Measurement is impossible.

固形潤滑剤3bが削られ潤滑剤が消費され固形潤滑剤3bの高さが低くなっていくと、潤滑剤保持部材3dが塗布ローラ3a側へ近づいていく。そして、固形潤滑剤3bの高さが所定値となると、潤滑剤保持部材3dに設けられた当接突起部31dが回転電極部材141に当接する。さらに固形潤滑剤3bが削られ、高さが低くなると、当接突起部31dにより回転電極部材141の図中右側端部が押され、回転電極部材141が自重による回転方向と逆方向(図中時計回り)に回転する。そして、図10(b)、図11(b)に示すように、潤滑剤の量が残り僅か(ニアエンド)となると、回転電極部材141が電極部材42aと当接する。   When the solid lubricant 3b is scraped, the lubricant is consumed, and the height of the solid lubricant 3b decreases, the lubricant holding member 3d approaches the application roller 3a side. When the height of the solid lubricant 3b reaches a predetermined value, the contact protrusion 31d provided on the lubricant holding member 3d contacts the rotating electrode member 141. When the solid lubricant 3b is further shaved and the height is lowered, the contact projection 31d pushes the right end of the rotating electrode member 141 in the figure, and the rotating electrode member 141 is in a direction opposite to the rotation direction due to its own weight (in the figure). Rotate clockwise. Then, as shown in FIGS. 10 (b) and 11 (b), when the amount of lubricant is small (near end), the rotating electrode member 141 comes into contact with the electrode member 42a.

回転電極部材141が電極部材142aに当接すると、回転電極部材141と電極部材142aとが非導通状態から導通状態に切り替わる。これにより、抵抗検知部42cにより電極部材142aと回転電極部材141との間に電圧を印加すると、電極部材間に電流が流れる。その結果、抵抗検知部42cで電気抵抗値が計測され、回転電極部材141が固形潤滑剤3bの消費にともない回転したことが検知され、固形潤滑剤3bのニアエンド状態を検知することができる。   When the rotating electrode member 141 contacts the electrode member 142a, the rotating electrode member 141 and the electrode member 142a are switched from the non-conducting state to the conducting state. Thereby, when a voltage is applied between the electrode member 142a and the rotating electrode member 141 by the resistance detection unit 42c, a current flows between the electrode members. As a result, the electrical resistance value is measured by the resistance detection unit 42c, and it is detected that the rotating electrode member 141 is rotated as the solid lubricant 3b is consumed, and the near-end state of the solid lubricant 3b can be detected.

この潤滑剤残量検知手段140は、固形潤滑剤3bの消費にともない回転する回転電極部材141を用いている。そして、回転電極部材141の当接突起部31dと当接する箇所と回転支点を挟んで反対側の箇所を、電極部材142aに当接させることにより潤滑剤のニアエンドを検知するようにしている。このように、構成することで、図11に示すように、電極部材142aと回転電極部材141との当接箇所を、固形潤滑剤3bと塗布ローラ3aとの当接部から離れた位置に設けることができる。これにより、塗布ローラ3aにより削れた潤滑剤粉が、電極部材142aの回転電極部材141との当接部や、回転電極部材141の電極部材142aとの当接部に付着するのを抑制することができる。このように抑制することで、各電極部材に付着した潤滑剤により電極部材間に導通不良が生じるのを抑制することができ、精度よく固形潤滑剤3bのニアエンド状態を検知することができる。   The lubricant remaining amount detecting means 140 uses a rotating electrode member 141 that rotates as the solid lubricant 3b is consumed. Then, the near end of the lubricant is detected by bringing the portion of the rotating electrode member 141 in contact with the contact protrusion 31d and the portion on the opposite side of the rotation fulcrum into contact with the electrode member 142a. By configuring in this way, as shown in FIG. 11, the contact portion between the electrode member 142a and the rotary electrode member 141 is provided at a position away from the contact portion between the solid lubricant 3b and the application roller 3a. be able to. Thereby, the lubricant powder scraped by the application roller 3a is prevented from adhering to the contact portion of the electrode member 142a with the rotating electrode member 141 or the contact portion of the rotating electrode member 141 with the electrode member 142a. Can do. By suppressing in this way, it can suppress that a conduction | electrical_connection defect arises between electrode members with the lubricant adhering to each electrode member, and can detect the near end state of the solid lubricant 3b accurately.

また、潤滑剤残量検知手段140を収納ケース3eの外に設けたので、飛散した潤滑剤粉が電極部材142aや回転電極部材141の電極部材142aとの当接部に付着するのを抑制することができる。
また、本実施例においては、回転電極部材141の電極部材142aとの当接部を当接突起部31dとの当接部よりも鉛直方向上方に配置するなどにして、電極部材を、鉛直上方に配置している。これにより、開口部31eから進入してきた潤滑剤粉が、電極部材142aに付着するのを抑制することができる。また、回転電極部材141の電極部材142aとの当接部を当接突起部31dとの当接部よりも鉛直方向上方に配置することで、回転電極部材141の回転量が少なくとも、電極部材142aを、十分に鉛直上方に配置することができる。
Further, since the lubricant remaining amount detecting means 140 is provided outside the storage case 3e, the scattered lubricant powder is prevented from adhering to the contact portions of the electrode member 142a and the rotating electrode member 141 with the electrode member 142a. be able to.
Further, in the present embodiment, the electrode member is moved vertically upward by arranging the contact portion of the rotating electrode member 141 with the electrode member 142a vertically above the contact portion with the contact protrusion 31d. Is arranged. Thereby, it can suppress that the lubricant powder which entered from the opening part 31e adheres to the electrode member 142a. Further, by arranging the contact portion of the rotating electrode member 141 with the electrode member 142a vertically above the contact portion with the contact protrusion 31d, the amount of rotation of the rotating electrode member 141 is at least the electrode member 142a. Can be sufficiently vertically arranged.

更に、仕切り壁143bにより、カバー部材143で覆われた空間を、開口部31eが設けられた空間と、電極部材142aが設けられた空間とに仕切っている。これにより、開口部31eから進入してきた潤滑剤粉が、電極部材142aに付着するのをより一層抑制することができる。また、カバー部材143と仕切り壁143bとを樹脂で一体成形するのが好ましい。これにより、カバー部材143と仕切り壁143bとを別部材で構成した場合に比べて、部品点数を削減でき、装置を安価にすることができる。   Further, the partition wall 143b partitions the space covered with the cover member 143 into a space provided with the opening 31e and a space provided with the electrode member 142a. Thereby, it is possible to further suppress the lubricant powder entering from the opening 31e from adhering to the electrode member 142a. Moreover, it is preferable to integrally mold the cover member 143 and the partition wall 143b with resin. Thereby, compared with the case where the cover member 143 and the partition wall 143b are comprised by another member, a number of parts can be reduced and an apparatus can be made cheap.

また、収納ケース3eに仕切り壁143bを設けても良い。この場合も、収納ケース3eと仕切り壁143bとを樹脂で一体成形することで、部品点数を削減でき、装置を安価にすることができる。また、カバー部材143、収納ケース3eそれぞれに仕切り壁を設けて、組み合わせることで、カバー部材143で覆われた空間を、開口部31eが設けられた空間と、各電極部材が設けられた空間とに仕切っても良い。   Further, a partition wall 143b may be provided in the storage case 3e. Also in this case, by integrally molding the storage case 3e and the partition wall 143b with resin, the number of parts can be reduced and the apparatus can be made inexpensive. In addition, a partition wall is provided in each of the cover member 143 and the storage case 3e and combined to form a space covered with the cover member 143, a space provided with the opening 31e, and a space provided with each electrode member. It may be partitioned into

また、カバー部材143で開口部31e、電極部材142a、回転電極部材141を覆っている。これにより、開口部31eから潤滑剤塗布装置3外へ潤滑剤粉が飛散するのを抑制することができ、装置が汚れるのを抑制することができる。また、飛散トナーなどが、電極部材142aや回転電極部材141の電極部材142aとの当接部に付着するのを抑制することができ、各電極部材間に導通不良が生じるのを抑制することができる。   Further, the cover member 143 covers the opening 31e, the electrode member 142a, and the rotating electrode member 141. Thereby, it can suppress that lubricant powder disperses out of the lubricant application apparatus 3 from the opening part 31e, and can suppress that an apparatus becomes dirty. Further, scattered toner or the like can be prevented from adhering to the contact portion of the electrode member 142a or the rotating electrode member 141 with the electrode member 142a, and the occurrence of poor conduction between the electrode members can be suppressed. it can.

また、本実施例においては、カバー部材143に電極部材142a、回転電極部材141を位置決め保持している。このように、同一の部材に電極部材142a、回転電極部材141を位置決め保持することで、部品公差を最小限に抑えることができる。これにより、電極部材142a、回転電極部材141のそれぞれの位置関係を精度よく出すことができる。これにより、固形潤滑剤3bがニアエンド状態のときに、確実に電極部材142aに回転電極部材141を当接させることができ、精度よく潤滑剤のニアエンド状態を検知することができる。また、カバー部材143を収納ケース3eから取り外すだけで、潤滑剤残量検知手段140を、潤滑剤塗布装置3から取り外すことができ、潤滑剤残量検知手段140の交換作業を容易に行うことができる。   In this embodiment, the electrode member 142a and the rotating electrode member 141 are positioned and held on the cover member 143. Thus, by positioning and holding the electrode member 142a and the rotating electrode member 141 on the same member, component tolerance can be minimized. Thereby, each positional relationship of the electrode member 142a and the rotating electrode member 141 can be taken out accurately. Thereby, when the solid lubricant 3b is in the near-end state, the rotating electrode member 141 can be reliably brought into contact with the electrode member 142a, and the near-end state of the lubricant can be detected with high accuracy. Further, the lubricant remaining amount detecting means 140 can be removed from the lubricant applying device 3 simply by removing the cover member 143 from the storage case 3e, and the replacement work of the lubricant remaining amount detecting means 140 can be easily performed. it can.

(実施例3)
次に、本実施形態の潤滑剤塗布装置3の実施例3について、図を用いて説明する。
図12は、本実施例に係る潤滑剤塗布装置3に設けた潤滑剤残量検知手段240の概略構成図であり、図12(a)が、固形潤滑剤3bの使用初期状態を示す概略構成図、図12(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示す概略構成図である。図13は、図12のA−A断面説明図であり、図13(a)が、固形潤滑剤3bの使用初期状態を示し、図13(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示している。図14は、図12のB−B断面説明図であり、図14(a)が、固形潤滑剤3bの使用初期状態を示し、図14(b)が、固形潤滑剤3bが残り僅かな状態(ニアエンド状態)を示している。なお、潤滑剤塗布装置3の長手方向他端側は、一端側と同様な構成である。
(Example 3)
Next, Example 3 of the lubricant application device 3 according to the present embodiment will be described with reference to the drawings.
FIG. 12 is a schematic configuration diagram of the remaining lubricant detecting means 240 provided in the lubricant application device 3 according to the present embodiment, and FIG. 12A is a schematic configuration showing an initial use state of the solid lubricant 3b. FIG. 12 and FIG. 12B are schematic configuration diagrams showing a state where the solid lubricant 3b remains slightly (near-end state). FIG. 13 is a cross-sectional explanatory view taken along the line AA of FIG. 12, where FIG. 13 (a) shows an initial use state of the solid lubricant 3b, and FIG. 13 (b) shows a state in which the solid lubricant 3b remains slightly. (Near-end state). 14 is a cross-sectional explanatory view taken along the line B-B of FIG. 12. FIG. 14 (a) shows an initial use state of the solid lubricant 3 b, and FIG. 14 (b) shows a state where the solid lubricant 3 b remains slightly. (Near-end state). In addition, the longitudinal direction other end side of the lubricant application device 3 has the same configuration as the one end side.

本実施例の潤滑剤塗布装置3と、実施例1、2の潤滑剤塗布装置とでは、潤滑剤塗布装置3に設けた潤滑剤残量検知手段140の構成に係る点のみ異なる。したがって、実施例1、2と同一又は同様な構成、及びその作用・効果については、適宜、省略して説明するとともに、特に、区別する必要が無い限り、同一又は同様な構成部材については、同一の符号を付して説明する。   The lubricant application device 3 of the present embodiment is different from the lubricant application devices of Embodiments 1 and 2 only in the point relating to the configuration of the lubricant remaining amount detection means 140 provided in the lubricant application device 3. Therefore, the same or similar configurations as in the first and second embodiments, and the operations and effects thereof will be omitted as appropriate, and the same or similar components will be the same unless otherwise distinguished. This will be described with reference numerals.

図12に示すように、本実施例の潤滑剤残量検知手段240は、回転部材241と、回転部材241の回動を検知する回動検知手段としての回動検知部242とを有している。回動検知部242は、第一電極部材242a、この第一電極部材242aに対向配置された第二電極部材242b、抵抗検知部242cなどを有している。抵抗検知部242cは、第一電極部材242aと第二電極部材242bとに接続されており、第一電極部材242aと第二電極部材242bとの間に電圧を印加して、電気抵抗を計測する。また、抵抗検知部242cは、制御部100に接続されている。回転部材241、第一電極部材242a、第二電極部材242bは、これらを覆うカバー部材243に位置決め保持されている。   As shown in FIG. 12, the lubricant remaining amount detection means 240 of this embodiment includes a rotation member 241 and a rotation detection unit 242 as a rotation detection means that detects the rotation of the rotation member 241. Yes. The rotation detection unit 242 includes a first electrode member 242a, a second electrode member 242b disposed to face the first electrode member 242a, a resistance detection unit 242c, and the like. The resistance detector 242c is connected to the first electrode member 242a and the second electrode member 242b, and applies a voltage between the first electrode member 242a and the second electrode member 242b to measure the electrical resistance. . The resistance detection unit 242c is connected to the control unit 100. The rotating member 241, the first electrode member 242a, and the second electrode member 242b are positioned and held by a cover member 243 that covers them.

第一電極部材242a、第二電極部材242bは、板金などの導電性部材からなる板状形状であり、第二電極部材242bの図中右側端部(固形潤滑剤長手方向端部)側が第一電極部材242a側に撓み可能にカバー部材243に保持されている。また、第二電極部材242bの図中右側端部側は、第一電極部材242a側に折り曲げられている。   The first electrode member 242a and the second electrode member 242b have a plate shape made of a conductive member such as a sheet metal, and the right end (solid lubricant longitudinal direction end) side of the second electrode member 242b in the drawing is the first. The cover member 243 is held so as to be able to bend toward the electrode member 242a side. Further, the right end portion side of the second electrode member 242b in the drawing is bent toward the first electrode member 242a side.

また、収納ケース3eの塗布ローラ3aと固形潤滑剤3bとの当接部よりも塗布ローラ3aの回転方向下流側の側面には、潤滑剤保持部材3dの移動方向に延びる開口部31eが設けられている。回転部材241の一端(図中右端)には、上記開口部31eを貫通して潤滑剤保持部材3dに当接する当接部241bが設けられている。回転部材241の他端には、第二電極部材242bを押して、第二電極部材242bを第一電極部材242aに当接させて回転部材241が回動したことが検知される被検知部241aが設けられている。   Further, an opening 31e extending in the moving direction of the lubricant holding member 3d is provided on the side surface on the downstream side in the rotation direction of the application roller 3a with respect to the contact portion between the application roller 3a and the solid lubricant 3b of the storage case 3e. ing. One end (right end in the figure) of the rotating member 241 is provided with an abutting portion 241b that penetrates the opening 31e and abuts against the lubricant holding member 3d. At the other end of the rotating member 241, a detected portion 241a that detects that the rotating member 241 has been rotated by pressing the second electrode member 242b and bringing the second electrode member 242b into contact with the first electrode member 242a is detected. Is provided.

当接部241bは、図13に示すように、回転部材241の軸部から開口部31e側へ所定長さ延びた部分と、その部分の先端から鉛直方向に延びて、固形潤滑剤長手方向に直交する平面部分とで構成されている。当接部241bを上記構成とすることで、回転部材241は、自重で図中反時計回りに回動する。また、図13に示すように、潤滑剤塗布装置3は、鉛直方向(図中上下方向)に対して、図中時計回りに傾いている。よって、潤滑剤残量検知手段240を収納ケース3eの潤滑剤保持部材3dよりも上方に位置する側面に設けることで、回転部材241の自重による回動により、当接部241bを潤滑剤保持部材3dに当接させることができる。   As shown in FIG. 13, the contact portion 241 b includes a portion extending a predetermined length from the shaft portion of the rotating member 241 toward the opening 31 e, and a vertical direction extending from the tip of the portion to the longitudinal direction of the solid lubricant. It is composed of orthogonal plane portions. When the contact portion 241b has the above-described configuration, the rotating member 241 rotates counterclockwise in the figure by its own weight. Further, as shown in FIG. 13, the lubricant application device 3 is inclined clockwise in the figure with respect to the vertical direction (up and down direction in the figure). Therefore, by providing the lubricant remaining amount detecting means 240 on the side surface located above the lubricant holding member 3d of the storage case 3e, the contact portion 241b is turned by the rotation of the rotating member 241 due to its own weight. It can be brought into contact with 3d.

また、カバー部材243には、カバー部材243で覆われた空間を、開口部31eが配置された空間と、第一電極部材242a及び第二電極部材242bとが配置された空間とに仕切る仕切り壁243bが設けられている。回転部材241は、図12に示すように、仕切り壁243bに設けられた貫通穴243cを貫通している。また、当接部241bが設けられた一端部が、開口部31eが配置された空間に位置している。そして、被検知部241aが設けられた他端部が、第一電極部材242a、第二電極部材242bが配置された空間に位置している。   The cover member 243 is a partition wall that partitions the space covered by the cover member 243 into a space in which the opening 31e is arranged and a space in which the first electrode member 242a and the second electrode member 242b are arranged. 243b is provided. As shown in FIG. 12, the rotating member 241 passes through a through hole 243c provided in the partition wall 243b. Moreover, the one end part in which the contact part 241b was provided is located in the space where the opening part 31e is arrange | positioned. And the other end part in which the to-be-detected part 241a was provided is located in the space where the 1st electrode member 242a and the 2nd electrode member 242b are arrange | positioned.

また、カバー部材243の側壁部には、回転部材241の回動を規制する規制手段としての回動規制部243dが、設けられている。回動規制部243dは、カバー部材243の固形潤滑剤長手方向中央側の側壁部(図12の左側の側壁部)から、回転部材241側に延び、図14(a)に示すように、先端部が、被検知部241a所定の隙間を有して対向している。   In addition, a rotation restricting portion 243 d as a restricting means for restricting the rotation of the rotating member 241 is provided on the side wall portion of the cover member 243. The rotation restricting portion 243d extends from the side wall portion (the left side wall portion in FIG. 12) of the solid lubricant in the longitudinal direction of the cover member 243 to the rotating member 241 side, and as shown in FIG. Are opposed to each other with a predetermined gap.

図13(a)に示すように、使用初期においては、回転部材241の当接部241bが、潤滑剤保持部材3dに突き当てっており、回転部材241の自重による回転が規制されている。このとき、図12(a)、図14(a)に示すように、回転部材241の被検知部241aは、第二電極部材242bを押しておらず、第二電極部材242bは、第一電極部材242aから離間している。
よって、このとき、抵抗検知部242cにより、第一電極部材242aと第二電極部材242bとの間に電圧を印加しても第一電極部材242aと第二電極部材242bとの間に電流が流れず、電気抵抗値の測定が不能な状態である。
As shown in FIG. 13A, in the initial stage of use, the contact portion 241b of the rotating member 241 abuts against the lubricant holding member 3d, and rotation due to the weight of the rotating member 241 is restricted. At this time, as shown in FIGS. 12A and 14A, the detected portion 241a of the rotating member 241 does not press the second electrode member 242b, and the second electrode member 242b It is separated from 242a.
Therefore, at this time, even if a voltage is applied between the first electrode member 242a and the second electrode member 242b by the resistance detector 242c, a current flows between the first electrode member 242a and the second electrode member 242b. In other words, the electrical resistance value cannot be measured.

固形潤滑剤3bが削られ潤滑剤が消費され固形潤滑剤3bの高さが低くなっていくと、潤滑剤保持部材3dが塗布ローラ3a側へ近づいていく。そして、固形潤滑剤3bの高さが所定値以下(ニアエンド状態)となると、当接部41bが、潤滑剤保持部材3dの側面から離間する。すると、回転部材241が自重で回動し、被検知部241aが第二電極部材242bを押し込む。これにより、第二電極部材242bが第一電極部材242a側に撓み、図12(b)に示すように、第二電極部材242bの先端(図中右側端部)が、第一電極部材242aと当接する。   When the solid lubricant 3b is scraped, the lubricant is consumed, and the height of the solid lubricant 3b decreases, the lubricant holding member 3d approaches the application roller 3a side. When the height of the solid lubricant 3b is equal to or less than a predetermined value (near end state), the contact portion 41b is separated from the side surface of the lubricant holding member 3d. Then, the rotating member 241 rotates by its own weight, and the detected part 241a pushes in the second electrode member 242b. As a result, the second electrode member 242b bends toward the first electrode member 242a, and as shown in FIG. 12B, the tip of the second electrode member 242b (the right end portion in the figure) is connected to the first electrode member 242a. Abut.

第二電極部材242bが第一電極部材242aに当接すると、第二電極部材242bと第一電極部材242aとが非導通状態から導通状態に切り替わる。これにより、抵抗検知部242cにより第一電極部材242aと第二電極部材242bとの間に電圧を印加すると、各電極部材間に電流が流れる。その結果、抵抗検知部242cで電気抵抗値が計測され、固形潤滑剤3bがニアエンド状態となり、回転部材241が回動したことを検知することができる。   When the second electrode member 242b comes into contact with the first electrode member 242a, the second electrode member 242b and the first electrode member 242a are switched from the non-conductive state to the conductive state. Accordingly, when a voltage is applied between the first electrode member 242a and the second electrode member 242b by the resistance detection unit 242c, a current flows between the electrode members. As a result, the electrical resistance value is measured by the resistance detector 242c, and it can be detected that the solid lubricant 3b is in the near-end state and the rotating member 241 is rotated.

本実施例においては、固形潤滑剤3bがニアエンド状態になるまで第一電極部材242aと第二電極部材42bとが非通電状態となっており、各電極部材間に電圧を印加しても電流が流れない。これにより、ニアエンド検知の度に電力が消費されることがないので、電力消費の低減を図ることができる。また、板金などの比較的安価な材料で構成される第一電極部材242a、第二電極部材242bで、回動検知部242を構成することができ、回動検知部242を安価にすることができる。   In the present embodiment, the first electrode member 242a and the second electrode member 42b are in a non-energized state until the solid lubricant 3b is in a near-end state, and current is applied even when a voltage is applied between the electrode members. Not flowing. Thereby, since power is not consumed every time near-end is detected, power consumption can be reduced. Further, the rotation detection unit 242 can be configured by the first electrode member 242a and the second electrode member 242b made of a relatively inexpensive material such as a sheet metal, and the rotation detection unit 242 can be made inexpensive. it can.

また、本実施例の潤滑剤残量検知手段240は、固形潤滑剤3bの長手方向に延びる回転部材241の一端の当接部241bを潤滑剤保持部材3dに当接させ、回転部材241の他端に被検知部241aを設けている。そして、被検知部241aの回動を回動検知部242で検知して、固形潤滑剤3bのニアエンド状態を検知する。このように構成することで、図12(a)に示すように、固形潤滑剤3bのニアエンド状態を検知するための検知部(第一電極部材242aと第二電極部材242bとの当接部)を、開口部31eから離れた位置に設けることができる。これにより、塗布ローラ3aにより削れた潤滑剤粉が、第一電極部材242aの第二電極部材242bとの当接部や、第二電極部材242bの第一電極部材242aとの当接部に付着するのを抑制することができる。このように抑制することで、各電極部材に付着した潤滑剤により各電極部材間に導通不良が生じるのを抑制することができ、精度よく固形潤滑剤3bのニアエンド状態を検知することができる。   Further, the lubricant remaining amount detecting means 240 of the present embodiment causes the contact portion 241b of one end of the rotating member 241 extending in the longitudinal direction of the solid lubricant 3b to contact the lubricant holding member 3d, and the rotating member 241 A detected portion 241a is provided at the end. Then, the rotation of the detected part 241a is detected by the rotation detection part 242, and the near end state of the solid lubricant 3b is detected. By configuring in this way, as shown in FIG. 12A, a detection unit for detecting the near-end state of the solid lubricant 3b (a contact portion between the first electrode member 242a and the second electrode member 242b). Can be provided at a position away from the opening 31e. Thereby, the lubricant powder scraped by the application roller 3a adheres to the contact portion of the first electrode member 242a with the second electrode member 242b and the contact portion of the second electrode member 242b with the first electrode member 242a. Can be suppressed. By suppressing in this way, it can suppress that a conduction defect arises between each electrode member with the lubricant adhering to each electrode member, and can detect the near end state of the solid lubricant 3b with high precision.

また、フォトインタラプタにて固形潤滑剤3bのニアエンド状態を検知する構成にすることもできる。この場合は、電極部材の配置位置にフォトインタラプタを配置する。潤滑剤保持部材3dが、潤滑剤ニアエンドのときに対応する位置に到達すると、潤滑剤保持部材3dが光を遮ることで、固形潤滑剤3bのニアエンド状態が検知される。この場合も潤滑剤塗布動作中にニアエンド検知を行うと、潤滑剤保持部材3dの振動により誤検知を起こすおそれがある。よって、この場合においても、潤滑剤塗布動作停止中に残量検知を行うことで、正確に固形潤滑剤3bのニアエンド状態の検知を行うことができる。   Moreover, it can also be set as the structure which detects the near end state of the solid lubricant 3b with a photo interrupter. In this case, a photo interrupter is arranged at the arrangement position of the electrode member. When the lubricant holding member 3d reaches a position corresponding to the lubricant near end, the lubricant holding member 3d blocks the light, and the near end state of the solid lubricant 3b is detected. Also in this case, if near-end detection is performed during the lubricant application operation, there is a risk of erroneous detection due to vibration of the lubricant holding member 3d. Therefore, even in this case, the near end state of the solid lubricant 3b can be accurately detected by detecting the remaining amount while the lubricant application operation is stopped.

また、フォトリフレクタを用いて、固形潤滑剤3bのニアエンド状態を検知することもできる。この場合は、潤滑剤保持部材3dが、固形潤滑剤3bのニアエンド状態のときに対応する位置にあるとき、フォトリフレクタと対向する箇所に反射板を設けることで、固形潤滑剤3bのニアエンド状態を検知することができる。
但し、フォトインタラプタのような透過型フォトセンサやフォトリフレクタのような発光部と受光部から構成されるセンサでは、潤滑剤塗布装置3の近傍に配置する必要が生じる場合が多い。このため、電極部材41や潤滑剤保持部材3dなどの導電性部材を有した導通検知部を備えた構成に比べて、設置スペースが大きくなるおそれがある。
Moreover, the near-end state of the solid lubricant 3b can also be detected using a photo reflector. In this case, when the lubricant holding member 3d is in a position corresponding to the solid lubricant 3b in the near-end state, the near-end state of the solid lubricant 3b is obtained by providing a reflector at a position facing the photo reflector. Can be detected.
However, in many cases, a transmission type photosensor such as a photo interrupter or a sensor composed of a light emitting unit and a light receiving unit such as a photo reflector needs to be disposed in the vicinity of the lubricant application device 3. For this reason, compared with the structure provided with the conduction | electrical_connection detection part which has electroconductive members, such as the electrode member 41 and the lubricant holding member 3d, there exists a possibility that an installation space may become large.

(実施例4)
次に、本実施形態の潤滑剤塗布装置3の実施例4について、図を用いて説明する。
図15は、本実施例に係る潤滑剤塗布装置3の固形潤滑剤3bの残量検知における制御フロー図、図16は、本実施例に係る固形潤滑剤量の推移とニアエンド検知のタイミングとを示す図である。
Example 4
Next, Example 4 of the lubricant application device 3 of the present embodiment will be described with reference to the drawings.
FIG. 15 is a control flow chart for detecting the remaining amount of the solid lubricant 3b of the lubricant application device 3 according to this embodiment, and FIG. 16 shows the transition of the solid lubricant amount and the near-end detection timing according to this embodiment. FIG.

本実施例の潤滑剤塗布装置3と、実施例1〜3の潤滑剤塗布装置とでは、本実施例の潤滑剤残量検知手段が複数段階に分けた固形潤滑剤3bの残量状態を検知することに係る点と、固形潤滑剤3bのエンド状態を検知する構成に係る点のみ異なる。したがって、上記実施例1〜3と同一又は同様な構成、及びその作用・効果については、適宜、省略して説明するとともに、特に、区別する必要が無い限り、同一又は同様な構成部材については、同一の符号を付して説明する。   In the lubricant application device 3 according to the present embodiment and the lubricant application devices according to the first to third embodiments, the remaining amount of the solid lubricant 3b detected by the lubricant remaining amount detecting unit according to the present embodiment is detected in a plurality of stages. It differs only in the point which concerns on doing, and the point which concerns on the structure which detects the end state of the solid lubricant 3b. Therefore, the same or similar configurations as in the first to third embodiments, and the operations and effects thereof will be appropriately omitted and described, and unless particularly distinguished, unless otherwise distinguished, The same reference numerals are used for explanation.

本実施例の潤滑剤残量検知手段は、複数段階に分けた固形潤滑剤3bの残量状態、具体的には2回の検知タイミングを有している。
1回目の検知(以下、第一検知という。)にて固形潤滑剤3bが残り僅かなニアエンド状態(ニア寿命状態)である第一の検知状態にあることを検知する。そして、第一検知で、検知した第一の検知状態にあることを通知するとともに、そのタイミングを制御部100に記憶する。
一方、2回目の検知(以下、第二検知という。)にて固形潤滑剤3bの残量がないエンド状態(寿命状態)である第二の検知状態にあることを検知する。そして、第二検知で、検知した第二の検知状態にあることを通知するとともに、そのタイミングを制御部100に記憶する。
The lubricant remaining amount detecting means of this embodiment has a remaining amount state of the solid lubricant 3b divided into a plurality of stages, specifically, two detection timings.
In the first detection (hereinafter referred to as first detection), it is detected that the solid lubricant 3b is in a first detection state that is a little near end state (near life state). The first detection notifies the detected first detection state, and stores the timing in the control unit 100.
On the other hand, the second detection (hereinafter referred to as second detection) detects that the solid lubricant 3b is in the second detection state that is the end state (life state) where there is no remaining amount. Then, in the second detection, it is notified that the second detection state is detected, and the timing is stored in the control unit 100.

また、潤滑剤残量検知手段は、感光体1への潤滑剤塗布動作中に残量検知を行う。
そして、残量検知中に、プリンタから潤滑剤塗布動作の開始要求があったら、制御部100に記憶したタイミングと、及び第二検知後の塗布ローラ3aの動作走行距離と、開始要求に応じた塗布ローラ3aの走行距離の設定値:Nと、に基づいて、次の判断を行う。
残量検知を中断し、開始要求に応じて潤滑剤塗布動作を開始するか、残量検知が完了するまで、開始要求に応じた潤滑剤塗布動作の開始を待機させるか、開始要求に応じた潤滑剤塗布動作の開始を禁止するか、の判断である。
The lubricant remaining amount detecting means detects the remaining amount during the operation of applying the lubricant to the photoreceptor 1.
And if there is a start request for the lubricant application operation from the printer during the remaining amount detection, the timing stored in the control unit 100, the operation travel distance of the application roller 3a after the second detection, and the start request are met. Based on the set value of the travel distance of the application roller 3a: N, the following determination is made.
Stop the remaining amount detection and start the lubricant application operation in response to the start request, or wait for the start of the lubricant application operation according to the start request until the remaining amount detection is completed, or respond to the start request This is a determination as to whether or not to start the lubricant application operation.

このように構成することで、次のような効果を奏することができる。
潤滑剤残量検知手段は、感光体1への潤滑剤塗布動作停止中に残量検知を行うので、塗布ローラ3aの回転を停止させ、固形潤滑剤3bが収納ケース3e内で振動していない状態で残量検知を行うことができる。このため、振動による固形潤滑剤3bの残量の誤検知の発生を抑制することが可能となる。
また、残量検知を中断し、開始要求に応じて潤滑剤塗布動作を開始するか、残量検知が完了するまで、開始要求に応じた潤滑剤塗布動作の開始を待機させるか、開始要求に応じた潤滑剤塗布動作の開始を禁止するか、を判断できる。
By configuring in this way, the following effects can be achieved.
The lubricant remaining amount detecting means detects the remaining amount while the operation of applying the lubricant to the photosensitive member 1 is stopped. Therefore, the rotation of the application roller 3a is stopped and the solid lubricant 3b is not vibrated in the storage case 3e. The remaining amount can be detected in the state. For this reason, it becomes possible to suppress generation | occurrence | production of the misdetection of the residual amount of the solid lubricant 3b by vibration.
Also, the remaining amount detection is interrupted and the lubricant application operation is started in response to the start request, or the start of the lubricant application operation according to the start request is waited until the remaining amount detection is completed, or the start request is It can be determined whether or not to start the corresponding lubricant application operation.

これにより、潤滑剤が枯渇するおそれがある場合のみ潤滑剤塗布動作の開始を待機させたり、固形潤滑剤3bの交換が必要な場合には潤滑剤塗布動作の開始を禁止したりすることができる。また、潤滑剤が枯渇するおそれがない場合は潤滑剤塗布動作の開始を割り込ませることもできる。したがって、固形潤滑剤の残量検知に起因して生じる、用いる装置のデッドタイムを低減することが可能となる。
また、潤滑剤塗布動作の開始を禁止する判断が行えることで、潤滑剤が枯渇した状態で潤滑剤の供給動作が行われて発生した、感光体1の異常摩耗などの不具合を解消するための作業が生じて、プリンタのデッドタイムが更に延びてしまうことも抑制できる。
よって、固形潤滑剤の残量の誤検知の発生を抑制できるとともに、用いる装置のデッドタイムを低減できる潤滑剤供給装置を提供できる。
Thus, it is possible to wait for the start of the lubricant application operation only when there is a risk of exhaustion of the lubricant, or to prohibit the start of the lubricant application operation when the solid lubricant 3b needs to be replaced. . Moreover, when there is no possibility that the lubricant is exhausted, the start of the lubricant application operation can be interrupted. Therefore, it is possible to reduce the dead time of the apparatus to be used, which is caused by detecting the remaining amount of the solid lubricant.
In addition, since it is possible to determine that the start of the lubricant application operation is prohibited, it is possible to eliminate problems such as abnormal wear of the photosensitive member 1 caused by the lubricant supply operation in a state where the lubricant is depleted. It is also possible to prevent the printer dead time from further extending due to work.
Therefore, it is possible to provide a lubricant supply device that can suppress the occurrence of erroneous detection of the remaining amount of the solid lubricant and reduce the dead time of the device to be used.

次に、本実施例の潤滑剤残量検知手段として用いることができる構成について説明する。
本実施例の潤滑剤残量検知手段は、2回の検知タイミングを有するため、例えば、潤滑剤残量検知手段内で複数点(第一接点部、第ニ接点部)を有する構成であっても良い。また、潤滑剤塗布装置3の複数箇所に潤滑剤残量検知手段の残量検知部材を配置して第1検知(ニア寿命)、第2検知(寿命)とした構成でも、本発明の効果は同様に得られる。
例えば、図3等に示した潤滑剤残量検知手段では、ニアエンド検知を行う電極部材41とは別に、エンド検知を行う電極部材を設けても良い。
また、図10等に示した潤滑剤残量検知手段140でも、ニアエンド検知を行う回転電極部材141と電極部材142aとは別に、エンド検知を行う回転電極部材と電極部材を設けても良い。
また、図12等に示した潤滑剤残量検知手段240でも、ニアエンド検知を行う回転部材241と回動検知部242とは別に、エンド検知を行う回転部材と回動検知部を設けても良い。
Next, a configuration that can be used as the lubricant remaining amount detecting means of this embodiment will be described.
Since the lubricant remaining amount detecting means of this embodiment has two detection timings, for example, the lubricant remaining amount detecting means has a plurality of points (first contact portion, second contact portion) in the lubricant remaining amount detecting means. Also good. Further, the effects of the present invention can be achieved even in a configuration in which the remaining amount detection members of the lubricant remaining amount detecting means are arranged at a plurality of locations of the lubricant application device 3 to perform the first detection (near life) and the second detection (life). It is obtained similarly.
For example, in the lubricant remaining amount detecting means shown in FIG. 3 and the like, an electrode member that performs end detection may be provided separately from the electrode member 41 that performs near-end detection.
Further, in the lubricant remaining amount detecting means 140 shown in FIG. 10 and the like, a rotating electrode member and an electrode member for performing end detection may be provided separately from the rotating electrode member 141 and the electrode member 142a for performing near-end detection.
Also in the lubricant remaining amount detecting means 240 shown in FIG. 12 and the like, a rotating member and a rotation detecting unit for performing end detection may be provided separately from the rotating member 241 and the rotation detecting unit 242 for performing near-end detection. .

ここで、本実施例の潤滑剤塗布装置3は、2回の検知タイミングを有する潤滑剤残量検知手段を備えた潤滑剤塗布装置に限定されるものではなく、複数段階に分けた残量状態を検知可能なものであれば良い。
そして、2回を超える複数段階に分けた残量状態を検知する構成では、複数段階に分けた残量状態を、次のようにしてニアエンド状態とエンド状態とに分ける判断を行う。
複数段階に分けた残量状態の内、最も早く検出した第一検出のタイミングを、固形潤滑剤の残量が残りわずかの状態であるニアエンド状態と判断し、最後に検出した第二検出のタイミングを、供給する潤滑剤が枯渇する直前の、固形潤滑剤のエンド状態と判断する。
これにより、固形潤滑剤3bの残量状態を、通常状態、ニアエンド状態、もしくはエンド状態のいずれであるか判断することができ、各残量状態に応じた潤滑剤塗布装置3の制御、及びこの潤滑剤供給装置を用いるプリンタの制御が可能となる。
よって、更なる、省電力化や、プリンタのデッドタイムの抑制効果を高めることが可能となる。
Here, the lubricant application device 3 of the present embodiment is not limited to the lubricant application device provided with the lubricant remaining amount detection means having two detection timings, but the remaining amount state divided into a plurality of stages. As long as it is possible to detect.
And in the structure which detects the remaining amount state divided into a plurality of stages exceeding two times, the determination is made to divide the remaining state divided into a plurality of stages into a near-end state and an end state as follows.
Of the remaining amount status divided into multiple stages, the first detection timing detected earliest is judged as the near end state where the remaining amount of solid lubricant is a little remaining, and the second detection timing detected last Is determined as the end state of the solid lubricant immediately before the supplied lubricant is exhausted.
Thereby, it is possible to determine whether the remaining state of the solid lubricant 3b is a normal state, a near-end state, or an end state. Control of the lubricant application device 3 according to each remaining amount state, and this Control of the printer using the lubricant supply device becomes possible.
Therefore, it is possible to further enhance the power saving and the effect of suppressing the printer dead time.

次に、本実施例の潤滑剤塗布装置3の固形潤滑剤3bの残量検知における制御フロー、及び固形潤滑剤3bの残量検知のより詳細なタイミングについて、図を用いて説明する。
図15は、本実施例に係る潤滑剤塗布装置3の固形潤滑剤3bの残量検知における制御フロー図である。
Next, the control flow in the remaining amount detection of the solid lubricant 3b of the lubricant application device 3 of this embodiment and the more detailed timing of the remaining amount detection of the solid lubricant 3b will be described with reference to the drawings.
FIG. 15 is a control flowchart for detecting the remaining amount of the solid lubricant 3b of the lubricant application device 3 according to this embodiment.

図15に示すように、制御部100は、潤滑剤塗布動作が終了したか否かを機械の停止要求があった否かをチェックしてから(S201)、固形潤滑剤3bの残量検知の判定実行を開始する(S202)。   As shown in FIG. 15, the control unit 100 checks whether the lubricant application operation has been completed or not (S201), and then detects the remaining amount of the solid lubricant 3b. Determination execution is started (S202).

このとき、図6の「(1)」に示すように、プリンタの制御部からの機械動作停止要求信号により機械動作停止が指示される。すると、図6の「(2)」に示すように、感光体1を回転駆動させる駆動モータや塗布ローラ3aを回転駆動させる駆動モータなどを停止(ON→OFF)し、プリンタ本体の動作が停止する。
なお、塗布ローラ3aを回転駆動する構成では、塗布ローラ3aを回転駆動する駆動モータがONからOFFに切り替わったことを検知することで、潤滑剤塗布動作が終了したことを検知することもできる。一方、塗布ローラ3aが、感光体1と連れ回りする構成では、例えば、感光体1を回転駆動させる駆動モータがONからOFFに切り替わったことを検知することで潤滑剤塗布動作が終了したことを検知することができる。また、これに限らず、エンコーダなどで塗布ローラ3aが停止したことを検知することで潤滑剤塗布動作が終了したことを検知しても良い。
At this time, as shown in “(1)” of FIG. 6, the machine operation stop is instructed by the machine operation stop request signal from the control unit of the printer. Then, as shown in “(2)” of FIG. 6, the drive motor for rotating the photosensitive member 1 and the drive motor for rotating the application roller 3a are stopped (ON → OFF), and the operation of the printer main body is stopped. To do.
In the configuration in which the application roller 3a is rotationally driven, it is also possible to detect the end of the lubricant application operation by detecting that the drive motor that rotationally drives the application roller 3a is switched from ON to OFF. On the other hand, in the configuration in which the application roller 3a rotates with the photoreceptor 1, for example, the fact that the lubricant application operation has been completed is detected by detecting that the drive motor that rotationally drives the photoreceptor 1 is switched from ON to OFF. Can be detected. Further, the present invention is not limited to this, and it may be detected that the lubricant application operation has been completed by detecting that the application roller 3a has stopped using an encoder or the like.

プリンタの本体動作が停止した後、図6の「(3)」に示すように、潤滑剤残量検知用のバイアス印加をOFF→ONとし、電極部材41と潤滑剤保持部材3dとの間にバイアスを印加した後、図6の「(4)」に示すように、潤滑剤残量検知の判断を実行する。
ここで、潤滑剤残量検知は、例えば、回転動作終了時から2秒後(Tx−Ta)に0.2秒間隔にて導通状態を10回、確認を行う。10回とも導通を確認した場合に、ニアエンドと判断するように制御する。潤滑剤残量検知の実行時間は、図10に示すように、(ΔL=Ty−Tx)である。
そして、潤滑剤残量検知の判断実行時間(ΔL=Ty−Tx)を経過したら、潤滑剤残量検知用のバイアス印加をON→OFFとし、画像形成装置本体の次動作の実行に備える。
After the operation of the main body of the printer is stopped, as shown in “(3)” of FIG. 6, the bias application for detecting the remaining amount of lubricant is changed from OFF to ON, and between the electrode member 41 and the lubricant holding member 3d. After the bias is applied, as shown in “(4)” of FIG.
Here, the remaining amount detection of the lubricant is performed, for example, by confirming the conduction state 10 times at 0.2 second intervals after 2 seconds (Tx-Ta) from the end of the rotation operation. Control is performed so as to determine near-end when continuity is confirmed 10 times. The execution time of the lubricant remaining amount detection is (ΔL = Ty−Tx) as shown in FIG.
Then, when the judgment execution time (ΔL = Ty−Tx) of the lubricant remaining amount detection elapses, the bias application for detecting the lubricant remaining amount is changed from ON to OFF to prepare for the next operation of the image forming apparatus main body.

本実施例では、機械動作停止時(Ta)から次動作開始時(Tb)までのΔNの間に、潤滑剤残量検知開始(Tx)から潤滑剤残量検知終了(Ty)の時間(ΔL)で導通検知により潤滑剤残量の判断を行う構成としている。このため、導通検知に必要なバイアス印加も潤滑剤残量検知の判断を行うタイミングにのみ実行する(図6図中ではT1〜T2までのΔMの時間バイアス印加を実行する)。このように、残量検知を実行するときのみ、電極部材41と潤滑剤保持部材3dとの間にバイアスを印加するので、省電力な構成とすることができる。また、プリンタ本体の動作実行中に潤滑剤残量検知用のバイアス印加を行わないため、潤滑剤残量検知用のバイアス印加のノイズによる他動作、他制御への影響を及ぼす懸念もなくなる。   In this embodiment, the time (ΔL) from the lubricant remaining amount detection start (Tx) to the lubricant remaining amount detection end (Ty) between ΔN from the machine operation stop (Ta) to the next operation start (Tb). ) To determine the remaining amount of lubricant by detecting conduction. For this reason, the bias application necessary for detecting the continuity is also executed only at the timing for determining the lubricant remaining amount detection (in FIG. 6, the time bias application of ΔM from T1 to T2 is executed). Thus, since a bias is applied between the electrode member 41 and the lubricant holding member 3d only when the remaining amount detection is performed, a power saving configuration can be achieved. Further, since the bias application for detecting the remaining amount of lubricant is not performed during the operation of the printer main body, there is no fear of affecting other operations and other controls due to noise applied to the bias for detecting the remaining amount of lubricant.

なお、詳しくは後述するが、プリンタ本体の制御部からの次動作の開始要求が、潤滑剤残量検知の判断の終了(Ty)前に指示された場合は、制御部100に記憶したタイミングと、第二検知後の塗布ローラ3aの動作走行距離と、開始要求に応じた塗布ローラ3aの走行距離の設定値:Nと、に基づいて、次の判断を行う。
残量検知を中断し、開始要求に応じて潤滑剤塗布動作を開始するか、残量検知が完了するまで、開始要求に応じた潤滑剤塗布動作の開始を待機させるか、開始要求に応じた潤滑剤塗布動作の開始を禁止するか、の判断である。
As will be described in detail later, if the start request for the next operation from the control unit of the printer main body is instructed before the end of the determination of the remaining lubricant amount detection (Ty), the timing stored in the control unit 100 is Then, the following determination is made based on the operation travel distance of the application roller 3a after the second detection and the set value: N of the travel distance of the application roller 3a according to the start request.
Stop the remaining amount detection and start the lubricant application operation in response to the start request, or wait for the start of the lubricant application operation according to the start request until the remaining amount detection is completed, or respond to the start request This is a determination as to whether or not to start the lubricant application operation.

ここで、本実施例の潤滑剤残量検知手段では、残量検知の判断実行期間(図6での、停止要求からTyの残量検知判断の完了までの期間)を有するため、判断実行中はデッドタイムとなっている。また、第二検知による第二の検知状態(エンド状態)では、機械動作を停止する構成であり、固形潤滑剤3b又は潤滑剤塗布装置3を交換するまで機械動作ができないデッドタイムとなってしまう。この期間はたとえ少量の通紙であっても実行することができない。これらのデッドタイムを低減するため、本発明では図15に示す制御フローに従った制御を行う構成としている。   Here, the lubricant remaining amount detecting means of the present embodiment has a remaining amount detection determination execution period (a period from the stop request to the completion of the Ty remaining amount detection determination in FIG. 6), and therefore the determination is being executed. Is dead time. Further, in the second detection state (end state) by the second detection, the machine operation is stopped, and a dead time in which the machine operation cannot be performed until the solid lubricant 3b or the lubricant application device 3 is replaced. . This period cannot be executed even if a small amount of paper is passed. In order to reduce these dead times, the present invention is configured to perform control according to the control flow shown in FIG.

本来、残量判断中は機械動作を禁止しているが、機械動作を優先し次回に残量判定を遅らせることが可能な場合がある。また、残量なしの寿命後であっても、連続や長時間の動作はできないが、短時間の動作は可能である。本実施例では、これらのタイミングで機械動作可能とする時間を設け、デッドタイムの低減を図っている。
次に、制御部100は、固形潤滑剤3bの残量検知の判定実行を開始した後(S202)、プリンタ本体の制御部からの次動作の要求が有ったか否かの判断を行う(S203)。
Originally, the machine operation is prohibited during the remaining amount determination, but it may be possible to delay the remaining amount determination next time by giving priority to the machine operation. Further, even after a life with no remaining amount, continuous or long-time operation is not possible, but short-time operation is possible. In this embodiment, a time for enabling machine operation at these timings is provided to reduce the dead time.
Next, after starting the determination execution of the remaining amount detection of the solid lubricant 3b (S202), the control unit 100 determines whether there has been a request for the next operation from the control unit of the printer main body (S203). ).

ここで、次動作の開始要求がない場合(S203のNO)、残量検知判断を所定回数(時間)だけ継続し判定を行う。これに対して、次動作の開始要求があった場合(S203のYES)、固形潤滑剤3bが第二検知状態(エンド状態)にあるかどうかと(S204)、第一検知状態(ニアエンド状態)にあるかどうかを確認し、次の「(1)」〜「(3)」の各状態(場合)で、次動作の開始の可否判断を行う。
(1)通常状態(ニア寿命前)
潤滑剤残量検知の判断実行を中断し(S209)、機械動作の開始要求にしたがい動作を開始する(S210)。
(2)ニアエンド状態(ニア寿命状態)
潤滑剤残量検知の判断実行を継続し判定を行う(S206)。(動作は判定後に行う)
Here, when there is no request for starting the next operation (NO in S203), the remaining amount detection determination is continued for a predetermined number of times (time). On the other hand, when there is a request for starting the next operation (YES in S203), whether the solid lubricant 3b is in the second detection state (end state) (S204), the first detection state (near end state). In the following states (cases) “(1)” to “(3)”, it is determined whether or not the next operation can be started.
(1) Normal state (before near life)
The determination execution of the lubricant remaining amount detection is interrupted (S209), and the operation is started according to the machine operation start request (S210).
(2) Near end state (near life state)
The determination is continued by continuing the determination execution of the lubricant remaining amount detection (S206). (Operation is performed after judgment)

(3)エンド状態(寿命状態)
まず、第二検知の状態になってからの塗布ローラ3aの動作走行距離が、設定した閾値:Th以下であるかどうか(S211)、次動作の開始要求に応じた塗布ローラ3aの走行距離が、設定値(N)以下であるかどうか(S212)、を確認する。
この状態では、どちらか一方でも超えていれば次動作の開始は禁止し、両方共に閾値:Th、及びは設定値:N以下であれば、次動作の開始を許容する。
なお、本実施例では、閾値:Th、設定値:Nが、いずれも走行距離としているが、印刷枚数、動作時間などでも、同様の効果が得られる。
そして、上記判定により、プリンタがデッドタイムとなる時間を極力低減する制御の構成としている。
(3) End state (life state)
First, whether the operation travel distance of the application roller 3a after the second detection state is equal to or less than the set threshold value Th (S211), the travel distance of the application roller 3a according to the start request for the next operation is determined. Whether the value is equal to or smaller than the set value (N) is checked (S212).
In this state, the start of the next operation is prohibited if either one is exceeded, and the start of the next operation is allowed if both of them are the threshold value Th and the set value N or less.
In this embodiment, the threshold value: Th and the set value: N are all travel distances, but the same effect can be obtained with the number of printed sheets, operation time, and the like.
And by the said determination, it is set as the structure of the control which reduces the time when a printer becomes dead time as much as possible.

ここから、再び、図15に示す制御フロー図に沿った説明に戻る。
次動作の要求が有ったか否かの判断で(S203)、プリンタ本体の制御部からの次動作の開始要求が無かった場合(S203のNO)、残量検知判断を所定回数(時間)だけ継続した後、固形潤滑剤3bの残量検知の判定が完了したか否かの判断を行う(S207)。この判断で、残量検知の判定が完了したと判断した場合(S207のYES)、残量検知の判定完了にともない制御部100に記憶している固形潤滑剤3bの残量状態の更新を行う(S208)。そして、固形潤滑剤3bの残量検知の判定を終了する。
一方、残量検知の判定が完了していないと判断した場合(S207のNO)、プリンタ本体の制御部からの次動作の開始要求が有ったか否かの判断に戻る(S203)。
From here, it returns to the description along the control flowchart shown in FIG.
When it is determined whether or not there is a request for the next operation (S203) and there is no request for starting the next operation from the control unit of the printer body (NO in S203), the remaining amount detection determination is performed a predetermined number of times (time). After continuing, it is determined whether or not the determination of the remaining amount detection of the solid lubricant 3b is completed (S207). If it is determined that the determination of the remaining amount is completed (YES in S207), the remaining state of the solid lubricant 3b stored in the control unit 100 is updated when the determination of the remaining amount is completed. (S208). Then, the determination of the remaining amount detection of the solid lubricant 3b is finished.
On the other hand, if it is determined that the remaining amount detection determination has not been completed (NO in S207), the process returns to determining whether or not there has been a request for starting the next operation from the control unit of the printer main body (S203).

また、残量検知の判断実行中、プリンタ本体の制御部からの次動作の開始要求が有ったか否かの判断で(S203)、次動作の開始要求が有ったと判断した場合(S203のYES)、固形潤滑剤3bが第二状態(エンド状態)にあるか否かの判断を行う(S204)。
この判断で、固形潤滑剤3bが第二状態にないと判断した場合(S204のNO)、固形潤滑剤3bが第一状態(ニアエンド状態)にあるか否かの判断を行う(S205)。
そして、固形潤滑剤3bが第一状態にあると判断した場合(S205のYES)、残量検知判断を所定回数(時間)だけ継続した後(S206)、固形潤滑剤3bの残量検知の判定が完了したか否かの判断を行う(S207)。
一方、固形潤滑剤3bが第一状態(ニアエンド状態)にないと判断した場合(S205のNO)、残量検知の判定を中断し(潤滑剤状態は更新せず)(S209)、次動作の開始要求に従い、次動作の開始を実行する(S210)。
Further, during the determination of the remaining amount detection, when it is determined whether there is a request for starting the next operation from the control unit of the printer body (S203), when it is determined that there is a request for starting the next operation (S203). YES), it is determined whether or not the solid lubricant 3b is in the second state (end state) (S204).
If it is determined that the solid lubricant 3b is not in the second state (NO in S204), it is determined whether or not the solid lubricant 3b is in the first state (near-end state) (S205).
If it is determined that the solid lubricant 3b is in the first state (YES in S205), the remaining amount detection determination is continued a predetermined number of times (time) (S206), and then the remaining amount detection determination of the solid lubricant 3b is performed. It is determined whether or not has been completed (S207).
On the other hand, if it is determined that the solid lubricant 3b is not in the first state (near-end state) (NO in S205), the determination of the remaining amount is interrupted (the lubricant state is not updated) (S209), and the next operation is started. In accordance with the start request, the next operation is started (S210).

固形潤滑剤3bが第二状態(エンド状態)にあるか否かの判断で(S204)、固形潤滑剤3bが第二状態(エンド状態)にあると判断した場合(S204のYES)、第二検知後の塗布ローラ3aの移動走行距離が、閾値(Th)以下であるか否かを判断する(S212)。
この判断で、第二検知後の塗布ローラ3aの移動走行距離が、閾値(Th)以下であると判断した場合には(S212のYES)、次動作の開始要求に応じた塗布ローラ3aの走行距離が、設定値(N)以下であるか否かの判断を行う(S212)。そして、次動作の開始要求に応じた塗布ローラ3aの走行距離が、設定値(N)以下であると判断した場合(S212のYES)、残量検知の判定を中断し(S209)、次動作の開始要求に従い、次動作の開始を実行する(S210)。
If it is determined whether the solid lubricant 3b is in the second state (end state) (S204) and it is determined that the solid lubricant 3b is in the second state (end state) (YES in S204), the second It is determined whether or not the moving travel distance of the application roller 3a after detection is equal to or less than a threshold value (Th) (S212).
If it is determined that the travel distance of the application roller 3a after the second detection is equal to or less than the threshold value (Th) (YES in S212), the application roller 3a travels in response to a request for starting the next operation. It is determined whether the distance is equal to or less than the set value (N) (S212). If it is determined that the travel distance of the application roller 3a in response to the start request for the next operation is equal to or less than the set value (N) (YES in S212), the determination of the remaining amount is interrupted (S209), and the next operation is performed. In response to the start request, the next operation is started (S210).

一方、第二検知後の塗布ローラ3aの移動走行距離が、閾値(Th)を超えると判断した場合(S212のNO)、エンド状態(寿命状態)と判断して、次動作の開始を禁止する(S213)。そして、固形潤滑剤3bの残量検知の判定を終了する。
また、第二検知後の塗布ローラ3aの移動走行距離が、閾値(Th)以下であるか否かの判断で(S212)、第二検知後の塗布ローラ3aの移動走行距離が、閾値(Th)を超えると判断した場合(S212のNO)、次動作の開始を禁止する(S213)。そして、固形潤滑剤3bの残量検知の判定を終了する。
On the other hand, when it is determined that the moving travel distance of the application roller 3a after the second detection exceeds the threshold (Th) (NO in S212), it is determined as an end state (life state) and the start of the next operation is prohibited. (S213). Then, the determination of the remaining amount detection of the solid lubricant 3b is finished.
Further, when the travel distance of the application roller 3a after the second detection is equal to or less than the threshold value (Th) (S212), the travel distance of the application roller 3a after the second detection is equal to the threshold value (Th). ) Is exceeded (NO in S212), the start of the next operation is prohibited (S213). Then, the determination of the remaining amount detection of the solid lubricant 3b is finished.

次に、潤滑剤残量検知手段として、電極部材41や潤滑剤保持部材3d等との導通状態の判断と塗布ローラ3aの走行距離(累積走行距離)の計数判断を併用した構成について説明する。
図16は、本実施例に係る固形潤滑剤量の推移とニアエンド検知のタイミングとを示す図である。
図16に示す固形潤滑剤の高さ:A0は、固形潤滑剤3bの使用初期の高さである。そして、潤滑剤塗布動作にともない、ある一定の高さ:A1以下になった場合、導通により求める固形潤滑剤3bの残量が第1の検知状態であるニアエンド状態(ニア寿命の状態)であると通知する構成である。しかし、ある一定の高さ:A1以下になるまでは、固形潤滑剤3bの残量を推測することができなくなる。
このような状態を防止するため、導通検知と併用して、塗布ローラ3aの走行距離を計数することで、ある程度の目安を算出することができるようになり、また、より誤検知の発生を防ぐことができる。
Next, a description will be given of a configuration in which the determination of the conduction state with the electrode member 41, the lubricant holding member 3d, and the like and the counting determination of the travel distance (cumulative travel distance) of the application roller 3a are used as the lubricant remaining amount detection means.
FIG. 16 is a diagram showing the transition of the amount of solid lubricant and the timing of near-end detection according to the present embodiment.
The height of the solid lubricant A0 shown in FIG. 16 is the initial height of the solid lubricant 3b. When the lubricant application operation results in a certain height: A1 or less, the remaining amount of the solid lubricant 3b obtained by conduction is in the near-end state (the state of near-life) in the first detection state. Is notified. However, the remaining amount of the solid lubricant 3b cannot be estimated until a certain height: A1 or less.
In order to prevent such a situation, it is possible to calculate a certain amount of reference by counting the travel distance of the application roller 3a in combination with the conduction detection, and further prevent the occurrence of erroneous detection. be able to.

そして、塗布ローラ3aの走行距離の閾値:B1を設定し、計数値がこの閾値以上になった場合、固形潤滑剤3bの残量が残りわずかであるニアエンド状態(ニア寿命の状態)として通知する。ニアエンド状態を検知した後は走行距離等の閾値:Btを設定し、ある一定期間動作を行った後、エンド状態(寿命)として機械動作を禁止する。
ここで、塗布ローラ3aの走行距離以外にも、塗布ローラ3aの回転時間等を計数することで、同様の効果を得ることが考えられる。しかし、環境変動等により塗布ローラ3aの回転数を変化させる制御を搭載した場合、走行距離を計数することが、より精度よく寿命を予測できる構成となる。
Then, when the threshold value B1 of the travel distance of the application roller 3a is set and the count value is equal to or greater than this threshold value, a notification is given as a near-end state (near life state) in which the remaining amount of the solid lubricant 3b is small. . After detecting the near-end state, a threshold such as a travel distance: Bt is set, and after a certain period of operation, the machine operation is prohibited as an end state (life).
Here, it is conceivable to obtain the same effect by counting the rotation time of the application roller 3a in addition to the travel distance of the application roller 3a. However, when a control for changing the number of rotations of the application roller 3a due to environmental changes or the like is installed, counting the travel distance is a configuration that can predict the life more accurately.

ここで、走行距離等の閾値:Btは、固形潤滑剤3bの残量の高さにおけるA1〜A2間の走行距離と略同等となる値にて設定している。ここで、A2は、使用条件の変動を許容するための値であり、例えば、A1〜At間の3等分に相当するものである。そして、A1〜A2間の走行距離とは、図16図中、固形潤滑剤の高さ:A0から、走行距離の閾値:B1と固形潤滑剤の高さ:A1との交点を通る直線(1点鎖線)を引き、この直線と固形潤滑剤の高さ:A1との交点から、この直線と固形潤滑剤の高さ:A2の直線(1点鎖線)とが交わる点までの走行距離である。
また、B1以降において、残量なしに対応する固形潤滑剤3bの残量の高さ:Atによる残量検出を行った場合は、ニアエンド状態(ニア寿命)後の走行距離閾値:Btを待たずにエンドとして機械動作を禁止する。
Here, the threshold value Bt such as the travel distance is set to a value that is substantially equal to the travel distance between A1 and A2 at the height of the remaining amount of the solid lubricant 3b. Here, A2 is a value for allowing variation in use conditions, and corresponds to, for example, three equal parts between A1 and At. The travel distance between A1 and A2 in FIG. 16 is a straight line passing through the intersection of the solid lubricant height A0 to the travel distance threshold B1 and the solid lubricant height A1 (1). This is the travel distance from the intersection of this straight line and the solid lubricant height: A1 to the point where this straight line and the solid lubricant height: A2 straight line (one-dot chain line) intersect. .
In addition, when the remaining amount of the solid lubricant 3b corresponding to no remaining amount is detected by At after B1, the running distance threshold after the near end state (near life): Bt is not waited. The machine operation is prohibited as an end.

以上、本実施形態について、図面を参照しながら説明してきたが、具体的な構成は、上述した本実施形態の潤滑剤塗布装置3を備えた構成に限られるものではなく、要旨を逸脱しない範囲の設計の変更等を行っても良い。
例えば、上述した本実施形態では、感光体1の表面に潤滑剤を塗布して供給する潤滑剤塗布装置3について説明したが、本実施形態の潤滑剤塗布装置の構成を、中間転写ベルト56に潤滑剤を塗布する潤滑剤塗布装置に適用することも可能である。
As described above, the present embodiment has been described with reference to the drawings. However, the specific configuration is not limited to the configuration including the lubricant application device 3 of the present embodiment described above, and does not depart from the gist. The design may be changed.
For example, in the above-described embodiment, the lubricant application device 3 that applies and supplies the lubricant to the surface of the photoreceptor 1 has been described. However, the configuration of the lubricant application device of the present embodiment is applied to the intermediate transfer belt 56. The present invention can also be applied to a lubricant application device that applies a lubricant.

また、本実施形態のプリンタに備えた作像ユニットを構成するプロセスカートリッジは、上述した各実施例のいずれかの潤滑剤塗布装置3を有している。
これにより、本実施形態のプロセスカートリッジは、上述した各実施例のいずれかの潤滑剤塗布装置3と同様な効果を奏することができる。
また、本実施形態のプリンタは、上述した各実施例のいずれかの潤滑剤塗布装置3を備えている。
これにより、本実施形態のプリンタは、上述した各実施例のいずれかの潤滑剤塗布装置3と同様な効果を奏することができる。
Further, the process cartridge constituting the image forming unit provided in the printer of this embodiment has the lubricant application device 3 of any of the above-described examples.
Thereby, the process cartridge of this embodiment can have the same effect as the lubricant application device 3 of any of the above-described examples.
Further, the printer of this embodiment includes the lubricant application device 3 according to any of the above-described examples.
Thereby, the printer of this embodiment can have the same effect as the lubricant application device 3 of any of the above-described examples.

以上に説明したものは一例であり、次の態様毎に特有の効果を奏する。
(態様A)
固形潤滑剤3bなどの固形潤滑剤と、該固形潤滑剤の潤滑剤を感光体1などの供給対象に塗布するなどして供給する塗布ローラ3aなどの供給部材と、前記固形潤滑剤の残量を検知する潤滑剤残量検知手段40などの残量検知手段とを備えた潤滑剤塗布装置3などの潤滑剤供給装置において、前記残量検知手段は、前記供給対象への潤滑剤塗布動作停止中などの供給動作停止中に残量検知を行い、前記残量検知を開始してから完了するまでの間に、プリンタなどの当該潤滑剤供給装置を用いる装置からの潤滑剤塗布動作などの次動作の開始要求があった場合、固形潤滑剤3bの残量がほぼゼロになる塗布ローラ3aの定めた走行距離基準に対する、塗布ローラ3aの累積走行距離の比である使用率などの前記固形潤滑剤の残量の変化に相関を持つ値を計数する制御部100などの手段により計数した値が、80[%]などの予め定めた閾値未満であった場合に、前記残量検知を中断し、前記開始要求に応じて前記次動作を開始し、予め定めた閾値以上であった場合に、前記残量検知が完了するまで、前記開始要求に応じた前記次動作の開始を待機させることを特徴とする。
What was demonstrated above is an example, and there exists an effect peculiar for every following aspect.
(Aspect A)
A solid lubricant such as the solid lubricant 3b, a supply member such as an application roller 3a that supplies the solid lubricant by applying the lubricant to a supply target such as the photoreceptor 1, and the remaining amount of the solid lubricant In the lubricant supply device such as the lubricant application device 3 provided with the remaining amount detection means such as the remaining amount detection means 40 for detecting the remaining amount of the lubricant, the remaining amount detection means stops the lubricant application operation to the supply target. The remaining amount is detected while the supply operation is stopped, for example, and after the start of the remaining amount detection until the completion, the next operation such as a lubricant application operation from a device using the lubricant supply device such as a printer is performed. When there is a request to start the operation, the solid lubrication such as the usage rate, which is the ratio of the cumulative travel distance of the application roller 3a to the travel distance reference determined by the application roller 3a where the remaining amount of the solid lubricant 3b is almost zero. Correlate with changes in remaining amount of agent When the value counted by the means such as the control unit 100 for counting one value is less than a predetermined threshold value such as 80 [%], the remaining amount detection is interrupted, and the next request is made in response to the start request. The operation is started, and when it is equal to or greater than a predetermined threshold, the start of the next operation according to the start request is waited until the remaining amount detection is completed.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
残量検知手段は、供給対象への供給動作停止中に残量検知を行うので、供給部材の回転を停止させ、固形潤滑剤が収納ケース3eなどの収納領域内で振動していない状態で残量検知を行うことができ、振動による誤検知の発生を抑制することが可能となる。
また、固形潤滑剤の残量の変化に相関を持つ値を計数する手段により計数した値に応じて、残量検知を中断し、開始要求に応じて次動作を開始するか、残量検知が完了するまで、開始要求に応じた次動作の開始を待機させるか判断できる。このため、潤滑剤の供給動作中に、潤滑剤が枯渇するおそれがある場合のみ残量検知を優先させ、潤滑剤が枯渇するおそれがない場合には、用いる装置の画像形成動作の割り込みにともなう潤滑剤塗布動作などの次動作を開始することができる。したがって、固形潤滑剤の残量検知に起因して生じる、用いる装置のデッドタイムを低減することが可能となる。
よって、固形潤滑剤の残量の誤検知の発生を抑制できるとともに、用いる装置のデッドタイムを低減できる潤滑剤供給装置を提供できる。
According to this, as described in the present embodiment, the following effects can be achieved.
Since the remaining amount detection means detects the remaining amount while the supply operation to the supply target is stopped, the rotation of the supply member is stopped, and the solid lubricant remains in a state where it does not vibrate in the storage region such as the storage case 3e. Quantity detection can be performed, and it becomes possible to suppress the occurrence of erroneous detection due to vibration.
Further, the remaining amount detection is interrupted according to the value counted by the means for counting the value correlated with the change in the remaining amount of the solid lubricant, and the next operation is started in response to the start request, or the remaining amount detection is performed. It can be determined whether or not to wait for the start of the next operation according to the start request until completion. For this reason, during the lubricant supply operation, priority is given to the remaining amount detection only when there is a possibility that the lubricant will be exhausted, and when there is no possibility that the lubricant will be exhausted, this is accompanied by an interruption in the image forming operation of the apparatus to be used. The next operation such as a lubricant application operation can be started. Therefore, it is possible to reduce the dead time of the apparatus to be used, which is caused by detecting the remaining amount of the solid lubricant.
Therefore, it is possible to provide a lubricant supply device that can suppress the occurrence of erroneous detection of the remaining amount of the solid lubricant and reduce the dead time of the device to be used.

(態様B)
固形潤滑剤3bなどの固形潤滑剤と、該固形潤滑剤の潤滑剤を感光体1などの供給対象に塗布するなどして供給する塗布ローラ3aなどの供給部材と、前記固形潤滑剤の残量を検知する潤滑剤残量検知手段40などの残量検知手段とを備えた潤滑剤塗布装置3などの潤滑剤供給装置において、前記残量検知手段は、第一の検知状態(ニアエンド状態)や第二の検知状態(エンド状態)などの複数段階に分けた残量状態の検知が可能であり、前記供給対象への潤滑剤塗布動作停止中などの供給動作停止中に残量検知を行い、前記残量検知を開始してから完了するまでの間に、プリンタなどの当該潤滑剤供給装置を用いる装置からの潤滑剤塗布動作などの次動作の開始要求があった場合、第一の検知状態や第二の検知状態を検知したタイミング、及び第二検知後の塗布ローラ3aの動作走行距離などの前記残量検知手段で検知した残量状態に係る情報と、開始要求に応じた塗布ローラ3aの走行距離の設定値:Nなどの前記開始要求に応じた潤滑剤の供給量の目安となる値とに基づいて、前記残量検知を中断し、前記開始要求に応じて前記次動作を開始するか、前記残量検知が完了するまで、前記開始要求に応じた前記次動作の開始を待機させるか、前記開始要求に応じた前記次動作の開始を禁止するか、を判断することを特徴とする。
(Aspect B)
A solid lubricant such as the solid lubricant 3b, a supply member such as an application roller 3a that supplies the solid lubricant by applying the lubricant to a supply target such as the photoreceptor 1, and the remaining amount of the solid lubricant In the lubricant supply device such as the lubricant applicator 3 provided with the remaining amount detecting means such as the remaining amount detecting means 40 for detecting the remaining amount, the remaining amount detecting means includes a first detection state (near-end state), It is possible to detect the remaining amount state divided into a plurality of stages such as the second detection state (end state), and perform the remaining amount detection during the supply operation stop such as the lubricant application operation stop to the supply target, When there is a request for starting a next operation such as a lubricant application operation from a device using the lubricant supply device such as a printer between the start and the completion of the remaining amount detection, the first detection state And the timing when the second detection state is detected, And information relating to the remaining amount state detected by the remaining amount detecting means such as the operation traveling distance of the application roller 3a after the second detection, and the setting value of the traveling distance of the application roller 3a according to the start request: N and the like The remaining amount detection is interrupted based on the reference value of the lubricant supply amount according to the start request, and the next operation is started according to the start request, or until the remaining amount detection is completed. , Determining whether to wait for the start of the next operation in response to the start request or to prohibit the start of the next operation in response to the start request.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
残量検知手段は、供給対象への供給動作停止中に残量検知を行うので、供給部材の回転を停止させ、固形潤滑剤が収納ケース3eなどの収納領域内で振動していない状態で残量検知を行うことができ、振動による誤検知の発生を抑制することが可能となる。
また、残量検知を中断し、開始要求に応じて次動作を開始するか、残量検知が完了するまで、開始要求に応じた次動作の開始を待機させるか、開始要求に応じた次動作の開始を禁止するか、を判断できる。
According to this, as described in the present embodiment, the following effects can be achieved.
Since the remaining amount detection means detects the remaining amount while the supply operation to the supply target is stopped, the rotation of the supply member is stopped, and the solid lubricant remains in a state where it does not vibrate in the storage region such as the storage case 3e. Quantity detection can be performed, and it becomes possible to suppress the occurrence of erroneous detection due to vibration.
Also, the remaining amount detection is interrupted and the next operation is started in response to the start request, the next operation in response to the start request is waited until the remaining amount detection is completed, or the next operation in response to the start request It is possible to determine whether to prohibit the start of

これにより、潤滑剤が枯渇するおそれがある場合のみ開始要求に応じた次動作の開始を待機させたり、固形潤滑剤の交換が必要な場合には次動作の開始を禁止したりするとともに、潤滑剤が枯渇するおそれがない場合は次動作の開始を割り込ませることができる。したがって、固形潤滑剤の残量検知に起因して生じる、用いる装置のデッドタイムを低減することが可能となる。
また、次動作の開始を禁止する判断が行えることで、潤滑剤が枯渇した状態で潤滑剤の供給動作が行われて発生した、感光体の異常摩耗などの不具合を解消するための作業が生じて、用いる装置のデッドタイムが更に延びてしまうことも抑制できる。
よって、固形潤滑剤の残量の誤検知の発生を抑制できるとともに、用いる装置のデッドタイムを低減できる潤滑剤供給装置を提供できる。
This makes it possible to wait for the start of the next operation in response to the start request only when there is a risk of exhaustion of the lubricant, or to prohibit the start of the next operation when the solid lubricant needs to be replaced. If there is no risk of the agent being depleted, the start of the next operation can be interrupted. Therefore, it is possible to reduce the dead time of the apparatus to be used, which is caused by detecting the remaining amount of the solid lubricant.
In addition, the decision to prohibit the start of the next operation can be made, so that work for solving problems such as abnormal wear of the photoconductor that occurs when the lubricant supply operation is performed when the lubricant is depleted occurs. Thus, the dead time of the device to be used can be further suppressed.
Therefore, it is possible to provide a lubricant supply device that can suppress the occurrence of erroneous detection of the remaining amount of the solid lubricant and reduce the dead time of the device to be used.

(態様C)
(態様B)において、第一の検出状態や第二の検出状態などの前記複数段階に分けた残量状態の内、第一検出のタイミングなどの最も早く検出した第一の検出タイミングを、固形潤滑剤の残量が残りわずかの状態であるニアエンド状態と判断し、第二検出のタイミングなどの最後に検出したタイミングを、供給する潤滑剤が枯渇する直前の、前記固形潤滑剤のエンド状態と判断することを特徴とする。
(Aspect C)
In (Aspect B), the first detection timing detected earliest such as the timing of the first detection among the remaining amount states divided into the plurality of stages such as the first detection state and the second detection state is solid. It is determined that the remaining amount of lubricant is in a near-end state where the remaining amount of the lubricant is small, and the last detected timing such as the timing of the second detection is the end state of the solid lubricant immediately before the supplied lubricant is depleted. It is characterized by judging.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
固形潤滑剤の残量状態を、通常状態、ニアエンド状態、もしくはエンド状態のいずれであるか判断することができ、各残量状態に応じた潤滑剤供給装置の制御、及びこの潤滑剤供給装置を用いる装置の制御が可能となる。
よって、更なる、省電力化や、用いる装置のデッドタイムの抑制効果を高めることが可能となる。
According to this, as described in the present embodiment, the following effects can be achieved.
It is possible to determine whether the remaining amount of the solid lubricant is a normal state, a near-end state, or an end state. Control of the lubricant supply device according to each remaining amount state, and this lubricant supply device It is possible to control the apparatus to be used.
Therefore, it becomes possible to further improve the power saving and the effect of suppressing the dead time of the device to be used.

(態様D)
(態様A)乃至(態様C)のいずれかにおいて、前記残量検知手段は、前記固形潤滑剤の残量に応じて、接触して導電する導電状態と、離間して非導通状態とに切り替わる、電極部材41や潤滑剤保持部材3dなどの少なくとも2つの導電性部材を有した導通検知部を備えており、前記導通検知部の導通状態から、前記固形潤滑剤の残量を検知することを特徴とする。
(Aspect D)
In any one of (Aspect A) to (Aspect C), the remaining amount detecting means switches between a conductive state that contacts and conducts and a separated state that does not conduct according to the remaining amount of the solid lubricant. A conduction detecting unit having at least two conductive members such as the electrode member 41 and the lubricant holding member 3d, and detecting the remaining amount of the solid lubricant from the conduction state of the conduction detecting unit. Features.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
導通検知部の導通状態により固形潤滑剤の残量を検知することで、センサ等を潤滑剤供給装置の近傍に配置する必要がなく、省スペースで潤滑剤残量検知を行うことができる。
また、潤滑剤の供給動作時には、検知動作を行わないため、固形潤滑剤の振動等による断続的な接触での導通による誤検知も防止できるとともに、検知動作を行わない通常時は常に導通しない状態とすることができ、消費電力を低減できる。
According to this, as described in the present embodiment, the following effects can be achieved.
By detecting the remaining amount of the solid lubricant based on the conduction state of the conduction detecting unit, it is not necessary to arrange a sensor or the like in the vicinity of the lubricant supply device, and the remaining amount of lubricant can be detected in a small space.
In addition, since the detection operation is not performed during the lubricant supply operation, it is possible to prevent erroneous detection due to conduction due to intermittent contact due to vibration of the solid lubricant, etc. Power consumption can be reduced.

(態様E)
(態様D)において、前記導通検知部は、前記固形潤滑剤の長手方向の複数個所に設けられていることを特徴とする。
これによれば、本実施形態で説明したように、次のような効果を奏することができる。
固形潤滑剤の長手方向両端近傍などの複数箇所での導通を確認することで、固形潤滑剤の偏った消費状態においても、固形潤滑剤の残量を正常に検知することが可能となる。
(Aspect E)
In (Aspect D), the conduction detectors are provided at a plurality of locations in the longitudinal direction of the solid lubricant.
According to this, as described in the present embodiment, the following effects can be achieved.
By confirming conduction at a plurality of locations such as in the vicinity of both ends in the longitudinal direction of the solid lubricant, the remaining amount of the solid lubricant can be normally detected even when the solid lubricant is unevenly consumed.

(態様F)
(態様E)において、前記導通検知部は、前記固形潤滑剤の長手方向の少なくとも両端部近傍に設けられていることを特徴とする。
これによれば、本実施形態で説明したように、次のような効果を奏することができる。
少なくとも固形潤滑剤の両端部2箇所での導通の確認を行うことで、固形潤滑剤の偏った消費状態においても、潤滑剤残量を正常に検知することが可能となる。
(Aspect F)
In (Embodiment E), the conduction detection unit is provided in the vicinity of at least both ends in the longitudinal direction of the solid lubricant.
According to this, as described in the present embodiment, the following effects can be achieved.
By confirming conduction at least at two locations on both ends of the solid lubricant, it is possible to normally detect the remaining amount of the lubricant even in the uneven consumption state of the solid lubricant.

(態様G)
(態様D)乃至(態様F)のいずれかにおいて、前記残量検知手段は、前記導通検知部の導通状態に基づいて、前記固形潤滑剤の残量が残りわずかの状態であるニアエンド状態を判断することを特徴とする。
これによれば、本実施形態で説明したように、次のような効果を奏することができる。
導通状態から、固形潤滑剤のニアエンド状態を判断することで、固形潤滑剤がエンド状態となる前にニアエンド状態にあることを利用者に通知することができる。このように通知することで、利用者は、用いる装置の機械動作を行う予定が無い時に、固形潤滑剤の交換を行うことができ、固形潤滑剤の交換作業にともなう、用いる装置の実質的なダウンタイムを無くことが可能となる。
(Aspect G)
In any one of (Aspect D) to (Aspect F), the remaining amount detecting means determines a near-end state in which the remaining amount of the solid lubricant is a slight remaining state based on a conduction state of the conduction detection unit. It is characterized by doing.
According to this, as described in the present embodiment, the following effects can be achieved.
By determining the near-end state of the solid lubricant from the conduction state, it is possible to notify the user that the solid lubricant is in the near-end state before becoming the end state. By notifying in this way, the user can replace the solid lubricant when there is no plan to perform the machine operation of the apparatus to be used, and the substantial amount of the apparatus to be used accompanying the replacement work of the solid lubricant can be changed. It is possible to eliminate downtime.

(態様H)
(態様D)乃至(態様G)のいずれかにおいて、前記固形潤滑剤の残量を検知するときのみ、前記導通検知部への通電動作を行うことを特徴とする。
(Aspect H)
In any one of (Aspect D) to (Aspect G), the energization operation to the conduction detection unit is performed only when the remaining amount of the solid lubricant is detected.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
固形潤滑剤の残量検知を通電による導通検知で行う従来の構成では、そのバイアス印加による分の電力量が多くなる。
一方、本(態様H)では、固形潤滑剤の残量を検知するときのみ、導通検知部への通電動作を行うことで、供給部材の停止時、像担持体の停止時、画像形成装置などの用いる装置本体の停止時にのみ固形潤滑剤の残量の判断を実行する。このため、固形潤滑剤の残量検知を行うときを除き、バイアス印加が不要となるため、電力量の総量を減らす効果がある。
また、画像形成装置などの用いる装置の画像形成動作などの機械動作時に、固形潤滑剤の残量検知用のバイアス印加動作を行わない構成とすることで、バイアス印加時のノイズによる用いる装置の機械動作への影響の懸念がなくなる。
According to this, as described in the present embodiment, the following effects can be achieved.
In the conventional configuration in which the remaining amount of the solid lubricant is detected by detecting conduction by energization, the amount of electric power corresponding to the bias application increases.
On the other hand, in the present embodiment (Aspect H), only when the remaining amount of the solid lubricant is detected, the energization operation to the conduction detecting unit is performed, so that the supply member is stopped, the image carrier is stopped, the image forming apparatus, etc. Judgment of the remaining amount of the solid lubricant is executed only when the main body of the apparatus is stopped. This eliminates the need to apply a bias except when the remaining amount of solid lubricant is detected, thus reducing the total amount of power.
Further, the machine of the apparatus used due to noise at the time of bias application is configured such that the bias application operation for detecting the remaining amount of the solid lubricant is not performed during the machine operation such as the image forming operation of the apparatus used such as the image forming apparatus. No worries about impact on operation.

(態様I)
(態様D)乃至(態様H)のいずれかにおいて、前記残量検知手段は、次の(i)〜(v)の順で、前記固形潤滑剤の残量を検知する残量検知に係る動作を行うことを特徴とする。
(i)供給部材の動作停止
(ii)導通検知部への通電開始
(iii)潤滑剤残量判断の実行開始
(iv)潤滑剤残量判断の実行終了
(v)導通検知部への通電停止
(Aspect I)
In any one of (Aspect D) to (Aspect H), the remaining amount detecting means performs an operation related to the remaining amount detection that detects the remaining amount of the solid lubricant in the following order (i) to (v): It is characterized by performing.
(i) Stopping operation of supply members
(ii) Starting energization to the continuity detector
(iii) Start of determination of lubricant remaining amount
(iv) End of execution of lubricant remaining amount judgment
(v) Stopping energization to the continuity detector

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
通電動作を固形潤滑剤の残量検知(判断)を行うタイミングでのみ実行する構成とし、かつ、塗布ローラなどの供給部材の動作停止から、次回動作開始までの間に通電動作を開始して停止する構成にできる。
よって、画像形成装置などの用いる装置の省電力化や、固形潤滑剤の残量検知の誤検知の抑制効果を確実に発揮することができる。
According to this, as described in the present embodiment, the following effects can be achieved.
The energizing operation is executed only at the timing of detecting (judging) the remaining amount of solid lubricant, and the energizing operation is started and stopped between the stop of the operation of the supply member such as the application roller and the next operation start. Can be configured.
Therefore, it is possible to reliably exhibit the power saving of the apparatus used such as the image forming apparatus and the suppression effect of the erroneous detection of the remaining amount detection of the solid lubricant.

(態様J)
(態様D)乃至(態様I)のいずれかにおいて、前記残量検知手段は、前記導通検知部の導通状態と、前記固形潤滑剤の残量の目安となる前記供給部材の累積走行距離などの累積使用量とに基づいて、前記固形潤滑剤の残量状態を検知することを特徴とする。
(Aspect J)
In any one of (Aspect D) to (Aspect I), the remaining amount detection unit includes a conduction state of the conduction detection unit, a cumulative travel distance of the supply member that is a measure of the remaining amount of the solid lubricant, and the like. The remaining amount state of the solid lubricant is detected based on the accumulated usage amount.

これによれば、本実施形態で説明したように、次のような効果を奏することができる。
残量検知手段は、導通検知部の導通状態と、固形潤滑剤の残量の目安となる供給部材の累積使用量とに基づいて、固形潤滑剤の残量状態を検知するため、残量検知手段の誤検知を確実に防止することが可能となる。
例えば、潤滑剤消費量が少ない使用条件のユーザーなどの利用者においては、像担持体上で必要となる潤滑剤が少なくなる。このため、供給部材により粉体状にされた潤滑剤が固形潤滑剤の収納部に堆積することで導通検知を行う導通検知部の導電性部材に付着してしまい、導通検知を正常に行えない可能性がある。
一方、供給部材の累積使用量を計数し、ある一定以上となった場合には潤滑剤残量が残り僅かになったと判断する構成を導通検知とともに併用した二系統の残量検知手段とすることで、より誤検知による不具合等の防止効果を高めることができる。
According to this, as described in the present embodiment, the following effects can be achieved.
The remaining amount detection means detects the remaining amount of the solid lubricant based on the conduction state of the continuity detection unit and the cumulative usage of the supply member that is a measure of the remaining amount of the solid lubricant. It is possible to reliably prevent erroneous detection of means.
For example, a user such as a user under a use condition with a small amount of lubricant consumption requires less lubricant on the image carrier. For this reason, the lubricant made into powder by the supply member is deposited on the solid lubricant storage part and adheres to the conductive member of the continuity detection unit that detects continuity, and the continuity detection cannot be performed normally. there is a possibility.
On the other hand, when the cumulative usage of the supply member is counted, and it becomes more than a certain level, the remaining amount of the lubricant is judged to be small. Thus, it is possible to further enhance the effect of preventing problems due to erroneous detection.

(態様K)
(態様J)において、前記供給部材の累積使用量として、前記供給部材の累積走行距離を用いることを特徴とする。
これによれば、本実施形態で説明したように、次のような効果を奏することができる。
供給部材の累積使用量として、回転時間等を計数することも可能であるが、環境変動等による潤滑剤塗布量のばらつきを考慮するため、供給部材の回転数を変化させる制御も存在する。このような場合、累積使用時間では回転数の切り替え分を考慮できないため、供給部材の累積走行距離を用いて判断することで、より正確に固形潤滑剤の残量を検知することが可能となる。
(Aspect K)
In (Aspect J), the cumulative travel distance of the supply member is used as the cumulative usage amount of the supply member.
According to this, as described in the present embodiment, the following effects can be achieved.
Although the rotation time or the like can be counted as the accumulated usage amount of the supply member, there is also control for changing the rotation speed of the supply member in order to take into account variations in the lubricant application amount due to environmental fluctuations and the like. In such a case, since it is not possible to consider the change in the rotational speed in the cumulative usage time, it is possible to detect the remaining amount of the solid lubricant more accurately by making a determination using the cumulative travel distance of the supply member. .

(態様L)
感光体1などの像担持体と、該像担持体の表面に潤滑剤を供給する潤滑剤供給装置とを有し、画像形成装置本体に対して着脱可能に構成されたプロセスカートリッジにおいて、上記潤滑剤供給装置として、(態様A)乃至(態様K)のいずれの潤滑剤塗布装置3などの潤滑剤供給装置を有していることを特徴とする。
(Aspect L)
In the process cartridge having an image carrier such as the photosensitive member 1 and a lubricant supply device for supplying a lubricant to the surface of the image carrier, and configured to be detachable from the image forming apparatus main body, the lubrication As the agent supply device, a lubricant supply device such as any one of the lubricant application devices 3 of (Aspect A) to (Aspect K) is provided.

これによれば、本実施形態で説明したように、(態様A)乃至(態様K)のいずれの潤滑剤供給装置と同様な効果を奏することができるプロセスカートリッジを提供できる。   According to this, as described in the present embodiment, it is possible to provide a process cartridge that can achieve the same effects as any of the lubricant supply devices of (Aspect A) to (Aspect K).

(態様M)
感光体1などの像担持体と、該像担持体の表面に潤滑剤を供給する潤滑剤供給装置と、を備えたプリンタなどの画像形成装置において、前記潤滑剤供給装置として、(態様A)乃至(態様K)のいずれの潤滑剤塗布装置3などの潤滑剤供給装置を備えたことを特徴とする。
(Aspect M)
In an image forming apparatus such as a printer provided with an image carrier such as the photosensitive member 1 and a lubricant supply device that supplies a lubricant to the surface of the image carrier, the lubricant supply device may be (Aspect A) A lubricant supply device such as any one of the lubricant application devices 3 of (Aspect K) is provided.

これによれば、本実施形態で説明したように、(態様A)乃至(態様K)のいずれの潤滑剤供給装置と同様な効果を奏することができる画像形成装置を提供できる。   According to this, as described in the present embodiment, it is possible to provide an image forming apparatus that can achieve the same effects as any of the lubricant supply devices of (Aspect A) to (Aspect K).

1 感光体
3 潤滑剤塗布装置
3a 塗布ローラ
3b 固形潤滑剤
3c 押圧機構
3d 潤滑剤保持部材
3e 収納ケース
31a 加圧バネ
40 潤滑剤残量検知手段
41 電極部材
42 検知部
100 制御部
DESCRIPTION OF SYMBOLS 1 Photoconductor 3 Lubricant application apparatus 3a Application | coating roller 3b Solid lubricant 3c Press mechanism 3d Lubricant holding member 3e Storage case 31a Pressure spring 40 Lubricant residual amount detection means 41 Electrode member 42 Detection part 100 Control part

特許第5532408号広報Patent No. 5532408

Claims (13)

固形潤滑剤と、該固形潤滑剤の潤滑剤を供給対象に供給する供給部材と、前記固形潤滑剤の残量を検知する残量検知手段とを備えた潤滑剤供給装置において、
前記残量検知手段は、前記供給対象への供給動作停止中に残量検知を行い、
前記残量検知を開始してから完了するまでの間に、当該潤滑剤供給装置を用いる装置からの次動作の開始要求があった場合、前記固形潤滑剤の残量の変化に相関を持つ値を計数する手段により計数した値が、
予め定めた閾値未満であった場合に、前記残量検知を中断し、前記開始要求に応じて前記次動作を開始し、
予め定めた閾値以上であった場合に、前記残量検知が完了するまで、前記開始要求に応じた前記次動作の開始を待機させることを特徴とする潤滑剤供給装置。
In a lubricant supply device comprising: a solid lubricant; a supply member that supplies the solid lubricant to a supply target; and a remaining amount detecting means that detects a remaining amount of the solid lubricant.
The remaining amount detecting means performs remaining amount detection while the supply operation to the supply target is stopped,
A value having a correlation with a change in the remaining amount of the solid lubricant when there is a request for starting the next operation from the device using the lubricant supply device between the start and the completion of the remaining amount detection. The value counted by the means for counting
When it is less than a predetermined threshold, the remaining amount detection is interrupted, and the next operation is started in response to the start request,
A lubricant supply device that waits for the start of the next operation according to the start request until the remaining amount detection is completed when the threshold value is equal to or greater than a predetermined threshold.
固形潤滑剤と、該固形潤滑剤の潤滑剤を供給対象に供給する供給部材と、前記固形潤滑剤の残量を検知する残量検知手段とを備えた潤滑剤供給装置において、
前記残量検知手段は、複数段階に分けた残量状態の検知が可能であり、前記供給対象への供給動作停止中に残量検知を行い、
前記残量検知を開始してから完了するまでの間に、当該潤滑剤供給装置を用いる装置からの次動作の開始要求があった場合、
前記残量検知手段で検知した残量状態に係る情報と、前記開始要求に応じた潤滑剤の供給量の目安となる値とに基づいて、
前記残量検知を中断し、前記開始要求に応じて前記次動作を開始するか、
前記残量検知が完了するまで、前記開始要求に応じた前記次動作の開始を待機させるか、前記開始要求に応じた前記次動作の開始を禁止するか、を判断することを特徴とする潤滑剤供給装置。
In a lubricant supply device comprising: a solid lubricant; a supply member that supplies the solid lubricant to a supply target; and a remaining amount detecting means that detects a remaining amount of the solid lubricant.
The remaining amount detecting means is capable of detecting the remaining amount state divided into a plurality of stages, performing the remaining amount detection while the supply operation to the supply target is stopped,
If there is a request for starting the next operation from the device using the lubricant supply device between the start and the completion of the remaining amount detection,
Based on the information related to the remaining amount state detected by the remaining amount detecting means, and a value serving as a guide for the amount of lubricant supplied in response to the start request,
Interrupt the remaining amount detection and start the next operation in response to the start request,
Lubrication characterized by determining whether to wait for the start of the next operation according to the start request or to prohibit the start of the next operation according to the start request until the remaining amount detection is completed. Agent supply device.
請求項2に記載の潤滑剤供給装置において、
前記複数段階に分けた残量状態の内、最も早く検出した第一の検出タイミングを、前記固形潤滑剤の残量が残りわずかの状態であるニアエンド状態と判断し、最後に検出した第二の検出タイミングを、供給する潤滑剤が枯渇する直前の、前記固形潤滑剤のエンド状態と判断することを特徴とする潤滑剤供給装置。
The lubricant supply device according to claim 2,
Among the remaining amount states divided into the plurality of stages, the first detection timing detected earliest is determined as a near-end state in which the remaining amount of the solid lubricant is a little remaining state, and the second detected last The lubricant supply device, wherein the detection timing is determined as an end state of the solid lubricant immediately before the supplied lubricant is exhausted.
請求項1乃至3のいずれか一に記載の潤滑剤供給装置において、
前記残量検知手段は、前記固形潤滑剤の残量に応じて、接触して導電する導電状態と、離間して非導通状態とに切り替わる、少なくとも2つの導電性部材を有した導通検知部を備えており、
前記導通検知部の導通状態から、前記固形潤滑剤の残量を検知することを特徴とする潤滑剤供給装置。
In the lubricant supply device according to any one of claims 1 to 3,
The remaining amount detecting means includes a conduction detecting unit having at least two conductive members that switch between a conductive state that contacts and conducts and a non-conducted state that contacts and conducts according to the remaining amount of the solid lubricant. With
A lubricant supply device that detects a remaining amount of the solid lubricant from a conduction state of the conduction detection unit.
請求項4に記載の潤滑剤供給装置において、
前記導通検知部は、前記固形潤滑剤の長手方向の複数個所に設けられていることを特徴とする潤滑剤供給装置。
The lubricant supply device according to claim 4,
The conduction detector is provided at a plurality of locations in the longitudinal direction of the solid lubricant.
請求項5に記載の潤滑剤供給装置において、
前記導通検知部は、前記固形潤滑剤の長手方向の少なくとも両端部近傍に設けられていることを特徴とする潤滑剤供給装置。
In the lubricant supply device according to claim 5,
The continuity detecting unit is provided in the vicinity of at least both ends in the longitudinal direction of the solid lubricant.
請求項4乃至6のいずれか一に記載の潤滑剤供給装置において、
前記残量検知手段は、前記導通検知部の導通状態に基づいて、
前記固形潤滑剤の残量が残りわずかの状態であるニアエンド状態を判断することを特徴とする潤滑剤供給装置。
The lubricant supply device according to any one of claims 4 to 6,
The remaining amount detection means is based on a conduction state of the conduction detection unit.
A lubricant supply device that determines a near-end state in which the remaining amount of the solid lubricant is a little remaining.
請求項4乃至7のいずれか一に記載の潤滑剤塗布装置において、
前記固形潤滑剤の残量を検知するときのみ、前記導通検知部への通電動作を行うことを特徴とする潤滑剤供給装置。
In the lubricant application device according to any one of claims 4 to 7,
Only when detecting the remaining amount of the solid lubricant, the lubricant supply device performs an energization operation to the conduction detection unit.
請求項4乃至8のいずれか一に記載の潤滑剤塗布装置において、
前記残量検知手段は、次の(i)〜(v)の順で、前記固形潤滑剤の残量を検知する残量検知に係る動作を行うことを特徴とする潤滑剤供給装置。
(i)供給部材の動作停止
(ii)導通検知部への通電開始
(iii)潤滑剤残量判断の実行開始
(iv)潤滑剤残量判断の実行終了
(v)導通検知部への通電停止
In the lubricant application device according to any one of claims 4 to 8,
The said residual amount detection means performs the operation | movement which concerns on the residual amount detection which detects the residual amount of the said solid lubricant in order of following (i)-(v).
(i) Stopping operation of supply members
(ii) Starting energization to the continuity detector
(iii) Start of determination of lubricant remaining amount
(iv) End of execution of lubricant remaining amount determination
(v) Stopping energization to the continuity detector
請求項4乃至9のいずれか一に記載の潤滑剤塗布装置において、
前記残量検知手段は、前記導通検知部の導通状態と、前記固形潤滑剤の残量の目安となる前記供給部材の累積使用量とに基づいて、
前記固形潤滑剤の残量状態を検知することを特徴とする潤滑剤供給装置。
The lubricant application device according to any one of claims 4 to 9,
The remaining amount detecting means is based on the conduction state of the conduction detecting unit and the cumulative usage amount of the supply member which is a measure of the remaining amount of the solid lubricant.
A lubricant supply device for detecting a remaining state of the solid lubricant.
請求項10に記載の潤滑剤供給装置において、
前記供給部材の累積使用量として、前記供給部材の累積走行距離を用いることを特徴とする潤滑剤供給装置。
The lubricant supply device according to claim 10, wherein
The lubricant supply device according to claim 1, wherein the cumulative travel distance of the supply member is used as the cumulative usage amount of the supply member.
像担持体と、該像担持体の表面に潤滑剤を供給する潤滑剤供給装置とを有し、画像形成装置本体に対して着脱可能に構成されたプロセスカートリッジにおいて、
上記潤滑剤供給装置として、請求項1乃至11のいずれか一に記載の潤滑剤供給装置を有していることを特徴とするプロセスカートリッジ。
In a process cartridge that includes an image carrier and a lubricant supply device that supplies a lubricant to the surface of the image carrier, and is configured to be detachable from the image forming apparatus main body.
A process cartridge comprising the lubricant supply device according to any one of claims 1 to 11 as the lubricant supply device.
像担持体と、該像担持体の表面に潤滑剤を供給する潤滑剤供給装置と、を備えた画像形成装置において、
前記潤滑剤供給装置として、請求項1乃至11のいずれか一に記載の潤滑剤供給装置を備えたことを特徴とする画像形成装置。
In an image forming apparatus comprising: an image carrier; and a lubricant supply device that supplies a lubricant to the surface of the image carrier.
An image forming apparatus comprising the lubricant supply device according to claim 1 as the lubricant supply device.
JP2015133757A 2015-07-02 2015-07-02 Lubricant supply device, process cartridge, and image forming apparatus Pending JP2017015979A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111201490A (en) * 2017-10-31 2020-05-26 惠普发展公司,有限责任合伙企业 Image forming apparatus with lubricant applicator
JP2020106569A (en) * 2018-12-26 2020-07-09 コニカミノルタ株式会社 Image formation device
WO2021041045A1 (en) * 2019-08-29 2021-03-04 Hewlett-Packard Development Company, L.P. Lubricant application device capable of detecting near-end and end of lubricant

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111201490A (en) * 2017-10-31 2020-05-26 惠普发展公司,有限责任合伙企业 Image forming apparatus with lubricant applicator
EP3649514A4 (en) * 2017-10-31 2021-04-28 Hewlett-Packard Development Company, L.P. Image forming apparatus with lubricant applicator
CN111201490B (en) * 2017-10-31 2022-08-26 惠普发展公司,有限责任合伙企业 Image forming apparatus with lubricant applicator
JP2020106569A (en) * 2018-12-26 2020-07-09 コニカミノルタ株式会社 Image formation device
JP7172578B2 (en) 2018-12-26 2022-11-16 コニカミノルタ株式会社 image forming device
WO2021041045A1 (en) * 2019-08-29 2021-03-04 Hewlett-Packard Development Company, L.P. Lubricant application device capable of detecting near-end and end of lubricant
US11579557B2 (en) 2019-08-29 2023-02-14 Hewlett-Packard Development Company, L.P. Lubricant application device capable of detecting near-end and end of lubricant

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