JP2001066893A - Developing device and image forming device - Google Patents
Developing device and image forming deviceInfo
- Publication number
- JP2001066893A JP2001066893A JP24063399A JP24063399A JP2001066893A JP 2001066893 A JP2001066893 A JP 2001066893A JP 24063399 A JP24063399 A JP 24063399A JP 24063399 A JP24063399 A JP 24063399A JP 2001066893 A JP2001066893 A JP 2001066893A
- Authority
- JP
- Japan
- Prior art keywords
- developer
- component developer
- image forming
- stirring
- developing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、例えば複写機ある
いはプリンタなどとされる電子写真方式あるいは静電記
録方式の画像形成装置、および該画像形成装置の現像装
置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrophotographic or electrostatic recording type image forming apparatus such as a copying machine or a printer, and a developing device of the image forming apparatus.
【０００２】[0002]
【従来の技術】２成分現像方式では、長期使用による現
像剤の劣化、特にキャリアの劣化が不可避であるため、
画像形成装置の長期使用に伴い、現像剤を交換する手間
が必要であった。他方、現像剤の長寿命化の技術も徐々
に進歩してきているが、現状ではまだ十分ではない。2. Description of the Related Art In a two-component developing system, deterioration of a developer due to long-term use, particularly deterioration of a carrier, is inevitable.
With the long-term use of the image forming apparatus, it has been necessary to replace the developer. On the other hand, the technology for prolonging the life of the developer is gradually progressing, but at present it is not enough.
【０００３】このような状況下において、劣化した現像
剤を少量ずつ回収しその分の現像剤を新たに補給するこ
とで、現像剤の性能をある程度維持しながら現像剤の交
換の手間を省く方法が、特開平９−２１８５７５号公
報、および特開平１０−６３０７４号公報などにて提案
されている。In such a situation, a method of recovering the deteriorated developer little by little and replenishing the developer anew in such a manner to save the trouble of replacing the developer while maintaining the performance of the developer to some extent. Have been proposed in Japanese Patent Application Laid-Open Nos. 9-218575 and 10-63074.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、従来提
案されてきたこれらの技術は、回転式の現像装置を用い
た構成であったり、あるいは複雑な回収機構を設けたり
したものであった。However, these techniques, which have been conventionally proposed, have a configuration using a rotary developing device or have a complicated recovery mechanism.
【０００５】この従来の技術が複雑なものとなっている
背景の一つに、現像剤の排出量がある程度一定にならな
いと、現像装置内の現像剤量が過剰、もしくは過少とな
ってしまい、画像上の不具合を引き起こす可能性がある
ことがある。One of the reasons why this conventional technique is complicated is that if the amount of discharged developer is not constant to some extent, the amount of developer in the developing device becomes excessive or too small. May cause image defects.
【０００６】従って、本発明の目的は、現像剤の排出量
がほぼ一定となるような現像剤回収手段を簡易な構成で
実現し、特に、回転式の現像装置を用いない構成におい
て、現像剤の交換の手間を省き、長期にわたって画像の
品質を安定的に保証することができる現像装置および画
像形成装置を提供することである。SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to realize a developer collecting means that makes the amount of discharged developer substantially constant with a simple configuration. It is an object of the present invention to provide a developing device and an image forming apparatus which can save the trouble of replacement of the image forming apparatus and can stably guarantee the image quality for a long time.
【０００７】[0007]
【課題を解決するための手段】上記目的は本発明に係る
現像装置および画像形成装置にて達成される。要約すれ
ば、本発明は、非磁性トナーと磁性キャリアを含む２成
分現像剤を収容する現像容器と、前記現像容器に収容さ
れた２成分現像剤を攪拌搬送するための、前記現像容器
に回転自在に設置された現像剤攪拌搬送手段と、を有す
る現像装置において、前記現像剤攪拌搬送手段の端部に
て前記現像容器内の２成分現像剤が排出されることを特
徴とする現像装置である。The above object is achieved by a developing device and an image forming apparatus according to the present invention. In summary, the present invention provides a developing container containing a two-component developer containing a non-magnetic toner and a magnetic carrier, and a rotating container for stirring and transporting the two-component developer contained in the developing container. A developer stirring and conveying means freely installed, wherein the two-component developer in the developing container is discharged at an end of the developer stirring and conveying means. is there.
【０００８】本発明による他の態様によれば、非磁性ト
ナーと磁性キャリアを含む２成分現像剤を収容する現像
容器と、前記現像容器に収容された２成分現像剤を攪拌
搬送するための、前記現像容器に回転自在に設置された
現像剤攪拌搬送手段と、を有する現像装置を具備する画
像形成装置において、前記現像剤攪拌搬送手段の端部に
て前記現像容器内の２成分現像剤が排出されることを特
徴とする画像形成装置が提供される。According to another aspect of the present invention, there is provided a developing container for containing a two-component developer containing a non-magnetic toner and a magnetic carrier, and a stirrer for conveying the two-component developer contained in the developing container. A developer stirring and conveying means rotatably installed in the developing container; and an image forming apparatus comprising: a two-component developer in the developing container at an end of the developer stirring and conveying means. An image forming apparatus characterized by being discharged is provided.
【０００９】上記発明において、前記現像剤担持体の端
部にて前記現像容器から排出される２成分現像剤を回収
するための現像剤回収手段を備えることが好ましい。前
記現像容器に、前記磁性キャリアまたは前記２成分現像
剤を補給するための現像剤補給手段を備えることが好ま
しい。前記現像剤攪拌搬送手段の端部の前記２成分現像
剤が排出される領域において、排出される前記２成分現
像剤の量を規制するための規制部材を設けることが好ま
しい。前記現像剤攪拌搬送手段の端部の前記２成分現像
剤が排出される領域において、前記現像剤攪拌搬送手段
の端部での前記２成分現像剤搬送力が、前記現像剤攪拌
搬送手段の他の部分と異なることが好ましい。前記現像
剤攪拌搬送手段の端部の前記２成分現像剤が排出される
領域において、前記現像容器内壁の表面が低摩擦処理さ
れていることが好ましい。In the above invention, it is preferable that a developer collecting means for collecting the two-component developer discharged from the developing container at an end of the developer carrier is provided. The developing container preferably includes a developer replenishing unit for replenishing the magnetic carrier or the two-component developer. It is preferable that a regulating member for regulating the amount of the discharged two-component developer is provided in an area of the end of the developer stirring and conveying unit where the two-component developer is discharged. In a region where the two-component developer is discharged at the end of the developer stirring and conveying unit, the two-component developer conveying force at the end of the developer stirring and conveying unit is different from that of the developer stirring and conveying unit. It is preferably different from the part. It is preferable that the surface of the inner wall of the developing container is subjected to a low friction treatment in a region where the two-component developer is discharged at an end of the developer stirring and conveying unit.
【００１０】[0010]
【発明の実施の形態】以下、本発明に係る現像装置およ
び画像形成装置を図面に則して更に詳しく説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a developing device and an image forming apparatus according to the present invention will be described in more detail with reference to the drawings.
【００１１】実施例１ 本発明の第１実施例について図１〜図３により説明す
る。Embodiment 1 A first embodiment of the present invention will be described with reference to FIGS.
【００１２】まず、図１により、本実施例のフルカラー
画像形成装置について説明する。First, a full-color image forming apparatus according to the present embodiment will be described with reference to FIG.
【００１３】本実施例のフルカラー画像形成装置は、同
様の構成を備えた４つの画像形成ステーション、すなわ
ち、イエローＹ、マゼンタＭ、シアンＣ、ブラックＫの
各色に対応した画像形成ステーションが２つのローラ２
４ａ、２４ｂに張設された搬送ベルト２４の搬送方向に
沿って並列されている。The full-color image forming apparatus according to the present embodiment has four image forming stations having the same configuration, that is, image forming stations corresponding to the respective colors of yellow Y, magenta M, cyan C, and black K. 2
4a, 24b are arranged side by side along the transport direction of the transport belt 24 stretched.
【００１４】イエロー用の画像形成ステーションにおい
て、像担持体である感光ドラム２８Ｙが回動自在に設け
られており、その感光ドラム２８Ｙを一次帯電器２１Ｙ
で一様に帯電し、例えばレーザーのような発光素子２２
Ｙによって情報信号に応じて変調された光で露光して静
電潜像を形成する。その静電潜像は現像装置１Ｙによ
り、トナー像として可視像化される。つぎにその可視像
を転写帯電器２３Ｙによって転写紙２７に転写する。In the image forming station for yellow, a photosensitive drum 28Y as an image carrier is rotatably provided, and the photosensitive drum 28Y is attached to a primary charger 21Y.
Light-emitting element 22 such as a laser
Exposure is performed with light modulated according to the information signal by Y to form an electrostatic latent image. The electrostatic latent image is visualized as a toner image by the developing device 1Y. Next, the visible image is transferred to the transfer paper 27 by the transfer charger 23Y.
【００１５】同様の画像形成が下流側の画像形成ステー
ションにて行なわれることによって、４色の画像が転写
紙４上に重ね合わされ、更に定着装置２５によって定着
して永久画像を得る。また、各感光ドラム２８Ｙ、２８
Ｍ、２８Ｃ、２８Ｋ上の転写残トナーはそれぞれクリー
ニング装置２６Ｙ、２６Ｍ、２６Ｃ、２４Ｋにより除去
する。By performing the same image formation at the image forming station on the downstream side, images of four colors are superimposed on the transfer paper 4 and further fixed by the fixing device 25 to obtain a permanent image. Further, each photosensitive drum 28Y, 28
The transfer residual toner on M, 28C, and 28K is removed by cleaning devices 26Y, 26M, 26C, and 24K, respectively.
【００１６】つぎに、本実施例の現像装置の動作につい
て説明する。なお、以下の説明において、例えば現像装
置１とあれば、Ｙ、Ｍ、Ｃ、Ｋ各ステーションにおける
現像装置１Ｙ、現像装置１Ｍ、現像装置１Ｃ、現像装置
１Ｋを共通してさすものとする。Next, the operation of the developing device of this embodiment will be described. In the following description, for example, if the developing device 1 is used, the developing device 1Y, the developing device 1M, the developing device 1C, and the developing device 1K in each of the Y, M, C, and K stations are commonly used.
【００１７】図２において、感光ドラム２８と対向して
配置された現像装置１は、非磁性トナーと磁性キャリア
からなる２成分現像剤が収容されている現像容器２、お
よび現像剤担持体としての現像スリーブ３を有してい
る。In FIG. 2, a developing device 1 arranged opposite to a photosensitive drum 28 includes a developing container 2 containing a two-component developer composed of a non-magnetic toner and a magnetic carrier, and a developer carrier It has a developing sleeve 3.
【００１８】現像容器２は感光ドラム２８に対向した現
像領域が開口しており、この開口部に一部露出するよう
にして現像スリーブ３が回転可能に配置されている。現
像スリーブ３は非磁性材料で構成され、現像動作時には
図２の矢印方向に回転し、その内部には磁界発生手段で
あるマグネット５が固定されている。マグネット５を内
蔵する現像スリーブ３は現像容器２内の２成分現像剤を
層状に保持して感光ドラム２８と対向する現像領域に供
給し、感光ドラム２８に形成されている静電潜像を現像
する。The developing container 2 has an opening in a developing area facing the photosensitive drum 28, and the developing sleeve 3 is rotatably arranged so as to be partially exposed in the opening. The developing sleeve 3 is made of a non-magnetic material, rotates in the direction of the arrow in FIG. 2 during the developing operation, and has a magnet 5 serving as a magnetic field generating means fixed therein. The developing sleeve 3 containing the magnet 5 holds the two-component developer in the developing container 2 in a layered state and supplies it to a developing area facing the photosensitive drum 28 to develop the electrostatic latent image formed on the photosensitive drum 28. I do.
【００１９】また、現像容器２は隔壁１２により２つの
空間に仕切られており、ともに非磁性トナーと磁性キャ
リアからなる２成分現像剤が収容されている。一般に現
像スリーブ３側の空間を現像室２Ａ、他方の空間を攪拌
室２Ｂと呼んでいる。そして、現像室２Ａ、攪拌室２Ｂ
にはそれぞれ現像剤攪拌搬送手段としての攪拌搬送スク
リュー４（４Ａ、４Ｂ）が設けられている。The developing container 2 is partitioned by a partition 12 into two spaces, each containing a two-component developer composed of a non-magnetic toner and a magnetic carrier. Generally, the space on the side of the developing sleeve 3 is called a developing chamber 2A, and the other space is called a stirring chamber 2B. Then, the developing chamber 2A and the stirring chamber 2B
Are provided with stirring and conveying screws 4 (4A, 4B) as developer stirring and conveying means, respectively.
【００２０】更に、現像容器２の上部には現像剤補給手
段としての、トナー補給槽１０およびキャリア補給槽１
１が設けられている。そして、画像形成で消費されたト
ナーはトナー補給槽１０から補給される。Further, a toner replenishing tank 10 and a carrier replenishing tank 1 serving as developer replenishing means are provided above the developing container 2.
1 is provided. Then, the toner consumed in the image formation is supplied from the toner supply tank 10.
【００２１】つぎに、本発明の特徴的な部分について主
に図３により更に詳しく説明する。図３は現像装置１の
奥側端部の現像容器攪拌室２Ｂを、感光ドラム２８へ開
口する方向から見たものである。Next, the characteristic portions of the present invention will be described in more detail mainly with reference to FIG. FIG. 3 is a view of the developing container stirring chamber 2 </ b> B at the rear end of the developing device 1 as viewed from the direction in which it opens to the photosensitive drum 28.
【００２２】攪拌室２Ｂにおいては、２成分現像剤が攪
拌搬送スクリュー４Ｂにより現像装置手前側から奥側端
部に搬送され、そのうちほとんどの２成分現像剤が一部
隔壁のない現像剤引き渡し通路（不図示）を通って、攪
拌室２Ｂから現像室２Ａへと送られる。In the stirring chamber 2B, the two-component developer is transported from the near side of the developing device to the far end by the agitating / conveying screw 4B, and most of the two-component developer is partially passed through the developer delivery passage (without partition walls). (Not shown) from the stirring chamber 2B to the developing chamber 2A.
【００２３】この時、図３に示す攪拌室２Ｂ端部におい
ては、攪拌搬送スクリュー４Ｂにより搬送された２成分
現像剤Ｔの対流速度が一時的に減速され、２成分現像剤
溜りが生じ、現像容器２の内壁に対する圧力が増加す
る。そのため２成分現像剤Ｔの一部は攪拌搬送スクリュ
ー４Ｂの支持軸４Ｂ１と現像容器２の支持部２ａの隙間
ｇを通りぬけ、空隙Ｂ付近に蓄積される。その漏れ出し
量は現像容器２に支持された規制部材７によって制限さ
れており、これによって攪拌搬送スクリュー４Ｂの１回
転当たりの漏れ出し量を一定にすることができる。そし
て、空隙Ｂ付近に蓄積された２成分現像剤の量がある程
度以上になると、２成分現像剤は空隙Ｂから徐々に押し
出され、現像容器２に付設された現像剤回収手段として
の回収容器６内に落下する。At this time, at the end of the agitating chamber 2B shown in FIG. 3, the convection speed of the two-component developer T conveyed by the agitating and conveying screw 4B is temporarily reduced, so that a two-component developer pool is generated. The pressure on the inner wall of the container 2 increases. Therefore, a part of the two-component developer T passes through the gap g between the support shaft 4B1 of the stirring and conveying screw 4B and the support 2a of the developing container 2, and is accumulated near the gap B. The amount of leakage is restricted by the regulating member 7 supported by the developing container 2, whereby the amount of leakage per rotation of the stirring and conveying screw 4B can be made constant. When the amount of the two-component developer accumulated in the vicinity of the gap B reaches a certain level or more, the two-component developer is gradually extruded from the gap B, and the collecting container 6 provided as a developer collecting means attached to the developing container 2. Fall into.
【００２４】回収された分の現像剤Ｔは、キャリア補給
槽１１から補給されるキャリアによって補われる。な
お、本実施例ではキャリアのみを単独で補給する機構が
備えられているが、キャリアをトナーと予め混合して現
像剤の状態にしておき、これを補給してもよい。The recovered developer T is supplemented by the carrier supplied from the carrier supply tank 11. In the present embodiment, a mechanism for replenishing only the carrier alone is provided. However, the carrier may be preliminarily mixed with the toner so as to be in a developer state, and then replenished.
【００２５】上記のような構成をとることによって、攪
拌搬送スクリュー４Ｂの回転数に従ってほぼ一定量の現
像剤が回収でき、現像剤を徐々に入れ替えることによっ
て現像剤の交換の手間を省き、長期にわたって画像の品
質を安定的に保証することができる現像装置を、簡易な
構成において提供することができる。By adopting the above configuration, a substantially constant amount of the developer can be recovered in accordance with the rotation speed of the stirring and conveying screw 4B. A developing device capable of stably guaranteeing image quality can be provided with a simple configuration.
【００２６】実施例２ つぎに、本発明の第２実施例について図４により説明す
る。本実施例の現像装置の構成は、第１実施例とほぼ同
様の構成であるが、攪拌搬送スクリュー端部の、現像剤
が排出される領域における現像剤搬送能力が、画像形成
領域における攪拌搬送スクリューの現像剤搬送能力と異
なるという特徴を有する。現像剤搬送能力とは、具体的
にあげると、攪拌搬送スクリューのスクリュー径、スク
リューピッチ、スクリュー構成部材と現像剤との摩擦係
数などである。Embodiment 2 Next, a second embodiment of the present invention will be described with reference to FIG. The configuration of the developing device of this embodiment is almost the same as that of the first embodiment, except that the developer carrying capacity in the area where the developer is discharged at the end of the agitating and carrying screw is agitated and carried in the image forming area. It has a feature that it is different from the developer carrying capacity of the screw. Specifically, the developer carrying capacity is, for example, the screw diameter of the stirring and carrying screw, the screw pitch, the coefficient of friction between the screw constituent member and the developer, and the like.
【００２７】本実施例では、攪拌搬送スクリュー４Ｂの
羽根４Ｂ２が規制部材７の更に図中左側の部分まで延設
されており、更に端部にいくに従って羽根４Ｂ２の径が
小さくなるような構成とした。In this embodiment, the blade 4B2 of the stirring / conveying screw 4B extends further to the left portion of the regulating member 7 in the figure, and the diameter of the blade 4B2 becomes smaller toward the end. did.
【００２８】このような構成とすることにより、空隙Ｂ
に漏れ出す現像剤の量を正確に調整でき、また、２成分
現像剤に過剰な圧力、摩擦力が加わるなどして凝集する
ことから生じるさまざまな弊害を防止することができ
る。With such a configuration, the gap B
The amount of the developer leaking to the developer can be accurately adjusted, and various adverse effects caused by agglomeration due to excessive pressure or frictional force applied to the two-component developer can be prevented.
【００２９】本実施例の構成によれば、本発明の目的が
より望ましい形で達成される。According to the structure of this embodiment, the object of the present invention is achieved in a more desirable manner.
【００３０】実施例３ つぎに、本発明の第３実施例について説明する。なお、
本実施例の現像装置は第１実施例と同様の構成を備えて
いるが、以下のような特徴を有する。Embodiment 3 Next, a third embodiment of the present invention will be described. In addition,
The developing device of this embodiment has the same configuration as that of the first embodiment, but has the following features.
【００３１】本実施例では、図３中に示した空隙Ｂの壁
面がフッ素樹脂などでコーティングされている。In this embodiment, the wall surfaces of the gap B shown in FIG. 3 are coated with a fluororesin or the like.
【００３２】このような構成とすることにより、空隙Ｂ
に漏れ出した現像剤と壁面の間に働く摩擦力が軽減で
き、漏れ出した現像剤の量をより正確に調整することが
可能となることに加え、２成分現像剤に過剰な圧力、摩
擦力が加わるなどして凝集することから生じるさまざま
な弊害を防止することができる。With such a configuration, the gap B
In addition to reducing the frictional force acting between the leaked developer and the wall surface, the amount of the leaked developer can be adjusted more accurately. Various adverse effects resulting from aggregation due to application of force can be prevented.
【００３３】以上のような構成により、本発明の目的が
より望ましい構成で達成される。With the above configuration, the object of the present invention is achieved with a more desirable configuration.
【００３４】[0034]
【発明の効果】以上の説明から明らかなように、本発明
の現像装置および画像形成装置によれば、現像剤攪拌搬
送手段の端部にて現像容器内の２成分現像剤が排出され
ることにより、現像剤の排出量がほぼ一定となるような
現像剤回収手段を簡易な構成で実現し、特に、回転式の
現像装置を用いない構成において、現像剤の交換の手間
を省き、長期にわたって画像の品質を安定的に保証する
ことができる。As is apparent from the above description, according to the developing apparatus and the image forming apparatus of the present invention, the two-component developer in the developing container is discharged at the end of the developer stirring and conveying means. With this configuration, a simple configuration of the developer collecting unit that makes the discharge amount of the developer substantially constant can be realized. Particularly, in a configuration that does not use a rotary developing device, the trouble of replacing the developer can be omitted, and a long term can be achieved. Image quality can be stably guaranteed.
【図１】本発明の第１、第２実施例に係るカラー画像形
成装置を示す概略構成図である。FIG. 1 is a schematic configuration diagram illustrating a color image forming apparatus according to first and second embodiments of the present invention.
【図２】本発明の第１、第２実施例に係る現像装置を示
す概略構成図である。FIG. 2 is a schematic configuration diagram showing a developing device according to first and second embodiments of the present invention.
【図３】第１実施例の現像剤回収手段を示す説明図であ
る。FIG. 3 is an explanatory diagram illustrating a developer collecting unit according to the first embodiment.
【図４】第２実施例の現像剤回収手段を示す説明図であ
る。FIG. 4 is an explanatory diagram illustrating a developer collecting unit according to a second embodiment.
１ 現像装置 ２ 現像容器 ４ 現像剤攪拌搬送スクリュー（現像剤攪拌搬
送手段） ６ 回収容器（現像剤回収手段） ７ 規制部材 １０ トナー補給槽（現像剤補給手段） １１ キャリア補給槽（現像剤補給手段） Ｔ 二成分現像剤REFERENCE SIGNS LIST 1 developing device 2 developing container 4 developer stirring and conveying screw (developer stirring and conveying unit) 6 collection container (developer collecting unit) 7 regulating member 10 toner replenishing tank (developer replenishing unit) 11 carrier replenishing tank (developer replenishing unit) ) T two-component developer
Claims (12)
分現像剤を収容する現像容器と、前記現像容器に収容さ
れた２成分現像剤を攪拌搬送するための、前記現像容器
に回転自在に設置された現像剤攪拌搬送手段とを備えた
現像装置において、 前記現像剤攪拌搬送手段の端部にて前記現像容器内の２
成分現像剤が排出されることを特徴とする現像装置。1. A developing container for containing a two-component developer containing a non-magnetic toner and a magnetic carrier, and a rotatably installed container for stirring and transporting the two-component developer contained in the developing container. A developer agitating and transporting means, wherein the developer agitating and transporting means has an end located at the end of the developer agitating and transporting means.
A developing device for discharging a component developer.
器から排出された２成分現像剤を回収するための現像剤
回収手段を備えたことを特徴とする請求項１の現像装
置。2. The developing device according to claim 1, further comprising a developer collecting means for collecting a two-component developer discharged from the developing container at an end of the developer carrier.
は前記２成分現像剤を補給するための現像剤補給手段を
備えたことを特徴とする請求項１または２の現像装置。3. The developing device according to claim 1, further comprising a developer replenishing unit for replenishing the magnetic carrier or the two-component developer in the developing container.
成分現像剤が排出される領域において、排出される前記
２成分現像剤の量を規制するための規制部材を設けたこ
とを特徴とする請求項１、２、または３の現像装置。4. An image forming apparatus according to claim 1, wherein said developer agitating / conveying means has an end.
4. The developing device according to claim 1, further comprising a regulating member for regulating an amount of the discharged two-component developer in a region where the component developer is discharged.
成分現像剤が排出される領域において、前記現像剤攪拌
搬送手段の端部での前記２成分現像剤搬送力が、前記現
像剤攪拌搬送手段の他の部分と異なることを特徴とする
請求項１から４のいずれかの現像装置。5. An image forming apparatus according to claim 2, wherein said developer agitating and conveying means has an end.
2. The developer stirring / transporting unit according to claim 1, wherein the two-component developer conveying force at an end of the developer stirring / conveying unit is different from other portions of the developer stirring / conveying unit in a region where the component developer is discharged. The developing device according to any one of items 1 to 4.
成分現像剤が排出される領域において、前記現像容器内
壁の表面が低摩擦処理されていることを特徴とする請求
項１から４のいずれかの現像装置。6. An image forming apparatus according to claim 1, wherein said developer agitating / conveying means has an end.
The developing device according to any one of claims 1 to 4, wherein a surface of the inner wall of the developing container is subjected to a low friction treatment in a region where the component developer is discharged.
分現像剤を収容する現像容器と、前記現像容器に収容さ
れた２成分現像剤を攪拌搬送するための、前記現像容器
に回転自在に設置された現像剤攪拌搬送手段と、を有す
る現像装置を具備する画像形成装置において、 前記現像剤攪拌搬送手段の端部にて前記現像容器内の２
成分現像剤が排出されることを特徴とする画像形成装
置。7. A developing container for containing a two-component developer containing a non-magnetic toner and a magnetic carrier, and a rotatably installed in the developing container for stirring and transporting the two-component developer contained in the developing container. An image forming apparatus including a developing device having a developer agitating and transporting means, wherein the developer agitating and transporting means includes a developing device and
An image forming apparatus wherein a component developer is discharged.
器から排出された２成分現像剤を回収するための現像剤
回収手段を備えたことを特徴とする請求項７の画像形成
装置。8. An image forming apparatus according to claim 7, further comprising a developer collecting means for collecting a two-component developer discharged from said developing container at an end of said developer carrying member. .
は前記２成分現像剤を補給するための現像剤補給手段を
備えたことを特徴とする請求項７または８の画像形成装
置。9. The image forming apparatus according to claim 7, further comprising: a developer replenishing unit for replenishing the magnetic carrier or the two-component developer to the developing container.
２成分現像剤が排出される領域において、排出される前
記２成分現像剤の量を規制するための規制部材を設けた
ことを特徴とする請求項７、８、または９の画像形成装
置。10. A regulating member for regulating an amount of the discharged two-component developer is provided in an area of the end of the developer stirring and conveying means where the two-component developer is discharged. The image forming apparatus according to claim 7, 8, or 9.
２成分現像剤が排出される領域において、前記現像剤攪
拌搬送手段の端部での前記２成分現像剤搬送力が、前記
現像剤攪拌搬送手段の他の部分と異なることを特徴とす
る請求項７から１０のいずれかの画像形成装置。11. In the area where the two-component developer is discharged at the end of the developer stirring and conveying means, the two-component developer conveying force at the end of the developer stirring and conveying means is controlled by the developer. The image forming apparatus according to any one of claims 7 to 10, wherein the image forming apparatus is different from the other parts of the stirring and conveying unit.
２成分現像剤が排出される領域において、前記現像容器
内壁の表面が低摩擦処理されていることを特徴とする請
求項７から１０のいずれかの画像形成装置。12. The developing container according to claim 7, wherein a surface of the inner wall of the developing container is subjected to a low friction treatment in a region where the two-component developer is discharged at an end portion of the developer stirring and conveying means. Any one of the image forming apparatuses.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24063399A JP2001066893A (en) | 1999-08-26 | 1999-08-26 | Developing device and image forming device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP24063399A JP2001066893A (en) | 1999-08-26 | 1999-08-26 | Developing device and image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2001066893A true JP2001066893A (en) | 2001-03-16 |
Family
ID=17062410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP24063399A Pending JP2001066893A (en) | 1999-08-26 | 1999-08-26 | Developing device and image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2001066893A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007086477A (en) * | 2005-09-22 | 2007-04-05 | Fuji Xerox Co Ltd | Process cartridge |
| US7376374B2 (en) | 2005-01-26 | 2008-05-20 | Sharp Kabushiki Kaisha | Development apparatus and image forming apparatus comprising the same |
| JP2010186099A (en) * | 2009-02-13 | 2010-08-26 | Canon Inc | Developing device and image forming apparatus |
| JP2017049315A (en) * | 2015-08-31 | 2017-03-09 | キヤノン株式会社 | Development apparatus |
-
1999
- 1999-08-26 JP JP24063399A patent/JP2001066893A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7376374B2 (en) | 2005-01-26 | 2008-05-20 | Sharp Kabushiki Kaisha | Development apparatus and image forming apparatus comprising the same |
| JP2007086477A (en) * | 2005-09-22 | 2007-04-05 | Fuji Xerox Co Ltd | Process cartridge |
| JP2010186099A (en) * | 2009-02-13 | 2010-08-26 | Canon Inc | Developing device and image forming apparatus |
| JP2017049315A (en) * | 2015-08-31 | 2017-03-09 | キヤノン株式会社 | Development apparatus |
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