JPH0221049A - Transmission - Google Patents
TransmissionInfo
- Publication number
- JPH0221049A JPH0221049A JP62336683A JP33668387A JPH0221049A JP H0221049 A JPH0221049 A JP H0221049A JP 62336683 A JP62336683 A JP 62336683A JP 33668387 A JP33668387 A JP 33668387A JP H0221049 A JPH0221049 A JP H0221049A
- Authority
- JP
- Japan
- Prior art keywords
- gear
- developing roller
- rotating body
- roller
- 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.)
- Granted
Links
- 230000005540 biological transmission Effects 0.000 title claims description 36
- 230000033001 locomotion Effects 0.000 claims abstract description 5
- 238000013459 approach Methods 0.000 claims description 2
- 238000003466 welding Methods 0.000 abstract description 3
- 108091008695 photoreceptors Proteins 0.000 description 31
- 230000001105 regulatory effect Effects 0.000 description 7
- 238000011161 development Methods 0.000 description 6
- 238000004140 cleaning Methods 0.000 description 5
- 238000012546 transfer Methods 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007645 offset printing Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 241000519995 Stachys sylvatica Species 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000026058 directional locomotion Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000000968 intestinal effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001454 recorded image Methods 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
- Friction Gearing (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】
岐亙分災
本発明は、回転駆動される第１の回転体に圧接した第２
の回転体に駆動装置からの回転力を伝える伝動装置に関
する。[Detailed Description of the Invention] The present invention provides a second rotating body that is in pressure contact with a first rotating body that is rotationally driven.
The present invention relates to a transmission device that transmits rotational force from a drive device to a rotating body.
災米艮亙
上記形式の伝動装置は各種の機械に利用することができ
る。例えば、電子複写機、プリンタ又はファクシミリ等
の画像形成装置において、像担持ドラムより成る第１の
回転体に、現像ローラより成る第２の回転体を圧接させ
、該ローラを上記形式の伝動装置を介して回転駆動する
ことが従来より広く行われている。この場合、第１の回
転体と第２の回転体をその軸方向に亘って均一な圧力で
圧接させることが要求されることが多い。これを上述の
画像形成装置を例にとって説明する。The above type of transmission device can be used in various machines. For example, in an image forming apparatus such as an electronic copying machine, a printer, or a facsimile machine, a second rotating body consisting of a developing roller is brought into pressure contact with a first rotating body consisting of an image bearing drum, and the roller is connected to a transmission device of the above type. Conventionally, it has been widely used to drive rotation through In this case, it is often required that the first rotating body and the second rotating body be brought into pressure contact with each other with uniform pressure over the axial direction thereof. This will be explained using the above-mentioned image forming apparatus as an example.
この種の画像形成装置は、トナーを担持した現像ローラ
（第２の回転体）の表面と像担持ドラム（第１の回転体
）の表面とを圧接させ、現像ローラと像担持ドラムを回
転させながら該ドラムに形成された静電潜像を可視像化
し、該可視像を転写材に転写して記録画像を得るもので
あって、所謂接触現像によって可視像を形成するもので
ある。This type of image forming apparatus rotates the developing roller and image carrying drum by bringing the surface of a developing roller (second rotating body) carrying toner into pressure contact with the surface of an image carrying drum (first rotating body). However, the electrostatic latent image formed on the drum is visualized and the visible image is transferred to a transfer material to obtain a recorded image, and the visible image is formed by so-called contact development. .
その際、形成される可視像の画質を高め、これを安定化
させるには、現像ローラと像担持ドラムをその軸方向に
亘って常に均一な圧力で圧接させることが望ましい。こ
れを可能とするには、現像ローラと像担持ドラムを組付
けるとき、両者を正確に平行に配置してこれらを機械本
体（画像形成装置本体）に位置不動に取付け、両者の圧
接力を均一化させることが考えられる。ところが現像ロ
ーラや像担持ドラムは、その製造時の誤差等によって、
その外周面が中心の軸に対してわずかに偏心したり、軸
に対する周面の平行度がわずかに狂ったり、或いはその
表面にわずかな凹凸ができることは一般に避けられない
。このため、上記のように現像ローラと像担持ドラムを
正しく平行に組み付けようとしてもその精度に限度があ
り、両者を軸方向全体に亘って均一な圧力で圧接させる
ことは困難である。そこで、現像ローラを位置不動に支
持することをやめ、該ローラを位置不動な像担持ドラム
に対して接近又は離隔する方向に移動可能に支持し、ば
ねによって現像ローラを像担持ドラムに圧接させる構成
が提案されている。この構成によれば、現像ローラや像
担持ドラムの周面が多少偏心し、或いは軸に対する周面
の平行度が多少不正確であり、或いは表面に多少の凹凸
があっても両者を均一に圧接させることが可能となる。At this time, in order to improve and stabilize the quality of the visible image formed, it is desirable that the developing roller and the image bearing drum are always pressed against each other with uniform pressure along the axial direction thereof. To make this possible, when assembling the developing roller and image-bearing drum, the two must be placed accurately in parallel and fixedly mounted on the machine body (image forming apparatus body), so that the pressing force between the two is uniform. It is conceivable to make this possible. However, due to manufacturing errors in developing rollers and image bearing drums,
It is generally unavoidable that the outer circumferential surface is slightly eccentric with respect to the central axis, that the parallelism of the circumferential surface with respect to the axis is slightly out of alignment, or that the surface is slightly uneven. For this reason, even if an attempt is made to correctly assemble the developing roller and the image bearing drum in parallel as described above, there is a limit to the accuracy, and it is difficult to press them together with uniform pressure over the entire axial direction. Therefore, instead of supporting the developing roller in an immovable position, the roller is supported so as to be movable toward or away from the immovable image bearing drum, and the developing roller is brought into pressure contact with the image bearing drum by a spring. is proposed. According to this configuration, even if the circumferential surfaces of the developing roller and image bearing drum are slightly eccentric, the parallelism of the circumferential surfaces to the shaft is somewhat inaccurate, or the surfaces have some unevenness, the two can be evenly pressed against each other. It becomes possible to do so.
一方、上述の現像ローラは、その一方の端部側に付設さ
れた例えば歯車より成る伝動部材と、この歯車に噛み合
い、機械本体に位置不動に支持された他の歯車とから成
る伝動装置によって回転駆動されるのが普通であるが、
このように一方の端部側だけから現像ローラに駆動力を
伝えるようにし、しかも前述のように現像ローラを移動
可能に支持すると、両歯車の共通接線の方向から圧力角
だけそれた方向に加わる所謂接線力が現像ローラの駆動
側端部にのみ作用する。このため、現像ローラが像担持
ドラムに対して圧接する圧力が、上記接線力の作用した
現像ローラ端部と他方の端部とで相違し、両者の軸方向
全体に亘る均一な圧接が阻害される恐れがある。On the other hand, the above-mentioned developing roller is rotated by a transmission device consisting of a transmission member, for example, a gear, attached to one end thereof, and another gear that meshes with this gear and is supported immovably on the machine body. Usually driven by
In this way, if the driving force is transmitted to the developing roller from only one end side, and if the developing roller is movably supported as described above, the driving force will be applied in a direction that deviates from the common tangent of both gears by a pressure angle. A so-called tangential force acts only on the drive side end of the developing roller. For this reason, the pressure with which the developing roller comes into pressure contact with the image bearing drum differs between the end of the developing roller where the tangential force acts and the other end, and uniform pressure contact over the entire axial direction of both ends is inhibited. There is a risk of
上述したことは、像担持ドラムより成る第１の回転体に
帯電ローラより成る第２の回転体を圧接させたとき、或
いはオフセット印刷機において、オフセットローラより
成る第１の回転体にインクローラより成る第２の回転体
を圧接させたとき等、各種の機械において生じる事実で
ある。What has been described above occurs when a second rotating body consisting of a charging roller is brought into pressure contact with a first rotating body consisting of an image bearing drum, or when an ink roller is brought into contact with a first rotating body consisting of an offset roller in an offset printing machine. This is a fact that occurs in various machines, such as when a second rotating body made of
■
本発明の目的は、上述の従来の欠点を簡単な構成で除去
できる伝動装置を提供することである。(2) An object of the present invention is to provide a transmission device that can eliminate the above-mentioned conventional drawbacks with a simple structure.
本発明は、上記目的を達成するため、回転駆動される第
１の回転体に対して接近又は離隔する方向に移動可能な
状態で、該回転体に圧接する第２の回転体に駆動装置か
らの回転力を伝える伝動装置において、機械本体に支持
され、駆動装置により回転駆動される第１の伝動部材と
、該伝動部材に係合し、かつ機械本体に対して固定状態
に取付けられた支持部材に位置不動に支持されている第
２の伝動部材と、第２の回転体の前記移動を許容しつつ
、第２の伝動部材の回転を第２の回転体に伝えるシミイ
ンドとを具備することを特徴とする伝動装置を提案する
。In order to achieve the above object, the present invention provides a second rotating body that is in pressure contact with a first rotating body that is movable toward or away from a first rotating body that is rotationally driven, from a drive device. A transmission device that transmits rotational force includes a first transmission member supported by a machine body and rotationally driven by a drive device, and a support that engages with the transmission member and is fixedly attached to the machine body. A second transmission member that is immovably supported by the member, and a shim pin that transmits the rotation of the second transmission member to the second rotation body while allowing the movement of the second rotation body. We propose a transmission device characterized by:
以下、第１の回転体が像担持ドラムの一例である感光体
ドラムとして構成され、第２の回転体が現像ローラより
成る画像形成装置に本発明を適用した実施例を図面に従
って説明し、併せて前述の従来の欠点を図面に即してよ
り具体的に明らかにする。Hereinafter, an embodiment in which the present invention is applied to an image forming apparatus in which the first rotating body is configured as a photosensitive drum, which is an example of an image bearing drum, and the second rotating body is configured as a developing roller will be described with reference to the drawings, and The above-mentioned drawbacks of the conventional technology will be explained in more detail with reference to the drawings.
第１図は電子複写機の要部を示す部分断面概略図であり
、第２図は一部の要素についてその配置状態を変えて示
した第１図の水平断面図である。FIG. 1 is a schematic partial cross-sectional view showing the main parts of an electronic copying machine, and FIG. 2 is a horizontal cross-sectional view of FIG. 1 showing some elements in a different arrangement.
先ずその全体構成と作用を簡単に説明する。First, its overall configuration and operation will be briefly explained.
第１図及び第２図において、感光体ドラム１として構成
された像担持ドラム（第１の回転体）は、その軸２の各
端部が複写機本体の支持部３，３ａに回転自在ではある
が位置不動に支持され、ロックプレート５１によって抜
は出しが阻止されている。感光体ドラム１はその軸２に
固着された図示していないドラム駆動歯車を介して、第
１回における時計方向に回転駆動される。このとき感光
体ドラムの表面は、帯電チャージャ５によって所定の極
性に帯電され１次いでこの帯電表面に図示していない原
稿から光像が結像素子６によって結像され、ドラムの表
面に静電潜像が形成される。In FIGS. 1 and 2, the image bearing drum (first rotating body) configured as a photosensitive drum 1 has each end of its shaft 2 rotatably attached to supporting parts 3 and 3a of the copying machine main body. However, it is supported in an immovable position, and is prevented from being pulled out by a lock plate 51. The photosensitive drum 1 is rotationally driven clockwise in the first rotation via a drum drive gear (not shown) fixed to the shaft 2 thereof. At this time, the surface of the photoreceptor drum is charged to a predetermined polarity by the charging charger 5, and then a light image is formed on this charged surface from a document (not shown) by the imaging element 6, and the surface of the drum is electrostatically charged. An image is formed.
上記静電潜像は現像装置７を通過するときトナーによっ
て可視像化される。現像装置７はトナー粒子のみ、或い
はこれに補助成分を含有した粉状のトナーＴを収容した
トナー容器８と、この容器内のトナーＴを撹拌するアジ
テータ９と、現像ローラ１０と、これにトナーを供給す
るトナー補給ローラ（例えばスポンジローラ）１１とを
有し。When the electrostatic latent image passes through the developing device 7, it is visualized by toner. The developing device 7 includes a toner container 8 containing only toner particles or powdered toner T containing auxiliary components, an agitator 9 for stirring the toner T in this container, a developing roller 10, and a toner container 8 that contains toner particles only or powdered toner T containing auxiliary components. It has a toner replenishing roller (for example, a sponge roller) 11 that supplies toner.
これらの要素９，１０．１１はトナー容器８に回転自在
に支持され、それぞれ第１図に矢印で示す方向に回動駆
動される。These elements 9, 10, 11 are rotatably supported by the toner container 8 and are each driven to rotate in the directions indicated by arrows in FIG.
上述の現像ローラ１０の表面にはトナー補給ローラ１１
によってトナーＴが供給され、該トナーＴはトナー容器
８に固着されたトナー層厚規制ブレード１４によって層
厚を規制され、かつ所定の極性に摩擦帯電される。次い
でこのトナーは感光体ドラム１と現像ローラ１０の圧接
した現像領域に搬送され、ここで感光体ドラム表面の静
電潜像に静電的に移行し、該潜像が可視像化される。A toner supply roller 11 is provided on the surface of the above-mentioned developing roller 10.
The toner T is supplied, the layer thickness of the toner T is regulated by a toner layer thickness regulating blade 14 fixed to the toner container 8, and the toner T is frictionally charged to a predetermined polarity. Next, this toner is conveyed to the development area where the photoreceptor drum 1 and the developing roller 10 are in pressure contact, where it is electrostatically transferred to the electrostatic latent image on the surface of the photoreceptor drum, and the latent image is made visible. .
感光体ドラム１上の可視像は、転写チャージャ１５によ
って、ドラム１に給送された転写材（例えば普通紙）１
６に転写され、転写された可視像は図示していない定着
装置によって転写材上に定着される。A visible image on the photosensitive drum 1 is transferred to a transfer material (for example, plain paper) 1 fed to the drum 1 by a transfer charger 15.
6, and the transferred visible image is fixed onto the transfer material by a fixing device (not shown).
可視像転写後の感光体表面は、クリーニング装置１７の
クリーニングブレード１８によって残留トナーを除去さ
れ１図示していない除電装置によって除電作用を受ける
。After the visible image has been transferred, residual toner is removed from the surface of the photoreceptor by a cleaning blade 18 of a cleaning device 17, and a charge is removed by a charge remover (not shown).
上述した複写動作自体は一般の複写機と変るところはな
く、感光体ドラム１に圧接した現像ローラ１０によって
接触現像が行われることも従来通りである。この場合、
前述のように可視像の画質を高め、かつそれを安定化さ
せるには感光体ドラム１と現像ローラ１ｏをその軸方向
（即ち第２図における上下の方向）の全体に亘ってでき
るだけ均一な圧力で圧接させる必要がある。第３図は、
感光体ドラム１と現像ローラ１０との接触圧力と、ドラ
ム１上に形成される可視像の濃度ＩＤの関係の一例を示
すグラフである。これから判るように、可視像の濃度を
所定の値ＩＤ工以上に保つには、現像ローラ１０と感光
体ドラム１をその軸方向全体に亘ってその濃度に対応し
た所定範囲の圧力で圧接させなければならない。この範
囲の圧力よりも低く、又は高い圧接部分ができれば、こ
の部分で形成された可視像部分に白抜けができたり、ト
ナーが付着しない画像欠けが発生し、また地肌汚れが発
生する恐れもある。このように接触現像においては、感
光体ドラム１と現像ローラ１０の接触圧力を軸方向に亘
ってできるだけ一定に保つべく、これをコントロールす
ることは重要な技術課題である。このような目的で前述
のように、感光体ドラムと現像ローラを正確に平行に配
置してこれらを機械本体（本例では複写機本体）に位置
不動に組付けることが考えられるが、かかる構成を採用
しても、感光体ドラムと現像ローラの表面の不正確さ、
即ちその外周面の偏心、平行度の狂い、或いは第４図に
誇張して示したように現像ローラ１０の表面の凹凸によ
る真円度の狂い等によって、両者を均一に圧接させるこ
とは難しい。そこで先にも説明した如く、現像ローラを
位置不動に支持する構成に代え、該ローラを感光体ドラ
ムに対して移動可能に支持し、このローラを伝動装置を
介して回転駆動する構成が提案されている。本発明の理
解のため、その−例を図面を参照して明らかにしておく
。The above-described copying operation itself is no different from that of a general copying machine, and contact development is performed by the developing roller 10 in pressure contact with the photosensitive drum 1, as is conventional. in this case,
As mentioned above, in order to improve the quality of the visible image and to stabilize it, the photoreceptor drum 1 and the developing roller 1o are made as uniform as possible over the entire axial direction (that is, the vertical direction in FIG. 2). It is necessary to apply pressure. Figure 3 shows
7 is a graph showing an example of the relationship between the contact pressure between the photosensitive drum 1 and the developing roller 10 and the density ID of the visible image formed on the drum 1. FIG. As can be seen from this, in order to maintain the density of the visible image above a predetermined value ID, the developing roller 10 and the photoreceptor drum 1 are pressed together in the entire axial direction with a pressure within a predetermined range corresponding to the density. There must be. If a pressure-contact area is formed that is lower or higher than the pressure in this range, white spots may appear in the visible image formed in this area, image defects may occur where toner does not adhere, and there is a risk that background stains may occur. be. As described above, in contact development, it is an important technical issue to control the contact pressure between the photosensitive drum 1 and the developing roller 10 in order to keep it as constant as possible in the axial direction. For this purpose, as described above, it is conceivable to arrange the photosensitive drum and the developing roller accurately in parallel and to assemble them into the main body of the machine (in this example, the main body of the copying machine) in an immovable manner. However, the surface inaccuracy of the photoreceptor drum and developing roller
That is, it is difficult to uniformly press the two together due to eccentricity of the outer circumferential surface, irregularity in parallelism, or irregularity in roundness due to irregularities on the surface of the developing roller 10, as shown exaggerated in FIG. Therefore, as explained above, instead of the structure in which the developing roller is immovably supported, a structure has been proposed in which the roller is movably supported with respect to the photoreceptor drum, and this roller is rotationally driven via a transmission device. ing. In order to understand the present invention, examples thereof will be explained with reference to the drawings.
第１４図及び第１５図において、感光体ドラム１は複写
機本体の支持部に回転可能ではあるが位置不動に支持さ
れている。一方、現像装置７はそのトナー容器８がピン
２０を介して複写機本体の機枠に回動可能に支持され、
しかも圧縮ばね２１゜２２によって感光体ドラム１に向
けて付勢されている。このためトナー容器８に回転自在
に支持された現像ローラ１０も感光体ドラム１に対して
接近又は離隔する方向に揺動可能であり、ばね２１゜２
２の作用でその表面が感光体ドラム１の表面に圧接する
。このように現像ローラ１０が感光体ドラム１に対して
弾性的に圧接するので、現像ローラ１０や感光体ドラム
１の周面がその各軸２，１２に対して多少偏心し、或い
は軸２，１２に対する周面の平行度が多少不正確であっ
ても、又は第４図のように現像ローラの真円度が多少狂
っていても、両者はその軸線方向全体に均一な圧力で圧
接することが可能となる。ところが、現像ローラ１０は
その一方の軸端部に固着された駆動歯車１３と、これに
噛み合う他の歯車２３（第１４図）より成る伝動装置を
介して駆動されるので、現像ローラ１０はこの能動側に
のみ力Ｆを受ける。即ち、複写機本体側に回転自在に支
持された歯車２３が、第１４図のように時計方向に回転
し、この回転が現像ローラの軸１２に固着された歯車１
３に伝えられてこれが反時計方向に駆動されるとすると
、この歯車１３にはその相手歯車２３から、その共通接
線方向よりギアの圧力角分だけそれた方向の力Ｆを受け
る。この力を先にも示したように接線力と称することに
すると、複写機本体に対して揺動可能に支持された現像
ローラ１０に接線力Ｆが作用すれば、該ローラ１０は感
光体ドラム１から離れる向きに付勢される。一方、現像
ローラ１０の軸１２の他方の端部には駆動力が加わらな
いため、上述の如き接線力Ｆが作用することはない。し
たがって現像ローラ１０はその一方の端部側にだけ接線
力Ｆを受けることになり、これによって該ローラ１０が
感光体ドラム１に対してその全長に亘って均一な圧力で
接することが阻害される恐れを生じる。In FIGS. 14 and 15, the photosensitive drum 1 is rotatably but immovably supported by a support portion of the main body of the copying machine. On the other hand, the toner container 8 of the developing device 7 is rotatably supported by the machine frame of the copying machine main body via a pin 20.
Moreover, it is biased toward the photosensitive drum 1 by compression springs 21 and 22. Therefore, the developing roller 10 rotatably supported by the toner container 8 is also swingable in the direction toward or away from the photosensitive drum 1, and the spring 21.degree.
2, its surface comes into pressure contact with the surface of the photosensitive drum 1. Since the developing roller 10 is in elastic pressure contact with the photoreceptor drum 1 in this way, the circumferential surfaces of the developing roller 10 and the photoreceptor drum 1 are slightly eccentric with respect to their respective shafts 2 and 12, or the shafts 2, Even if the parallelism of the circumferential surface to 12 is somewhat inaccurate, or even if the roundness of the developing roller is slightly out of order as shown in Figure 4, the two will be pressed against each other with uniform pressure in the entire axial direction. becomes possible. However, since the developing roller 10 is driven via a transmission device consisting of a driving gear 13 fixed to one shaft end and another gear 23 (FIG. 14) meshing with the driving gear 13, the developing roller 10 is Only the active side receives force F. That is, the gear 23 rotatably supported on the copying machine body side rotates clockwise as shown in FIG. 14, and this rotation causes the gear 1 fixed to the shaft 12 of the developing roller to rotate clockwise.
3 and drives it counterclockwise, this gear 13 receives a force F from its mating gear 23 in a direction deviating from its common tangential direction by the pressure angle of the gear. If this force is referred to as a tangential force as shown above, if a tangential force F acts on the developing roller 10, which is swingably supported with respect to the copying machine main body, the roller 10 will move toward the photoreceptor drum. is biased away from 1. On the other hand, since no driving force is applied to the other end of the shaft 12 of the developing roller 10, the tangential force F as described above does not act thereon. Therefore, the developing roller 10 receives the tangential force F only on one end thereof, which prevents the roller 10 from contacting the photosensitive drum 1 with uniform pressure over its entire length. cause fear.
上述した例では接線力Ｆが現像ローラ１０を感光体ドラ
ム１から離す方向に作用しているが、両歯車１３．２３
の噛み合い位置、或いは現像ローラ１０の回転方向いか
んによっては、現像ローラ１０が感光体ドラム１に向け
て付勢される向きの接線力が作用することもある。In the above example, the tangential force F acts in the direction of separating the developing roller 10 from the photoreceptor drum 1, but both gears 13 and 23
Depending on the meshing position of the developing roller 10 or the rotating direction of the developing roller 10, a tangential force may act in a direction that urges the developing roller 10 toward the photoreceptor drum 1.
なお、第１４図のように現像ローラ１０の軸中心と同心
状に歯車１３を配置し、その外周の歯に複写機本体に支
持された歯車２３を噛み合せる理由の１つは、現像装置
７を現像ローラ１０の軸方向に直交する方向、例えば矢
印Ａで示すように上下の方向に取付け、又は着脱できる
ようにするためである。両歯車１３．２３を第１４図に
例示する如く配置しておけば、現像装置７の矢印Ａ方向
への取付け、又は着脱時に、両歯車１３．２３は簡単に
係合又は離脱できるからである。ところがこのように歯
車１３．２３を配置すると、上記の如く現像装置の取付
性ないしは着脱性がよくなる反面、前述のように接線力
Ｆが作用して、現像ローラと感光体ドラムの均一な圧接
が害される恐れを生じるのである。Incidentally, one of the reasons why the gear 13 is arranged concentrically with the axial center of the developing roller 10 as shown in FIG. This is so that the developing roller 10 can be attached or detached in a direction perpendicular to the axial direction of the developing roller 10, for example, in an up-down direction as shown by arrow A. This is because if both gears 13.23 are arranged as illustrated in FIG. 14, both gears 13.23 can be easily engaged or disengaged when the developing device 7 is attached or detached in the direction of arrow A. . However, when the gears 13 and 23 are arranged in this way, although the ease of attaching and detaching the developing device is improved as described above, the tangential force F acts as described above, and the uniform pressure contact between the developing roller and the photoreceptor drum is prevented. This creates a fear of being harmed.
上述した不具合を除去するため、現像ローラ１０の駆動
側、即ち歯車１３が設けられた方の端部側を押圧するば
ね２２と、他方の端部側を押圧するばね２１のばね力を
変えることも考えられる。In order to eliminate the above-mentioned problems, it is necessary to change the spring force of the spring 22 that presses the drive side of the developing roller 10, that is, the end side where the gear 13 is provided, and the spring 21 that presses the other end side. can also be considered.
即ち、第１４図のような向きに接線力Ｆが作用するとき
は、ばね２２のばね力を、他方のばね２１のばね力より
も強め、現像ローラ１０が感光体ドラム１に対して均一
に圧接できるようにするのである。ところがこのように
すると、各ばね２１゜２２の適正なばね力が、各現像装
置やその伝動装置の製造上のばらつき等によって多少変
動するので、各現像装置毎にばね力を適正値に設定しな
ければならず大変類しい。また各ばね２１．２２のばね
力を正しく設定したとしても、感光体ドラム１や現像ロ
ーラ１０の経時的な表面摩耗により、或いは温度変化等
の環境変化によって接線力Ｆが変化するので、現像ロー
ラと感光体ドラムとの均−な圧接を常に維持することは
困難である。またそれまで使用していた現像装置を取外
し、別の現像装置を装着した場合、前の現像装置に対す
るばね２１，２２の適正なばね力と、新たに装着した現
像装置に対する適正なばね力が相違すれば、改めてばね
２１，２２のばね力の調整を行わなければならない。That is, when the tangential force F acts in the direction as shown in FIG. This allows for pressure welding. However, when doing this, the appropriate spring force for each spring 21 and 22 varies somewhat due to manufacturing variations in each developing device and its transmission device, so the spring force must be set to an appropriate value for each developing device. It has to be very similar. Furthermore, even if the spring force of each spring 21, 22 is set correctly, the tangential force F changes due to surface wear of the photoreceptor drum 1 and the developing roller 10 over time, or due to environmental changes such as temperature changes. It is difficult to always maintain uniform pressure contact between the photosensitive drum and the photosensitive drum. Also, when the previously used developing device is removed and another developing device is installed, the appropriate spring force of the springs 21 and 22 for the previous developing device is different from the appropriate spring force for the newly installed developing device. In this case, the spring force of the springs 21 and 22 must be adjusted again.
そこで、複写機本体に支持された歯車２３を、そのピッ
チ円が第１６図に示すようにトナー容器８用のピン２０
の中心に位置するように配置し、現像装置７の側に回転
自在に支持された適数の中間歯車１３ａ、１３ｂを介し
て、上記歯車２３を現像ローラ１０に固定された歯車１
３に駆動連結する方法が考えられる。このようにすれば
、歯車２３から加えられる接線力Ｆがトナー容器８．し
たがって現像ローラ１０を回転させようとするモーメン
トとして作用せず、接線力Ｆが前述のような不具合をも
たらすことはない。Therefore, the gear 23 supported on the main body of the copying machine is moved so that its pitch circle is aligned with the pin 23 for the toner container 8, as shown in FIG.
The gear 23 is fixed to the developing roller 10 via an appropriate number of intermediate gears 13a and 13b which are rotatably supported on the side of the developing device 7.
A possible method is to connect the drive to 3. In this way, the tangential force F applied from the gear 23 is applied to the toner container 8. Therefore, the tangential force F does not act as a moment to rotate the developing roller 10, and the tangential force F does not cause the above-mentioned problems.
或いは、複写機本体に支持された歯車を第１６図に符号
１２３を付して示す如く配置して、これによる接線力Ｆ
′の向きがピン２０の中心を通るようにし、接線力Ｆ′
が現像ローラ１ｏに対するモーメントとして作用しない
ようにしても、上述したところと同じ結果が得られる。Alternatively, by arranging the gear supported by the copying machine body as shown with reference numeral 123 in FIG. 16, the resulting tangential force F can be
′ passes through the center of the pin 20, and the tangential force F′
The same result as described above can be obtained even if it is made so that the torque does not act as a moment on the developing roller 1o.
ところがこれらの構成によると、歯車２３，１２３を配
置する個所が制約され、複写機の設計自由度が大幅に狭
められる。また現像装置７の取付け、又はその着脱方向
も大きく制約され、例えば歯車２３を第１６図の位置に
配置すれば、現像装置７を上下の方向Ａに取付け、又は
着脱できるように構成することは歯車２３が邪魔となる
ため困難ないしは不可能である。However, according to these configurations, the locations where the gears 23 and 123 are arranged are restricted, and the degree of freedom in designing the copying machine is greatly reduced. Furthermore, the mounting direction of the developing device 7 and its mounting/detaching direction are also greatly restricted. For example, if the gear 23 is placed in the position shown in FIG. This is difficult or impossible because the gear 23 gets in the way.
そこで第１図及び第２図に示した本発明実施例において
は、現像装置７のトナー容器８が、着脱可能な保持部材
３０によって複写機本体の機枠に固定状態に支持され、
現像ローラ１０の軸１２の各端部が、トナー容器８の各
側板３１，３１ａに形成された長孔３２．３２ａに嵌合
している。より詳しく言えば、軸１２の各端部を回転自
在に支持し、それ自体は回転しない軸受３３，３３ａが
。Therefore, in the embodiment of the present invention shown in FIGS. 1 and 2, the toner container 8 of the developing device 7 is fixedly supported on the frame of the copying machine body by a detachable holding member 30.
Each end of the shaft 12 of the developing roller 10 is fitted into an elongated hole 32 , 32 a formed in each side plate 31 , 31 a of the toner container 8 . More specifically, the bearings 33, 33a rotatably support each end of the shaft 12 and do not rotate themselves.
長孔３２，３２ａにその長径方向に摺動自在に嵌合して
いる。It is fitted into the long holes 32, 32a so as to be slidable in the long diameter direction thereof.
長孔３２，３２ａは第１図から明らかなように、感光体
ドラム１の法線Ｎ方向に長く形成され、したがって現像
ローラ１０は感光体ドラム１に対して接近又は離隔する
方向に作動可能である。この状態で軸受３３，３３ａと
トナー容器８のばね受け３４，３４ａの間に配置された
圧縮ばね３５゜３５ａによって、現像ローラ１０は感光
体ドラへ１に圧接している。２つのばね３５．３５ａの
ばね力は同じ大きさに設定され、現像ローラ１０はその
各端部側にて同じばね力を与えられている。As is clear from FIG. 1, the elongated holes 32 and 32a are formed long in the direction of the normal line N to the photoreceptor drum 1, so that the developing roller 10 can be moved toward or away from the photoreceptor drum 1. be. In this state, the developing roller 10 is pressed against the photoreceptor drum 1 by the compression spring 35° 35a disposed between the bearings 33, 33a and the spring receivers 34, 34a of the toner container 8. The spring forces of the two springs 35, 35a are set to the same magnitude, and the developing roller 10 is given the same spring force at each end thereof.
３６．３６ａはトナー容器８のトナー収容部から、長孔
３２，３２ａを通して外部にトナーが漏出することを阻
止するシールであり、これらのシール３２．３２ａは、
例えばゴムや発泡体管の弾性体から成り、長孔３２，３
２ａ中の軸受３３，３３ａの動きを安定化させる働きも
なす。36.36a are seals that prevent the toner from leaking out from the toner storage portion of the toner container 8 through the long holes 32, 32a, and these seals 32.32a are
For example, it is made of an elastic body such as rubber or a foam tube, and has long holes 32,3.
It also serves to stabilize the movement of the bearings 33, 33a in 2a.
現像ローラ９に回転力を伝達する伝動装置は次のように
構成されている。The transmission device that transmits rotational force to the developing roller 9 is constructed as follows.
駆動モータ３７から成る駆動装置は複写機本体の機枠３
８に固定され、その出力軸に第１の歯車３９が固着され
ている。′一方、現像装置７のトナー容器８には第１の
歯車３９に噛み合う第２の歯車４０が回転自在ではある
が位置不動に支持されており、このときトナー容器８は
前述のように複写機本体に対して不動であるため、第２
の歯車４０も複写機本体に対して位置不動である。なお
、第２図では図を判りやすくするため、第１の歯車３９
を第１図に示した位置からほぼ９０°ずらした状態で示
しである。A drive device consisting of a drive motor 37 is mounted on the machine frame 3 of the copying machine main body.
8, and a first gear 39 is fixed to its output shaft. 'On the other hand, a second gear 40 meshing with the first gear 39 is rotatably but immovably supported in the toner container 8 of the developing device 7, and at this time, the toner container 8 is attached to the copying machine as described above. Because it is immobile relative to the main body, the second
The gear 40 is also stationary relative to the main body of the copying machine. In addition, in FIG. 2, the first gear 39 is
is shown shifted approximately 90° from the position shown in FIG.
第２の歯車４０は、現像ローラ１０とほぼ同心状に位置
しているが、現像ローラ１０が長孔３２゜３２ａに沿っ
て動くことにより、両者の軸心位置は多少ずれ動く。第
２の歯車４ｏと現像ローラ１０の軸１２は、ジヨイント
４１を介して連結されており、このジヨイント４１は現
像ローラ１０の。The second gear 40 is located substantially concentrically with the developing roller 10, but as the developing roller 10 moves along the elongated hole 32.degree. 32a, the axes of the two gears shift slightly. The second gear 4o and the shaft 12 of the developing roller 10 are connected via a joint 41, and this joint 41 is connected to the shaft 12 of the developing roller 10.
長孔３２，３２ａに沿う作動を許容しつつ、第２の歯車
４０の回転を現像ローラ１０の軸１２に伝える働きをな
すものである。ジヨイント４１としては、例えばユニバ
ーサルジヨイント、第２図の例ではオルダム継手が用い
られている。オルダム継手から成るジヨイント４１は、
その第１の円板４１ａが第２の歯車４０に一体的に連結
され、第２の円板４１ｂが現像ローラ１０の軸１２に固
定されていて、両日板４１ａ、４１ｂの間に第３の円板
４１ｃが配置されている。第３の円板４１ｃの各面には
周知のように、互いに９０”の角度をなして交差してい
る突条（図示せず）がそれぞれ形成され、その両側の各
円板４１ａ、４１ｂに形成された溝（図示せず）に摺動
自在に嵌合している。It functions to transmit the rotation of the second gear 40 to the shaft 12 of the developing roller 10 while allowing operation along the long holes 32 and 32a. As the joint 41, for example, a universal joint is used, and in the example shown in FIG. 2, an Oldham joint is used. The joint 41 made of Oldham joint is
The first disk 41a is integrally connected to the second gear 40, the second disk 41b is fixed to the shaft 12 of the developing roller 10, and a third disk is connected between the two plates 41a and 41b. A disk 41c is arranged. As is well known, protrusions (not shown) are formed on each surface of the third disc 41c and intersect with each other at an angle of 90''. It is slidably fitted into a formed groove (not shown).
駆動モータ３７が作動することによって、第１の歯車３
９が第１図の時計方向に回転駆動され。When the drive motor 37 operates, the first gear 3
9 is rotated clockwise in FIG.
これに噛み合った第２の歯車４０が第１図における反時
計方向に駆動される。この回転はジヨイント４１を介し
て現像ローラ１０に伝えられ、該ローラ１０が反時計方
向に回転して前述の現像動作が行われる。このとき、第
２の歯車４０には、第１の歯車３９から、第１４図を参
照して先に詳しく説明したように接線力Ｆが作用する。The second gear 40 meshed with this gear is driven counterclockwise in FIG. This rotation is transmitted to the developing roller 10 via the joint 41, and the roller 10 rotates counterclockwise to perform the above-described developing operation. At this time, the tangential force F acts on the second gear 40 from the first gear 39, as described in detail above with reference to FIG.
このとき。At this time.
第２の歯車４０は複写機本体に対して位置不動であるた
め、この歯車４０に加えられた接線力Ｆは、複写機本体
に対して不動なトナー容器８を介して複写機本体に受は
止められる。しかも現像ローラ１０には第２の歯車４０
からジヨイント４１を介してその回転トルクだけが伝え
られるので、現像ローラ９に接線力Ｆが作用することは
ない。したがって現像ローラ１０に、その一方の端部側
だけから駆動力が入力されても、第１４図及び第１５図
に示した従来例のように、接線力Ｆによって感光体ドラ
ム１に対する現像ローラ１０の圧接力が、一方の端部側
で弱まり、又は強まるような不都合は発生しない。また
接線力Ｆが何ら問題とならないため、現像ローラ１０へ
のトルクが経時的に多少変動し、これにより接線力Ｆが
変っても現像ローラ１０と感光体ドラム１との圧接力の
均一さを保つ上で問題となることはない。Since the second gear 40 is stationary relative to the copying machine main body, the tangential force F applied to this gear 40 is not received by the copying machine main body via the toner container 8, which is fixed relative to the copying machine main body. It can be stopped. Moreover, the developing roller 10 has a second gear 40.
Since only the rotational torque is transmitted from the developing roller 9 through the joint 41, no tangential force F acts on the developing roller 9. Therefore, even if a driving force is input to the developing roller 10 from only one end side, the developing roller 10 is applied to the photoreceptor drum 1 by the tangential force F, as in the conventional example shown in FIGS. 14 and 15. There is no problem in which the pressure contact force becomes weaker or stronger on one end side. In addition, since the tangential force F does not pose any problem, the torque applied to the developing roller 10 varies somewhat over time, and even if the tangential force F changes, the uniformity of the pressure contact force between the developing roller 10 and the photoreceptor drum 1 cannot be maintained. There is no problem in maintaining it.
しかも現像ローラ１０は感光体ドラム１に対して移動可
能な状態で、各ばね３５．３５ａによって同一のばね力
で弾性的にドラム１の周面に押圧されているため、現像
ローラ１０と感光体ドラム１に、周面の偏心や平行度な
いしは真円度の狂いが多少あっても、両者はその軸方向
全体に亘って常時均一ないしはほぼ均一な圧力で接触し
、常に安定した高品質な可視像を形成することができる
。Moreover, since the developing roller 10 is movable relative to the photoreceptor drum 1 and is elastically pressed against the circumferential surface of the drum 1 by each spring 35, 35a with the same spring force, the developing roller 10 and the photoreceptor Even if the drum 1 has some degree of eccentricity, parallelism, or out-of-roundness on its circumferential surface, the two will always be in contact with uniform or almost uniform pressure over the entire axial direction, resulting in a stable and high-quality product. Visual images can be formed.
また現像ローラ１０又は感光体ドラム１の偏心等によっ
て、現像ローラ１０の回転軸心が感光体ドラム１の法線
Ｎ方向に振れ動いても、ジヨイント４１の働きによって
、現像ローラ１０を支障なく回転させることができる。Furthermore, even if the rotation axis of the developing roller 10 swings in the direction of the normal line N to the photosensitive drum 1 due to eccentricity of the developing roller 10 or the photosensitive drum 1, the joint 41 allows the developing roller 10 to rotate without any trouble. can be done.
感光体ドラム１と現像ローラ１０の均一な圧接を一層高
めるため、現像ローラ１０とドラム１の一方又は双方の
少なくとも表面部分が弾性変形できるように構成するこ
とも有利であるが、両者を共に剛体により構成したとき
も、上述した理由によってその均一な圧接を保証するこ
とができる。In order to further increase the uniform pressure contact between the photosensitive drum 1 and the developing roller 10, it is advantageous to configure at least the surface portion of one or both of the developing roller 10 and the drum 1 to be elastically deformable. Even when configured as follows, uniform pressure contact can be guaranteed for the above-mentioned reasons.
上述した構成によれば、トナー容器８を第１４図のよう
に揺動可能に支持し、かっばね２１，２２を設け、その
ばね力をそれぞれ異らせる如き煩雑さを除去でき、長期
に亘って現像ローラを感光体ドラムに均一に圧接させる
ことが可能である。According to the above-mentioned structure, it is possible to support the toner container 8 in a swingable manner as shown in FIG. The developing roller can be brought into uniform pressure contact with the photoreceptor drum.
第１図及び第２図に示した現像装置７は、保持部材３０
を取り外した状態で、該装置７の組付時にこれを複写機
本体に取付け、又は現像装置７の交換等の目的で、これ
を複写機本体に対して着脱できるように構成されている
。この場合、現像装置７を複写機本体から取外すとき、
第２の歯車４０は現像装置７と共に外されるが、第１の
歯車３９は複写機本体に残され、両歯車３９．４０はそ
の噛み合い点Ｇで分離される。その際、従来のように接
線力Ｆについて特に考慮する必要がないため、第１の歯
車３９の配置個所を、図示した位置に限らず自由に設定
でき、第１６図の歯車２３゜１２３のように配設個所を
制限されない。したがって、両歯車３９．４０の噛み合
い点Ｇの位置も自由に設定できることとなり、これに伴
って、現像装置の取付け、又はその着脱方向を実質的に
自由に設定することが可能となる。例えば、第１図に示
した位置に第１の歯車３９を配置すれば、現像装置７を
上下の方向Ａに着脱できるように構成できる。のみなら
ず、この歯車３９の配設個所を適宜設定することによっ
て、その他の方向、例えば第１図の左右方向Ｂに現像装
置７を着脱できるように構成することも可能である。こ
のように現像装置７の組付時、ないしは着脱時の作業性
を高め得るように、複写機を構成することが可能である
。The developing device 7 shown in FIGS. 1 and 2 has a holding member 30
It is configured such that it can be attached to and removed from the copying machine main body for the purpose of attaching it to the copying machine main body when the device 7 is assembled or replacing the developing device 7 in a detached state. In this case, when removing the developing device 7 from the copying machine main body,
The second gear 40 is removed together with the developing device 7, but the first gear 39 remains in the copying machine body, and the two gears 39, 40 are separated at their meshing point G. At this time, there is no need to take into account the tangential force F as in the conventional case, so the first gear 39 can be placed at any position other than the one shown, such as the gear 23° 123 in Fig. 16. There are no restrictions on where it can be installed. Therefore, the position of the meshing point G of both gears 39 and 40 can be freely set, and accordingly, the mounting of the developing device and the direction of its mounting and dismounting can be set substantially freely. For example, by arranging the first gear 39 at the position shown in FIG. 1, the developing device 7 can be configured to be detachable in the vertical direction A. In addition, by appropriately setting the location of this gear 39, it is also possible to configure the developing device 7 so that it can be attached and detached in other directions, for example, in the left-right direction B in FIG. In this way, it is possible to configure the copying machine so that the workability when assembling or removing the developing device 7 can be improved.
第１の歯車３９の配設個所を自由に定めることができる
ことは、複写機全体の設計自由度を高め得ることをも意
味する。Being able to freely determine the location of the first gear 39 also means that the degree of freedom in designing the entire copying machine can be increased.
また第１図及び第２図に示した構成でばばね３５．３５
ａが現像装置７に予め組込まれているため、現像装置７
の取付毎にばねを取付ける必要もなく、その取付作業が
簡単となる。Also, in the configuration shown in Figures 1 and 2, the spring 35.35
a is installed in the developing device 7 in advance, so the developing device 7
There is no need to install a spring every time the spring is installed, which simplifies the installation work.
但し、複写機本体と、現像ローラ（例えば第２図のよう
に現像ローラの軸受）との間にばねを設け、複写機本体
側から現像ローラに圧力が加わるように構成してもよい
。この場合も、現像装置の複写機本体へのセットと連動
して、ばねもセットできるように構成すると、その都度
ばねを取付ける煩雑さを除去でき都合がよい。例えば、
複写機本体の蓋にばねを設けておき、現像装置を複写機
本体にセットして蓋を閉じると、これに伴って、蓋と現
像ローラ側との間にばねがセットされ、該ローラを加圧
するように構成する。これらのことは、後述する実施例
にも適用できることは当然である。However, a spring may be provided between the copying machine main body and the developing roller (for example, a bearing of the developing roller as shown in FIG. 2), so that pressure is applied to the developing roller from the copying machine main body side. In this case as well, it is advantageous to configure the spring so that it can be set in conjunction with the setting of the developing device in the main body of the copying machine, as this eliminates the trouble of installing the spring each time. for example,
A spring is provided on the lid of the copying machine body, and when the developing device is set in the copying machine body and the lid is closed, a spring is set between the lid and the developing roller side, and the roller is applied. It is configured to press. Naturally, these matters can also be applied to the embodiments described later.
なお、第２図に示した構成を一部変更し、例えば、複写
機本体に固定された駆動モータ３７の出力軸を現像ロー
ラ１０とほぼ同心状に配置し、該出力軸を直接ジヨイン
ト４１を介して現像ローラ１ｏに連結し、接線力が元々
作用しないように構成しても、現像ローラと感光体ドラ
ムを均一に圧接させることが可能である。或いは複写機
本体に固定された駆動モータ３７の第１の歯車３９に噛
み合う第２の歯車を複写機本体側に位置不動に支持して
も同様である。ところが、これらの構成の場合には、現
像装置の取付け、又はその着脱時に、例えばジヨイント
の部分にて現像装置と複写機本体側を現像ローラの軸方
向に接離させる必要があるため、現像装置を第１図に矢
印Ａで示した上下の方向に着脱させることはできず、第
１図の紙面に対して垂直な方向にスライドさせて着脱し
なければない。したがって、現像装置７の組付は又はそ
の着脱の方向に大きな制約を受けることになる。Note that the configuration shown in FIG. 2 may be partially changed, for example, by arranging the output shaft of the drive motor 37 fixed to the copying machine main body almost concentrically with the developing roller 10, and directly connecting the output shaft to the joint 41. Even if the developing roller 1o is connected to the developing roller 1o through a structure such that no tangential force is originally applied, it is possible to uniformly press the developing roller and the photoreceptor drum into contact with each other. Alternatively, the same effect can be obtained by supporting the second gear, which meshes with the first gear 39 of the drive motor 37 fixed to the copying machine main body, in a fixed position on the copying machine main body side. However, in the case of these configurations, when installing or removing the developing device, it is necessary to bring the developing device and the copying machine main body toward and away from each other in the axial direction of the developing roller, for example at the joint. cannot be attached or detached in the vertical direction shown by arrow A in FIG. 1, but must be attached or detached by sliding in a direction perpendicular to the paper plane of FIG. Therefore, the direction in which the developing device 7 can be assembled or removed is subject to significant restrictions.
その点、第１図及び第２図に示した本発明実施例の構成
では、現像装置７を前述のように例えばＡ。In this respect, in the configuration of the embodiment of the present invention shown in FIGS. 1 and 2, the developing device 7 is, for example, A as described above.
Ｂ方向の他、第１図の紙面に対して垂直な方向、或いは
その他の適宜な方向に着脱できるように構成することが
でき設計自由度を大幅に高めることができる。In addition to the B direction, it can be constructed so that it can be attached and detached in a direction perpendicular to the paper plane of FIG. 1, or in any other suitable direction, and the degree of freedom in design can be greatly increased.
ところで現像ローラ５がその作動時に法線Ｎ方向に振れ
動くと、これに接触するトナー供給ローラ１１やトナー
層厚規制ブレード１４と、現像ローラ１ｏとの接触状態
が多少変動するが、これが可視像を形成する上で不利と
なるときは、トナー補給ローラ１１とブレード１４を現
像ローラ１０と一体に（又は別々に）作動させ、現像ロ
ーラ５とこれに接する供給ローラ１１やブレード１４と
の相対位置を一定に保ち得るように構成するとよい。第
５図及び第６図はトナー補給ローラ１１とトナー層厚規
制ブレード１４を、現像ローラ１゜と共に感光体ドラム
１に対して接近又は離隔できるように構成した具体例を
示す。第１図及び第２図に示した実施例と異なるところ
を中心として説明する。By the way, when the developing roller 5 swings in the direction of the normal line N during its operation, the state of contact between the developing roller 1o and the toner supply roller 11 and the toner layer thickness regulating blade 14 that are in contact with it changes somewhat, but this is visible. When it is disadvantageous to form an image, the toner replenishing roller 11 and blade 14 are operated together with the developing roller 10 (or separately), and the relative relationship between the developing roller 5 and the supplying roller 11 and the blade 14 in contact therewith is adjusted. It is preferable to configure it so that the position can be kept constant. FIGS. 5 and 6 show a specific example in which the toner replenishing roller 11 and the toner layer thickness regulating blade 14 can be moved toward or away from the photosensitive drum 1 together with the developing roller 1°. The explanation will focus on the differences from the embodiment shown in FIGS. 1 and 2.
第５図及び第６図において、現像ローラ１０の軸１２に
は第３の歯車８ｏが一体に固定され、この歯車８０と第
２の歯車４０との間にオルダム継手より成るジヨイント
４１が第２図のジヨイント４１と全く同様にして配置さ
れている。即ち、第１の円板４１ａが第２の歯車４０に
固定され、第２の円板４１ｂが第３の歯車８０ないしは
軸１２に固定され、これらの円板の間に第３の円板４１
Ｃが配置されている。5 and 6, a third gear 8o is integrally fixed to the shaft 12 of the developing roller 10, and a joint 41 made of an Oldham joint is connected between this gear 80 and the second gear 40. It is arranged in exactly the same manner as the joint 41 in the figure. That is, the first disc 41a is fixed to the second gear 40, the second disc 41b is fixed to the third gear 80 or the shaft 12, and the third disc 41 is fixed between these discs.
C is placed.
現像ローラ１０の軸１２は第２図の場合と同じく、トナ
ー容器８の側板３１，３１ａに形成された長孔３２，３
２ａに軸受３３，３３ａを介して長孔の長手方向に移動
可能に支持されているが。As in the case of FIG.
2a via bearings 33, 33a so as to be movable in the longitudinal direction of the elongated hole.
トナー補給ローラ１１もその軸８１の各端部が側板３１
，３１ａに形成された長孔８２，８２ａに軸受８３，８
３ａを介して現像ローラ１０と同じ方向に移動可能に支
持されている。また現像ローラ１０の軸１２とトナー補
給ローラ１１の軸８１の各端部は、枢ピン８４，８４ａ
を介してトナー容器８に矢印Ｘ方向に回動自在に支持さ
れた回動連結板８５，８５ａを貫通している。この場合
。The toner supply roller 11 also has each end of its shaft 81 connected to the side plate 31.
, 31a are formed in long holes 82, 82a.
It is supported so as to be movable in the same direction as the developing roller 10 via 3a. Further, each end of the shaft 12 of the developing roller 10 and the shaft 81 of the toner replenishing roller 11 is connected to a pivot pin 84, 84a.
It passes through rotary connecting plates 85 and 85a which are rotatably supported by the toner container 8 in the direction of the arrow X. in this case.
各軸１２，８１は、その軸受３３，３３ａ：８３゜８３
ａを介して各連結板８５，８５ａに対し回転自在ではあ
るが、連結板８５，８５ａに対する相対移動はできない
ように支持され、したがって現像ローラ１０に対するト
ナー補給ローラ１１の相対位置は一定に保たれ、かかる
状態で補給ローラ１１が現像ローラ１ｏに圧接している
。Each shaft 12, 81 has its bearing 33, 33a: 83°83
Although the toner replenishing roller 11 is rotatable relative to the connecting plates 85 and 85a via the connecting plates 85 and 85a, it is supported so that it cannot move relative to the connecting plates 85 and 85a, and therefore the relative position of the toner replenishing roller 11 with respect to the developing roller 10 is kept constant. In this state, the supply roller 11 is in pressure contact with the developing roller 1o.
なお、第６図においても、枢ピン８４．８４ａと、第１
の歯車３９を第５図に示した実際の位置からずらして示
しである。In addition, in FIG. 6, the pivot pin 84.84a and the first
The gear 39 is shown shifted from its actual position shown in FIG.
回動連結板８５，８５ａとトナー容器８との間には引張
ばね８６，８６ａの各端部が係止され、これによって回
動連結板８５，８５ａが回動付勢され、現像ローラ１０
が感光体ドラム１に対して圧接する。これらのばね８６
，８６ａは第１図及び第２図に示したばね３５，３５ａ
に代るものである。Each end of a tension spring 86, 86a is locked between the rotary connecting plates 85, 85a and the toner container 8, and thereby the rotary connecting plates 85, 85a are urged to rotate, and the developing roller 10
comes into pressure contact with the photoreceptor drum 1. These springs 86
, 86a are the springs 35, 35a shown in FIGS. 1 and 2.
It is a substitute for
また先端部が現像ローラ１０に圧接するトナー層厚規制
ブレード１４も、第１図の場合と異なり。Further, the toner layer thickness regulating blade 14 whose tip end is in pressure contact with the developing roller 10 is also different from that shown in FIG.
トナー容器８ではなくて回動連結板８５．８５ａに固定
されている。このように、第２の回転体である現像ロー
ラ１０に対して、相対位置を所定の関係に保つ必要のあ
るトナー補給ローラ１１とブレード１４が回動連結板８
５．８５ａを介して現像ローラ１０に連結されている。It is fixed not to the toner container 8 but to the rotating connecting plate 85.85a. In this way, the toner replenishing roller 11 and the blade 14, which need to maintain a predetermined relative position with respect to the developing roller 10, which is the second rotating body, are connected to the rotating connecting plate 8.
It is connected to the developing roller 10 via 5.85a.
第３の歯車８０は一方の回動連結板８５に位置不動に支
持された第４の歯車８７に噛み合い、該歯車８７はトナ
ー補給ローラ１１の軸８１に固定された第５の歯車８８
に噛み合っている。The third gear 80 meshes with a fourth gear 87 that is immovably supported by one rotary connecting plate 85, and this gear 87 is in mesh with a fifth gear 88 that is fixed to the shaft 81 of the toner supply roller 11.
are meshed with each other.
第５図及び第６図に示した他の構成は第１図及び第２図
と変りはない。The other configurations shown in FIGS. 5 and 6 are the same as in FIGS. 1 and 2.
複写動作時に駆動モータ３７が作動して、その回転が第
１の歯車３９を介して第２の歯車４０に伝達されるが、
このとき接線力Ｆがトナー容器８を介して複写機本体に
受は止められること、及び第２の歯車４０の回転がジヨ
イント４１を介して現像ローラ１０に伝えられ、これに
より現像ローラ１０が感光体ドラム１に圧接しながら回
転することは先の実施例と同じである。このとき現像ロ
ーラ１０と一体の第３の歯車８０も回転原動されるが、
その回転は第４の歯車８７を介して第５の歯車８８に伝
えられる。これにより現像ローラ１０に圧接したトナー
補給ローラ１１が回転開動される。During the copying operation, the drive motor 37 operates and its rotation is transmitted to the second gear 40 via the first gear 39.
At this time, the tangential force F is received by the copying machine main body via the toner container 8, and the rotation of the second gear 40 is transmitted to the developing roller 10 via the joint 41, so that the developing roller 10 is exposed to light. The rotation while being pressed against the body drum 1 is the same as in the previous embodiment. At this time, the third gear 80 integrated with the developing roller 10 is also driven to rotate.
The rotation is transmitted to the fifth gear 88 via the fourth gear 87. As a result, the toner replenishing roller 11, which is in pressure contact with the developing roller 10, is rotated and opened.
一方、感光体ドラム１に圧接しながら回転する現像ロー
ラ１ｏが、ドラム１やローラ１０の周面の不正確さによ
って感光体ドラム１に対して接近又は離隔する方向に、
即ち法線Ｎの方向に振れ動くと、回動連結板８５，８５
ａも、その共通回動軸線である枢ピン８４，８４ａのま
わりを振れ動く、これに伴って、回動連結板８５，８５
ａに位置不動に支持されたトナー補給ローラ１１とトナ
ー層厚規制ブレード１４も、現像ローラ１０と一緒に振
れ動く。トナー補給ローラ１１の軸８１は長孔８２，８
２ａに嵌合しているので、ローラ１１は、複写機本体に
対して固定状態にあるトナー容器８に対して、支障なく
振れ動くことができる。On the other hand, the developing roller 1o, which rotates while being in pressure contact with the photosensitive drum 1, moves toward or away from the photosensitive drum 1 due to inaccuracies in the circumferential surfaces of the drum 1 and the roller 10.
That is, when swinging in the direction of the normal line N, the rotating connecting plates 85, 85
a also swings around the pivot pins 84, 84a, which are their common rotation axes, and along with this, the rotation connecting plates 85, 85
The toner replenishing roller 11 and the toner layer thickness regulating blade 14, which are supported immovably at a, also swing together with the developing roller 10. The shaft 81 of the toner supply roller 11 has elongated holes 82 and 8.
2a, the roller 11 can swing without any trouble with respect to the toner container 8, which is fixed to the main body of the copying machine.
第５図及び第６図に示した実施例によれば、第１図及び
第２図に示した構成の利点のほか５次の如き利点を追加
的に得ることができる。According to the embodiment shown in FIGS. 5 and 6, in addition to the advantages of the configuration shown in FIGS. 1 and 2, the following five-order advantages can be additionally obtained.
即ち、上述のように現像ローラ１０が振れ動くと、トナ
ー補給ローラ１１とブレード１４も現像ローラ１０と一
体的に振れ動き、これらの相対位置が常に一定に保たれ
る。換言すれば、現像ローラに対するトナー補給ローラ
１１とブレード１４の接触状態が常に一定に保たれるの
である。このため、現像条件を常時一定に維持すること
ができ、高品質の可視像を常に安定して得ることが可能
となる。また所定の部材８０，１０，８５．８５ａ。That is, when the developing roller 10 swings as described above, the toner supply roller 11 and the blade 14 also swing integrally with the developing roller 10, and their relative positions are always kept constant. In other words, the state of contact between the toner replenishing roller 11 and the blade 14 with respect to the developing roller is always maintained constant. Therefore, the developing conditions can be kept constant at all times, and high quality visible images can always be stably obtained. Also, predetermined members 80, 10, 85.85a.
８７．８８，１１，１４を一体に作動させるので。Because 87, 88, 11, and 14 are operated together.
これらの作動の追従性がよく、しかも現像ローラ１０や
トナー補給ローラ１１の駆動が安定する。The followability of these operations is good, and the driving of the developing roller 10 and toner replenishing roller 11 is stable.
また歯車８０，８７．８８が現像装置７内に納められて
、互いに係合しているので、装置７を着脱するとき、こ
れらの歯車を接離させる必要がなく、現像装置の着脱性
を高めることができる。Furthermore, since the gears 80, 87, and 88 are housed in the developing device 7 and engage with each other, there is no need to bring these gears into contact with each other when the device 7 is attached or detached, which improves the ease of attaching and detaching the developing device. be able to.
現像ローラ１０に対して、相対位置を所定の関係に保つ
ことが有利な部材であれば、トナー補給ローラ１１やブ
レード１４以外の部材も、上述したところと同様にして
、現像ローラ１０に連結し、これらが一体的に動くよう
に構成することができる。Any member other than the toner replenishing roller 11 and blade 14 may be connected to the developing roller 10 in the same manner as described above, if it is advantageous to maintain the relative position in a predetermined relationship with respect to the developing roller 10. , these can be configured to move together.
またトナー容器８に回転自在に支持されたアジテータ９
も、現像ローラ１０等と一体的に振れ動くように構成す
ることもできるが、一般に現像ローラ１０に対するアジ
テータ９の相対位置は可視像の品質を保つ上で厳格さを
要求されることが少ない。したがってアジテータ９につ
いては、トナー容器８に位置不動に支持してもよく、こ
の場合、アジテータ９の軸に固定された歯車８９の回転
駆動は、適宜な駆動系を用いて行ってよい。例えば第５
図に示すように第１の歯車３９に順次噛み合う一連の中
間歯車９０，９１．９２を複写機水側に支持し、歯車９
２をアジテータ９の歯車８９に噛み合わせて、これを回
転駆動してもよいし、第２の歯車４０と、必要に応じて
これに噛み合う他の歯車とによって、アジテータ９を回
転させ、或いはジヨイント４１を介しての駆動力をアジ
テータ９に伝えるようにしてもよい。なお、第５図にお
けるＧ工は、現像装置７が例えば矢印方向Ａに着脱可能
であったとして、該装置を取り外すとき、複写機本体側
の歯車９２と、現像装置側の歯車８９とが分離する噛み
合い点を示している。Further, an agitator 9 rotatably supported by the toner container 8
However, in general, the relative position of the agitator 9 with respect to the developing roller 10 is not required to be very strict in order to maintain the quality of the visible image. . Therefore, the agitator 9 may be supported immovably on the toner container 8, and in this case, the gear 89 fixed to the shaft of the agitator 9 may be rotationally driven using an appropriate drive system. For example, the fifth
As shown in the figure, a series of intermediate gears 90, 91, and 92 that sequentially mesh with the first gear 39 are supported on the water side of the copying machine.
2 may be meshed with the gear 89 of the agitator 9 to rotate this, or the agitator 9 may be rotated by the second gear 40 and other gears meshed with this as necessary, or the agitator 9 may be rotated or The driving force may be transmitted to the agitator 9 via the agitator 41. Incidentally, work G in FIG. 5 indicates that, assuming that the developing device 7 is removable in the direction of the arrow A, for example, when the device is removed, the gear 92 on the copying machine main body side and the gear 89 on the developing device side are separated. It shows the meshing point.
またトナー補給ローラ１１を駆動する腸区動系も適宜変
更でき１例えば第１の歯車３９と噛み合う、もう１つの
第２の歯車（図示せず）をトナー容器８に回転自在では
あるが位置不動に支持し、この第２の歯車とトナー補給
ローラ１１との間に、ジヨイント４１と同様なもう１つ
のジヨイント（図示せず）を介在させ、第１の歯車３９
の回転を上記第２の歯車に伝え、これを上記ジヨイント
を介してトナー補給ローラ１１に伝えるようにしてもよ
いし、第１の歯車３９とは全く別の駆動系によってトナ
ー補給ローラ１１を駆動してもよい。In addition, the intestinal movement system that drives the toner replenishment roller 11 can be changed as appropriate.1 For example, another second gear (not shown) that meshes with the first gear 39 may be attached to the toner container 8 in a rotatable but fixed position. Another joint (not shown) similar to the joint 41 is interposed between the second gear and the toner supply roller 11, and the first gear 39
The rotation may be transmitted to the second gear and then transmitted to the toner replenishing roller 11 via the joint, or the toner replenishing roller 11 may be driven by a drive system completely separate from the first gear 39. You may.
第１図、第２図及び第５図、第６図に示した実施例では
第２の伝動部材である第２の歯車４０を位置不動に支持
する支持部材を、機械本体たる複写機本体に対して固定
状態で取付けられたトナー容器８として構成し、また第
２の回転体たる現像ローラ１０を、その移動が可能な状
態で支持する回転体支持部材も、複写機本体に対して固
定状態で取付けられたトナー容器とした。即ち、現像ロ
ーラ１ｏを支持する回転体支持部材と、第２の歯車４０
を支持する支持部材を、同一の部材、即ちトナー容器と
したのであるが、他の適宜な部材を現像ローラ用の回転
体支持部材、ないしは第２の歯車用の支持部材として利
用してもよく、またこれらの支持部材を別々の部材によ
って構成してもよいことは明らかである。In the embodiments shown in FIGS. 1, 2, 5, and 6, a support member that immovably supports the second gear 40, which is the second transmission member, is attached to the main body of the copying machine, which is the main body of the machine. The rotating body support member configured as a toner container 8 fixedly attached to the main body of the copying machine and supporting the developing roller 10, which is a second rotating body, in a movable state is also fixed to the main body of the copying machine. The toner container was attached with That is, the rotating body support member that supports the developing roller 1o and the second gear 40
Although the same member, that is, the toner container, is used as the supporting member for supporting the developing roller, other suitable members may be used as the rotating body supporting member for the developing roller or the supporting member for the second gear. , it is clear that these supporting members may also be constituted by separate members.
第７図及び第８図に示す実施例においては、第１の歯車
３９によって回転駆動される第２の歯車４ｏが、保持部
材３０によって複写機本体に着脱可能な状態で固定され
た外側ケース１０８より成る支持部材に回転自在に支持
され、トナー容器８が外側ケース１０８にピン９４を介
して揺動可能に支持されている。このようにトナー容器
８は、位置不動な感光体ドラム１に対して接近又は離隔
可能状態で外側ケース１０８に支持されている。In the embodiment shown in FIGS. 7 and 8, the second gear 4o, which is rotationally driven by the first gear 39, is removably fixed to the main body of the copying machine by a holding member 30 in an outer case 108. The toner container 8 is rotatably supported by a support member consisting of the toner container 8 , and the toner container 8 is swingably supported by the outer case 108 via a pin 94 . In this way, the toner container 8 is supported by the outer case 108 in such a manner that it can approach or move away from the stationary photosensitive drum 1.
一方、トナー容器８に第２の回転体たる現像ローラ１０
が回転自在に支持されている。このように、この例でも
トナー容器８は現像ローラ１０を支持する回転体支持部
材の一例をなしているが、先の実施例と異なるところは
、現像ローラ１０がトナー容器８に対して位置不動に支
持されていることである。即ち、トナー容器に形成され
た長孔に、現像ローラ１０の軸１２が支持されているの
ではなく、トナー容器８の円形孔に直接又は軸受（図示
せず）を介して回転自在に支持されているのである。On the other hand, a developing roller 10 serving as a second rotating body is mounted in the toner container 8.
is rotatably supported. In this way, the toner container 8 also serves as an example of a rotating body support member that supports the developing roller 10, but the difference from the previous embodiment is that the developing roller 10 is immovable relative to the toner container 8. It is supported by That is, the shaft 12 of the developing roller 10 is not supported in a long hole formed in the toner container, but is rotatably supported in a circular hole in the toner container 8 either directly or via a bearing (not shown). -ing
その代りに、前述の如くトナー容器８自体が感光体ドラ
ム１に対して可動であり、該容器８と外側ケース１０８
との間に設けられた同じばね力の圧縮ばね９５，９６に
よって現像ローラ１０が感光体ドラム１に圧接されてい
る。Instead, as described above, the toner container 8 itself is movable relative to the photoreceptor drum 1, and the container 8 and the outer case 108 are movable.
The developing roller 10 is pressed against the photosensitive drum 1 by compression springs 95 and 96 having the same spring force and provided between the developing roller 10 and the photosensitive drum 1 .
第２の歯車４０の回転は、オルダム継手より成るジヨイ
ント４１を介して、現像ローラ１０に伝えられることは
先の実施例と同じである。またトナー補給ローラ１１は
、現像ローラ１０に圧接しつつ、トナー容器８に位置不
動に支持されており、しかも図示していないトナー層厚
規制ブレードもトナー容器８に固定され、その先端部を
現像ローラ１０に圧接させている。このように本例では
、現像ローラ１０と所定の位置関係を保つ必要のあるブ
レードとトナー補給ローラ１１が、トナー容器８（即ち
、第２の回転体たる現像ローラ１０を支持する支持部材
）自体によって現像ローラ１０に連結されている。As in the previous embodiment, the rotation of the second gear 40 is transmitted to the developing roller 10 via a joint 41 made of an Oldham joint. Further, the toner replenishing roller 11 is in pressure contact with the developing roller 10 and is immovably supported by the toner container 8. Moreover, a toner layer thickness regulating blade (not shown) is also fixed to the toner container 8, and its tip is used for development. It is pressed against the roller 10. As described above, in this example, the blade and toner replenishing roller 11, which need to maintain a predetermined positional relationship with the developing roller 10, are attached to the toner container 8 (i.e., the supporting member that supports the developing roller 10, which is the second rotating body) itself. It is connected to the developing roller 10 by.
複写機本体３８に固定された即動モータ３７の回転は、
その出力軸に固定された第１の歯車３９を介して第２の
歯車４０に伝えられるが、このとき先に詳しく説明した
接線力は、複写機本体に対して固定状態にある外側ケー
ス１０８を介して複写機本体に受は止められ、第２の歯
車４０の回転トルクだけが現像ローラｌＯに伝えられる
。したがってこの例においても現像ローラ１ｏの一方の
端部に接線力が及ぼされることはなく、ばね９５゜９６
による加圧力によって、現像ロー１０は感光体ドラム１
に対して、その軸方向に均一な圧力で当接することがで
きる。The rotation of the instant-acting motor 37 fixed to the copying machine main body 38 is as follows.
The tangential force described in detail above is transmitted to the second gear 40 via the first gear 39 fixed to the output shaft. The receiver is fixed to the main body of the copying machine via the rotating torque of the second gear 40, and only the rotational torque of the second gear 40 is transmitted to the developing roller IO. Therefore, in this example as well, no tangential force is applied to one end of the developing roller 1o, and the spring 95°96
Due to the pressure applied by
can be brought into contact with uniform pressure in the axial direction.
第７図及び第８図に示した実施例は、特許請求の範囲第
４項に記載の構成に対応するものであり、この構成によ
れば、現像ローラ１ｏの軸１２がトナー容器８の長孔に
嵌合するのではないため、この部分のシール性を高める
ことができ、トナー容器内部のトナーが外部に漏出する
不都合をより確実に防止することができる。The embodiment shown in FIGS. 7 and 8 corresponds to the structure set forth in claim 4, and according to this structure, the shaft 12 of the developing roller 1o is aligned with the length of the toner container 8. Since it does not fit into the hole, the sealing performance of this part can be improved, and the inconvenience of the toner inside the toner container leaking to the outside can be more reliably prevented.
また第７図及び第８図に示す実施例では、トナー容器８
とこれに支持された現像ローラ１０やトナー補給ローラ
やブレードが１つのユニットをなして、揺動可能となっ
ているが、このユニットが比較的軽量であると、ばね９
５，９６によって現像ローラ１０を感光体ドラム１に圧
接させやすく、可視像の画質を高めることができる。Further, in the embodiment shown in FIGS. 7 and 8, the toner container 8
The developing roller 10, toner replenishing roller, and blade supported by the developing roller 10 form a unit that can swing.If this unit is relatively lightweight, the spring 9
5 and 96, it is easy to bring the developing roller 10 into pressure contact with the photosensitive drum 1, and the quality of the visible image can be improved.
第１図、第２図及び第５図、第６図の構成において、長
孔３２，３２ａ ； ８２，８２ａの長軸と短軸の長さ
の差、ないしはジヨイント４１による、現像ローラ１０
の法線Ｎ方向の振れは普通０．１乃至０．３ｍ程度のわ
ずかな量でよく、これは第７図及び第８図に示した構成
においても同様である。しかもジヨイント４１は現像装
置７に組込まれているため、現像ローラ１０に対するジ
ヨイント４１の組付誤差を実質的になくすことが可能で
ある。これらの理由で、ジヨイント４１としては、第２
図、第６図及び第７図に示したオルダム継手のほかに、
構成の簡単な適宜なジヨイントを採用することもできる
。例えば、第９図（ａ）、（ｂ）に示す如く、第２の歯
車４ｏと、現像ローラ１０側とにそれぞれ連結したコイ
ルばね４６より成るユニバーサルジヨイントを用いても
よいし、第１０図に示すようにゴム４７等の可撓性部材
を有し、その各端部の取付部４８．４８を第２の歯車４
０側と現像ローラ１０側にそれぞれ取付けた可撓性継手
４９を用いることもできる。また採用するジヨイントの
構成によっては、第２の歯車４０に対して揺れ動く現像
ローラ１０のトルクが変動することも考えられるが、第
２の歯車４０側と現像ローラ１０側との相対的な法線Ｎ
方向の動きは、前述のようにわずかなものであるため、
トルク変動が発生しても、可視像の画質に悪影響を与え
る程のものではない。また例えば第２図、第６図及び第
７図に示したジヨイント４１の円板４１ａ、４１ｂを組
付けるとき、各円板４１ａ、４１ｂと。In the configurations shown in FIGS. 1, 2, 5, and 6, the length of the developing roller 10 is determined by the difference in length between the long and short axes of the elongated holes 32, 32a; 82, 82a, or by the joint 41.
The deflection in the direction of the normal line N may normally be a small amount of about 0.1 to 0.3 m, and this also applies to the configurations shown in FIGS. 7 and 8. Furthermore, since the joint 41 is incorporated into the developing device 7, it is possible to substantially eliminate errors in assembling the joint 41 to the developing roller 10. For these reasons, the second joint 41 is
In addition to the Oldham joints shown in Figures 6 and 7,
It is also possible to employ an appropriate joint with a simple configuration. For example, as shown in FIGS. 9(a) and 9(b), a universal joint consisting of a coil spring 46 connected to the second gear 4o and the developing roller 10 side, respectively, may be used, or as shown in FIG. As shown in FIG.
It is also possible to use flexible joints 49 attached to the 0 side and the developing roller 10 side, respectively. Furthermore, depending on the configuration of the adopted joint, the torque of the developing roller 10 swinging relative to the second gear 40 may vary; however, the relative normal between the second gear 40 side and the developing roller 10 side N
Since the directional movement is slight as mentioned above,
Even if torque fluctuations occur, they are not large enough to adversely affect the quality of the visible image. For example, when assembling the disks 41a, 41b of the joint 41 shown in FIGS. 2, 6, and 7, each disk 41a, 41b.
第２の歯車４０の軸又は現像ローラ１０の軸１２とを、
例えばキーとキー溝等の係合手段だけで連結するだけで
もよく、これらをねじ４１ｄ （第２図）等によって固
着しなくとも良い。ジヨイント４１は現像装置に組込ま
れ、その軸方向に保持されるので、ねじで固定しなくと
も、その離脱を防止できるからである。このようにねじ
を用いなければ、ねじの取付けのための部分が不要とな
るため、ジヨイント４１の全厚さを小さくでき、装置を
コンパクト化することが可能となる。ジョイント４１の
振れの振幅が小さいこともジョイン１〜を小さく構成で
きる理由の１つである。また回転を伝える方向が一定し
ているため、一方向にのみ回転を伝達する簡単で小型な
ジヨイントを用いることができる。The shaft of the second gear 40 or the shaft 12 of the developing roller 10,
For example, they may be connected only by engagement means such as a key and a keyway, and they do not need to be fixed by screws 41d (FIG. 2) or the like. This is because the joint 41 is incorporated into the developing device and is held in the axial direction thereof, so that it can be prevented from coming off even if it is not fixed with screws. If screws are not used in this way, there is no need for a part for attaching screws, so the total thickness of the joint 41 can be reduced, and the device can be made more compact. The small vibration amplitude of the joint 41 is also one of the reasons why the joins 1 to 1 can be configured to be small. Furthermore, since the direction in which rotation is transmitted is constant, a simple and compact joint that transmits rotation in only one direction can be used.
先に示した各実施例において、第１の歯車３９を、モー
タ３７の出力軸に直に取り付けるのではなく、中間のア
イドルギアを介して、モータ３７の回転を第１の歯車３
９に伝えるようにしてもよい。或いは第２の歯車４０に
、トナー容器８に支持された１又は複数の中間歯車を順
次係合し、該中間歯車をジヨイント４１を介して現像ロ
ーラ１０に連結してもよいし、第２の歯車４０をジヨイ
ントを介して、トナー容器に支持された中間歯車に連結
し、この中間歯車を直に、又はさらに他の中間歯車を介
して現像ローラに固定された歯車に係合させるようにし
てもよい。このようにモータ３７を第１の歯車３９に連
結する形態、又は第２の歯車４０をジヨイント４１を介
して現像ローラに連結する態様は各種改変可能である。In each of the embodiments shown above, the first gear 39 is not directly attached to the output shaft of the motor 37, but the rotation of the motor 37 is connected to the first gear 3 through an intermediate idle gear.
9 may be communicated. Alternatively, one or more intermediate gears supported by the toner container 8 may be sequentially engaged with the second gear 40, and the intermediate gears may be connected to the developing roller 10 via the joint 41. The gear 40 is connected via a joint to an intermediate gear supported on the toner container, and this intermediate gear is engaged directly or via another intermediate gear with a gear fixed to the developing roller. Good too. Various modifications can be made to the manner in which the motor 37 is connected to the first gear 39 or the manner in which the second gear 40 is connected to the developing roller via the joint 41.
さらに、現像ローラ１０を付勢するばね３５゜３５ａ
：８６，８６ａ ；９５，９６を直接軸受３３．３３ａ
、回動連結板８５，８５ａ又はトナー容器８に圧接させ
ずに、ばね付勢されたレバーを軸受３３，３３ａ又は軸
１２（第１図及び第２図）、ないしは回動連結板８５，
８５ａ （第５図及び第６図）又はトナー容器（第７図
及び第８図）に圧接させて現像ローラ１０を付勢しても
よい。また現像ローラ１０の位置いかんによってはばね
を全く用いず、現像ローラ１０自体の自重によって、該
ローラ１０を感光体ドラム１に圧接させることも可能で
ある。ばねないしは現像ローラ１０の自重による各側の
加圧力は、それぞれ例えば１ｋｇ程度以下に設定するこ
とができる。Furthermore, a spring 35°35a biases the developing roller 10.
: 86, 86a; 95, 96 directly bearing 33.33a
, the spring-biased lever is moved to the bearings 33, 33a or the shaft 12 (FIGS. 1 and 2), or to the rotary connecting plate 85, 85a or the toner container 8 without pressure contact.
85a (FIGS. 5 and 6) or a toner container (FIGS. 7 and 8) to urge the developing roller 10. Further, depending on the position of the developing roller 10, it is also possible to press the developing roller 10 against the photosensitive drum 1 by the weight of the developing roller 10 itself without using a spring at all. The pressing force on each side due to the spring or the own weight of the developing roller 10 can be set to, for example, about 1 kg or less.
ところで、本発明に係る構成では現像装置を複写機本体
に対して支障なく上下の方向に着脱するように構成でき
ることは先に説明したが、本発明の理解のため、現像装
置を上下に着脱する複写機の一例を図面に従って説明し
ておく。By the way, it was explained earlier that in the configuration according to the present invention, the developing device can be configured to be attached to and detached from the copying machine body in the vertical direction without any problem. An example of a copying machine will be explained according to the drawings.
第１１図において、複写機本体の機枠には回動体７０が
ピン７１を介して回動可能に支持され、この回動体７０
に支持ピン７２を介して現像装置７とクリーニング装置
１７が着脱自在に支持されている。また複写機本体には
、上記ピン７１を介して第２の回動体７３が回動自在に
支持され、この回動体７３に感光体ドラム１が回転自在
に支持されている。In FIG. 11, a rotating body 70 is rotatably supported on the frame of the copying machine body via a pin 71.
The developing device 7 and the cleaning device 17 are removably supported through support pins 72 . Further, a second rotating body 73 is rotatably supported on the copying machine main body via the pin 71, and the photosensitive drum 1 is rotatably supported by this rotating body 73.
現像装置７と、その現像ローラ１０に回転力を伝える伝
動装置等は先の各実施例で示したものと変りはない。The developing device 7 and the transmission device for transmitting rotational force to the developing roller 10 are the same as those shown in the previous embodiments.
現像装置７を取外すときは、原稿（図示せず）を載置す
るコンタクトガラス７４を第１２図のように移動させ、
回動体７０のつまみ７５をつかんでこれを第１２図の如
く回動する。これにより現像装置７は複写機本体から離
脱し、現像装置７を回動体７０から外すことができる。When removing the developing device 7, move the contact glass 74 on which the original (not shown) is placed as shown in FIG.
Grasp the knob 75 of the rotating body 70 and rotate it as shown in FIG. As a result, the developing device 7 can be detached from the main body of the copying machine, and the developing device 7 can be removed from the rotating body 70.
このときクリニング装置１７も同様に離脱することがで
きる。At this time, the cleaning device 17 can also be removed.
回動体７０を第１１図の状態に戻すことによって現像装
置をセットできる。またここに示した複写機は、ロック
レバ−７６を回動させ、これをピン７７から外して第２
の回動体７３を第１２図に鎖線で示す如く回動せしめ、
感光体ドラム１の下方を開放してジャム紙の処理等の作
業を行うことができる。７８は、両回動体７０．７３の
開き角が所定の木きさより大きくなったとき、両者を離
す方向に付勢し、逆に小さくなったとき両回動体７０．
７３を互いに接近する方向に付勢するトグルばねである
。The developing device can be set by returning the rotating body 70 to the state shown in FIG. Further, in the copying machine shown here, the lock lever 76 is rotated to remove it from the pin 77, and the second
The rotating body 73 is rotated as shown by the chain line in FIG.
The lower part of the photoreceptor drum 1 can be opened to perform operations such as processing jammed paper. 78 biases both rotating bodies 70.73 in a direction to separate them when the opening angle becomes larger than a predetermined width, and vice versa.
This is a toggle spring that urges the elements 73 toward each other.
第１１図及び第１２図に示した現像装置７は、上述のよ
うに複写機本体に対してほぼ上下の方向Ａに着脱できる
が、このような複写機に本発明に係る伝動装置を支障な
く採用することができる。The developing device 7 shown in FIGS. 11 and 12 can be attached to and removed from the copying machine main body in substantially the vertical direction A as described above, but the transmission device according to the present invention can be attached to such a copying machine without any trouble. Can be adopted.
以上、像担持体が感光体ドラムとして構成された場合に
ついて説明したが、これが支持ローラに巻き掛けられた
感光体ベルトより成るとき、或いは誘電体層を有する誘
電体ドラム又はベルトより成るときも本発明を支障なく
適用できる。のみならず、第１の回転体と第２の回転体
をその長手方向に亘ってほぼ一定の圧力で圧接させる装
置全般に本発明を適用でき、例えば先にも示したように
、像担持体より成る第１の回転体に、帯電ローラより成
る第２の回転体を圧接させる画像形成装置、同じく像担
持体より成る第１の回転体にクリーニングローラより成
る第２の回転体を圧接させる画像形成装置、オフセット
ローラより成る第１の回転体をインクローラより成る第
２の回転体を圧接させるオフセット印刷機のほか、一対
の定着ローラより成る第１の回転体と第２の回転体を有
し、或いは像担持体より成る第１の回転体に転写ローラ
より成る第２の回転体を圧接させる画像形成装置等にも
広く適用可能である。また第１３図に示すような回転型
現像装置を有する画像形成装置にも有利に適用できる。The case where the image carrier is configured as a photoreceptor drum has been described above, but this book also applies when the image carrier is composed of a photoreceptor belt wound around a support roller, or a dielectric drum or belt having a dielectric layer. The invention can be applied without difficulty. In addition, the present invention can be applied to any device in which a first rotating body and a second rotating body are brought into pressure contact with each other at a substantially constant pressure along their longitudinal directions. An image forming apparatus in which a second rotating body, which is a charging roller, is brought into pressure contact with a first rotating body, which is also an image carrier, and a second rotating body, which is a cleaning roller, is in pressure contact with a first rotating body, which is also an image carrier The forming device includes an offset printing machine in which a first rotating body consisting of an offset roller is brought into pressure contact with a second rotating body consisting of an ink roller, as well as a first rotating body and a second rotating body consisting of a pair of fixing rollers. Alternatively, the present invention can be widely applied to image forming apparatuses in which a second rotating body consisting of a transfer roller is brought into pressure contact with a first rotating body consisting of an image carrier. Further, the present invention can be advantageously applied to an image forming apparatus having a rotary developing device as shown in FIG.
第１３図において、感光体ドラム（第１の回転体）１は
複写機本体に回転可能に支持され、これに回転型現像装
置７が対置している。この現像装置７は、そのケーシン
グ６１が３つの仕切壁６０゜６０ａ、６０ｂによって３
つの現像室に区切られ、そのそれぞれに例えば色の異な
るトナー（図示せず）が収容されている。また各現像室
には、現像ローラ１０，１０ａ、１０ｂと、トナー供給
ローラ１１．ｌｌａ、ｌｌｂと、アジテータ９，９ａ。In FIG. 13, a photosensitive drum (first rotating body) 1 is rotatably supported by the main body of the copying machine, and a rotary developing device 7 is opposed to it. This developing device 7 has a casing 61 separated by three partition walls 60 degrees 60a and 60b.
The developing chamber is divided into two developing chambers, each of which contains, for example, toner of a different color (not shown). Further, each developing chamber includes developing rollers 10, 10a, and 10b, and a toner supply roller 11. lla, llb, and agitators 9, 9a.
９ｂがそれぞれ回転自在に配置されている。現像装置７
はそのケーシング６１の軸、ｖｉｏを中心として回転駆
動され、感光体ドラム１に対向した現像ローラによって
ドラム１に形成されて静電潜像が可視像化される。第１
３図の状態では、現像ローラ１０がドラム１に対向し、
これが感光体ドラム１の表面に圧接し、トナーによって
先に示した現像装置の場合と同様に静電潜像を接触現像
する。9b are arranged rotatably. Developing device 7
is rotationally driven around the axis of the casing 61, vio, and is formed on the drum 1 by a developing roller facing the photosensitive drum 1, so that an electrostatic latent image is visualized. 1st
In the state shown in FIG. 3, the developing roller 10 faces the drum 1,
This is brought into pressure contact with the surface of the photoreceptor drum 1, and the electrostatic latent image is developed by contact with the toner in the same manner as in the case of the developing device described above.
また、複写機本体の機枠に位置不動に第１の歯車３９が
支持され、これが第１３図に示していない駆動装置によ
って回転駆動される。この歯車３９はケーシング６１に
位置不動に支持された第２の歯車４０を介して、同じく
ケーシング６１に支持された歯車４０ａに噛み合い、該
歯車４０はジヨイント（第２図、第６図及び第７図参照
）を介して現像ローラ１０に連結されている。その他の
構成も先の実施例の場合と同様である。歯車３９゜４０
．４０ａを介して回転を伝えられた現像ローラ１０が回
転して現像動作が行われ、この場合も、第２の歯車４０
に加えられた接線力がケーシング６１、即ち複写機本体
に受は止められ、よって現像ローラ１０はその軸方向全
体に亘って均一な圧力でドラム１に均一に圧接する。Further, a first gear 39 is fixedly supported on the frame of the copying machine body, and is rotationally driven by a drive device not shown in FIG. This gear 39 meshes with a gear 40a which is also supported by the casing 61 via a second gear 40 which is immovably supported by the casing 61. (see figure) to the developing roller 10. The other configurations are also the same as in the previous embodiment. Gear 39°40
．． The developing roller 10 whose rotation is transmitted through the gear 40a rotates to perform a developing operation, and in this case as well, the second gear 40
The tangential force applied to the developing roller 10 is received by the casing 61, that is, the main body of the copying machine, so that the developing roller 10 is uniformly pressed against the drum 1 with uniform pressure throughout its axial direction.
他の色のトナーで現像を行うときは、ケーシング６１が
回転を駆動され、これにより第２の歯車４０と歯車４０
ａが第１の歯車３９から離れ、他の現像室に所属する他
の第２の歯車とこれが係合するもう１つの歯車（共に図
示せず）のうち、第２の歯車が第１の歯車３９に係合し
、上述したところと同様にその各現像ローラｌｏａ又は
１０ｂがドラム１に均一に圧接しながら現像が行われる
。When developing with toner of another color, the casing 61 is driven to rotate, thereby causing the second gear 40 and the gear 40 to rotate.
a separates from the first gear 39, and of another gear (both not shown) that this engages with another second gear belonging to another developing chamber, the second gear is the first gear. 39, and development is performed while each developing roller loa or 10b is uniformly pressed against the drum 1 in the same manner as described above.
このように、１つの第１の回転体に対して、複数の第２
の回転体（現像ローラ１０，１０ａ、１０ｂ）が選択的
に圧接する装置にも本発明を適用できるのである。In this way, for one first rotating body, a plurality of second
The present invention can also be applied to a device in which rotating bodies (developing rollers 10, 10a, 10b) are selectively pressed against each other.
また第２図、第６図及び第７図に示した第１の歯車３９
に、同時に複数の第２の歯車４０を係合させ、そのそれ
ぞれにジヨイントを介して第２の回転体を連結し、これ
らを先の実施例の場合と同様に１つの第１の回転体（又
は複数の第１の回転体）にそれぞれ均一な圧力で圧接さ
せるように構成することもできる。また１つの第２の歯
車から複数の第２の回転体に順次ジヨイントを介して回
転を伝えるように構成することも可能である。さらに、
第２の歯車からジヨイントを介して回転される第２の回
転体に、他の歯車を固定し、これを、他の第３の回転体
に固定した歯車に、直に又は中間歯車を介して連結し、
この第３の回転体を第１又は第２の回転体に均一圧力で
圧接させるように構成することもできる。Also, the first gear 39 shown in FIGS. 2, 6, and 7
At the same time, a plurality of second gears 40 are engaged, each of which is connected to a second rotating body via a joint, and these are connected to one first rotating body ( or a plurality of first rotating bodies) may be brought into pressure contact with each other with uniform pressure. Further, it is also possible to configure the rotation to be sequentially transmitted from one second gear to a plurality of second rotating bodies via joints. moreover,
Another gear is fixed to a second rotating body rotated from the second gear via a joint, and this is connected directly or via an intermediate gear to a gear fixed to another third rotating body. connect,
It is also possible to configure the third rotating body to be brought into pressure contact with the first or second rotating body with uniform pressure.
以上説明した実施例では、第１及び第２の伝動部、材を
第１の歯車３９及び第２の歯車４０として構成し、他の
伝動部材としても歯車を示したが、他の伝動部材、例え
ば摩擦車等を用いることもできる。In the embodiment described above, the first and second transmission parts and materials are configured as the first gear 39 and the second gear 40, and gears are also shown as other transmission members, but other transmission members, For example, a friction wheel or the like can also be used.
第２の回転体を支持する回転体支持部材、及び第２の伝
動部材を支持する支持部材は、本発明を適用する対象に
応じて、適宜変えられることは当然である。It goes without saying that the rotary body support member that supports the second rotary body and the support member that supports the second transmission member can be changed as appropriate depending on the object to which the present invention is applied.
倭米
本発明によれば、簡単な構成によって、第１の回転体に
対する第２の回転体の圧接力の均一性を高めることがで
きる。According to the present invention, the uniformity of the pressing force of the second rotating body with respect to the first rotating body can be improved with a simple configuration.
第１図は電子複写機の要部のみを示す部分断面図、第２
図は第１図の概略水平断面図であって、第１の歯車の位
置をずらすと共に一部の要素を省略して示した図、第３
図は現像ローラと感光体ドラムとの接触圧力と、可視像
の濃度との関係の一例を示すグラフ、第４図は現像ロー
ラの表面凹凸を誇張して示した断面図、第５図は他の実
施例を示す断面図、第６図は第５図の概略水平断面図で
あって、第２図と同様に一部の部材の位置をずらし、か
つ一部の部材を省略して示した図、第７図はさらに別の
実施例を示す部分断面図、第８図は第７図に示したトナ
ー容器の支持状態を示す断面図、第９図（ａ）、（ｂ）
及び第１０図はジヨイントの他の例をそれぞれ示す図、
第１１図及び第１２図は現像装置をほぼ上下方向に着脱
する複写機の一例を示す部分断面図、第１３図は回転型
現像装置を有する複写機に本発明を適用した例を示す断
面図、第１４図は従来の複写機の一例を示す断面図、第
１５図は第１４図に示した現像装置やばね等の関係を模
式的に示した説明平面図、第１６図は第１４図と異なる
従来例を示す断面図である。
４１・・・ジヨイント
第１図
＝９
第３図
篠部１ｔ−ｉＪ
第７図
第３
図
第６図
第９図
（ｂ）
第１Ｑ図
第１３図
第
１４図
第１５図Figure 1 is a partial sectional view showing only the main parts of the electronic copying machine, Figure 2
The figure is a schematic horizontal sectional view of FIG. 1, with the position of the first gear shifted and some elements omitted;
The figure is a graph showing an example of the relationship between the contact pressure between the developing roller and the photoreceptor drum and the density of the visible image, FIG. 4 is a cross-sectional view exaggerating the surface unevenness of the developing roller, and FIG. A cross-sectional view showing another embodiment, FIG. 6 is a schematic horizontal cross-sectional view of FIG. 5, in which the positions of some members are shifted as in FIG. FIG. 7 is a partial cross-sectional view showing still another embodiment, FIG. 8 is a cross-sectional view showing the state in which the toner container shown in FIG. 7 is supported, and FIGS. 9(a) and (b).
and FIG. 10 are diagrams showing other examples of joints, respectively.
FIGS. 11 and 12 are partial sectional views showing an example of a copying machine in which a developing device is attached and removed almost vertically, and FIG. 13 is a sectional view showing an example in which the present invention is applied to a copying machine having a rotary developing device. , FIG. 14 is a sectional view showing an example of a conventional copying machine, FIG. 15 is an explanatory plan view schematically showing the relationship of the developing device, springs, etc. shown in FIG. 14, and FIG. 16 is a cross-sectional view showing an example of a conventional copying machine. FIG. 3 is a cross-sectional view showing a conventional example different from the previous example. 41...Joint Figure 1 = 9 Figure 3 Shinobe 1t-iJ Figure 7 Figure 3 Figure 6 Figure 9 (b) Figure 1Q Figure 13 Figure 14 Figure 15
Claims (5)
隔する方向に移動可能な状態で、該回転体に圧接する第
２の回転体に駆動装置からの回転力を伝える伝動装置に
おいて、 機械本体に支持され、駆動装置により回転駆動される第
１の伝動部材と、該伝動部材に係合し、かつ機械本体に
対して固定状態に取付けられた支持部材に位置不動に支
持されている第２の伝動部材と、第２の回転体の前記移
動を許容しつつ、第２の伝動部材の回転を第２の回転体
に伝えるジョイントとを具備することを特徴とする伝動
装置。(1) In a transmission device that transmits rotational force from a drive device to a second rotating body that is in pressure contact with a first rotating body that is movable toward or away from a first rotating body that is rotationally driven. , a first transmission member that is supported by the machine body and rotationally driven by the drive device; and a support member that engages with the transmission member and is fixedly attached to the machine body and is supported in an immovable manner. A transmission device comprising: a second transmission member that transmits rotation of the second transmission member to the second rotation body while allowing the movement of the second rotation body.
付けられた回転体支持部材に、前記移動が可能な状態で
支持されている特許請求の範囲第１項に記載の伝動装置
。(2) The transmission device according to claim 1, wherein the second rotating body is movably supported by a rotating body support member fixedly attached to the machine body. .
の伝動部材を支持する支持部材が同一部材である特許請
求の範囲第２項に記載の伝動装置。(3) a rotating body support member that supports a second rotating body;
The transmission device according to claim 2, wherein the supporting members supporting the transmission members are the same member.
転体に対して接近又は離隔可能な状態で支持された回転
体支持部材に、第２の回転体が位置不動に支持されてい
る特許請求の範囲第１項に記載の伝動装置。(4) The second rotating body is supported in an immovable position by the rotating body supporting member that is supported by the supporting member that supports the second transmission member in a state that it can approach or separate from the first rotating body. A transmission device according to claim 1.
つ必要のある部材と、第２の回転体とを連結した特許請
求の範囲第１項乃至第４項のうちいずれか１つに記載の
伝動装置。(5) Any one of claims 1 to 4 in which a member whose relative position with respect to the second rotating body needs to be maintained in a predetermined relationship is connected to the second rotating body. Transmission device as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62336683A JP2811568B2 (en) | 1987-12-14 | 1987-12-29 | Developing device |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP62-189573 | 1987-12-14 | ||
| JP18957387 | 1987-12-14 | ||
| JP62336683A JP2811568B2 (en) | 1987-12-14 | 1987-12-29 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0221049A true JPH0221049A (en) | 1990-01-24 |
| JP2811568B2 JP2811568B2 (en) | 1998-10-15 |
Family
ID=26505544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP62336683A Expired - Lifetime JP2811568B2 (en) | 1987-12-14 | 1987-12-29 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2811568B2 (en) |
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| EP3379340A1 (en) * | 2006-12-11 | 2018-09-26 | Canon Kabushiki Kaisha | Developing apparatus, process cartridge and electrophotographic image forming apparatus |
| JP2009288286A (en) * | 2008-05-27 | 2009-12-10 | Canon Inc | Assembling method for process cartridge, disassembling method for process cartridge, reproducing method for process cartridge and process cartridge |
| US10025266B2 (en) | 2012-12-14 | 2018-07-17 | Canon Kabushiki Kaisha | Process cartridge including a coupling member and a sheet that contacts the coupling member |
| US9880517B2 (en) | 2012-12-14 | 2018-01-30 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus |
| CN104919377B (en) * | 2012-12-14 | 2020-03-31 | 佳能株式会社 | Process cartridge and image forming apparatus |
| JP2017211660A (en) * | 2012-12-14 | 2017-11-30 | キヤノン株式会社 | Process cartridge and image forming apparatus |
| US10698361B2 (en) | 2012-12-14 | 2020-06-30 | Canon Kabushiki Kaisha | Process cartridge having a coupling member and a coupling member supporting portion |
| US10712707B2 (en) | 2012-12-14 | 2020-07-14 | Canon Kabushiki Kaisha | Process cartridge having a positioning portion capable of positioning a driving force receiving portion of a coupling member |
| CN104919377A (en) * | 2012-12-14 | 2015-09-16 | 佳能株式会社 | Process cartridge and image formation device |
| US11073787B2 (en) | 2012-12-14 | 2021-07-27 | Canon Kabushiki Kaisha | Process cartridge with a coupling member having a movable force receiving portion |
| JP2014134788A (en) * | 2012-12-14 | 2014-07-24 | Canon Inc | Process cartridge and image forming apparatus |
| WO2014092207A1 (en) * | 2012-12-14 | 2014-06-19 | キヤノン株式会社 | Process cartridge and image formation device |
| US11392079B2 (en) | 2012-12-14 | 2022-07-19 | Canon Kabushiki Kaisha | Process cartridge and image forming apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2811568B2 (en) | 1998-10-15 |
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