JP2003280470A - Contact/separation mechanism for cleaning device - Google Patents

Contact/separation mechanism for cleaning device

Info

Publication number
JP2003280470A
JP2003280470A JP2002078988A JP2002078988A JP2003280470A JP 2003280470 A JP2003280470 A JP 2003280470A JP 2002078988 A JP2002078988 A JP 2002078988A JP 2002078988 A JP2002078988 A JP 2002078988A JP 2003280470 A JP2003280470 A JP 2003280470A
Authority
JP
Japan
Prior art keywords
cleaning device
cam
intermediate transfer
arm
contact
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.)
Pending
Application number
JP2002078988A
Other languages
Japanese (ja)
Inventor
Kazuhiko Namiki
和彦 並木
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2002078988A priority Critical patent/JP2003280470A/en
Publication of JP2003280470A publication Critical patent/JP2003280470A/en
Pending legal-status Critical Current

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  • Cleaning In Electrography (AREA)
  • Electrostatic Charge, Transfer And Separation In Electrography (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a contact/separation mechanism for a cleaning device, which enables the cleaning device to be brought into contact with an image carrier without applying impact to the image carrier and quickly separated from the image carrier and is simple in structure. <P>SOLUTION: An arm 20 is provided with an elastic member 21 which has sufficient elastic force to bear the weight of the cleaning device 12. A rotating mechanism which drives a cam 15 is constituted of a spring clutch 17. Torque that is sufficient enough to extend the spring is applied via the cam 15, the arm 20 and the elastic member 21. <P>COPYRIGHT: (C)2004,JPO

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【発明の属する技術分野】本発明は、複写機、プリン
タ、ファクシミリ等の画像形成装置に用いられ、像担持
体に備えられる、カム・アーム機構のクリーニング装置
の接離機構に関するものである。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a contacting / separating mechanism of a cleaning device for a cam / arm mechanism, which is used in an image forming apparatus such as a copying machine, a printer, and a facsimile, and which is provided on an image carrier.

【0002】[0002]

【従来の技術】画像形成装置では通常、トナー像を担持
する感光体や中間転写体等、像担持体上の転写残トナー
をクリーニングするためのクリーニング装置が設けられ
ている。クリーニング装置には接離機構が設けられ、画
像転写後に接触してクリーニングし、その後再び離間す
る。接離機構としては、カムとクラッチを用いることが
一般的に知られている。特開2000−110906号
公報の技術では、カム形状及びその形状中心のレイアウ
トと、ワンウェイクラッチを用いることにより、カムの
回転を制御したカム回転制御機構を提案している。しか
し、カム形状は動作タイミングにより必ずしも上記技術
に示す形状にできるわけではなく、また、高価な部品を
使用しているためコスト的に不利であった。また、特開
平5−6108号公報では、支持部材上にバネとカムを
設け、バネの縮み力により支持部材を押し当ててカムに
より離間させる技術を提案している。しかし、バネの縮
み力により衝撃的に押し当ててしまい、その衝撃力でカ
ムが逆方向に回転してしまうことがあった。
2. Description of the Related Art Generally, an image forming apparatus is provided with a cleaning device for cleaning a transfer residual toner on an image bearing member such as a photosensitive member carrying a toner image or an intermediate transfer member. The cleaning device is provided with a contacting / separating mechanism, which contacts and cleans the image after transfer, and then separates again. It is generally known that a cam and a clutch are used as the contact / separation mechanism. The technique disclosed in Japanese Patent Laid-Open No. 2000-110906 proposes a cam rotation control mechanism that controls the rotation of the cam by using a cam shape, a layout of the shape center, and a one-way clutch. However, the cam shape cannot always be the shape shown in the above technique depending on the operation timing, and it is costly because expensive parts are used. Further, Japanese Patent Application Laid-Open No. 5-6108 proposes a technique in which a spring and a cam are provided on a support member, and the support member is pressed by the contracting force of the spring and separated by the cam. However, the compressive force of the spring may cause the cam to push against the cam, causing the cam to rotate in the opposite direction.

【0003】[0003]

【発明が解決しようとする課題】上記問題点に鑑み、本
発明は、クリーニング装置が像担持体に衝撃のないよう
接触するためのクリーニング装置の接離機構を提供する
ことを目的とする。また、簡単な構成で離間動作をさせ
ることを可能とし、コストダウンを図ったクリーニング
装置の接離機構を提供することを目的とする。さらに、
素早くクリーニング装置を離間させることを可能とし、
離間に掛かる時間分の像端持体の周長を短くし、装置の
コンパクト化、及びそれに伴うコストダウンが可能なク
リーニング装置の接離機構を提供することを目的とす
る。
In view of the above problems, it is an object of the present invention to provide a contacting / separating mechanism of a cleaning device for the cleaning device to contact the image bearing member without impact. Another object of the present invention is to provide a contacting / separating mechanism for a cleaning device that enables a separating operation with a simple structure and reduces costs. further,
It is possible to quickly separate the cleaning device,
An object of the present invention is to provide a contacting / separating mechanism for a cleaning device, in which the peripheral length of the image end holding member for the time required for separation is shortened, the device is made compact, and the cost can be reduced accordingly.

【0004】[0004]

【課題を解決するための手段】上記課題を解決するため
に、請求項1に記載の本発明は、カムと、アームと、カ
ムを駆動する回転機構とを有し、カムの回転によりアー
ムの一端を上下させることで、像担持体に対してクリー
ニング装置を接離させるクリーニング装置の接離機構に
おいて、アームは、アームをカムに押しつける方向に加
圧する弾性部材を備えることを特徴とするクリーニング
装置の接離機構とする。請求項2に記載の本発明は、請
求項1記載のクリーニング装置の接離機構において、弾
性部材は、クリーニング装置の自重に抗する弾性力を持
つことを特徴とするクリーニング装置の接離機構とす
る。請求項3に記載の本発明は、請求項1又は2記載の
クリーニング装置の接離機構において、カムを駆動する
回転機構はスプリングクラッチであり、スプリングクラ
ッチのスプリングを広げる力以上のトルクを、カムと、
アームと、弾性部材とを介して与えることを特徴とする
クリーニング装置の接離機構とする。
In order to solve the above-mentioned problems, the present invention according to claim 1 has a cam, an arm, and a rotation mechanism for driving the cam. In the contacting / separating mechanism of the cleaning device that moves the cleaning device toward and away from the image carrier by moving one end up and down, the arm is provided with an elastic member that presses the arm in a direction to press the arm against the cam. The contact and separation mechanism of According to a second aspect of the present invention, in the contacting / separating mechanism of the cleaning device according to the first aspect, the elastic member has an elastic force that resists the weight of the cleaning device. To do. According to a third aspect of the present invention, in the contacting / separating mechanism of the cleaning device according to the first or second aspect, the rotating mechanism that drives the cam is a spring clutch, and a torque greater than a force for expanding the spring of the spring clutch is applied to the cam. When,
The contacting / separating mechanism of the cleaning device is characterized in that it is applied through an arm and an elastic member.

【0005】[0005]

【発明の実施の形態】以下より、本発明の実施の形態に
ついて図に基づき説明する。図1は本発明に係わる画像
形成装置の一例を示すカラーレーザープリンタの概略構
成図である。このカラーレーザープリンタは、感光体
部、帯電部、書込み部、現像部、中間転写部、給紙部、
紙転写部、定着部から成る。感光体部には感光体ベルト
1があり、感光体ベルト1の周りには帯電器2、現像器
3、感光体クリーニング装置4が配置されている。この
感光体ベルト1の表面には有機感光層が形成されてい
る。帯電器2に高電圧を印加することにより感光体ベル
ト1を一様に帯電させる。
BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram of a color laser printer showing an example of an image forming apparatus according to the present invention. This color laser printer includes a photoconductor section, a charging section, a writing section, a developing section, an intermediate transfer section, a sheet feeding section,
It consists of a paper transfer section and a fixing section. A photoconductor belt 1 is provided in the photoconductor portion, and a charging device 2, a developing device 3, and a photoconductor cleaning device 4 are arranged around the photoconductor belt 1. An organic photosensitive layer is formed on the surface of the photosensitive belt 1. By applying a high voltage to the charger 2, the photosensitive belt 1 is uniformly charged.

【0006】カラー画像情報、たとえばコンピュータか
らのカラー画像信号を光信号に変換し、レーザーにてB
lack(以下Bkと記す)、Cyan(同、C)、M
agenta(同、M)、Yellow(同、Y)の画
像信号に対応した光書込みをポリゴンミラー5、f/θ
レンズ6、反射ミラー7を介して行い、感光体ベルト1
上に静電潜像を形成する。この静電潜像は感光体ベルト
1の静電潜像と逆の電荷にて帯電されたトナーを有する
Bk、C、M、Y毎に各現像器3によって帯電トナーを
静電吸着させることにより現像される。中間転写ベルト
8と感光体ベルト1の接触部においては、中間転写ベル
ト8にトナーと逆の電荷を印加することにより中間転写
ベルト8上に上記トナー像を転写する。
Color image information, for example, a color image signal from a computer is converted into an optical signal, and the laser is used for B
rack (hereinafter referred to as Bk), Cyan (the same, C), M
The polygon mirror 5, f / θ is used for optical writing corresponding to the image signals of “agenta” (same as M) and “Yellow” (same as Y).
Through the lens 6 and the reflection mirror 7, the photoreceptor belt 1
Form an electrostatic latent image on top. This electrostatic latent image is obtained by electrostatically adsorbing the charged toner by each developing device 3 for each of Bk, C, M, and Y having toner charged with an electric charge opposite to that of the electrostatic latent image on the photosensitive belt 1. It is developed. At the contact portion between the intermediate transfer belt 8 and the photoreceptor belt 1, the toner image is transferred onto the intermediate transfer belt 8 by applying a charge opposite to the toner to the intermediate transfer belt 8.

【0007】中間転写ベルト8にトナーを転写した後、
感光体ベルト1は感光体クリーニング装置4により転写
残トナー等を清掃され、次の作像に備える。本例はフル
カラー4色現像であるので、この動作を4回行うことに
より、中間転写ベルト8上に4色重ね画像を形成し、さ
らに紙転写ローラ10にトナーと逆の電荷を印加するこ
とによって、これを搬送ローラ9によって送られてきた
転写紙に転写する。この転写紙は定着器11に搬送さ
れ、トナー像を溶融定着する。中間転写ベルト8はトナ
ー像を転写紙に転写した後に中間転写クリーニング装置
12によって転写残トナーなどを清掃され、次の作像に
備える。
After transferring the toner to the intermediate transfer belt 8,
The photoconductor belt 1 is cleaned of the transfer residual toner and the like by the photoconductor cleaning device 4 to prepare for the next image formation. Since this example is full-color four-color development, by performing this operation four times, a four-color superimposed image is formed on the intermediate transfer belt 8, and by applying a charge opposite to the toner to the paper transfer roller 10. , Which is transferred onto the transfer paper sent by the carrying roller 9. This transfer paper is conveyed to the fixing device 11 and fuses and fixes the toner image. After the toner image is transferred onto the transfer paper, the intermediate transfer belt 8 is cleaned of the transfer residual toner and the like by the intermediate transfer cleaning device 12 to prepare for the next image formation.

【0008】次に本発明の接離機構についての説明を行
う。図2は像担持体の一例として中間転写ベルト8を示
すものであり、中間転写クリーニング装置12とその接
離機構の斜視図である。中間転写クリーニング装置12
は中間転写ベルト8へ接触、離間動作を行う。中間転写
クリーニング装置12の両端には軸13と支持部材19
が設けられている。軸13はカラーレーザープリンタ本
体に支持され、中間転写クリーニング装置12は本体に
対して軸13を中心に揺動可能となっている。支持部材
19はアーム20に支持されている。アーム20はカム
15と弾性部材21を備え、カム15は回転機構として
のスプリングクラッチ17によって制御される。また、
中間転写クリーニング装置12は、自重により接触する
際の接触圧を発生させている。
Next, the contacting / separating mechanism of the present invention will be described. FIG. 2 shows an intermediate transfer belt 8 as an example of an image carrier, and is a perspective view of an intermediate transfer cleaning device 12 and its contact / separation mechanism. Intermediate transfer cleaning device 12
Performs contact and separation operations with respect to the intermediate transfer belt 8. A shaft 13 and a supporting member 19 are provided at both ends of the intermediate transfer cleaning device 12.
Is provided. The shaft 13 is supported by the color laser printer main body, and the intermediate transfer cleaning device 12 is swingable with respect to the main body about the shaft 13. The support member 19 is supported by the arm 20. The arm 20 includes a cam 15 and an elastic member 21, and the cam 15 is controlled by a spring clutch 17 as a rotating mechanism. Also,
The intermediate transfer cleaning device 12 generates a contact pressure at the time of contact due to its own weight.

【0009】図3はカム15とスプリングクラッチ17
を示す拡大図である。図3に示すように、カム15は半
回転ステップのスプリングクラッチ17によって半回転
制御を行っている。スプリングクラッチ17の半回転動
作はフラッパタイプのソレノイド22により行われてお
り、図4(a)に示すように、スプリングクラッチ17
は、ソレノイド22をON、つまりカム15を引いた状
態の時に、中間転写クリーニング装置12を中間転写ベ
ルト8に接触させる方向に移動する。また図4(b)に
示すように、ソレノイド22がOFF状態の時、中間転
写クリーニング装置12を中間転写ベルト8から離間す
る方向に移動する。
FIG. 3 shows a cam 15 and a spring clutch 17.
FIG. As shown in FIG. 3, the cam 15 is half-rotated by a spring clutch 17 in half-rotation steps. The half rotation operation of the spring clutch 17 is performed by a flapper type solenoid 22. As shown in FIG.
Moves the intermediate transfer cleaning device 12 in a direction of contacting the intermediate transfer belt 8 when the solenoid 22 is turned on, that is, when the cam 15 is pulled. Further, as shown in FIG. 4B, when the solenoid 22 is in the OFF state, the intermediate transfer cleaning device 12 is moved in the direction of separating from the intermediate transfer belt 8.

【0010】次に、本発明による中間転写クリーニング
装置12の中間転写ベルト8への接離動作を説明する。
図5は本発明の接離機構の動作を示したものである。図
5(a)に示すように、カム15の大径側がアーム20
側にくると、カム15と接触している側のアーム20は
上方に押し上げられる。カム15がアーム20の一端を
上に持ち上げることにより、アーム20の他端が下が
り、この他端に支持されている支持部材19も中間転写
クリーニング装置12の自重により下がることにより中
間転写ベルト8に中間転写クリーニング装置12が接触
する。このとき、弾性部材21は下方への力をもってい
るため、中間転写ベルト8と中間転写クリーニング装置
12との接触は、衝撃的でなく静かに行われる。なお、
弾性部材21としては、中間転写クリーニング装置の自
重に抗し、かつスプリングクラッチ17を適度なトルク
で回転させることができる弾性力を持つバネ部材等を用
いることができる。
Next, the contact / separation operation of the intermediate transfer cleaning device 12 according to the present invention with respect to the intermediate transfer belt 8 will be described.
FIG. 5 shows the operation of the contacting / separating mechanism of the present invention. As shown in FIG. 5A, the larger diameter side of the cam 15 is the arm 20.
When it comes to the side, the arm 20 on the side in contact with the cam 15 is pushed upward. When the cam 15 lifts one end of the arm 20 upward, the other end of the arm 20 is lowered, and the supporting member 19 supported by the other end is also lowered by the weight of the intermediate transfer cleaning device 12 to the intermediate transfer belt 8. The intermediate transfer cleaning device 12 contacts. At this time, since the elastic member 21 has a downward force, the contact between the intermediate transfer belt 8 and the intermediate transfer cleaning device 12 is performed quietly without impact. In addition,
As the elastic member 21, it is possible to use a spring member having an elastic force that resists the weight of the intermediate transfer cleaning device and that can rotate the spring clutch 17 with an appropriate torque.

【0011】また、図5(b)に示すように、カム15
が半回転をし、カム15の小径側がアーム20側にくる
と、アーム20の他端は中間転写クリーニング装置の支
持部材19を押し上げ、中間転写ベルト8から中間転写
クリーニング装置12を離間させる。ソレノイド21が
OFFしスプリングクラッチ17が回転を始めると、カ
ム15はアーム20に取り付けられた弾性部材21によ
り下方への力を受ける。この弾性部材21の力により、
アーム20の中間転写クリーニング装置12側は中間転
写クリーニング装置12を上方に持ち上げる。また、カ
ム15は弾性部材21から力を受けるため、カム15を
回す方向のトルクがかかることとなる。この場合、スプ
リングクラッチ17は内部のスプリングが開く方向とな
るため、ブレーキは利かず、出力軸はカム15にかかる
力により回転させられ、本来の入力ギヤの回転数よりも
速い回転でまわろうとする。この作用により、中間転写
クリーニング装置12の中間転写ベルト8に対する離間
動作は、接触動作よりも短時間となる。中間転写クリー
ニング装置12が離間動作中も中間転写ベルト8は回転
し続けており、中間転写ベルト8周長は転写領域と接離
動作領域とによって決まる。中間転写クリーニング装置
12の離間動作が短縮されることで、離間に掛かる時間
分の中間転写ベルト8の周長を短くすることができ、装
置のコンパクト化、及びそれに伴うコストダウンを行う
ことができる。
Further, as shown in FIG. 5B, the cam 15
Rotates halfway, and when the small diameter side of the cam 15 comes to the arm 20 side, the other end of the arm 20 pushes up the support member 19 of the intermediate transfer cleaning device and separates the intermediate transfer cleaning device 12 from the intermediate transfer belt 8. When the solenoid 21 is turned off and the spring clutch 17 starts rotating, the cam 15 receives downward force by the elastic member 21 attached to the arm 20. By the force of this elastic member 21,
The side of the intermediate transfer cleaning device 12 of the arm 20 lifts the intermediate transfer cleaning device 12 upward. Further, since the cam 15 receives a force from the elastic member 21, a torque in the direction of rotating the cam 15 is applied. In this case, the spring clutch 17 is in the direction in which the internal spring is opened, so the brake is not effective, and the output shaft is rotated by the force applied to the cam 15 and tries to rotate at a speed faster than the original rotation speed of the input gear. . Due to this action, the separating operation of the intermediate transfer cleaning device 12 from the intermediate transfer belt 8 becomes shorter than the contact operation. The intermediate transfer belt 8 continues to rotate even during the separation operation of the intermediate transfer cleaning device 12, and the circumference of the intermediate transfer belt 8 is determined by the transfer area and the contact / separation operation area. Since the separation operation of the intermediate transfer cleaning device 12 is shortened, the peripheral length of the intermediate transfer belt 8 corresponding to the time required for separation can be shortened, and the device can be made compact and the cost can be reduced accordingly. .

【0012】即ち、本発明を用いることで、中間転写ク
リーニング装置12が接触する際にはソフトに、離間す
る際には素早く短時間で動作させることができる。な
お、本実施形態では像担持体の一例として中間転写ベル
トについて説明したが、本発明はこれに限定されるもの
ではなく、他のクリーニング装置の接離機構にも好適に
用いることができる。また、像担持体は本実施形態のよ
うにベルト状でもよいし、ドラム状のものでもよい。
That is, by using the present invention, the intermediate transfer cleaning device 12 can be operated softly when it comes into contact with it, and quickly when it is separated from it. In the present embodiment, the intermediate transfer belt has been described as an example of the image bearing member, but the present invention is not limited to this and can be suitably used for the contact / separation mechanism of other cleaning devices. Further, the image carrier may have a belt shape as in the present embodiment or a drum shape.

【0013】[0013]

【発明の効果】以上説明したように、請求項1記載の本
発明によれば、弾性部材によってアーム部材をカムに押
しつける方向に力を掛けることにより、クリーニング装
置が衝撃的に像担持体に接触することを防止することが
可能なクリーニング装置の接離機構を提供することがで
きる。また、請求項2記載の本発明によれば、弾性部材
にクリーニング装置を持ち上げられるだけの弾性力を持
たせることにより、簡単な機構で離間動作をさせること
が可能なクリーニング装置の接離機構を提供することが
できる。請求項3記載の発明において、弾性部材にスプ
リングクラッチのスプリングを広げることができるだけ
の弾性力を持たせることにより、素早くクリーニング装
置を離間させ、装置のコンパクト化、及びそれに伴うコ
ストダウンが可能なクリーニング装置の接離機構を提供
することができる。
As described above, according to the present invention of claim 1, the cleaning device impacts the image carrier by impacting the arm member against the cam by the elastic member. It is possible to provide the contacting / separating mechanism of the cleaning device capable of preventing the above. According to the second aspect of the present invention, the contacting / separating mechanism of the cleaning device capable of performing the separating operation with a simple mechanism by providing the elastic member with an elastic force enough to lift the cleaning device. Can be provided. In the invention according to claim 3, the elastic member is provided with an elastic force capable of expanding the spring of the spring clutch, so that the cleaning device can be quickly separated, the device can be made compact, and the cost can be reduced accordingly. A device contact / separation mechanism can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明に係わるレーザーカラープリンタの概略
構成図である。
FIG. 1 is a schematic configuration diagram of a laser color printer according to the present invention.

【図2】中間転写クリーニング装置とその接離機構を示
す斜視図である。
FIG. 2 is a perspective view showing an intermediate transfer cleaning device and a contact / separation mechanism thereof.

【図3】カムとスプリングクラッチを示す斜視図であ
る。
FIG. 3 is a perspective view showing a cam and a spring clutch.

【図4】ソレノイドのON・OFF状態を示す側面図で
ある。
FIG. 4 is a side view showing an ON / OFF state of a solenoid.

【図5】接離機構の動作を示す側面図であり、(a)は
中間転写ベルトと中間転写クリーニング装置の接触時、
(b)は移動時、(c)は離間時の接離機構の状態であ
る。
FIG. 5 is a side view showing the operation of the contacting / separating mechanism, FIG.
(B) shows a state of the contacting / separating mechanism at the time of moving, and (c) shows a state of the separating mechanism.

【符号の説明】[Explanation of symbols]

1 感光体ベルト 2 帯電器 3 現像器 4 感光体クリーニング装置 5 ポリゴンミラー 6 f/θレンズ 7 反射ミラー 8 中間転写ベルト 9 搬送ローラ 10 紙転写ローラ 11 定着器 12 中間転写クリーニング装置 13 軸 15 カム 17 スプリングクラッチ 19 支持部材 20 アーム 21 弾性部材 22 ソレノイド 1 photoconductor belt 2 charger 3 developer 4 Photoconductor cleaning device 5 polygon mirror 6 f / θ lens 7 reflection mirror 8 Intermediate transfer belt 9 Conveyor rollers 10 Paper transfer roller 11 Fixing device 12 Intermediate transfer cleaning device 13 axes 15 cams 17 Spring clutch 19 Support member 20 arms 21 Elastic member 22 solenoid

フロントページの続き Fターム(参考) 2H134 GA01 GA06 GB02 HD05 HD06 HD08 HD11 KG04 KG08 KH03 KH09 2H200 GA16 GA24 GA34 GA44 GA47 GB12 JC04 JC12 LA24 LB02 LB13 Continued front page    F-term (reference) 2H134 GA01 GA06 GB02 HD05 HD06                       HD08 HD11 KG04 KG08 KH03                       KH09                 2H200 GA16 GA24 GA34 GA44 GA47                       GB12 JC04 JC12 LA24 LB02                       LB13

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 カムと、アームと、カムを駆動する回転
機構とを有し、 カムの回転によりアームの一端を上下させることで、像
担持体に対してクリーニング装置を接離させるクリーニ
ング装置の接離機構において、 アームは、アームをカムに押しつける方向に加圧する弾
性部材を備えることを特徴とするクリーニング装置の接
離機構。
1. A cleaning device having a cam, an arm, and a rotation mechanism for driving the cam, wherein one end of the arm is moved up and down by rotation of the cam to bring the cleaning device into and out of contact with the image carrier. In the contact / separation mechanism, the arm includes an elastic member that pressurizes the arm in a direction to press the arm against the cam.
【請求項2】 請求項1記載のクリーニング装置の接離
機構において、 弾性部材は、クリーニング装置の自重に抗する弾性力を
持つことを特徴とするクリーニング装置の接離機構。
2. The contacting / separating mechanism of the cleaning device according to claim 1, wherein the elastic member has an elastic force against the weight of the cleaning device.
【請求項3】 請求項1又は2記載のクリーニング装置
の接離機構において、 カムを駆動する回転機構はスプリングクラッチであり、 スプリングクラッチのスプリングを広げる力以上のトル
クを、カムと、アームと、弾性部材とを介して与えるこ
とを特徴とするクリーニング装置の接離機構。
3. The contacting / separating mechanism of the cleaning device according to claim 1 or 2, wherein the rotating mechanism for driving the cam is a spring clutch, and a torque greater than a force for expanding the spring of the spring clutch is applied to the cam and the arm. A contacting / separating mechanism of a cleaning device, characterized by being applied via an elastic member.
JP2002078988A 2002-03-20 2002-03-20 Contact/separation mechanism for cleaning device Pending JP2003280470A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2002078988A JP2003280470A (en) 2002-03-20 2002-03-20 Contact/separation mechanism for cleaning device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2002078988A JP2003280470A (en) 2002-03-20 2002-03-20 Contact/separation mechanism for cleaning device

Publications (1)

Publication Number Publication Date
JP2003280470A true JP2003280470A (en) 2003-10-02

Family

ID=29228641

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2002078988A Pending JP2003280470A (en) 2002-03-20 2002-03-20 Contact/separation mechanism for cleaning device

Country Status (1)

Country Link
JP (1) JP2003280470A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7484142B2 (en) 2019-11-26 2024-05-16 コニカミノルタ株式会社 Secondary transfer device and image forming apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7484142B2 (en) 2019-11-26 2024-05-16 コニカミノルタ株式会社 Secondary transfer device and image forming apparatus

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