JP3326584B2 - Image forming device - Google Patents

Image forming device

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Publication number
JP3326584B2
JP3326584B2 JP17894995A JP17894995A JP3326584B2 JP 3326584 B2 JP3326584 B2 JP 3326584B2 JP 17894995 A JP17894995 A JP 17894995A JP 17894995 A JP17894995 A JP 17894995A JP 3326584 B2 JP3326584 B2 JP 3326584B2
Authority
JP
Japan
Prior art keywords
image forming
image
forming apparatus
developing
forming body
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.)
Expired - Fee Related
Application number
JP17894995A
Other languages
Japanese (ja)
Other versions
JPH0934334A (en
Inventor
雅弘 重富
直人 徳武
厳恭 宮本
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.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
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 Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP17894995A priority Critical patent/JP3326584B2/en
Publication of JPH0934334A publication Critical patent/JPH0934334A/en
Application granted granted Critical
Publication of JP3326584B2 publication Critical patent/JP3326584B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】本発明は、感光体上の潜像を現像
してトナー像化する静電方式の画像形成装置に関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrostatic image forming apparatus for developing a latent image on a photoreceptor into a toner image.

【0002】[0002]

【従来の技術】ドラム状の像形成体(感光体ドラム)の
付近に帯電手段、像露光手段および現像手段を設け、感
光体の回転中に帯電、像露光及び現像を行って感光体上
にトナー像を形成し、転写手段によって記録紙等の転写
材上に転写するモノクロの画像形成装置は広く用いられ
ている。ここで現像装置としては一般に磁気ロールを内
包して回転する現像スリーブ上に現像剤を付着させて感
光体と近接して一定間隙をもった現像域まで搬送し、印
加された現像バイアスの下に現像を行っている。
2. Description of the Related Art A charging means, an image exposing means and a developing means are provided in the vicinity of a drum-shaped image forming body (photosensitive drum). A monochrome image forming apparatus that forms a toner image and transfers it onto a transfer material such as recording paper by a transfer unit is widely used. Here, as a developing device, a developer is generally attached to a rotating developing sleeve including a magnetic roll, and is conveyed to a developing area having a certain gap in close proximity to the photoconductor, and under a developing bias applied thereto. Developing.

【0003】また多色のカラー画像を記録する装置とし
ては、画像形成に必要な帯電手段、像露光手段ならびに
多色の現像剤を内蔵した現像手段を像形成体の周囲に配
置して、像形成体の回転に同期して各色毎の帯電、像露
光ならびに現像を順次行ってトナー像を重ね合わせてカ
ラーのトナー像を形成し、これを一括して転写材上に転
写する形式のカラー画像形成装置が知られている。
As an apparatus for recording a multicolor image, a charging means, an image exposure means and a developing means containing a multicolor developer which are necessary for image formation are arranged around an image forming body. A color image of a type in which charging, image exposure and development for each color are sequentially performed in synchronization with the rotation of the formed body to superimpose the toner images to form a color toner image, which is collectively transferred onto a transfer material. Forming devices are known.

【0004】かかるカラー画像形成装置においては、像
形成体である感光体上のトナー像の上にさらにトナー像
を形成する構成となっていて、現像剤を担持した現像ス
リーブを感光体面より僅かの間隙をもって離間した位置
に設定し、直流成分と交流成分が重畳した現像バイアス
電圧を印加することによって現像スリーブの担持するト
ナーを感光体側に飛翔させて潜像の現像を行ういわゆる
非接触現像法がとられている。
In such a color image forming apparatus, a toner image is further formed on a toner image on a photoreceptor as an image forming body, and a developing sleeve carrying a developer is slightly spaced from the surface of the photoreceptor. A so-called non-contact development method is used in which a toner is carried on a developing sleeve to a photoreceptor side by applying a developing bias voltage in which a DC component and an AC component are superimposed, and the latent image is developed by applying a developing bias voltage in which a DC component and an AC component are superimposed. Has been taken.

【0005】[0005]

【発明が解決しようとする課題】現像スリーブと感光体
面との間隙量は、現像スリーブの回転軸上の両端に設け
たコロ部材を感光体面の非画像領域に当接させることに
よって設定されるが、この非画像領域にクリーニングに
より転写後の画像領域より除去したトナー粉が再付着し
たりすると前記の間隙量が変化して現像能力が低下した
りあるいは振動を起こして感光体面に対する像の現像ム
ラが生じて、画質を損なうおそれがある。
The gap between the developing sleeve and the photoreceptor surface is set by bringing roller members provided at both ends on the rotation shaft of the developing sleeve into contact with a non-image area on the photoreceptor surface. When the toner powder removed from the image area after the transfer by cleaning adheres to the non-image area, the gap amount changes and the developing capacity is reduced, or vibration occurs to cause uneven development of the image on the photoreceptor surface. And the image quality may be impaired.

【0006】本発明は、この点を解決して改良した結
果、極めて簡易な手段により感光体上の非画像領域への
トナー粉の再付着を効率良く防止することの出来る画像
形成装置の提供を目的としたものである。
The present invention solves this problem and as a result, provides an image forming apparatus capable of efficiently preventing toner powder from re-adhering to a non-image area on a photoreceptor by extremely simple means. It is intended.

【0007】[0007]

【課題を解決するための手段】上記目的は、装置本体に
対して装脱可能なカートリッジ内に納められたクリーニ
ング装置およびドラム状の像形成体と、前記像形成体の
両側端部の非画像領域に当接される突当部材を介して前
記像形成体と所定の間隙を以て対応配置される現像スリ
ーブを含む現像装置とを有する画像形成装置において、
前記像形成体の回転方向にみて前記クリーニング装置と
前記現像装置との間にわたって前記突当部材の当接箇所
に対応した前記像形成体の非画像領域を覆うシール部材
を有し、前記シール部材は、その両端部に取り付けられ
た弾性部材を介して前記カートリッジに取り付けられて
いる、ことを特徴とする画像形成装置によって達成され
る。
SUMMARY OF THE INVENTION The above object is achieved by providing an apparatus main body.
Kleini in a removable cartridge
Imaging device and drum-shaped image forming body;
Front through the abutting members abutting the non-image areas on both side edges
A developing slot correspondingly arranged with a predetermined gap from the image forming body
An image forming apparatus having a developing device including
The cleaning device as viewed in the rotation direction of the image forming body;
A contact portion of the abutting member over the developing device
Sealing member covering a non-image area of the image forming body corresponding to
The seal member is attached to both ends thereof
Attached to the cartridge via an elastic member
This is achieved by an image forming apparatus characterized in that:

【0008】なお、前記シール部材は高密度ポリエチレ
ン材によって形成されていること、また、前記現像装置
は多色の現像剤を内蔵した複数の現像装置からなり、前
記像形成体上にトナー像を重ね合わせてカラー画像を形
成すること、更に、前記像形成体の両側端部の非画像領
域と当接される突当部材を介して当該像形成体と所定の
間隙を以て対向配置される転写ベルトを張架するプーリ
を含む転写ベルト装置を有していることがそれぞれ好ま
しい実施態様である。
The sealing member is made of high-density polyethylene.
The developing device
Consists of multiple developing devices with multi-colored
A color image is formed by superimposing a toner image on an image forming body.
And a non-image area on both side edges of the image forming body.
A predetermined contact with the image forming body via an abutting member abutting the area.
Pulley that stretches a transfer belt that is placed opposite to a gap
It is a preferred embodiment to have a transfer belt device including the following.

【0009】[0009]

【実施例】本発明の一実施例を図1ないし図4によって
説明する。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to FIGS.

【0010】図1に示すカラー画像形成装置の断面構成
図において、10はドラム状の像形成体である感光体ド
ラムで、周面に例えばOPC感光体を備え、接地された
状態で時計方向へと駆動回転される。
In the cross-sectional view of the color image forming apparatus shown in FIG. 1, reference numeral 10 denotes a photosensitive drum which is a drum-shaped image forming body. Is driven and rotated.

【0011】12はスコロトロン帯電器で所定電位を保
持されたグリッドと放電ワイヤによるコロナ放電によっ
て感光体ドラム10に一様な帯電を行い所定の電位を与
える。このスコロトロン帯電器12による帯電に先立っ
て感光体の履歴を除去するために発光ダイオード等から
成る帯電前露光装置(PCL)11の露光により予め感
光体の除電が行われる。
Reference numeral 12 denotes a scorotron charger, which uniformly charges the photosensitive drum 10 by corona discharge by a grid and a discharge wire, and applies a predetermined potential. Prior to the charging by the scorotron charger 12, in order to remove the history of the photoconductor, the photoconductor is preliminarily discharged by exposure of a pre-charging exposure device (PCL) 11 composed of a light emitting diode or the like.

【0012】感光体ドラム10の帯電後レーザ書込み装
置13により画像信号に基づいた像露光が開始される。
この像露光はコンピュータあるいは画像読み取り装置か
ら出力される各色に対応した画像信号を画像信号処理部
によって処理を行ったのちレーザ書込み装置13に入力
して感光体ドラム10上に順次像露光を行い、各色に対
応した潜像として形成される。
After the photosensitive drum 10 is charged, the laser writing device 13 starts image exposure based on the image signal.
In this image exposure, an image signal corresponding to each color output from a computer or an image reading device is processed by an image signal processing unit, and then input to a laser writing device 13 to sequentially perform image exposure on the photosensitive drum 10. It is formed as a latent image corresponding to each color.

【0013】レーザ書込み装置13は、図示しないレー
ザダイオードを発光光源とし、回転するポリゴンミラー
131、fθレンズ132を介し反射鏡M1,M2,M
3を経てドラム面に像露光の主走査を行い、ドラムの回
転に伴う副走査によって潜像の形成を行う。
The laser writing device 13 uses a laser diode (not shown) as a light emitting light source, and uses a rotating polygon mirror 131 and an fθ lens 132 to form reflection mirrors M1, M2, M
The main scanning of image exposure is performed on the drum surface via 3, and a latent image is formed by sub-scanning accompanying rotation of the drum.

【0014】一方感光体ドラム10の周面にはイエロー
(Y)、マゼンタ(M)、シアン(C)および黒(K)
の各トナーと磁性キャリアから成る現像剤をそれぞれ内
蔵した現像装置20が設けられていて、先ずイエロー
(Y)の潜像が形成された段階でイエロー(Y)の現像
剤を内蔵する現像装置20(Y)が駆動され、次いでマ
ゼンタの潜像が形成された段階でマゼンタ(M)の現像
剤を内蔵する現像装置20(M)が駆動され、同様にし
て各潜像の形成毎に順次現像装置20(C)および20
(K)が駆動されて非接触現像が行われ、それによって
ドラム面上に各色のトナー像の重ね合わせによカラー
画像が形成される。
On the other hand, on the peripheral surface of the photosensitive drum 10, yellow (Y), magenta (M), cyan (C) and black (K)
A developing device 20 having a built-in developer composed of each toner and a magnetic carrier is provided. First, at the stage when a yellow (Y) latent image is formed, a developing device 20 having a built-in yellow (Y) developer is provided. (Y) is driven, and then at the stage where the magenta latent image is formed, the developing device 20 (M) containing the magenta (M) developer is driven. Devices 20 (C) and 20
(K) is a non-contact development is performed is driven, whereby that by on the drum surface superposition of toner images of each color
An image is formed.

【0015】前記の各現像は、現像剤を担持するそれぞ
れの現像スリーブ21をドラム面に対し所定の間隙を置
いた位置に設定して非接触の状態で現像を行ういわゆる
非接触現像法がとられていて、現像に際し現像スリーブ
21と感光体ドラム10の間には直流と交流を重畳した
現像バイアス電圧を印加して現像スリーブ21上の現像
剤中のトナーを潜像側に飛翔させ潜像部分に付着させて
顕像化が行われる。
Each of the above-mentioned developments is performed by a so-called non-contact development method in which development is carried out in a non-contact state by setting the respective development sleeves 21 carrying the developer at a predetermined gap from the drum surface. During development, a developing bias voltage in which DC and AC are superimposed is applied between the developing sleeve 21 and the photosensitive drum 10 to cause toner in the developer on the developing sleeve 21 to fly to the latent image side to cause the latent image to develop. Visualization is performed by attaching to the portion.

【0016】一方では給紙カセット30より半月ローラ
31、搬送ローラ32の作動により記録紙Pが搬出され
てタイミングローラ33に搬送され、感光体ドラム10
上のトナー像に同期して転写ベルト装置40に給紙され
る。
On the other hand, the recording paper P is conveyed out of the paper feed cassette 30 by the operation of the half-moon roller 31 and the conveying roller 32 and conveyed to the timing roller 33, where the photosensitive drum 10 is moved.
The sheet is fed to the transfer belt device 40 in synchronization with the upper toner image.

【0017】転写ベルト装置40はローラの回転により
感光体ドラム10の周面と等速で反時計方向へと循環し
て搬送されるプーリ43とプーリ44との間に張架され
た転写ベルト41と転写電極42とから構成され、ドラ
ム周面との圧着面に記録紙Pを挟着搬送してドラム上の
トナー像を記録紙Pに転写する。なお転写ベルト装置4
0は転写時にはドラム周面と圧着状態にあるが、非転写
時にはプーリ44はプーリ43を回動中心として時計方
向に回動し転写ベルト41は感光体ドラム10の周面に
対して非接触状態となる。
The transfer belt device 40 is a transfer belt 41 stretched between a pulley 43 and a pulley 44 circulated and conveyed counterclockwise at a constant speed on the peripheral surface of the photosensitive drum 10 by rotation of the roller. And a transfer electrode 42. The toner image on the drum is transferred onto the recording paper P by nipping and transporting the recording paper P on the pressure-contact surface with the drum peripheral surface. The transfer belt device 4
0 is in a pressure-contact state with the drum peripheral surface at the time of transfer, but at the time of non-transfer, the pulley 44 rotates clockwise around the pulley 43 and the transfer belt 41 is in a non-contact state with the peripheral surface of the photosensitive drum 10. Becomes

【0018】トナー像の転写を受けた記録紙Pは感光体
ドラム10の周面より分離して定着装置50へと搬送さ
れ、熱ローラ51と圧着ローラ52に挟着搬送される間
にトナーを溶着しそのあと搬送ローラ53、排紙ローラ
54を介して装置上部に排出される。
The recording paper P to which the toner image has been transferred is separated from the peripheral surface of the photosensitive drum 10 and is conveyed to the fixing device 50, and the toner is conveyed while being held between the heat roller 51 and the pressure roller 52. After being welded, the sheet is discharged to the upper portion of the apparatus via a conveying roller 53 and a sheet discharging roller 54.

【0019】これに並行して記録紙Pを分離した感光体
ドラム10は、圧接状態となったクリーニング装置のブ
レード14によって残留トナーを除去、清掃し次なる画
像形成のプロセスに入る。
In parallel with this, the photosensitive drum 10 from which the recording paper P has been separated removes and cleans the residual toner by the blade 14 of the cleaning device in a pressed state, and enters the next image forming process.

【0020】図2は図1における矢示AA断面の現像ス
リーブ部分を示したもので、各現像スリーブ21はドラ
ム面に対する突当部材としてそれぞれの両軸端部に回動
自在の突当コロ22を備えていて、現像装置20に加え
られる付勢力(矢示B)により前記の突当コロ22を感
光体ドラム10の両側端部の非画像領域10Aに当接し
た状態でタイミングベルトVを介して駆動回動される。
FIG. 2 shows a developing sleeve portion having a section taken along the line AA shown in FIG. 1. Each developing sleeve 21 is a member for abutting against the drum surface, and a rotatable abutting roller 22 is provided at each end of each shaft. And the urging force (arrow B) applied to the developing device 20 causes the abutting roller 22 to abut on the non-image areas 10A on both side ends of the photosensitive drum 10 via the timing belt V. Drive.

【0021】またプーリ43を回動中心として退避する
転写ベルト装置40においても、転写ベルト41を張架
するプーリ44の両側端にはプーリ径より大径の回動可
能とした突当コロが設けられていて、転写時には突当コ
ロが感光体ドラム10の両側端部の非画像領域10Aに
当接した状態で、転写ベルト41は回動する。
Also in the transfer belt device 40 which retracts with the pulley 43 as the center of rotation, abutting rollers having a diameter larger than the pulley diameter are provided at both ends of the pulley 44 on which the transfer belt 41 is stretched. The transfer belt 41 rotates in a state in which the abutting rollers contact the non-image areas 10 </ b> A at both ends of the photosensitive drum 10 during transfer.

【0022】図3は感光体ドラム10の非画像領域10
Aに対応するカートリッジ60の断面図、また図4はそ
れを展開した斜視図を示したもので、カラー画像形成装
置本体に対して装脱を可能としたカートリッジ60は、
感光体ドラム10とクリーニング装置とを一体としてい
て、クリーニング装置のブレード14と現像装置20
(Y)の突当コロ22との間の前記の現像装置20の突
当コロ22に当接し、或いは転写ベルト装置40のプー
リ44の突当コロの当接する非画像領域10Aに面する
位置には例えば樹脂材等によって成形した支持部60A
および60Bをカートリッジ60の両側部分に突設して
いる。
FIG. 3 shows a non-image area 10 of the photosensitive drum 10.
A is a cross-sectional view of the cartridge 60 corresponding to A, and FIG. 4 is a perspective view in which the cartridge 60 is developed.
The photosensitive drum 10 and the cleaning device are integrated, and the blade 14 of the cleaning device and the developing device 20 are integrated.
(Y) at a position facing the non-image area 10 </ b> A where the abutting roller 22 of the developing device 20 abuts against the abutting roller 22 of the developing device 20 between the abutting roller 22 and the abutting roller 22 of the transfer belt device 40. Is a supporting portion 60A formed of, for example, a resin material.
And 60B project from both sides of the cartridge 60.

【0023】前記の支持部60Aおよび60Bには、樹
脂材、好ましくは可撓性の高密度ポリエチレンシート等
の低摩擦係数でトナー付着が生じにくいリボン状の樹脂
シートから成るシール部材70をその両端部において貼
着した、例えば発泡ウレタンから成るスポンジ状の弾性
部材71Aおよび71Bが貼着によって取付けられてい
る。前記各貼着には両面貼着テープTが好ましく使用さ
れる。
A seal member 70 made of a resin material, preferably a ribbon-shaped resin sheet such as a flexible high-density polyethylene sheet or the like, which has a low coefficient of friction and hardly causes toner adhesion, is attached to both ends of the support portions 60A and 60B. The sponge-like elastic members 71A and 71B made of, for example, urethane foam, which are attached at the portions, are attached by attachment. A double-sided adhesive tape T is preferably used for each of the above adhesives.

【0024】前記のシール部材70はその可撓性により
前記の非画像領域10Aに沿って湾曲しさらに前記の弾
性部材71Aおよび71Bの備える弾性作用によりほぼ
均等な圧力分布をもって非画像領域10Aのドラム面に
摺接される。
The sealing member 70 is bent along the non-image area 10A due to its flexibility, and the drum of the non-image area 10A has a substantially uniform pressure distribution by the elastic action of the elastic members 71A and 71B. Sliding contact with the surface.

【0025】シール部材70としては0.1mm前後の
厚さをもつ高密度ポリエチレンシートが適しており、ま
た弾性部材71Aおよび71Bとしては発泡ウレタンが
適していてシール部材70のドラム面に対する圧接荷重
がドラムの回転機能には全く支障を与えない程度の弾性
力を備えるものが使用される。
A high-density polyethylene sheet having a thickness of about 0.1 mm is suitable for the sealing member 70, and urethane foam is suitable for the elastic members 71A and 71B. A drum having an elastic force that does not hinder the rotation function of the drum is used.

【0026】前記のシール部材70は、各現像装置20
の突当コロ22の方向に回転し移動する感光体ドラム1
0の非画像領域10Aをクリーニングによって飛散した
トナー粉とか記録紙Pの搬送部より発生した紙粉やほこ
りの付着より保護するので、各突当コロ22は何れもド
ラム面に対し常に直接当接され、その間にトナー等が介
在することがないので、現像スリーブ21のドラム面に
対するいわゆる現像間隙が常に正確に設定されて適正な
非接触現像が維持される。
The above-mentioned sealing member 70 is provided for each developing device 20.
Drum 1 that rotates and moves in the direction of the abutting roller 22
The non-image area 10A is protected from the adhesion of toner powder scattered by cleaning or paper dust or dust generated from the conveyance section of the recording paper P, so that each abutting roller 22 always directly abuts the drum surface. Since no toner or the like is interposed therebetween, a so-called developing gap with respect to the drum surface of the developing sleeve 21 is always accurately set, and proper non-contact development is maintained.

【0027】なお実施例で説明したカラー画像形成装置
は、感光体ドラムの複数回転中にカラーのトナー像を重
ね合わせて多色のカラー画像を得るようにしたカラー画
像形成装置であるが、本発明はこれに限定されるもので
はなく、モノクロの画像形成装置は勿論、例えば感光体
ドラムの近傍に複数組の帯電手段・像露光手段・現像手
段を設け、感光体ドラムの一回転中に多色のカラー像を
重ね合わすようにしたカラー画像形成装置にも適用され
ることは勿論である。
The color image forming apparatus described in the embodiment is a color image forming apparatus which obtains a multicolor image by superimposing color toner images during a plurality of rotations of the photosensitive drum. The invention is not limited to this. For example, a plurality of sets of charging means, image exposing means, and developing means are provided in the vicinity of the photosensitive drum, not to mention a monochrome image forming apparatus, and the number of sets is increased during one rotation of the photosensitive drum. Of course, the present invention is also applied to a color image forming apparatus in which color images of colors are superimposed.

【0028】[0028]

【発明の効果】本発明により、現像装置の備える現像ス
リーブと感光体面とのいわゆる現像間隙が常に一定の値
に維持されることとなり、その結果安定した非接触現像
により或いは接触現像により、高品質の画像を形成する
ことの出来る画像形成装置が提供されることとなった。
According to the present invention, the so-called developing gap between the developing sleeve of the developing device and the photosensitive member surface is always maintained at a constant value. As a result, high quality can be obtained by stable non-contact development or contact development. An image forming apparatus capable of forming an image of the type described above is provided.

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

【図1】カラー画像形成装置の断面構成図。FIG. 1 is a cross-sectional configuration diagram of a color image forming apparatus.

【図2】カラー画像形成装置の要部断面図。FIG. 2 is a sectional view of a main part of the color image forming apparatus.

【図3】カートリッジの要部断面図。FIG. 3 is a sectional view of a main part of the cartridge.

【図4】カートリッジの要部斜視図。FIG. 4 is a perspective view of a main part of the cartridge.

【符号の説明】[Explanation of symbols]

10 感光体ドラム 10A 非画像領域 11 PCL 12 スコロトロン帯電器 13 レーザ書込み装置 14 クリーニングブレード 20 現像装置 21 現像スリーブ 22 突当コロ 30 給紙カセット 40 転写ベルト装置 50 定着装置 60 カートリッジ 60A,60B 支持部 70 シール部材 71A,71B 弾性部材 DESCRIPTION OF SYMBOLS 10 Photoreceptor drum 10A Non-image area 11 PCL 12 Scorotron charger 13 Laser writing device 14 Cleaning blade 20 Developing device 21 Developing sleeve 22 Hitting roller 30 Feeding cassette 40 Transfer belt device 50 Fixing device 60 Cartridge 60A, 60B Supporting part 70 Seal member 71A, 71B Elastic member

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平5−100560(JP,A) 特開 平4−212184(JP,A) 特開 平5−281848(JP,A) 特開 平6−27794(JP,A) 特開 平5−119626(JP,A) 特開 平8−292703(JP,A) 特開 平8−292642(JP,A) 特開 平3−267961(JP,A) 特開 平7−28377(JP,A) 特開 平6−180539(JP,A) 特開 昭61−55661(JP,A) 実開 平3−14655(JP,U) 実開 平4−1561(JP,U) 実開 平3−14658(JP,U) 実開 昭63−118057(JP,U) (58)調査した分野(Int.Cl.7,DB名) G03G 21/18 ────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-5-100560 (JP, A) JP-A-4-212184 (JP, A) JP-A 5-281848 (JP, A) JP-A-5-281848 27794 (JP, A) JP-A-5-119626 (JP, A) JP-A-8-292703 (JP, A) JP-A 8-2922642 (JP, A) JP-A-3-269691 (JP, A) JP-A-7-28377 (JP, A) JP-A-6-180539 (JP, A) JP-A-61-55661 (JP, A) JP-A-3-14655 (JP, U) JP-A-4-1561 (JP, U) JP 3-14658 (JP, U) JP 61-118057 (JP, U) (58) Fields investigated (Int. Cl. 7 , DB name) G03G 21/18

Claims (4)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 装置本体に対して装脱可能なカートリッ
ジ内に納められたクリーニング装置およびドラム状の像
形成体と、前記像形成体の両側端部の非画像領域に当接
される突当部材を介して前記像形成体と所定の間隙を以
て対応配置される現像スリーブを含む現像装置とを有す
る画像形成装置において、 前記像形成体の回転方向にみて前記クリーニング装置と
前記現像装置との間にわたって前記突当部材の当接箇所
に対応した前記像形成体の非画像領域を覆うシール部材
を有し、 前記シール部材は、その両端部に取り付けられた弾性部
材を介して前記カートリッジに取り付けられている、 ことを特徴とする画像形成装置。
1. A cartridge which is detachable from an apparatus body.
Cleaning device and drum-shaped image stored inside
Abuts a non-image area on both sides of the image forming body with the image forming body
A predetermined gap from the image forming body through the abutting member
And a developing device including a developing sleeve corresponding to the developing device.
An image forming apparatus, wherein the cleaning device and the cleaning device are viewed from the rotation direction of the image forming body.
A contact portion of the abutting member over the developing device
Sealing member for covering the non-image area of the image forming body corresponding to
Has the seal member has an elastic portion attached to both ends thereof
An image forming apparatus attached to the cartridge via a material .
【請求項2】 前記シール部材は高密度ポリエチレン材
によって形成されることを特徴とする請求項1に記載の
画像形成装置。
2. The sealing member is made of a high-density polyethylene material.
The image forming apparatus according to claim 1, wherein the image forming apparatus is formed by:
【請求項3】 前記現像装置は多色の現像剤を内蔵した
複数の現像装置からなり、前記像形成体上にトナー像を
重ね合わせてカラー画像を形成することを特徴とする請
求項1に記載の画像形成装置。
3. The developing device contains a multicolor developer.
A plurality of developing devices for forming a toner image on the image forming body.
A color image forming method for forming a color image by superimposing
The image forming apparatus according to Motomeko 1.
【請求項4】 前記装置は、前記像形成体の両側端部の
非画像領域と当接される突当部材を介して当該像形成体
と所定の間隙を以て対向配置される転写ベルトを張架す
るプーリを含む転写ベルト装置を有することを特徴とす
る請求項1に記載の画像形成装置。
4. The image forming apparatus according to claim 1 , wherein the image forming body includes two side end portions.
The image forming body via an abutting member contacting the non-image area
And a transfer belt that is arranged to face with a predetermined gap
A transfer belt device including a pulley
The image forming apparatus according to claim 1 .
JP17894995A 1995-07-14 1995-07-14 Image forming device Expired - Fee Related JP3326584B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17894995A JP3326584B2 (en) 1995-07-14 1995-07-14 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17894995A JP3326584B2 (en) 1995-07-14 1995-07-14 Image forming device

Publications (2)

Publication Number Publication Date
JPH0934334A JPH0934334A (en) 1997-02-07
JP3326584B2 true JP3326584B2 (en) 2002-09-24

Family

ID=16057475

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17894995A Expired - Fee Related JP3326584B2 (en) 1995-07-14 1995-07-14 Image forming device

Country Status (1)

Country Link
JP (1) JP3326584B2 (en)

Also Published As

Publication number Publication date
JPH0934334A (en) 1997-02-07

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