JPS5934555A - Process kit and image forming device with process kit - Google Patents

Process kit and image forming device with process kit

Info

Publication number
JPS5934555A
JPS5934555A JP57145801A JP14580182A JPS5934555A JP S5934555 A JPS5934555 A JP S5934555A JP 57145801 A JP57145801 A JP 57145801A JP 14580182 A JP14580182 A JP 14580182A JP S5934555 A JPS5934555 A JP S5934555A
Authority
JP
Japan
Prior art keywords
developing device
photosensitive drum
shutter
image forming
process kit
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
Application number
JP57145801A
Other languages
Japanese (ja)
Other versions
JPH029344B2 (en
Inventor
Masahiro Goto
正弘 後藤
Tsutomu Toyono
豊野　勉
Masao Yoshikawa
吉河　雅雄
Fumitaka Kan
簡　文隆
Kimio Nakahata
中畑　公生
Noritoshi Yoshida
吉田　宣俊
Taku Hino
日野　卓
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.)
Canon Inc
Original Assignee
Canon 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 Canon Inc filed Critical Canon Inc
Priority to JP57145801A priority Critical patent/JPS5934555A/en
Publication of JPS5934555A publication Critical patent/JPS5934555A/en
Publication of JPH029344B2 publication Critical patent/JPH029344B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
    • G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604—Arrangement or disposition of the entire apparatus
    • G03G21/1623—Means to access the interior of the apparatus
    • G03G21/1628—Clamshell type
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1661—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus
    • G03G21/1671—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements means for handling parts of the apparatus in the apparatus for the photosensitive element
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
    • G03G2221/1609—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element protective arrangements for preventing damage
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
    • G03G2221/1609—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element protective arrangements for preventing damage
    • G03G2221/1612—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element protective arrangements for preventing damage plural shutters for openings of process cartridge
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/163—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • G03G2221/1654—Locks and means for positioning or alignment
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/18—Cartridge systems
    • G03G2221/183—Process cartridge
    • G03G2221/1853—Process cartridge having a submodular arrangement

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【発明の詳細な説明】 本発明は、画像形成装置に係シ、特には現像手段の着脱
時に像担持体を自動的に保護する機能を備えた画像形成
装置に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an image forming apparatus, and more particularly to an image forming apparatus having a function of automatically protecting an image carrier when a developing means is attached or detached.

（１） 電子写真複写装置、或いは簡単な印刷装置等の画像形成
装置では、従来から白黒の色調によるものが主流である
。電子写真複写装置に限るものではないが本格的なカラ
ー画像を可能とする画像形成装置は非常に大形かつ高価
であって、一般ユーザーが簡単に使用できる機会は少な
い。(1) In image forming apparatuses such as electrophotographic copying apparatuses or simple printing apparatuses, black and white color tones have conventionally been mainstream. Although not limited to electrophotographic copying devices, image forming devices capable of producing full-scale color images are very large and expensive, and there are few opportunities for general users to easily use them.

しかるに、近年、軽食、小型に限らず、広く複写機が使
用されるに至シ、完全なカラー画像でなくともせめて単
色でもよいから手軽にカラー画像を得たいという要望が
高まりつつある。However, in recent years, as copying machines have become widely used, not only for light meals and small-sized machines, there is a growing desire to easily obtain color images, even if they are not completely color images, but at least monochromatic ones.

今のところ本格的なカラー電子写真複写装置は本体内に
現像器を複数備えているのでスペースの関係からどうし
ても大形になる。しかし、単色のカラーとなれば現像器
をとシたい色調用の現像器と交換するだけで手軽にカラ
ー複写ができる。At present, full-scale color electrophotographic copying machines are equipped with multiple developing units within the main body, so they are inevitably large due to space constraints. However, if it is a single color, color copying can be easily done by simply replacing the developing device with a developing device for the desired color tone.

しかるに、一般のユーザーが現像器だけを像担持体から
取シ外す場合、像担持体と触れて像担持体面を損傷する
とか、外部の塵埃を付着せしめる等の問題がある。像担
持体に光導電層を（２） 用いた場合、現像器の交換中に外部の光があたり光メモ
リーが生じる問題もある。However, when a general user removes only the developing device from the image carrier, there are problems such as touching the image carrier and damaging the surface of the image carrier, or causing external dust to adhere thereto. When a photoconductive layer (2) is used as an image carrier, there is a problem in that light memory occurs due to external light hitting the developing device during replacement.

本発明の目的は、上記従来技術の欠点を解消する画像形
成装置を提供するものである。An object of the present invention is to provide an image forming apparatus that eliminates the drawbacks of the above-mentioned conventional techniques.

本発明は画像形成装置において、潜像担持体と、との像
担持体に潜像を形成する潜像形成手段と、像担持体に対
向して設けられ、この像担持体から離間可能に支持され
た現像手段と、上記の離間動作により形成される像担持
体と現像手段の間隙に移動可能に支持されるシャッター
と、上記の離間動作に連動してこのシャッターを上記間
隙に移動させる移動手段とを有することを特徴とするも
のである。The present invention provides an image forming apparatus including: a latent image carrier; a latent image forming means for forming a latent image on the image carrier; a shutter movably supported in the gap between the image carrier and the developing means formed by the above-described separating operation, and a moving means for moving the shutter into the gap in conjunction with the above-described separating operation. It is characterized by having the following.

以下、本発明の一実施例を図面により説明する。An embodiment of the present invention will be described below with reference to the drawings.

第１図は本発明を適用した具体例を示す電子写真複写装
置の側断面図である。この複写装置ユは装置のほぼ中央
に、導電性ドラム外周に光導電層を有する感光ドラム２
を備えている。感光ドラム２は時計方向に回転可能に支
持されて（３） いる。感光ドラム２の外周には、回転方向に従って、コ
ロナ放電器６、短焦点光学素子アレイ４、現像器５、転
写コロナ放電器６０．クリーニング器７が配設されてい
る。この装置では、感光ドラム２とコロナ放電器５とク
リーニング器７が筐体８′内に設けられてプロセスキッ
ト８を構成している。筐体８′は、複写装置内のガイド
レールｑ：ｑＷで摺動自在に支承され、必要に応じて装
置外へ取シ出すことができる。１０は往復移動する原稿
台、１１は原稿台照明ランプ、４′は透明部材である。FIG. 1 is a side sectional view of an electrophotographic copying apparatus showing a specific example to which the present invention is applied. This copying device has a photosensitive drum 2, which has a photoconductive layer on the outer periphery of the conductive drum, located approximately in the center of the device.
It is equipped with The photosensitive drum 2 is supported so as to be rotatable in a clockwise direction (3). A corona discharger 6, a short focus optical element array 4, a developer 5, a transfer corona discharger 60, . A cleaning device 7 is provided. In this apparatus, a photosensitive drum 2, a corona discharger 5, and a cleaning device 7 are provided in a housing 8' to constitute a process kit 8. The housing 8' is slidably supported by guide rails q:qW inside the copying apparatus, and can be taken out of the apparatus as required. Reference numeral 10 denotes a document table that moves back and forth, 11 a document table illumination lamp, and 4' a transparent member.

１２は転写材収納カセット、１Ｓは転写材の給送ローラ
、１４はタイミングローラ、１５は転写材を転写コロナ
放電器６と感光ドラム２間へ導くガイド部材、１６は転
写終了後の転写材の移動路、１７は定着ローラ対、１Ｂ
は排出ローラ対、１９はコピーの排紙トレーである。12 is a transfer material storage cassette, 1S is a transfer material feeding roller, 14 is a timing roller, 15 is a guide member that guides the transfer material between the transfer corona discharger 6 and the photosensitive drum 2, and 16 is a guide member for guiding the transfer material between the transfer corona discharger 6 and the photosensitive drum 2; Moving path, 17 is a pair of fixing rollers, 1B
1 is a pair of discharge rollers, and 19 is a paper discharge tray for copying.

プロセスキット８を保護するためにシャッター２０．２
４が設けられている。シャッター２０は感光ドラム２が
転写部において露出している面（４） を保護するためのものでジャム処理時あるいはキット交
換時に、第２図に示すように上部筐体２２と下部筐体２
３に分割すべく本体を回動させる動きに連動して、感光
ドラム２の露出面を保護する方向へ動き外部と遮断する
。Shutter 20.2 to protect process kit 8
4 are provided. The shutter 20 is used to protect the exposed surface (4) of the photosensitive drum 2 in the transfer section, and when clearing a jam or replacing the kit, the shutter 20 protects the upper housing 22 and the lower housing 2 as shown in FIG.
In conjunction with the movement of rotating the main body to divide it into three parts, it moves in a direction to protect the exposed surface of the photosensitive drum 2 and isolate it from the outside.

本発明に係るシャッター２４は現像器５を本体からガイ
ドレールｑ＃、９１１１Ｆに沿って抜き出すときあるい
はキット８を本体から抜き出すときに感光ドラム２の露
出面を保護するように閉じられる。このときの移動機構
を第３図以降に詳述する。第３図（ａ）及び（１））は
現像器５の移動に対するシャッター２４の開閉動作を示
す。The shutter 24 according to the present invention is closed to protect the exposed surface of the photosensitive drum 2 when the developing device 5 is taken out from the main body along the guide rails q# and 9111F or when the kit 8 is taken out from the main body. The moving mechanism at this time will be explained in detail from FIG. 3 onwards. 3(a) and (1)) show the opening/closing operation of the shutter 24 with respect to the movement of the developing device 5. FIG.

第３図（ａ）は複写動作中のシャッター２４と現像器５
の状態である。このときには現像器５は、感光ドラム２
に極めて近接、若しくは接触の状態にある。そのため、
現像器５をプロセスキット８から離脱するためには、両
者を離間させた後完全に離脱させるのが良策である。従
って、現像器５は、その両側面を装置本体に回動可能に
軸２５によシ支持されている。第３図（ｂ）は現（５） 信器５を反時計方向に回動して感光ドラム２がら離間し
た状態である。保護シャッター２４は感光ドラム２と同
軸上にレバー２６．２７　（第４図）によ９回動可能に
支持されている。このとき、シャッター２４は感光ドラ
ム２の露出面を覆うように現像器との離間部に移動する
。FIG. 3(a) shows the shutter 24 and the developing device 5 during copying operation.
It is in a state of At this time, the developing device 5 is connected to the photosensitive drum 2.
in close proximity to or in contact with. Therefore,
In order to remove the developing device 5 from the process kit 8, it is a good idea to separate the two and then completely remove the developing device 5 from the process kit 8. Therefore, the developing unit 5 is rotatably supported by a shaft 25 on both sides of the apparatus main body. FIG. 3(b) shows the current state (5) in which the transmitter 5 is rotated counterclockwise and separated from the photosensitive drum 2. The protective shutter 24 is supported coaxially with the photosensitive drum 2 so as to be rotatable nine times by levers 26, 27 (FIG. 4). At this time, the shutter 24 moves to a part separated from the developing device so as to cover the exposed surface of the photosensitive drum 2.

シャッター２４と現像器５の連動機構を第４図（ａ）及
び（１））に示す。第４図はシャッター２４と現像器５
の関係を複写装置の奥側からみた図で現像器５０回動軸
２５からのびているレバー２８と感光ドラム２の中心か
らシャッター２４を支えているレバー２７がレバー２８
の先端ノビン２８′により図のようにかみあうことにょ
シ両者は連動する。レバー２８は複写装置本体に設けら
れているので第５図のように、現像器５の抜き差しに関
係なく本体側に残る。一方、現像器５を本体に装着する
ときは、現像器５の凸部材２５′がレバー２８の回動軸
２８’部の凹部２８′と係合する。これによシ現信器５
の揺動動作がレバー２８に伝達される。The interlocking mechanism between the shutter 24 and the developing device 5 is shown in FIGS. 4(a) and (1)). Figure 4 shows the shutter 24 and the developing device 5.
This is a diagram showing the relationship between the lever 28 extending from the rotating shaft 25 of the developing unit 50 and the lever 27 supporting the shutter 24 from the center of the photosensitive drum 2.
The two end knobs 28' interlock with each other as shown in the figure. Since the lever 28 is provided on the main body of the copying apparatus, it remains on the main body side regardless of whether the developing device 5 is inserted or removed, as shown in FIG. On the other hand, when the developing device 5 is attached to the main body, the convex member 25' of the developing device 5 engages with the recessed portion 28' of the rotation shaft 28' of the lever 28. This is the current transmitter 5
The swinging motion is transmitted to the lever 28.

（６） 現像器５の回動軸２５は第４図（ａ）及び（ｂ）からも
判るように左側へ偏心しているので現像器は自重により
回動軸２５に対して時計回シ、即ち、感光ドラム２から
離れる方向に動く。現像器５を感光ドラム２に近づける
には、現像器５外の下部に配したカム２９を時計方向へ
回す。第６図において、３０はカム２９を動かすだめの
レバーである。現像器５を感光ドラム２側へ引き寄せ易
くするためコイルバネ３１が設けられている。コイルバ
ネ３１は、装置本体に固定される現像器５の側板５ａの
内側に設けられたダボ５ｂと現像器５の側壁に設けられ
たタボ５Ｃに張設されている。このコイルバネは上述し
た現像器５の重力による回動を阻止しない程度の弾性力
である。(6) As can be seen from FIGS. 4(a) and 4(b), the rotating shaft 25 of the developing device 5 is eccentric to the left, so the developing device rotates clockwise with respect to the rotating shaft 25 due to its own weight. , moves in a direction away from the photosensitive drum 2. In order to bring the developing device 5 closer to the photosensitive drum 2, a cam 29 disposed outside the developing device 5 at the bottom is turned clockwise. In FIG. 6, 30 is a lever for moving the cam 29. A coil spring 31 is provided to easily draw the developing device 5 toward the photosensitive drum 2 side. The coil spring 31 is stretched between a dowel 5b provided inside a side plate 5a of the developing device 5 fixed to the apparatus main body and a dowel 5C provided on the side wall of the developing device 5. This coil spring has an elastic force that does not prevent the above-described rotation of the developing device 5 due to gravity.

以上のような構成であるから、現像器を感光ドラムから
離間したとき、シャッター２４が自重で回動落下して感
光ドラムの露出面を保護し現像器交換時に感光ドラムを
損傷することなく、かつ感光ドラムに外光を与えること
のないため（７） 光メモリーを残すことのなく安定した画像を得ることが
できる。With the above configuration, when the developing device is separated from the photosensitive drum, the shutter 24 rotates and falls under its own weight to protect the exposed surface of the photosensitive drum and prevent damage to the photosensitive drum when replacing the developing device. Since external light is not applied to the photosensitive drum (7) stable images can be obtained without leaving any optical memory.

尚シャッターの開放は手動でもできなく、現像器を交換
した後に感光ドラムに近接するように現像器を回動すれ
ば、その動作に応じて、開放することは勿論である。It should be noted that the shutter cannot be opened manually, but if the developing device is rotated so as to approach the photosensitive drum after replacing the developing device, the shutter can of course be opened in accordance with the operation.

尚、単に感光ドラムの損傷防止には上記シャッターの材
質、形状はなんら限定されない。不透明部材でシャッタ
ーを形成すれば感光ドラムに光メモリーを発生させるの
を防止することができる。Note that the material and shape of the shutter are not limited in any way to simply prevent damage to the photosensitive drum. By forming the shutter with an opaque material, it is possible to prevent optical memory from occurring on the photosensitive drum.

本発明によれば、現像器の着脱時に、像担持体の露出面
を保護することができるので、現像器の交換或いは着脱
に際して感光ドラムの損傷を防止できる。According to the present invention, the exposed surface of the image carrier can be protected when the developing device is attached or detached, so damage to the photosensitive drum can be prevented when the developing device is replaced or attached or detached.

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

第１図は本発明の一実施例を示す電子写真複写装置の側
断面図、第２図は上記装置を分割した状態図、第３図（
−）及び第３図（ｂ）は現像器と保護シャッターの動作
説明図、第４図（ａ）及び第４（８） 図（ｂ）は更に詳細な現像器と保護シャッターの動作説
明図、第５図はレバー２８の拡大斜視図、第６図は現像
器を複写装置本体に装着したときの部分斜視図。 ２・・・感光ドラム（像担持体） ３・・・コロナ放電器（潜像形成手段）４　・・・短焦
点光学素子アレイ（潜像形成手段）５・・・現像器（現
偉手段） １１　　・・・原稿台照明ランプ（潜像形成手段）２４
・・・シャッター ２７　、２８・・・レバー（移動手段）出願人　キャノ
ン株式会社 （９） ６３　ｒＸ２Ｊ（の ｚＯ 第３ワの ４０８− 東京都大田区下丸子３丁目３０番 ２号キャノン株式会社内 ４０９−FIG. 1 is a side sectional view of an electrophotographic copying apparatus showing an embodiment of the present invention, FIG. 2 is a diagram showing the state in which the apparatus is divided, and FIG.
-) and FIG. 3(b) are diagrams explaining the operation of the developing device and the protective shutter, and FIG. 4(a) and FIG. FIG. 5 is an enlarged perspective view of the lever 28, and FIG. 6 is a partial perspective view of the developing device installed in the main body of the copying machine. 2... Photosensitive drum (image carrier) 3... Corona discharger (latent image forming means) 4... Short focus optical element array (latent image forming means) 5... Developing device (developing means) 11... Document table illumination lamp (latent image forming means) 24
...Shutters 27, 28...Lever (movement means) Applicant Canon Co., Ltd. (9) 63 rX2J (zO 3rd Wa-408- 409 Canon Co., Ltd., 3-30-2 Shimomaruko, Ota-ku, Tokyo −

Claims (2)

【特許請求の範囲】[Claims] （１）潜像担持体と、 との像担持体に潜像を形成する潜像形成手段と、像担持
体に対向して設けられ、この像担持体から離間可能に支
持された現像手段と、上記の離間動作により形成される
像担持体と現像手段の間隙に移動可能に支持されるシャ
ッターと、 上記の離間動作に連動してこのシャッターを上記間隙に
移動する移動手段と、 を有することを特徴とする画像形成装置。(1) a latent image bearing member; a latent image forming means for forming a latent image on the image bearing member; and a developing means provided opposite to the image bearing member and supported so as to be separable from the image bearing member; , a shutter movably supported in the gap between the image carrier and the developing means formed by the above separation operation, and a moving means for moving the shutter to the gap in conjunction with the above separation operation. An image forming apparatus characterized by: （２）潜像担持体が光導電層を有することを特徴とする
特許請求の範囲第１項記載の画像形成装置。(2) The image forming apparatus according to claim 1, wherein the latent image carrier has a photoconductive layer.
JP57145801A 1982-08-23 1982-08-23 Process kit and image forming device with process kit Granted JPS5934555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP57145801A JPS5934555A (en) 1982-08-23 1982-08-23 Process kit and image forming device with process kit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP57145801A JPS5934555A (en) 1982-08-23 1982-08-23 Process kit and image forming device with process kit

Publications (2)

Publication Number Publication Date
JPS5934555A true JPS5934555A (en) 1984-02-24
JPH029344B2 JPH029344B2 (en) 1990-03-01

Family

ID=15393462

Family Applications (1)

Application Number Title Priority Date Filing Date
JP57145801A Granted JPS5934555A (en) 1982-08-23 1982-08-23 Process kit and image forming device with process kit

Country Status (1)

Country Link
JP (1) JPS5934555A (en)

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021070A (en) * 1983-07-15 1985-02-02 Fuji Xerox Co Ltd Developing device
JPS60135968A (en) * 1983-12-23 1985-07-19 Sharp Corp Copying machine
JPS61129665A (en) * 1984-11-29 1986-06-17 Canon Inc Developing device
JPS61201274A (en) * 1985-03-04 1986-09-05 Canon Inc Image forming device
JPS62139566A (en) * 1985-12-13 1987-06-23 Alps Electric Co Ltd Image forming device
JPS62193245U (en) * 1986-05-28 1987-12-08
JPS6415242U (en) * 1987-07-17 1989-01-25
EP0872350A3 (en) * 1997-02-19 1999-01-20 Sharp Kabushiki Kaisha Image forming apparatus
US6473155B1 (en) * 1999-10-27 2002-10-29 Samsung Electronics Co., Ltd. Image forming apparatus
EP1457841A3 (en) * 2003-03-14 2004-11-24 Brother Kogyo Kabushiki Kaisha Colour image forming apparatus with removable developing units
JP2005338226A (en) * 2004-05-25 2005-12-08 Kyocera Mita Corp Image forming apparatus
JP2006003690A (en) * 2004-06-18 2006-01-05 Kyocera Mita Corp Image forming apparatus

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6021070A (en) * 1983-07-15 1985-02-02 Fuji Xerox Co Ltd Developing device
JPS60135968A (en) * 1983-12-23 1985-07-19 Sharp Corp Copying machine
JPS61129665A (en) * 1984-11-29 1986-06-17 Canon Inc Developing device
JPS61201274A (en) * 1985-03-04 1986-09-05 Canon Inc Image forming device
JPS62139566A (en) * 1985-12-13 1987-06-23 Alps Electric Co Ltd Image forming device
JPS62193245U (en) * 1986-05-28 1987-12-08
JPS6415242U (en) * 1987-07-17 1989-01-25
EP0872350A3 (en) * 1997-02-19 1999-01-20 Sharp Kabushiki Kaisha Image forming apparatus
US6079816A (en) * 1997-02-19 2000-06-27 Sharp Kabushika Kaisha Electrostatic image forming apparatus having control electrode protection means
US6473155B1 (en) * 1999-10-27 2002-10-29 Samsung Electronics Co., Ltd. Image forming apparatus
EP1457841A3 (en) * 2003-03-14 2004-11-24 Brother Kogyo Kabushiki Kaisha Colour image forming apparatus with removable developing units
US7184688B2 (en) 2003-03-14 2007-02-27 Brother Kogyo Kabushiki Kaisha Image forming apparatus
JP2005338226A (en) * 2004-05-25 2005-12-08 Kyocera Mita Corp Image forming apparatus
JP2006003690A (en) * 2004-06-18 2006-01-05 Kyocera Mita Corp Image forming apparatus

Also Published As

Publication number Publication date
JPH029344B2 (en) 1990-03-01

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