JPH0981014A - Color image forming device - Google Patents
Color image forming deviceInfo
- Publication number
- JPH0981014A JPH0981014A JP7232656A JP23265695A JPH0981014A JP H0981014 A JPH0981014 A JP H0981014A JP 7232656 A JP7232656 A JP 7232656A JP 23265695 A JP23265695 A JP 23265695A JP H0981014 A JPH0981014 A JP H0981014A
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- process cartridge
- developing
- image
- color image
- 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
Links
Landscapes
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
- Color Electrophotography (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、主としてドラム状の像
形成体の周面に複数の像露光手段と現像手段を配置して
像形成体の一回転中にトナー像を重ね合わせて形成する
電子写真方式のカラー画像形成装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention mainly arranges a plurality of image exposing means and developing means on the peripheral surface of a drum-shaped image forming body to form toner images by superposing them during one rotation of the image forming body. The present invention relates to an electrophotographic color image forming apparatus.
【０００２】[0002]
【従来の技術】多色のカラー画像を形成する方法として
は、画像を必要な色と同数の感光体，帯電器，現像器等
を備え、それぞれ感光体に形成した単色のトナー像を中
間転写等に重ね合わせてカラー画像とする装置（Ａ）
や、１つの感光体を複数回転して各色毎の帯電，像露光
並びに現像を繰り返してカラー画像を形成する装置
（Ｂ）或いは同じく１つの感光体の一回転以内に各色毎
の帯電，像露光並びに現像を順次行ってカラー画像を形
成する装置（Ｃ）等が知られている。2. Description of the Related Art As a method of forming a multicolor image, a photoconductor, a charger, a developing device and the like are provided in the same number as required for the image. (A)
A device (B) for forming a color image by repeating charging, image exposure and development for each color by rotating one photosensitive member a plurality of times, or charging and image exposure for each color within one rotation of one photosensitive member. In addition, an apparatus (C) and the like for forming a color image by sequentially performing development are known.
【０００３】しかし前記の装置（Ａ）は複数の感光体や
中間転写体を要するため装置の容積が大型化する欠点が
あり、一方装置（Ｂ）は帯電手段，像露光手段や感光体
が一つだけであるので容積は小型化されるものの形成さ
れる画像のサイズが感光体の表面積以下に限定されると
云う制約がある。However, the device (A) requires a plurality of photoconductors and an intermediate transfer member, and thus has the disadvantage of increasing the volume of the device. On the other hand, the device (B) requires only a charging unit, an image exposure unit and a photoconductor. However, since the volume is reduced, the size of the formed image is limited to the surface area of the photosensitive member or less.
【０００４】また装置（Ｃ）は高速の画像形成を可能と
するものの、感光体の一周内に帯電器，像露光手段と現
像器を複数組配設する必要があること、像露光を行う光
学系が近接する現像器から洩れるトナーに汚れて画質を
損なうおそれがあり、これを避けるため像露光手段と現
像器の間隔を大きくとる必要があることから必然的に感
光体の径が大きくなって装置を大型化すると云う矛盾が
ある。Although the apparatus (C) enables high-speed image formation, it is necessary to dispose a plurality of sets of a charger, an image exposing means and a developing unit in one circumference of a photoreceptor, and an optical system for exposing an image. The image quality may be impaired due to contamination of the toner leaking from the developing unit close to the system, and it is necessary to increase the distance between the image exposing means and the developing unit to avoid this. There is a contradiction of increasing the size of the device.
【０００５】装置（Ｃ）における前述したような障害の
欠点を避ける目的から、像形成体の基体を透明体の素材
によって形成し、その内部に複数の像露光手段を収容し
て、画像を前記の基体を通してその外周に形成した感光
層に露光する形態の装置が提案されている（例えば特開
平５−３０７３０７号公報）。For the purpose of avoiding the drawbacks of the above-mentioned obstacles in the apparatus (C), the base of the image forming body is formed of a transparent material, and a plurality of image exposure means are accommodated in the inside thereof to print the image. An apparatus in which a photosensitive layer formed on the outer periphery of the substrate is exposed through the above substrate has been proposed (for example, JP-A-5-307307).
【０００６】[0006]
【発明が解決しようとする課題】しかしながら前記の提
案による装置は像形成体の内側に像露光手段、外側に帯
電器，現像器を数多く配設するために構造が複雑化し、
現像器や像形成体や像露光手段の着脱操作が煩雑になっ
て取り扱い性が悪くなり、また各機材相互間の位置精度
を保つのも難しいと云う難点を抱えている。However, the apparatus according to the above proposal has a complicated structure because image exposure means is provided inside the image forming body and a number of chargers and developing devices are provided outside the image forming body.
The mounting and dismounting operations of the developing device, the image forming body, and the image exposing means are complicated and the handling is poor, and it is also difficult to maintain the positional accuracy between the respective devices.
【０００７】本発明のこの点を解決して改良した結果、
装置のコンパクト化を実現すると共に機材の着脱の操作
性が良くメンテナンスの容易なカラー画像形成装置の提
供を目的としたものである。As a result of solving and improving this point of the present invention,
An object of the present invention is to provide a color image forming apparatus which realizes compactness of the apparatus and has good operability of attaching and detaching equipment and easy maintenance.
【０００８】[0008]
【課題を解決するための手段】上記目的は、像形成体に
対し帯電，像露光及び現像を繰り返して前記像形成体上
にトナー像を重ね合わせて形成後、転写材に一括転写を
行うカラー画像形成装置において、前記像形成体はドラ
ム状像形成体であって、内包する像露光手段と共にプロ
セスカートリッジに収めて一体化されていて、前記プロ
セスカートリッジは装置本体を転写部において開放し現
像手段を退避した後転写部方向より着脱可能とすること
を特徴とするカラー画像形成装置によって達成される。SUMMARY OF THE INVENTION The above-mentioned object is a color in which a toner image is superposed on the image forming body by repeatedly charging, exposing and developing the image forming body, and then collectively transferring to a transfer material. In the image forming apparatus, the image forming body is a drum-shaped image forming body, and is housed in a process cartridge together with an image exposing means contained therein, and the process cartridge opens the apparatus main body at a transfer portion to develop a developing means. The image forming apparatus according to the present invention is characterized in that after being retracted, it can be attached and detached in the direction of the transfer portion.
【０００９】[0009]
【実施例】本発明の実施例を図１ないし図６によって説
明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS.
【００１０】１０はドラム状の像形成体即ち感光体ドラ
ムであって光学ガラス若しくは透明アクリル樹脂等の透
明部材によって形成される円筒状の基体の外周に透明導
電層、有機感光層（ＯＰＣ）を塗布して形成される。Reference numeral 10 denotes a drum-shaped image forming body, that is, a photosensitive drum, which has a transparent conductive layer and an organic photosensitive layer (OPC) on the outer periphery of a cylindrical substrate formed of a transparent member such as optical glass or transparent acrylic resin. It is formed by coating.
【００１１】前記感光体ドラム１０は図２に示す如く一
方の端部を構成するフランジ部材１０Ａが後述するプロ
セスカートリッジ３０の一方の壁面に対し軸受Ｂ１を介
して軸受され、他方の端部を構成するフランジ部材１０
Ｂがプロセスカートリッジ３０の他方の壁面と後述する
露光光学系１２の支持部材２０とに挟着支持される軸受
Ｂ２によって軸受されていて、装置本体の駆動系より伝
達される歯車Ｇの動力によって時計方向に駆動回転され
るようになっている。As shown in FIG. 2, the photosensitive drum 10 has a flange member 10A, which constitutes one end portion thereof, is supported on one wall surface of a process cartridge 30, which will be described later, through a bearing B1 and constitutes the other end portion thereof. Flange member 10
B is supported by a bearing B2 which is sandwiched and supported by the other wall surface of the process cartridge 30 and a support member 20 of the exposure optical system 12 which will be described later, and is driven by the power of the gear G transmitted from the drive system of the apparatus main body. It is designed to be driven and rotated in the direction.
【００１２】１１はスコロトロン帯電器で感光体ドラム
１０の前述した有機感光体層に対し所定の電位に保持さ
れたグリッドと放電ワイヤによるコロナ放電とによって
帯電作用を行い、感光体ドラム１０に対し一様な電位を
与える。Reference numeral 11 denotes a scorotron charger, which performs a charging operation on the above-described organic photoconductor layer of the photoconductor drum 10 by a grid held at a predetermined potential and corona discharge by a discharge wire, so that the photoconductor drum 10 is charged with a single charge. Such a potential is applied.
【００１３】１２は感光体ドラム１０の軸方向に配列し
たＬＥＤとセルフォックレンズとから構成される露光光
学系で、別体の画像読み取り装置によって読み取られた
各色の画像信号がメモリより順次取り出されて前記の各
露光光学系１２にそれぞれ電気信号として入力される。Reference numeral 12 is an exposure optical system composed of LEDs and SELFOC lenses arranged in the axial direction of the photosensitive drum 10, and image signals of respective colors read by a separate image reading device are sequentially taken out from the memory. And is input as an electric signal to each of the exposure optical systems 12 described above.
【００１４】前記の各露光光学系１２は何れも前述した
円柱状の支持部材２０に取り付けられて前記感光体ドラ
ム１０の基体内部に収容される。Each of the exposure optical systems 12 is attached to the above-mentioned cylindrical support member 20 and is housed inside the base of the photosensitive drum 10.
【００１５】１３Ｙないし１３Ｋはイエロー（Ｙ），マ
ゼンタ（Ｍ），シアン（Ｃ）及びＫ（黒色）の各現像剤
を収容する現像器で、それぞれ感光体ドラム１０の周面
に対し所定の間隙を保って同方向に回転する現像スリー
ブ１３０を備えている。Reference numerals 13Y to 13K denote developing units for accommodating yellow (Y), magenta (M), cyan (C) and K (black) developers, respectively, each having a predetermined gap with respect to the peripheral surface of the photosensitive drum 10. The developing sleeve 130 rotates in the same direction while maintaining the above.
【００１６】前記の各現像器は、前述した帯電器１１に
よる帯電，露光光学系１２による像露光によって形成さ
れる感光体ドラム１０上の静電潜像を現像バイアス電圧
の印加により非接触の状態で反転現像する。Each of the developing devices is in a non-contact state by applying a developing bias voltage to the electrostatic latent image formed on the photosensitive drum 10 formed by the charging by the charging device 11 and the image exposure by the exposure optical system 12 described above. Reverse development with.
【００１７】次に本装置におけるカラー画像形成装置の
プロセスについて説明する。Next, the process of the color image forming apparatus in this apparatus will be described.
【００１８】原稿画像は本装置とは別体の画像読み取り
装置において、撮像素子により読み取られた画像或いは
コンピュータで編集された画像を、Ｙ，Ｍ，Ｃ及びＫの
各色別の画像信号として一旦メモリに記憶し格納され
る。The original image is temporarily stored in an image reading device, which is separate from this apparatus, as an image read by an image pickup device or an image edited by a computer as an image signal for each color of Y, M, C and K. Are stored and stored in.
【００１９】画像記録のスタートにより感光体駆動モー
タの始動により前記の駆動歯車４０Ｇが回動して感光体
ドラム１０を時計方向へと回転し、同時に帯電器１１
（Ｙ）の帯電作用により感光体ドラム１０に電位の付与
が開始される。By the start of the image recording, the drive gear 40G is rotated by the start of the photoconductor drive motor to rotate the photoconductor drum 10 in the clockwise direction, and at the same time, the charger 11 is driven.
The application of the potential to the photosensitive drum 10 is started by the charging action of (Y).
【００２０】感光体ドラム１０は電位を付与されたあ
と、前記の露光光学系１２（Ｙ）において第１の色信号
即ちイエロー（Ｙ）の画像信号に対応する電気信号によ
る露光が開始されドラムの回転走査によってその表面の
感光層に原稿画像のイエロー（Ｙ）の画像に対応する静
電潜像を形成する。After a potential is applied to the photosensitive drum 10, the exposure optical system 12 (Y) starts exposure by an electric signal corresponding to the first color signal, that is, the image signal of yellow (Y), and the exposure of the drum is started. By rotating and scanning, an electrostatic latent image corresponding to the yellow (Y) image of the original image is formed on the photosensitive layer on the surface thereof.
【００２１】前記の潜像は現像器１３（Ｙ）により現像
スリーブ上の現像剤が非接触の状態で反転現像され感光
体ドラム１０の回転に応じイエロー（Ｙ）のトナー像が
形成される。The latent image is reversal-developed by the developing device 13 (Y) with the developer on the developing sleeve in a non-contact state, and a yellow (Y) toner image is formed according to the rotation of the photosensitive drum 10.
【００２２】次いで感光体ドラム１０は前記イエロー
（Ｙ）のトナー像の上に更に帯電器１１（Ｍ）の帯電作
用により電位を付与され、露光光学系１２（Ｍ）の第２
の色信号即ちマゼンタ（Ｍ）の画像信号に対応する電気
信号による露光が行われ、現像器１３（Ｍ）による非接
触の反転現像によって前記のイエロー（Ｙ）のトナー像
の上にマゼンタ（Ｍ）のトナー像が順次重ね合わせて形
成していく。Next, the photoconductor drum 10 is further given a potential on the yellow (Y) toner image by the charging action of the charger 11 (M), and the second image of the exposure optical system 12 (M) is applied.
Exposure is performed using an electrical signal corresponding to the color signal of magenta (M), that is, the image signal of magenta (M), and the magenta (M) ) Are sequentially formed to be superimposed.
【００２３】同様のプロセスにより帯電器１１（Ｃ）、
露光光学系１２（Ｃ）及び現像器１３（Ｃ）によって更
に第３の色信号に対応するシアン（Ｃ）のトナー像が、
また帯電器１１（Ｋ）、露光光学系１２（Ｋ）及び現像
器１３（Ｋ）によって第４の色信号に対応する黒色
（Ｋ）のトナー像が順次重ね合わせて形成され、感光体
ドラム１０の一回転以内にその周面上にカラーのトナー
像が形成される。By the same process, the charger 11 (C),
The exposure optical system 12 (C) and the developing device 13 (C) further form a cyan (C) toner image corresponding to the third color signal.
Further, a black (K) toner image corresponding to the fourth color signal is sequentially superimposed and formed by the charger 11 (K), the exposure optical system 12 (K), and the developing device 13 (K). Within one rotation, a color toner image is formed on the peripheral surface.
【００２４】これ等各露光光学系による感光体ドラム１
０の有機感光層に対する露光はドラムの内部より前述し
た透明の基体を通して行われる。従って第２，第３及び
第４の色信号に対応する画像の露光は何れも先に形成さ
れたトナー像の影響を全く受けることなく行われ、第１
の色信号に対応する画像と同等の静電潜像を形成するこ
とが可能となる。なお各露光光学系１２の発熱による感
光体ドラム１０内の温度の安定化及び温度上昇の防止
は、前記支持部材２０に熱伝導性の良好な材料を用い、
低温の場合はヒータを用い、高温の場合はヒートパイプ
を介して外部に放熱する等の措置を講ずることにより支
障のない程度迄抑制することができる。また各現像器に
よる現像作用に際しては、それぞれ現像スリーブ１３０
に対し直流或いは更に交流を加えた現像バイアスが印加
され、現像器の収容する一成分或いは二成分現像剤によ
るジャンピング現像が行われて、透明電導層を接地する
感光体ドラム１０に対して非接触の反転現像が行われる
ようになっている。Photosensitive drum 1 by each of these exposure optical systems
The exposure of the organic photosensitive layer of No. 0 is performed from the inside of the drum through the above-mentioned transparent substrate. Therefore, the exposure of the images corresponding to the second, third and fourth color signals is performed without any influence from the previously formed toner image, and the first exposure is performed.
It is possible to form an electrostatic latent image equivalent to the image corresponding to the color signal of. In order to stabilize the temperature inside the photoconductor drum 10 and prevent the temperature rise due to the heat generation of each exposure optical system 12, a material having good thermal conductivity is used for the supporting member 20,
When the temperature is low, a heater is used, and when the temperature is high, heat is radiated to the outside through a heat pipe. When the developing operation is performed by each developing device, the developing sleeve 130
A developing bias with a direct current or an alternating current applied thereto is applied, and jumping development is performed by the one-component or two-component developer housed in the developing device, so that the transparent conductive layer is not in contact with the photosensitive drum 10 grounded. Reversal development is performed.
【００２５】かくして感光体ドラム１０の周面上に形成
されたカラーのトナー像は転写器１４Ａにおいて給紙カ
セット１５より搬送されタイミングローラ１６の駆動に
よって同期して給紙される転写紙に転写される。Thus, the color toner image formed on the peripheral surface of the photosensitive drum 10 is transferred to the transfer paper which is conveyed from the paper feed cassette 15 in the transfer device 14A and is fed in synchronization with the driving of the timing roller 16. It
【００２６】トナー像の転写を受けた転写紙は、除電器
１４Ｂにおいては帯電の除去を受けてドラム周面より分
離し、定着装置１７においてトナーを溶着したのち排紙
ローラ１８を介して装置上部のトレイ上に排出される。The transfer paper on which the toner image has been transferred is separated from the peripheral surface of the drum by removing the charge in the static eliminator 14B, and the toner is welded by the fixing device 17, and then the upper part of the device via the paper discharge roller 18. Will be ejected onto the tray.
【００２７】一方、転写紙を分離した感光体ドラム１０
はクリーニング装置１９において残留トナーを除去，清
掃して原稿画像のトナー像の形成を続行するかもしくは
一旦停止して新たな原稿画像のトナー像の形成にかか
る。On the other hand, the photosensitive drum 10 from which the transfer paper is separated
The cleaning device 19 removes and cleans residual toner to continue formation of a toner image of a document image, or temporarily stops to form a toner image of a new document image.
【００２８】前記のプロセスカートリッジ３０は、前述
した感光体ドラム１０と各露光光学系１２を一体とする
支持部材２０と共に更に各帯電器１１とクリーニング装
置１９の双方若しくは少なくとも何れか一方を一体に収
容していて各現像器１３とは別個に装置本体に対し着脱
される。The process cartridge 30 accommodates the above-mentioned support member 20 which integrates the photosensitive drum 10 and each exposure optical system 12, and further integrally stores each charger 11 and / or the cleaning device 19 or at least one of them. In addition, the developing device 13 is attached to and detached from the apparatus main body separately.
【００２９】一方、前記の装置本体はプロセスカートリ
ッジ３０と各現像器１３を収める上部本体Ｉと、転写器
１４Ａ、分離器１４Ｂと給紙カセット１５、定着装置１
７等を収容する下部本体IIとから構成されている。On the other hand, the main body of the apparatus is an upper main body I for accommodating the process cartridge 30 and each developing device 13, a transfer device 14A, a separator 14B, a paper feed cassette 15, and a fixing device 1.
It is composed of a lower body II that accommodates 7 and the like.
【００３０】前記の上部本体Ｉは図３に示すように蝶番
Ｈを介して転写紙の給送側即ち図上で装置本体の右側面
側から開放可能であって、プロセスカートリッジ３０と
各現像器１３はそれぞれ転写部、即ち転写器１５Ａの上
部より上方に移動して開放し、着脱可能の位置に置かれ
る。As shown in FIG. 3, the upper main body I can be opened from the feeding side of the transfer sheet, that is, the right side surface of the main body of the apparatus through a hinge H as shown in FIG. 13 are moved to and released from the transfer unit, that is, the upper part of the transfer device 15A, and are placed in a detachable position.
【００３１】前記のプロセスカートリッジ３０は図４に
示す如く、前後の側面にそれぞれ一対のガイド用突起３
１を備えていて、上部本体Ｉ内の前後の基板に設けたそ
れぞれ一対のガイド溝（図示せず）に係合した位置でロ
ックされ、電源並びに動力伝達系を自動的に接続して所
定の画像形成位置に設定される。As shown in FIG. 4, the process cartridge 30 has a pair of guide projections 3 on the front and rear sides thereof.
1 and is locked at a position engaged with a pair of guide grooves (not shown) provided on the front and rear substrates in the upper main body I, and automatically connects the power source and the power transmission system to a predetermined position. The image forming position is set.
【００３２】一方前記の各現像器１３は２つの現像ユニ
ット３１０と３２０に収めて架台（図示せず）上に載置
されていて、感光体ドラム１０の周面に圧接された状態
でそれぞれ電源並びに動力伝達を自動的に接続して所定
の現像位置に設定される。On the other hand, each of the developing devices 13 is housed in two developing units 310 and 320 and is mounted on a pedestal (not shown). Also, the power transmission is automatically connected to set a predetermined developing position.
【００３３】前記の各現像ユニット３１０及び３２０は
架台上を図４の矢示Ａ方向に平行移動して、プロセスカ
ートリッジ３０より退避されるようになっていて、その
状態でプロセスカートリッジ３０は前記のガイド溝に対
するガイド用突起３１の係合を解除して転写部への方向
即ち矢示Ｂ方向に向け取り外される。The developing units 310 and 320 are arranged so as to move in parallel with each other in the direction of arrow A in FIG. 4 and retracted from the process cartridge 30. The engagement of the guide protrusion 31 with the guide groove is released, and the guide protrusion 31 is removed toward the transfer portion, that is, in the direction of arrow B.
【００３４】一方前記の各現像ユニットはプロセスカー
トリッジ３０と同様、前後の側面にそれぞれ一対のガイ
ド用突起３１１及び３２１を備えていて、前述した架台
に設けたガイド溝（図示せず）に係合した位置でロック
されている。On the other hand, each of the developing units has a pair of guide protrusions 311 and 321 on the front and rear sides thereof, like the process cartridge 30, and engages with the guide groove (not shown) provided on the mount. It is locked in the locked position.
【００３５】各現像ユニットはプロセスカートリッジ３
０の取り外し後、架台とのロックを解除して矢示Ｃ方向
即ちプロセスカートリッジ３０の同方向に取り外され
る。Each developing unit is a process cartridge 3
After removing 0, the lock with the gantry is released, and the cartridge is removed in the direction of arrow C, that is, in the same direction of the process cartridge 30.
【００３６】また取り付けに際しては先ず各現像ユニッ
トが架台上に載置され、次いでプロセスカートリッジ３
０が画像形成位置にセットされたあと、更に各現像ユニ
ットが感光体ドラム１０側に即ち矢示Ａ方向と反対方向
に圧接されて、感光体ドラム１０に対向した現像位置に
再び設定される。When mounting, each developing unit is first placed on a pedestal, and then the process cartridge 3
After 0 is set at the image forming position, each developing unit is further pressed against the photoconductor drum 10 side, that is, in the direction opposite to the arrow A direction, and is set again at the developing position facing the photoconductor drum 10.
【００３７】また各現像器１３は図５に示す如く、プロ
セスカートリッジ３０に関係なく単独にて着脱すること
も可能である。即ち、各現像器１３は２つの現像ユニッ
ト３１０Ａと３２０Ａに収めてそれぞれ一対のガイドレ
ール３１１Ａ及び３２１Ａを介して紙面の垂直方向より
架台（図示せず）に挿入され感光体ドラム１０に圧接し
て現像位置に設定されている。As shown in FIG. 5, each developing device 13 can be independently attached or detached regardless of the process cartridge 30. That is, each developing unit 13 is housed in two developing units 310A and 320A, inserted into a pedestal (not shown) from a direction perpendicular to the paper surface through a pair of guide rails 311A and 321A, and brought into pressure contact with the photosensitive drum 10. It is set to the development position.
【００３８】上部本体Ｉは前面に開放可能の扉３１２と
３２２（それぞれ一点鎖線をもって示す）を備えていて
前記の各扉を開放した状態で感光体ドラム１０に対する
圧接を解除すると現像ユニット３１２と３２２はプロセ
スカートリッジ３０を取り外す必要なく紙面の手前方向
へとガイドレール３１１Ａ，３２１Ａをスライドして取
り出すことができる。従って各現像器はプロセスカート
リッジ３０とは別個にメンテナンスが可能となり、また
プロセスカートリッジ３０も現像ユニットの取り外し後
先に説明した図４に示した実施例同様、転写部方向に取
り外すことができる。The upper main body I is provided with openable doors 312 and 322 (shown by alternate long and short dash lines) on the front surface. When the pressure contact with the photosensitive drum 10 is released with the doors open, the developing units 312 and 322 are opened. Can be taken out by sliding the guide rails 311A and 321A toward the front side of the drawing without removing the process cartridge 30. Therefore, each developing device can be maintained separately from the process cartridge 30, and the process cartridge 30 can be removed in the transfer portion direction after removing the developing unit, as in the embodiment shown in FIG.
【００３９】なおプロセスカートリッジ３０は上部本体
Ｉよりの取り外し後、露出した感光体ドラム１０の転写
領域に該当する感光体表面を保護するべく、好ましくは
着脱に応じて自動的開放に開閉される例えば引き戸形式
の遮蔽装置を備えることが望ましくある。After removing the process cartridge 30 from the upper main body I, the process cartridge 30 is preferably opened and closed automatically in response to attachment / detachment in order to protect the exposed photoreceptor surface corresponding to the exposed transfer area of the photoreceptor drum 10. It is desirable to have a sliding door type shielding device.
【００４０】また上部本体Ｉは転写紙の給送側の反対
側、即ち装置本体の左側面側から開放する構造としても
同様の構成と操作の手順によってプロセスカートリッジ
３０並びに各現像器１３の着脱を行うこともできる。Even if the upper main body I has a structure in which it is opened from the side opposite to the transfer paper feeding side, that is, from the left side surface of the apparatus main body, the process cartridge 30 and each developing device 13 can be attached and detached by the same configuration and operation procedure. You can also do it.
【００４１】以上本実施例においてはプロセスカートリ
ッジ３０並びに現像器１３を上部本体Ｉ側に収容するカ
ラー画像形成装置について説明したが、本発明は図６に
示すようにプロセスカートリッジ３０と現像器１３を下
部本体II側に収容して上部本体Ｉの開放により転写部た
る例えば転写ベルト装置１４０を上方に移動する形式の
装置においても、プロセスカートリッジ３０並びに現像
器１３を同様の構成と操作の手順により転写ベルト装置
１４０を退避させた後、プロセスカートリッジ３０を転
写部方向に当たる上方へと下部本体IIに対し着脱するこ
とを可能としている。Although the color image forming apparatus in which the process cartridge 30 and the developing device 13 are housed in the upper main body I side has been described in this embodiment, the present invention includes the process cartridge 30 and the developing device 13 as shown in FIG. Even in an apparatus of a type in which the transfer belt device 140, which is a transfer portion when the upper main body I is accommodated in the lower main body II side, is moved upward, the process cartridge 30 and the developing device 13 are transferred by the same configuration and operation procedure. After retracting the belt device 140, the process cartridge 30 can be attached to and detached from the lower main body II in an upward direction, which is in contact with the transfer portion.
【００４２】[0042]
【発明の効果】本発明により、像形成体、現像装置等の
画像形成部を構成する主要機材の変換、メンテナンスの
作業が容易かつ迅速に実施出来ることとなり、その結果
機能、性能が常に最良の状態に保たれて長期にわたり高
品質の画像を記録することの出来るカラー画像形成装置
が提供されることとなった。As described above, according to the present invention, it is possible to easily and quickly carry out the conversion and maintenance work of the main components constituting the image forming section such as the image forming body and the developing device, and as a result, the functions and performances are always the best. Therefore, a color image forming apparatus capable of keeping high quality and recording high quality images for a long time is provided.
【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】プロセスカートリッジの断面構成図。FIG. 2 is a cross-sectional configuration diagram of a process cartridge.
【図３】装置の開放形式（その一）を示す断面構成図。FIG. 3 is a cross-sectional configuration diagram showing an open type (first) of the device.
【図４】プロセスカートリッジと現像器の着脱形式を示
す説明図。FIG. 4 is an explanatory diagram showing a detachable type of a process cartridge and a developing device.
【図５】現像器の着脱形式を示す説明図。FIG. 5 is an explanatory diagram showing a detachable type of a developing device.
【図６】装置の開放形式（その二）を示す断面構成図。FIG. 6 is a cross-sectional configuration diagram showing an open type (No. 2) of the device.
１０ 感光体ドラム １１ 帯電器 １２ 露光光学系 １３ 現像器 １４Ａ 転写器 １４Ｂ 除電器 １５ 給紙カセット １６ タイミングローラ １７ 定着装置 １９ クリーニング装置 ２０ 支持部材 ３０ プロセスカートリッジ ３１０，３１０Ａ，３２０，３２０Ａ 現像ユニット Ｉ 上部本体 II 下部本体 10 Photoconductor Drum 11 Charging Device 12 Exposure Optical System 13 Developing Device 14A Transfer Device 14B Electrifying Device 15 Paper Feed Cassette 16 Timing Roller 17 Fixing Device 19 Cleaning Device 20 Supporting Member 30 Process Cartridge 310, 310A, 320, 320A Developing Unit I Top Body II Lower body
フロントページの続き (72)発明者 ▲浜▼田 州太 東京都八王子市石川町2970番地コニカ株式 会社内Front Page Continuation (72) Inventor ▲ Hama ▼ Ta Tauta 2970 Ishikawacho, Hachioji City, Tokyo Konica Stock Company
Claims (7)
繰り返して前記像形成体上にトナー像を重ね合わせて形
成後、転写材に一括転写を行うカラー画像形成装置にお
いて、前記像形成体はドラム状像形成体であって、内包
する像露光手段と共にプロセスカートリッジに収めて一
体化されていて、前記プロセスカートリッジは装置本体
を転写部において開放し現像手段を退避した後転写部方
向より着脱可能とすることを特徴とするカラー画像形成
装置。1. A color image forming apparatus, wherein a toner image is superposedly formed on the image forming body by repeating charging, image exposure and development on the image forming body, and then a batch transfer is performed on a transfer material. The body is a drum-shaped image forming body and is integrated in a process cartridge together with an image exposing means included therein, and the process cartridge is opened from the main body of the apparatus at the transfer portion and retracts the developing means, and then from the transfer portion direction. A color image forming apparatus, which is removable.
セスカートリッジを移動することによって行われること
を特徴とする請求項１記載のカラー画像形成装置。2. The color image forming apparatus according to claim 1, wherein the main body of the apparatus is opened by moving the process cartridge with respect to the transfer section.
ッジに対し転写部を移動することによって行われること
を特徴とする請求項１記載のカラー画像形成装置。3. The color image forming apparatus according to claim 1, wherein the main body of the apparatus is opened by moving a transfer section with respect to the process cartridge.
いはクリーニング手段を収めて一体化していることを特
徴とする請求項１記載のカラー画像形成装置。4. The color image forming apparatus according to claim 1, wherein the process cartridge contains a charging unit or a cleaning unit and is integrated therewith.
われることを特徴とする請求項１記載のカラー画像形成
装置。5. The color image forming apparatus according to claim 1, wherein the main body of the apparatus is opened from the feeding side of the transfer material.
着脱方向と同一の方向より着脱されることを特徴とする
請求項１記載のカラー画像形成装置。6. The color image forming apparatus according to claim 1, wherein the developing unit is attached and detached in the same direction as the attaching and detaching direction of the process cartridge.
ことを特徴とする請求項１記載のカラー画像形成装置。7. The color image forming apparatus according to claim 1, wherein the developing means is attached and detached from the retracted position.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7232656A JPH0981014A (en) | 1995-09-11 | 1995-09-11 | Color image forming device |
| US08/695,299 US5752133A (en) | 1994-06-24 | 1996-08-09 | Electrophotographic color image forming apparatus with image exposure means inside of photoreceptor drum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7232656A JPH0981014A (en) | 1995-09-11 | 1995-09-11 | Color image forming device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0981014A true JPH0981014A (en) | 1997-03-28 |
Family
ID=16942730
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7232656A Pending JPH0981014A (en) | 1994-06-24 | 1995-09-11 | Color image forming device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0981014A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004252254A (en) * | 2003-02-21 | 2004-09-09 | Kyocera Mita Corp | Image forming apparatus |
| US7565093B2 (en) | 2004-10-19 | 2009-07-21 | Brother Kogyo Kabushiki Kaisha | Image-forming device having cartridge-accommodating section |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62115469A (en) * | 1985-11-15 | 1987-05-27 | Canon Inc | Image forming device |
| JPS62278580A (en) * | 1986-05-26 | 1987-12-03 | Konica Corp | Color image forming device enabling developing device to be mounted and demounted |
| JPH01213673A (en) * | 1988-02-23 | 1989-08-28 | Toyo Seikan Kaisha Ltd | Multicolor printing method |
| JPH02302763A (en) * | 1989-05-17 | 1990-12-14 | Konica Corp | Color image forming device |
| JPH02311854A (en) * | 1989-05-26 | 1990-12-27 | Konica Corp | Color image forming device |
| JPH0367272A (en) * | 1989-05-15 | 1991-03-22 | Konica Corp | Color image forming device |
| JPH05289428A (en) * | 1992-04-09 | 1993-11-05 | Ricoh Co Ltd | Image forming device |
| JPH05307307A (en) * | 1992-04-28 | 1993-11-19 | Ricoh Co Ltd | Color image forming device |
| JPH0683144A (en) * | 1992-09-03 | 1994-03-25 | Konica Corp | Image forming device |
| JPH06110287A (en) * | 1992-09-28 | 1994-04-22 | Konica Corp | Image forming device |
| JPH07140876A (en) * | 1993-11-18 | 1995-06-02 | Konica Corp | Color image forming device |
| JPH08106244A (en) * | 1994-10-05 | 1996-04-23 | Konica Corp | Image forming device |
| JPH0980854A (en) * | 1995-09-08 | 1997-03-28 | Konica Corp | Image forming device |
-
1995
- 1995-09-11 JP JP7232656A patent/JPH0981014A/en active Pending
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62115469A (en) * | 1985-11-15 | 1987-05-27 | Canon Inc | Image forming device |
| JPS62278580A (en) * | 1986-05-26 | 1987-12-03 | Konica Corp | Color image forming device enabling developing device to be mounted and demounted |
| JPH01213673A (en) * | 1988-02-23 | 1989-08-28 | Toyo Seikan Kaisha Ltd | Multicolor printing method |
| JPH0367272A (en) * | 1989-05-15 | 1991-03-22 | Konica Corp | Color image forming device |
| JPH02302763A (en) * | 1989-05-17 | 1990-12-14 | Konica Corp | Color image forming device |
| JPH02311854A (en) * | 1989-05-26 | 1990-12-27 | Konica Corp | Color image forming device |
| JPH05289428A (en) * | 1992-04-09 | 1993-11-05 | Ricoh Co Ltd | Image forming device |
| JPH05307307A (en) * | 1992-04-28 | 1993-11-19 | Ricoh Co Ltd | Color image forming device |
| JPH0683144A (en) * | 1992-09-03 | 1994-03-25 | Konica Corp | Image forming device |
| JPH06110287A (en) * | 1992-09-28 | 1994-04-22 | Konica Corp | Image forming device |
| JPH07140876A (en) * | 1993-11-18 | 1995-06-02 | Konica Corp | Color image forming device |
| JPH08106244A (en) * | 1994-10-05 | 1996-04-23 | Konica Corp | Image forming device |
| JPH0980854A (en) * | 1995-09-08 | 1997-03-28 | Konica Corp | Image forming device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004252254A (en) * | 2003-02-21 | 2004-09-09 | Kyocera Mita Corp | Image forming apparatus |
| JP4516720B2 (en) * | 2003-02-21 | 2010-08-04 | 京セラミタ株式会社 | Image forming apparatus |
| US7565093B2 (en) | 2004-10-19 | 2009-07-21 | Brother Kogyo Kabushiki Kaisha | Image-forming device having cartridge-accommodating section |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPH10186775A (en) | Color image forming device | |
| JPH0981014A (en) | Color image forming device | |
| JPH08211715A (en) | Color image forming device | |
| JPH10161421A (en) | Color image forming device | |
| JPH10171327A (en) | Color image forming device | |
| JP3427282B2 (en) | Image forming device | |
| JPH1020609A (en) | Color image forming device | |
| JP3353187B2 (en) | Color image forming equipment | |
| JPH08254872A (en) | Color image forming device | |
| JP3321687B2 (en) | Color image forming equipment | |
| JPH11143166A (en) | Color image forming device | |
| JPH09146335A (en) | Color image forming device | |
| JP3298040B2 (en) | Color image forming equipment | |
| JPH1063158A (en) | Image forming device | |
| JP3103555B1 (en) | Individual unit | |
| JP3103552B1 (en) | Individual unit | |
| JPH0968855A (en) | Color image forming device | |
| JPH08254878A (en) | Color image forming device | |
| JPH08110671A (en) | Color image forming device | |
| JPH10207321A (en) | Color image forming device | |
| JPH0876545A (en) | Color image forming device | |
| JPH07325450A (en) | Color image forming device | |
| JPH086344A (en) | Color image forming device | |
| JPH08171251A (en) | Color image forming device | |
| JPH09311602A (en) | Screen image forming device |