JPH0429166A - Plural color image forming device - Google Patents

Plural color image forming device

Info

Publication number
JPH0429166A
JPH0429166A JP2134357A JP13435790A JPH0429166A JP H0429166 A JPH0429166 A JP H0429166A JP 2134357 A JP2134357 A JP 2134357A JP 13435790 A JP13435790 A JP 13435790A JP H0429166 A JPH0429166 A JP H0429166A
Authority
JP
Japan
Prior art keywords
color
image forming
developing device
developing
toner
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
JP2134357A
Other languages
Japanese (ja)
Inventor
Shigeru Oki
繁 大木
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.)
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 JP2134357A priority Critical patent/JPH0429166A/en
Publication of JPH0429166A publication Critical patent/JPH0429166A/en
Pending legal-status Critical Current

Links

Landscapes

  • Dry Development In Electrophotography (AREA)
  • Color Electrophotography (AREA)

Abstract

PURPOSE:To simplify the service maintenance of the replenishing of toner by uniting plural color developing units of a developing device and a movement supporting body integrally and attaching/detaching to/from this image forming device main body in a batch. CONSTITUTION:In a rotary developing device 60, a rotary body 62 and four color developing units 64 are united integrally and the rotary body 62 and four color developing units 64 can be integrally attached/detached to/from the image forming device main body 50. In the rotary body 62, a rotary shaft 68 passing trough the center of the rotary body 62 is rotatively attached inside the device main body 50 by a bearing provided on both side pates of the image forming device main body 50, and the rotary body 62 integrated to the developing units 64 can be attached/detached together with the shaft 68. Therefore, when the toner in plural color developing units 64 of the developing device 60 runs out one after another, plural color developing units 64 are removed from the image forming device main body 50 together with the rotary body 62, and replacing to the rotary body 62 having new developing units 64 can be carried out. Thus, the service maintenance of the replenishing of the toner is simplified.

Description

【発明の詳細な説明】 の1 本発明は、カラーレーザプリンタやカラー電子写真複写
機等の複数色画像形成装置に関し、特に複数色画像を現
像するのに使用する現像装置の現像器にトナーがなくな
ったときに容易に現像器を交換することを可能とした複
数色画像形成装置に関する。
DETAILED DESCRIPTION OF THE INVENTION 1. The present invention relates to a multi-color image forming apparatus such as a color laser printer or a color electrophotographic copying machine, and in particular, the present invention relates to a multi-color image forming apparatus such as a color laser printer or a color electrophotographic copying machine. The present invention relates to a multi-color image forming apparatus that allows a developer to be easily replaced when it runs out.

【東立且I カラーレーザプリンタやカラー電子写真複写機等のカラ
ー画像形成装置においては、1つの感光体ドラムと1つ
の転写ドラムとを組合せて、感光体ドラム上に各色のト
ナー像を形成する度に、転写ドラム上に巻き付けた転写
紙上に各色のトナー像を転写する多重転写方式により、
転写紙上に複数色のトナー像を重ね合わせて転写して、
カラー画像を形成するカラー画像形成方法が多用されて
いる。
[Toritsu Katsu I In color image forming devices such as color laser printers and color electrophotographic copying machines, one photoreceptor drum and one transfer drum are combined to form toner images of each color on the photoreceptor drum. By using a multiple transfer method, each color toner image is transferred onto transfer paper wrapped around a transfer drum at the same time.
By overlapping and transferring multiple color toner images onto transfer paper,
Color image forming methods for forming color images are frequently used.

このような多重転写方式を用いたカラー画像形成方法で
は、感光体ドラム上に順次形成された各色の潜像を順々
に現像して各色のトナー像が次々に形成されるが、この
ような現像を行なう現像装置には、従来、(1)感光体
ドラムの周囲に沿って各色の現像器を固定設置する固定
式現像装置と、(2)感光体ドラムに対し各色の現像器
を回転移動または水平移動させる移動式現像装置とがあ
る。
In a color image forming method using such a multiple transfer method, toner images of each color are formed one after another by developing latent images of each color sequentially formed on a photoreceptor drum one after another. Conventionally, developing devices that perform development include (1) a fixed type developing device in which developing devices for each color are fixedly installed along the circumference of a photoreceptor drum, and (2) a developing device for each color being rotatably moved relative to the photoreceptor drum. Alternatively, there is a mobile developing device that moves horizontally.

最近では、現像器を共通化でき、画像形成装置全体を小
型化、コストダウン化することが可能な(2)の移動式
現像装置が主流となりつつある。
Recently, the mobile developing device (2), which can share a developing device and reduce the size and cost of the entire image forming apparatus, has become mainstream.

このような移動式現像装置としては、例えば特開昭47
−131号に開示されるように、感光体ドラムに隣接し
て移動支持体として回転体を設けて、回転体上に複数の
現像器を配設した回転現像装置が知られている。
As such a mobile developing device, for example, Japanese Patent Application Laid-Open No. 47
2. Description of the Related Art As disclosed in Japanese Patent No. 131-131, a rotary developing device is known in which a rotating body is provided as a movable support adjacent to a photosensitive drum, and a plurality of developing units are arranged on the rotating body.

回転現像装置を設置した従来の画像形成装置を第3図に
示す。
FIG. 3 shows a conventional image forming apparatus equipped with a rotary developing device.

第3図に示すように、画像形成装置は、装置本体50内
の略中央部に感光体ドラム1を備え、感光体ドラム1の
周囲に、1次帯電器2、転写装置5、クリーニング装置
6、回転現像装置40がそれぞれ配置され、装置本体5
0内上方部には光学系10が配置される。
As shown in FIG. 3, the image forming apparatus includes a photoreceptor drum 1 approximately in the center of an apparatus main body 50, and surrounding the photoreceptor drum 1 are a primary charger 2, a transfer device 5, and a cleaning device 6. , a rotary developing device 40 are arranged, and the device main body 5
An optical system 10 is arranged in the upper part of the interior.

本画像形成装置では、光学系10により露光走査された
原稿21の反射光像を色分解して、−広帯電器2で一次
帯電された感光体ドラム1上に露光部3で露光し、これ
により形成された潜像を現像装置40で現像して感光体
ドラム1上にトナー像を形成し、そのトナー像を給紙装
置から給紙された転写紙P上に転写紙装置5により転写
し、クリーニング装置6により感光体ドラム1上の残留
トナーを除去し、このような一連の操作を色分解された
色毎に複数色分繰り返して転写材P上に複数色のトナー
像を得、その後転写紙P上のトナー像を定着装置20に
より定着して、かくして転写紙P上に複数色のトナー像
を重ね合わせてなる複数色画像が得られる。
In this image forming apparatus, a reflected light image of a document 21 exposed and scanned by an optical system 10 is color-separated, and is exposed in an exposure section 3 onto a photosensitive drum 1 which has been primarily charged with a wide charger 2. The latent image formed is developed by the developing device 40 to form a toner image on the photosensitive drum 1, and the toner image is transferred by the transfer paper device 5 onto the transfer paper P fed from the paper feeding device. , the residual toner on the photoreceptor drum 1 is removed by the cleaning device 6, and this series of operations is repeated for multiple colors for each separated color to obtain multiple color toner images on the transfer material P, and then The toner image on the transfer paper P is fixed by the fixing device 20, and thus a multicolor image formed by superimposing the toner images of a plurality of colors on the transfer paper P is obtained.

上記回転現像装置40は、感光体ドラム1に近接して配
置した回転体42を有する。この回転体42上には4色
の現像器44、即ちイエロー色用現像器44Y、マゼン
タ色用現像器44M、シアン色用現像器44Cおよびブ
ラック色用現像器44Bを着脱自在に具備する。4色の
現像器44を備えた回転体42は、回転することにより
選択された色の現像器44を感光体ドラム1に対面させ
る。現像器44の現像スリーブは、感光ドラムlと対向
したときのみ現像モータにより回転し、これにより感光
体ドラムl上の潜像の現像が行なわれる。
The rotary developing device 40 has a rotating body 42 disposed close to the photoreceptor drum 1 . On this rotating body 42, four color developing devices 44, namely, a yellow color developing device 44Y, a magenta color developing device 44M, a cyan color developing device 44C, and a black color developing device 44B are detachably provided. The rotating body 42 equipped with the developing devices 44 of four colors causes the developing device 44 of the selected color to face the photosensitive drum 1 by rotating. The developing sleeve of the developing device 44 is rotated by the developing motor only when facing the photosensitive drum l, thereby developing the latent image on the photosensitive drum l.

通常、現像剤としては、トナーとキャリアとを混合して
なる2成分現像剤を用いるより、トナーのみからなる1
成分現像剤を用いた方が、現像剤へのトナー補給装置や
トナー濃度制御装置が不要で、現像コストの面から有利
であるので、1成分現像剤が用いられることが多い。
Usually, as a developer, rather than using a two-component developer consisting of a mixture of toner and carrier, a single-component developer consisting only of toner is used.
Since using a component developer eliminates the need for a toner replenishing device for the developer and a toner concentration control device and is advantageous in terms of development cost, a single component developer is often used.

が  しよ と る しかしながら、1成分現像剤を用いた現像装置では、現
像器内のトナーがなくなると、トナーを補充するか又は
新しい現像器と交換する必要がある。
However, in a developing device using a one-component developer, when the toner in the developing device runs out, it is necessary to replenish the toner or replace the developing device with a new one.

従って、カラー複写機等の複数色画像形成装置に設置さ
れるような複数色の現像器44を有する現像装置40で
は、現像器44内のトナーが次々になくなるような場合
に、現像器44へのトナの補充または現像器44の交換
のために、画像形成装置本体5oからの現像器44の出
し入れ等の作業を次々に複数回繰り返すことになり、か
なり手間のかかる作業となっていた。
Therefore, in a developing device 40 having a plurality of color developing devices 44 installed in a multi-color image forming apparatus such as a color copying machine, when the toner in the developing device 44 runs out one after another, the toner is transferred to the developing device 44. In order to replenish toner or replace the developing device 44, operations such as loading and unloading the developing device 44 from the main body 5o of the image forming apparatus must be repeated several times one after another, resulting in a considerably time-consuming task.

従って本発明の目的は、現像装置の複数色の現像器内の
トナーが次々になくなるような場合に、現像器内へのト
ナーの補充または現像器の交換を次々に行なう手間を生
じることなく容易に対処して、複数色画像を現像して画
像形成することができるようにした複数色画像形成装置
を提供することである。
Therefore, an object of the present invention is to facilitate replenishment of toner into the developing devices or replacing the developing devices one after another when the toner in the developing devices of a plurality of colors of a developing device runs out one after another. An object of the present invention is to provide a multi-color image forming apparatus capable of developing and forming multi-color images.

を   るための 上記目的は本発明に係る複数色画像形成装置にて達成さ
れる。要約すれば本発明は、像担持体上に複数色画像の
各色の画像の潜像が形成される度に、現像装置の複数色
の現像器を設けた移動支持体により、前記潜像に対応し
た色の現像器が前記潜像の箇所に位置するように前記複
数色の現像器を移動して、前記潜像を現像することを前
記各色の画像に対応した潜像の全てについて行ない、複
数色画像を得る複数色画像形成装置において、前記現像
装置が設けられた画像形成装置本体に対し、前記現像装
置の前記複数色の現像器を移動支持体とを一体に着脱可
能としたことを特徴とする複数色画像形成装置である。
The above-mentioned object is achieved by a multi-color image forming apparatus according to the present invention. In summary, in the present invention, each time a latent image of each color of a multi-color image is formed on an image carrier, a moving support member provided with a plurality of color developing units of a developing device is used to respond to the latent image. moving the developing devices of the plurality of colors so that the developing devices of the respective colors are positioned at the locations of the latent images, and developing the latent images for all of the latent images corresponding to the images of the respective colors; A multi-color image forming apparatus for obtaining a color image, characterized in that the multi-color developing devices of the developing device and a movable support can be integrally attached to and removed from the main body of the image forming device in which the developing device is provided. This is a multi-color image forming apparatus.

K血虜 以下、本発明の実施例について詳述する。K-blood prisoner Examples of the present invention will be described in detail below.

第1図は、本発明の複数色画像形成装置の一実施例を示
す概略断面図である。本実施例の複数色画像形成装置は
、フルカラー電子写真複写機を示す。
FIG. 1 is a schematic cross-sectional view showing an embodiment of a multi-color image forming apparatus of the present invention. The multi-color image forming apparatus of this embodiment is a full-color electrophotographic copying machine.

本画像形成装置は、その装置本体50内の略中央部に、
電子写真用感光体を表面に設けた感光体ドラム1を有し
、感光体ドラム1は反時計方向の矢印X方向に回転され
る。この感光体ドラム1の周囲には、その真上に1次帯
電器2、真下に転写装置5、右側にクリーニング装置6
、左側に回転現像装置60がそれぞれ配置される。また
画像形成装置本体50の上方部には光学系10が配置さ
れ、光学系10はプラテン7上の原稿21の画像を、−
広帯電器2と現像装置2との間に位置した露光部3で感
光体ドラム1上に露光するように構成されている。
The present image forming apparatus has a
It has a photoreceptor drum 1 having an electrophotographic photoreceptor provided on its surface, and the photoreceptor drum 1 is rotated in the counterclockwise direction of arrow X. Around this photosensitive drum 1, there is a primary charger 2 directly above it, a transfer device 5 directly below it, and a cleaning device 6 on the right side.
, a rotary developing device 60 is arranged on the left side. Further, an optical system 10 is arranged above the image forming apparatus main body 50, and the optical system 10 converts the image of the document 21 on the platen 7 into -
The exposure section 3 located between the wide charger 2 and the developing device 2 is configured to expose the photoreceptor drum 1 to light.

光学系10は任意のものを利用し得るが、本実施例では
光学系10は、プラテン7と平行に移動する第1走査ミ
ラー11、第1走査ミラー11に対し半分の速度で同方
向に移動する第2および第3走査ミラー12.13、結
像レンズ14および第4固定ミラー15から構成され、
周知のスリット露光式の光学系となっている。原稿照明
光源16は、第1走査ミラー11と共に運動するように
構成され、色分解フィルタ17は第4固定ミラー15と
露光部3との間に配置される。
Although any optical system 10 can be used, in this embodiment, the optical system 10 includes a first scanning mirror 11 that moves parallel to the platen 7, and a first scanning mirror 11 that moves in the same direction at half the speed of the first scanning mirror 11. It is composed of second and third scanning mirrors 12 and 13, an imaging lens 14 and a fourth fixed mirror 15,
It is a well-known slit exposure type optical system. The document illumination light source 16 is configured to move together with the first scanning mirror 11 , and the color separation filter 17 is arranged between the fourth fixed mirror 15 and the exposure section 3 .

光学系10によれば、第1、第2および第3走査ミラー
11.12.13によって露光走査された原稿21の反
射光像が、レンズ14を通過後第4固定ミラー15を経
て色分解フィルタ17により色分解され、露光部3で感
光体ドラムl上に結像して、感光体ドラム1上に各色の
潜像が形成される。
According to the optical system 10, the reflected light image of the original 21 that has been exposed and scanned by the first, second, and third scanning mirrors 11, 12, and 13 passes through the lens 14, and then passes through the fourth fixed mirror 15 to the color separation filter. 17, and images are formed on the photoreceptor drum 1 by the exposure section 3, thereby forming latent images of each color on the photoreceptor drum 1.

画像形成装置本体50の右側部には、定着装置20およ
び給紙装置30が配置され、また転写ドラム5と定着装
置20および給紙装置30との間には、それぞれ転写紙
搬送系25および35が配設される。
A fixing device 20 and a paper feeding device 30 are arranged on the right side of the image forming apparatus main body 50, and transfer paper conveying systems 25 and 35 are arranged between the transfer drum 5 and the fixing device 20 and the paper feeding device 30, respectively. will be placed.

現像装置60は、移動支持体としての回転体62に4色
の現像器64、即ちイエロー用現像器64Y、マゼンタ
用現像器64M、シアン用現像器64Cおよびブラック
用現像器64Bを備えており、感光体ドラム1上に色分
解された各色の潜像が形成される度に、回転体62が回
転することにより、その潜像の箇所に対応する色の現像
器64を移動して、潜像を現像、可視化することを繰り
返す。
The developing device 60 includes a rotating body 62 serving as a moving support and four color developing devices 64, that is, a yellow developing device 64Y, a magenta developing device 64M, a cyan developing device 64C, and a black developing device 64B. Each time a color-separated latent image of each color is formed on the photoreceptor drum 1, the rotating body 62 rotates to move the developing device 64 of the color corresponding to the latent image, thereby forming the latent image. Repeat the process of developing and visualizing.

転写装置5は、典型的には周囲に転写材の転写紙Pを把
持するグリッパ5aを有する転写ドラム5bを備えてな
る。転写装置5は、給紙装置30の転写紙カセット31
又は32から転写紙搬送系を経て給紙された転写紙Pの
先端をグリッパ5aで把持し、感光体ドラムl上の各色
のトナー像を転写するべく回転、移送させる。転写ドラ
ム5aの転写域の内部には、転写帯電器5Cが配置され
る。
The transfer device 5 typically includes a transfer drum 5b having a gripper 5a around the periphery for gripping a transfer paper P as a transfer material. The transfer device 5 includes a transfer paper cassette 31 of a paper feed device 30.
Alternatively, the leading edge of the transfer paper P fed from 32 through the transfer paper conveyance system is gripped by the gripper 5a, and rotated and transported to transfer the toner images of each color on the photosensitive drum l. A transfer charger 5C is arranged inside the transfer area of the transfer drum 5a.

上記構成にて、感光体ドラム1に対し、色分解フィルタ
17によって色分解された色毎に、1次帯電器2、光学
系10、現像装置60、転写装置5およびクリーニング
装置6により、帯電、露光、現像、転写およびクリーニ
ングの各工程が施される。
In the above configuration, the photosensitive drum 1 is charged and charged by the primary charger 2, the optical system 10, the developing device 60, the transfer device 5, and the cleaning device 6 for each color separated by the color separation filter 17. Each step of exposure, development, transfer and cleaning is performed.

以上のようにして各色のトナー像が順次転写された転写
紙は、グリッパ5aから開放され、分離爪8により転写
ドラム5bから剥離される。次いで転写Pは、転写紙搬
送系25により定着装置2oへと送られ、そこで転写紙
P上のトナー像が定着され、その後転写紙Pがトレー2
3へと排出される。
The transfer paper onto which the toner images of each color have been sequentially transferred as described above is released from the gripper 5a and peeled off from the transfer drum 5b by the separating claws 8. Next, the transfer paper P is sent to the fixing device 2o by the transfer paper conveyance system 25, where the toner image on the transfer paper P is fixed, and then the transfer paper P is transferred to the tray 2o.
It is discharged to 3.

本発明によれば、上記回転現像装置60は、回転体62
とこれに設けられた4色の現像器64とが一体化され、
これら回転体62と4色の現像器64とを一体に画像形
成装置本体50に対し着脱可能とされている。回転体6
2は、その中心を通る回転軸68を画像形成装置本体5
0の両側板に設けた軸受けによって、装置本体50内に
回転自在に取り付けられ、本実施例では、現像器64を
一体化した回転体62は軸68ごと着脱可能とされてい
る。
According to the present invention, the rotary developing device 60 includes a rotating body 62
and the four color developing devices 64 provided therein are integrated,
The rotating body 62 and the four color developing units 64 can be attached to and detached from the image forming apparatus main body 50 as a unit. Rotating body 6
2 connects the image forming apparatus main body 5 with a rotating shaft 68 passing through its center.
The rotary body 62 is rotatably mounted in the apparatus main body 50 by bearings provided on both side plates of the rotary body 50, and in this embodiment, the rotary body 62 with the developing device 64 integrated therein is removable together with the shaft 68.

従って、本複数色画像形成装置では、現像装置60の複
数色の現像器64内のトナーが次々になくなるような場
合に、画像形成装置本体50から複数色の現像器64を
回転体62ごと取り外して、新しい現像器64を備えた
回転体62に取り替えることができる。このため、従来
要していたトナー補給のサービスメンテナンスが簡素化
され、従来のように現像器64内へのトナーの補充また
は現像器64の交換を次々に行なう手間を生じることな
く容易に対処して、複数色の画像を現像して画像形成す
ることができる。また現像器64が回転体62と一体化
されているので、現像装置60の製作上のコストダウン
も図ることができる。
Therefore, in the present multi-color image forming apparatus, when the toners in the plural color developing units 64 of the developing device 60 run out one after another, the plural color developing units 64 are removed from the image forming apparatus main body 50 along with the rotating body 62. Then, the rotating body 62 can be replaced with a new developing device 64. Therefore, the service and maintenance of toner replenishment, which was required in the past, is simplified, and it can be easily handled without having to replenish toner in the developing device 64 or replacing the developing device 64 one after another as in the past. It is possible to form an image by developing a plurality of color images. Furthermore, since the developing device 64 is integrated with the rotating body 62, the manufacturing cost of the developing device 60 can be reduced.

第2図は、本発明の複数色画像形成装置の他の実施例を
示す概略断面図である。本実施例の複数色画像形成装置
は、現像装置70が水平移動式の現像装置になっている
ことが特徴である。本実施例の複数色画像形成装置のそ
の他の構成は第1図に示した複数色画像形成装置と同様
で、第2図において第1図に付した符号と同一の符号は
同一の部材を示す。
FIG. 2 is a schematic cross-sectional view showing another embodiment of the multi-color image forming apparatus of the present invention. The multi-color image forming apparatus of this embodiment is characterized in that the developing device 70 is a horizontally movable developing device. The other configuration of the multi-color image forming apparatus of this embodiment is the same as that of the multi-color image forming apparatus shown in FIG. 1, and the same reference numerals in FIG. 2 as in FIG. 1 indicate the same members. .

上記現像装置70は、感光体ドラム1の下部に向けて水
平移動可能な移動支持体72上に4色の現像器74、即
ちイエロー用現像器74Y、マゼンタ用現像器74M、
シアン用現像器74Cおよびブラック用現像器74Bを
備えており、感光体ドラムl上に色分解された各色の潜
像が形成される度に、移動支持体72が水平移動するこ
とにより、その潜像の箇所に対応する色の現像器74を
移動して、潜像を現像、可視化することを繰り返す。
The developing device 70 includes four color developing devices 74, that is, a yellow developing device 74Y, a magenta developing device 74M,
It is equipped with a cyan developing device 74C and a black developing device 74B, and each time a color-separated latent image of each color is formed on the photoreceptor drum l, the movable support 72 moves horizontally to develop the latent image. The developing device 74 of the color corresponding to the image location is moved to repeat developing and visualizing the latent image.

本発明によれば、現像装置70は同様に、移動支持体7
2とこれに設けられた4色の現像器74とが一体化され
、これら移動支持体72と4色の現像器74とを一体に
画像形成装置本体50に対し着脱可能とされている。
According to the invention, the developing device 70 also includes a movable support 7
The movable support 72 and the four color developing devices 74 provided thereon are integrated, and the movable support 72 and the four color developing devices 74 can be attached to and removed from the image forming apparatus main body 50 as a unit.

従って、本複数色画像形成装置においても、現像装置7
0の複数色の現像器74内のトナーが次々にな(なるよ
うな場合に、画像形成装置本体50から複数色の現像器
74を移動支持体72ごと取り外して、新しい現像器7
4を備えた移動支持体72に取り替えることができる。
Therefore, also in the present multi-color image forming apparatus, the developing device 7
If the toner in the developing units 74 of multiple colors of 0 is lost one after another, remove the developing units 74 of the multiple colors together with the movable support 72 from the image forming apparatus main body 50 and install a new developing unit 7.
It can be replaced by a moving support 72 with 4.

このため、同様に、従来要していたトナー補給のサービ
スメンテナンスが簡素化され、従来のように現像器74
内へのトナーの補充または現像器74の交換を次々に行
なう手間を生じることなく容易に対処して、複数色の画
像を現像して画像形成することができる。また現像器7
4が移動支持体72と一体化されているので、現像装置
7oの製作上のコストダウンも図ることができる。
Therefore, the service and maintenance of toner replenishment, which was required in the past, is also simplified, and the developer 74
Images of a plurality of colors can be developed and formed without the need for replenishing toner or replacing the developing device 74 one after another. Also, the developer 7
4 is integrated with the movable support 72, it is possible to reduce the manufacturing cost of the developing device 7o.

免豆立皇1 以上説明したように、本発明の複数色画像形成装置では
、現像装置の複数色の現像器と移動支持体とを一体化し
て、これらを一体に画像形成装置本体に着脱可能とした
ので、複数色画像の現像により複数色の現像器内のトナ
ーが次々になくなるような場合に、従来のように現像器
内へのトナーの補充または現像器の交換を次々に行なう
手間を生じることなく容易に対処して、複数色の画像を
現像して画像形成することができ、従来要していたトナ
ー補給のサービスメンテナンスが簡素化される。
Menzu Rikuo 1 As explained above, in the multi-color image forming apparatus of the present invention, the multi-color developing units of the developing device and the movable support are integrated, and these can be attached to and removed from the main body of the image forming apparatus. This eliminates the trouble of replenishing toner in the developing units or replacing the developing units one after another as in the past when the toner in the developing units for multiple colors runs out one after another due to the development of multiple color images. It is possible to develop and form a plurality of color images by easily dealing with this problem, and the service and maintenance of toner replenishment, which was conventionally required, is simplified.

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

第1図は、本発明の複数色画像形成装置の一実施例を示
す概略断面図である。 第2図は、本発明の複数色画像形成装置の他の実施例を
示す概略断面図である。 第3図は、従来の複数色画像形成装置を示す概略断面図
である。 1:感光体ドラム 50:画像形成装置本体 60.70:現像装置 62:回転体 64.74:現像器 68:軸 72:移動台
FIG. 1 is a schematic cross-sectional view showing an embodiment of a multi-color image forming apparatus of the present invention. FIG. 2 is a schematic cross-sectional view showing another embodiment of the multi-color image forming apparatus of the present invention. FIG. 3 is a schematic cross-sectional view showing a conventional multi-color image forming apparatus. 1: Photosensitive drum 50: Image forming apparatus main body 60. 70: Developing device 62: Rotating body 64. 74: Developing device 68: Shaft 72: Moving table

Claims (1)

【特許請求の範囲】[Claims] 1)像担持体上に複数色画像の各色の画像の潜像が形成
される度に、現像装置の複数色の現像器を設けた移動支
持体により、前記潜像に対応した色の現像器が前記潜像
の箇所に位置するように前記複数色の現像器を移動して
、前記潜像を現像することを前記各色の画像に対応した
潜像の全てについて行ない、複数色画像を得る複数色画
像形成装置において、前記現像装置が設けられた画像形
成装置本体に対し、前記現像装置の前記複数色の現像器
と移動支持体とを一体に着脱可能としたことを特徴とす
る複数色画像形成装置。
1) Every time a latent image of each color of a multi-color image is formed on the image carrier, a movable support provided with a plurality of color developers of a developing device generates a developer of a color corresponding to the latent image. Developing the latent images by moving the developing devices of the plurality of colors so that the latent images are located at the positions of the latent images is performed on all the latent images corresponding to the images of each color, thereby obtaining a plurality of multicolor images. A multi-color image forming apparatus, characterized in that the plurality of color developing units of the developing device and the movable support are integrally attachable and detachable to an image forming apparatus main body in which the developing device is provided. Forming device.
JP2134357A 1990-05-24 1990-05-24 Plural color image forming device Pending JPH0429166A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2134357A JPH0429166A (en) 1990-05-24 1990-05-24 Plural color image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2134357A JPH0429166A (en) 1990-05-24 1990-05-24 Plural color image forming device

Publications (1)

Publication Number Publication Date
JPH0429166A true JPH0429166A (en) 1992-01-31

Family

ID=15126481

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2134357A Pending JPH0429166A (en) 1990-05-24 1990-05-24 Plural color image forming device

Country Status (1)

Country Link
JP (1) JPH0429166A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331390A (en) * 1992-04-30 1994-07-19 Ricoh Company, Ltd. Image forming equipment having a revolver type developing device
US5797069A (en) * 1995-10-16 1998-08-18 Ricoh Company, Ltd. Developing device for image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5331390A (en) * 1992-04-30 1994-07-19 Ricoh Company, Ltd. Image forming equipment having a revolver type developing device
US5797069A (en) * 1995-10-16 1998-08-18 Ricoh Company, Ltd. Developing device for image forming apparatus

Similar Documents

Publication Publication Date Title
US5014094A (en) Process unit and a multi-color image forming apparatus using the same
JPH08190245A (en) Image forming device
JP2010262319A (en) Image forming device, and foreign matter reception method
JPH0429166A (en) Plural color image forming device
JPH1124355A (en) Multicolor image forming device
JPH06138742A (en) Image forming device
JPS61205956A (en) Image forming device
US7079804B2 (en) Image forming apparatus
JPH0478872A (en) Image forming device
JPS63292156A (en) Color copying machine
JP3378711B2 (en) Image forming device
JPH02120870A (en) Color image forming device
JP2005010389A (en) Image forming apparatus
JPH04102866A (en) Image forming device
JP3434155B2 (en) Image forming device
JP3880428B2 (en) Image forming apparatus
JPH083672B2 (en) Color image forming device
JPH02302763A (en) Color image forming device
JP2005338424A (en) Image forming apparatus
JPH0339764A (en) Color image forming device
JPH03144465A (en) Color image forming device
JPH03266857A (en) Color image forming device
JPH07134531A (en) Operation control method for copying machine
JPH10149016A (en) Developing device
JPH04190374A (en) Color image forming system and color image forming device