JPS6315262A - Image forming device - Google Patents

Image forming device

Info

Publication number
JPS6315262A
JPS6315262A JP61159242A JP15924286A JPS6315262A JP S6315262 A JPS6315262 A JP S6315262A JP 61159242 A JP61159242 A JP 61159242A JP 15924286 A JP15924286 A JP 15924286A JP S6315262 A JPS6315262 A JP S6315262A
Authority
JP
Japan
Prior art keywords
image forming
body part
forming apparatus
paper
cartridge
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
JP61159242A
Other languages
Japanese (ja)
Inventor
Kenji Aoki
健二 青木
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.)
Seiko Epson Corp
Original Assignee
Seiko Epson Corp
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 Seiko Epson Corp filed Critical Seiko Epson Corp
Priority to JP61159242A priority Critical patent/JPS6315262A/en
Publication of JPS6315262A publication Critical patent/JPS6315262A/en
Pending 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
    • G03G21/1839—Means for handling the process cartridge in the apparatus body
    • G03G21/1842—Means for handling the process cartridge in the apparatus body for guiding and mounting the process cartridge, positioning, alignment, locks
    • 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
    • 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
    • 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
    • G03G2221/1618—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the cleaning 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
    • G03G2221/1672—Paper handling
    • G03G2221/1675—Paper handling jam treatment
    • 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
    • G03G2221/1678—Frame structures
    • G03G2221/1687—Frame structures using opening shell type machines, e.g. pivoting assemblies
    • 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
    • G03G2221/1846—Process cartridge using a handle for carrying or pulling out of the main machine

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)

Abstract

PURPOSE:To reduce an installation space, and also to easily execute the attachment and detachment of a cartridge and the removal of jammed paper, by constituting the developing device of an immovable body part and a movable body part, and providing an attachable and detachable cartridge containing a photosensitive body in this side from a light emitting position of an optical signal generating device, in a state that an aperture direction of the movable body part is the front, on the immovable body part. CONSTITUTION:A cartridge 20 is constituted by forming integrally a photosensitive body 1, an electrifying device 2 and a cleaning device 6, and can be attached and detached to and from a device body. In the inside of a movable body side 21, a transfer device 5 and a fixing device 11 are fixed and provided, and constitute the movable body part 21 as a whole. The movable body part 21 is supported by the immovable body part 23 of an image forming device by a supporting shaft 22. In case of attaching and detaching the cartridge 20, the movable body part 21 is turned in the direction as indicated with an arrow C, and the cartridge 20 guided and supported by a guide member fixed and provided on the immovable body part 23 side is attached and detached in the direction as indicated with an arrow D. In such way, an occupied space on a desk becomes small, and the replacement of the cartridge and the removal of jammed paper are also executed easily.

Description

【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子写真プロセスと元信号発生装置とを組合わ
せて構成される画像形成装置に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to an image forming apparatus constructed by combining an electrophotographic process and an original signal generating device.

〔従来の技術〕[Conventional technology]

第６図に従来考案されている電子写真式の画像形成装置
の概略構成を示す。第６図において、画像形成装置の正
面に’Ｎして、用紙スタッカー８は右側、排紙トレー１
８は左側に配置されている。FIG. 6 shows a schematic configuration of a conventionally devised electrophotographic image forming apparatus. In FIG. 6, facing the front of the image forming apparatus, the paper stacker 8 is on the right side, and the paper output tray 1
8 is placed on the left side.

第６図において、用紙は右側から送シ出されて画像形成
装置の内部を通過し、画像形成面が用紙の上側になるよ
うにして排紙トレー上に排紙される（一般的にこの状態
の排紙を「フェイスアップ排紙」と呼ぶ）。この様な構
成において、画像形成装置の巾Ｗは用紙の長さに対し約
３倍の長さを必要とし、奥行きＤは最低、用紙巾＋若干
寸法となる。又、画像形成面が用紙の下側になるようＫ
して排紙する（この状態の排紙を「フェイスダウン排紙
」と呼ぶ）方式として第７図に示すような従来例がある
。フェイスダウン排紙を採用すると、邑力された用紙は
下から順に１ページ、２ページ、３ページ・・・・・・
と積み重さなるので、画像形成面を目に見える状態にし
た時、一番上側が１ページ、２枚目が２ページ・・・・
・・となシ、改めてページ揃えをする必要がない。逆に
７工イスアツプ排紙だと、画像形成面を目に見える状態
にした時、一番上側が最終ページで一番下側が一ページ
となってしまうため、ページ揃えをする必要が生ずる。In FIG. 6, the paper is fed from the right side, passes through the inside of the image forming apparatus, and is ejected onto the paper ejection tray with the image forming surface facing upwards (generally, this state is paper ejection is called "face-up paper ejection"). In such a configuration, the width W of the image forming apparatus needs to be about three times the length of the paper, and the depth D is at least the width of the paper plus a certain dimension. Also, make sure that the image forming surface is on the bottom side of the paper.
There is a conventional example as shown in FIG. 7 as a method of discharging the paper in this state (discharging the paper in this state is called "face-down discharging"). When face-down paper ejection is adopted, the ejected paper will be 1st page, 2nd page, 3rd page, etc. from the bottom.
When the image forming surface is made visible, the top page is 1 page, the second page is 2 pages, etc.
...There is no need to align the pages again. On the other hand, when paper is ejected with a 7-way chair up, when the image forming surface is made visible, the topmost page becomes the final page and the bottommost page becomes the first page, making it necessary to align the pages.

第７図の例では画像形成装置の巾Ｗは第６図の奥行りに
同じだが、画像形成装置の奥行りは用紙長さｌに対し２
１となる。In the example of FIG. 7, the width W of the image forming device is the same as the depth in FIG. 6, but the depth of the image forming device is 2 relative to the paper length l.
It becomes 1.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

前項において説明した様に従来の画像形成装置の構成で
は、画像形成装置を設置するのに画像形成しようとする
用紙の一面積に比べ、フェイスアップ排紙方式では約３
倍、フェイスダウン方式排紙方式では約２倍の床面積が
必要となること、特にフェイスダウン排紙方式とするた
めに第７図の様な構成を採用すると、用紙を折り返えす
ために用紙のカール量が増したシ、紙搬送経路が長くな
るため用紙ジャムの発生割合が増したシする。又、紙搬
送機構が複雑となるため、高価となる他、ファーストプ
リント時間（印刷指令が与えられてから、印刷物が完全
に機体から排出されるまでの時間）が著しく長くなって
しまうという問題点を有していた。As explained in the previous section, with the configuration of conventional image forming apparatuses, compared to the area of one sheet of paper on which an image is to be formed when installing the image forming apparatus, in the face-up paper ejection method, approximately 3
The face-down paper ejection method requires approximately twice as much floor space.Especially, when adopting the configuration shown in Figure 7 for the face-down paper ejection method, the paper The amount of paper curl has increased, and the paper transport path has become longer, so the rate of paper jams has increased. Additionally, since the paper transport mechanism is complicated, it is expensive and the first print time (the time from when a print command is given until the printed material is completely ejected from the machine) becomes significantly longer. It had

さらＫ、消耗品カートリッジ（感光体を含有する）の交
換が複雑でやりに＜＜、そのためにのみ側面を自由にア
クセス出来るような設置方法しか取れず、設置スペース
が非常に大きくなる他、紙ジヤム解除のためのクラムシ
ェル方式を採用しているため、重量の重い電子写真プロ
セスのほとんどと光書通糸等を持ち上げるための強力な
バネを必要とし、その力によって変形しないようフレー
ムに大きな強度を必要とし高価となっていた。Furthermore, replacing the consumable cartridge (containing the photoreceptor) is complicated and difficult.For this reason, the only installation method that can be used is one that allows free access to the sides, which requires a very large installation space, and the paper Because it uses a clamshell method to release the jam, it requires a strong spring to lift most of the heavy electrophotographic processes and optical calligraphy threads, etc., and the frame has great strength to avoid deformation due to the force. required and was expensive.

しかも紙ジヤム解除の動作が低いところにある、貝が口
を開いたような機体内部を、身をかがめて・のぞき込む
ように作業をしなければならず、作業性が悪いばかりで
なく、重要な電子写真プロセス部材をジャムした紙を引
き出すさいよく見えないので、傷つけてしまう問題を有
していた。Moreover, the operation to release the paper jam requires bending down and peering into the inside of the machine, which is located at a low point and looks like a shell with its mouth open. When pulling out jammed paper from an electrophotographic process member, it is difficult to see clearly, so there is a problem in that it may be damaged.

本発明は上記問題点を解決し、安価で設置スペースの小
さい、小型軽量であり、しかも紙ジヤムの少ない、紙ジ
ヤムしても素人でも手を汚さず、機械を傷めずに部屋に
楽な姿勢でクリア出来、さらには消耗品カー）　ＩＪッ
ジの交換も通常の使用時の紙排出方向前面から、紙ジヤ
ム解除のための動作とほとんど同じ動作で楽な姿勢でま
ちがいなく行うことが出来る画像形成装置を提供するこ
とを目的とする。The present invention solves the above problems, and is inexpensive, requires little installation space, is small and lightweight, and has less paper jams. Even when paper jams occur, even amateurs do not get their hands dirty, do not damage the machine, and can sit comfortably in the room. This image shows that the IJ jig can be replaced from the front in the paper ejection direction during normal use, with almost the same movements as those used to release paper jams, and in a comfortable posture. The purpose is to provide a forming device.

さらに、ファーストプリント時間を著しく短縮すること
を他の目的とする。Another object of the present invention is to significantly shorten the first print time.

〔問題点を解決しようとする手段〕[Means to try to solve problems]

本発明の画像形成装置は、電子写真プロセスと光信号発
生装置を組み合わせた画像形成装置において、現像装置
を感光体上の露光部より上側に配置せしめた不動体部と
、動体部より構成し、該不動体部には、該動体部開口方
向を前方として、光傷号発生装置光出射位置より手前側
に、少くとも感光体を含む着脱可能なカートリッジを備
えたことを特徴とする。An image forming apparatus of the present invention is an image forming apparatus that combines an electrophotographic process and an optical signal generating device, and includes a stationary body part in which a developing device is disposed above an exposure part on a photoreceptor, and a moving body part, The immovable body part is provided with a removable cartridge containing at least a photoreceptor on the front side of the light output position of the optical damage signal generator with the opening direction of the movable body part facing forward.

〔作用〕[Effect]

本発明の上記の構成によれば、電子写真プロセスをたて
形に配置すべく現像装置をカートリッジに含まれる感光
体の上部に設け、装置は手前側から動体部を手前側に開
口可能として、その開口部：す、カートリッジの着脱、
紙ジヤムの排除を行うものである。According to the above configuration of the present invention, in order to vertically arrange the electrophotographic process, the developing device is provided above the photoreceptor included in the cartridge, and the moving body part of the device can be opened from the front side to the front side. The opening: for attaching and detaching the cartridge.
This is to eliminate paper jams.

〔実施例〕〔Example〕

以下、本発明による画像形成装置の構成及び特徴を図面
に従って説明する。The configuration and features of an image forming apparatus according to the present invention will be described below with reference to the drawings.

第１図は本発明の一実施例を示す画像形成装置の構成図
である。FIG. 1 is a block diagram of an image forming apparatus showing an embodiment of the present invention.

感光体１は矢印Ａ方向に回転可能に設けられ、感光体１
の周囲には帯電装置２、光信号発生装置３、現像装置４
、転写装置５、クリーニング装置６、イレース装置７が
配置され、更に感光体１の上方には用紙スタッカー８、
用紙送り出しローラー９、Ｊｌレジストローラー１０、
感光体１の下方には定着装賃１１、用紙案内板１２、排
紙ローラ１５、排風ファン１４、電源１５、が配置され
ている。画像形成装置本体背面側にはコントロール基板
１６が配置されている。又、以上のような装置は外装ケ
ース１７によって覆われている。The photoreceptor 1 is rotatably provided in the direction of arrow A, and the photoreceptor 1
A charging device 2, an optical signal generating device 3, and a developing device 4 are installed around the
, a transfer device 5, a cleaning device 6, and an erase device 7 are arranged, and further above the photoreceptor 1, a paper stacker 8,
Paper feed roller 9, Jl registration roller 10,
A fixing device 11, a paper guide plate 12, a paper discharge roller 15, an exhaust fan 14, and a power source 15 are arranged below the photoreceptor 1. A control board 16 is arranged on the back side of the main body of the image forming apparatus. Further, the above-described device is covered by an outer case 17.

本装置に：る画像形成の過程を以下に説明する。The process of image formation in this apparatus will be described below.

感光体１は、暗所では電気抵抗値が高く（絶縁体となる
）、光が照射されると該照射部分の電気抵抗値が低下す
る（電気的導体となる）という光半導体特性を示す表面
層を有している。The photoconductor 1 has a surface that exhibits optical semiconductor characteristics, such that the electrical resistance value is high in the dark (becomes an insulator), and when irradiated with light, the electrical resistance value of the irradiated portion decreases (becomes an electrical conductor). It has layers.

帯電装置２は細い金属線と接地電極との間に数にボルト
の高圧を加えることによってコロナ放電を発生させ、十
又は−の電荷が帯電装置の近傍に生ずる。The charging device 2 generates a corona discharge by applying a high voltage of several volts between a thin metal wire and a ground electrode, and a charge of 10 or - is generated in the vicinity of the charging device.

光信号発生装置５は液晶シャッターアレイ、ＬＥＤアレ
イ等光路光路い装置が採用され、コントロールボードで
作られる電気的々画像情報？光学的な信号（光のＯＮ　
、ＯＦＦ信号）に変換して出力する機能を有している。The optical signal generator 5 employs an optical path control device such as a liquid crystal shutter array or an LED array, and electrically generates image information generated by a control board. Optical signal (light ON)
, OFF signal) and outputs the converted signal.

外装ケース１７によって外光は遮断され、ケース内部が
暗い状態において、感光体１は絶縁体となっている。こ
の状態で感光体を定速で回転させると帯電装置２によっ
て発生した十又は−電荷が感光体表面に付着する（帯電
する）。更に帯電した感光体を光信号発生装置３から画
像情報に応じた光照射を行々うと、光照射された部分は
電気的導体となるので該部分の表面の電荷はアースされ
る。即ち、この状態で感光体１の表面には画像情報に応
じた電荷の存在する部分とない部分が出来上がることに
なる。（潜像が形成される）現像装置４は内部に十又は
−に帯電されたトナーを有しており、スリーブ４ａを介
して潜像部分にトナーを接触させる。感光体表面の電荷
の存在する部分にトナーを付着させるか、電荷のない部
分に付着させるかは感光体表面の帯電電荷の極性とトナ
ーの帯電電荷の極性によって決定される。External light is blocked by the exterior case 17, and the photoreceptor 1 is an insulator when the inside of the case is dark. When the photoreceptor is rotated at a constant speed in this state, charges generated by the charging device 2 are attached to the surface of the photoreceptor (charged). Furthermore, when the charged photoreceptor is irradiated with light according to image information from the optical signal generator 3, the portion irradiated with light becomes an electrical conductor, so that the charge on the surface of the portion is grounded. That is, in this state, on the surface of the photoreceptor 1, there are areas where charges exist and areas where there is no charge depending on the image information. The developing device 4 (on which the latent image is formed) contains toner charged to a positive or negative charge, and the toner is brought into contact with the latent image portion through the sleeve 4a. Whether the toner is attached to a charged portion of the photoreceptor surface or to an uncharged portion is determined by the polarity of the charge on the photoreceptor surface and the polarity of the charge of the toner.

即ち、感光体１の表面電荷が十の場合、トナーの帯電電
荷が十の極性だと感光体の表面電荷の存在しない部分に
トナーが付着するし、トナーの帯電電荷が−の極性だと
感光体１の表面電荷が存在する部分にトナーが付着する
。又、感光体１の表面電荷が−の場合、トナーの帯電電
荷が平極性だと感光体１の表面電荷の存在する部分にト
ナーが付着するし、トナーの帯電電荷が一極性だと感光
体１０表面電荷のない部分にトナーが付着する。That is, when the surface charge of the photoconductor 1 is 10, if the toner has a polarity of 10, the toner will adhere to the area of the photoconductor where there is no surface charge, and if the toner has a negative polarity, the toner will not be photosensitive. Toner adheres to portions of body 1 where surface charges exist. Furthermore, if the surface charge of the photoconductor 1 is -, if the toner charge is flat, the toner will adhere to the part of the photoconductor 1 where the surface charge exists, and if the toner charge is unipolar, the toner will stick to the photoconductor 1. 10 Toner adheres to areas with no surface charge.

一方、用紙スタッカー８に蓄えらｎた用紙は用紙送シ出
しローラ９により送り出されて用紙レジストローラ１０
の位置に待機している。On the other hand, the paper stored in the paper stacker 8 is sent out by the paper feed roller 9 and is sent out by the paper registration roller 10.
Waiting in position.

現像装置４により現像され、表面にトナーが付着した感
光体１の回転に同期して、レジストローラ１０が回転し
、感光体１とレジストローラ１０の中間に用紙が送り出
さする。Registration rollers 10 rotate in synchronization with the rotation of photoreceptor 1, which has been developed by developing device 4 and has toner adhered to its surface, and the paper is sent out between photoreceptor 1 and registration rollers 10.

転写装置５は帯電装置２と同様に細い金属線と接地電極
とで構成されており、両部品間に印加された高電圧によ
って生じた十又は−極性のイオンによって用紙の背面を
帯電させる機能を持つ。感光体１の表面に現像されたト
ナーは用紙背面の＋又は−極性の電荷によって用紙表面
に引き寄せられて転写が行なわれる。転写された用紙は
定着コーラの間を通過する間に表面のトナーが用紙に固
着される。衆知の定着方法として熱ローラによる物、圧
力ローラによる物があるが本実施例では装置の小型化を
目的として熱ローラによる方法を採用した。ローラ１１
ａの中心には赤外線ランプ等の熱源が配置されてお９、
ローラ１１ａの表面温度？一定にすべく温度コントロー
ルが行なわれている。ローラ１１ａの表面温度は使用さ
れるトナーによって変動があるが大計１４０℃〜２００
℃に設定される。用紙上のトナーはローラ１１ａの表面
に接触し、ローラから熱の供給を受けることにより、ト
ナーの成分として含まれる樹脂分が溶融し用紙繊維中に
浸み込み、用紙が定着ローラから送シ出された時点で冷
却し用紙上に固着する。Like the charging device 2, the transfer device 5 is composed of a thin metal wire and a ground electrode, and has the function of charging the back surface of the paper with ions of polarity 10 or 10-10, which are generated by a high voltage applied between the two parts. have The toner developed on the surface of the photoreceptor 1 is attracted to the surface of the paper by the + or - polar charges on the back surface of the paper and is transferred. While the transferred paper passes between the fixing cola, the toner on the surface is fixed to the paper. Well-known fixing methods include those using a heat roller and those using a pressure roller, but in this embodiment, the method using a heat roller is adopted for the purpose of downsizing the apparatus. roller 11
A heat source such as an infrared lamp is placed in the center of a.
Surface temperature of roller 11a? Temperature control is performed to keep it constant. The surface temperature of the roller 11a varies depending on the toner used, but is approximately 140°C to 200°C.
Set to ℃. The toner on the paper comes into contact with the surface of the roller 11a, and when heat is supplied from the roller, the resin contained in the toner melts and penetrates into the paper fibers, and the paper is sent out from the fixing roller. Once cooled, it cools down and solidifies onto the paper.

本実施例では転写装置５は感光体１の中心を通る水平線
上で画像形成装置の正面側に配置しである。又、光信号
発生装置３は該水平線上で画像形成装置の裏面側に配置
しである。画像形成装置を長期間使用していると用紙の
粉やトナーが画像形成装置の内部に堆積するが、この量
は重力方向下部、即ち画像形成装置の下部が一番多くな
る。In this embodiment, the transfer device 5 is arranged on the horizontal line passing through the center of the photoreceptor 1 on the front side of the image forming apparatus. Further, the optical signal generating device 3 is arranged on the back side of the image forming apparatus on the horizontal line. When an image forming apparatus is used for a long period of time, paper powder and toner accumulate inside the image forming apparatus, and the amount is greatest at the bottom in the direction of gravity, that is, at the bottom of the image forming apparatus.

転写装置５にトナーや用紙粉が付着すると高圧を印加し
てもコロナ放電が正常におこなわ些ず転写が不充分とな
る。又、光信号発生装置３にトナーや紙粉が付着すると
光の通過が遮断されるため感光体１が導電化せず、表面
の電荷が充分に逃げないという不具合を生ずる。If toner or paper dust adheres to the transfer device 5, corona discharge will occur normally even if high pressure is applied, resulting in insufficient transfer. Further, if toner or paper powder adheres to the optical signal generating device 3, the passage of light is blocked, so that the photoreceptor 1 does not become conductive, resulting in a problem that the surface charge cannot be sufficiently dissipated.

本実施例では、これらの問題点を解決するため転写帯電
装置５や光信号発生装置３を画像形成装置内下部に配置
することは避けた。In this embodiment, in order to solve these problems, the transfer charging device 5 and the optical signal generating device 3 are not disposed in the lower part of the image forming apparatus.

又、光信号発生装置として、レーザーダイオードを用い
た光学系を採用した場合だと光路長が最低でも−３００
，ＩＥ程度は必要となるため、第２図に示す如く画像形
成装置の奥行長さＤを小さくすることは困難となる。な
おｌは約３００ｕとした。Furthermore, if an optical system using a laser diode is used as the optical signal generator, the optical path length will be at least -300 mm.
, IE are required, so it is difficult to reduce the depth D of the image forming apparatus as shown in FIG. Note that l was approximately 300u.

レーザーダイオードを採用した光学系でＤを小さくしよ
うとして第３図に示す如く光学系に１ケ所の折り返えし
部を入れた方法では高速回転するポＩＪ−ｆンスキャー
ナー１９が横倒しとなるため、ポリゴンスキャナーの回
転支持装置にかかる負荷が多大な物となり高寿命を保証
することが困難となってしまう。本発明の実施例では光
信号発生装置として、液晶シャッターアレイや、ＬＥＤ
アレイを採用することによって（これらの装置の光路は
７０１１以下である）画像形成装置の奥行りを小さくす
ることが可能となった。In an attempt to reduce D with an optical system employing a laser diode, the method of inserting one folded portion in the optical system as shown in Fig. 3 causes the high-speed rotating PO IJ-f scanner 19 to fall sideways. The load placed on the rotational support device of the polygon scanner becomes so great that it becomes difficult to guarantee a long life. In the embodiments of the present invention, a liquid crystal shutter array or an LED is used as the optical signal generating device.
By employing an array (the optical path of these devices is 7011 or less), it has become possible to reduce the depth of the image forming device.

ただし折り返しミラーを使用すれば、コスト高の問題は
別にしてレーザスキャナでも構成は可能である。However, if a folding mirror is used, a laser scanner can also be used, apart from the problem of high cost.

定着装置１１を通過し虎用紙は排紙ローラ１３によって
画像形成装置外へ排紙される。本実施例では画像形成装
置の正面側に用紙の印字面が下側となるように排紙され
る。又、本実施例において一対のローラで形成される用
紙レジストローラ１０の接触部と一対のローラで形成さ
れる定着装置１１の接触部とを結ぶ線（用紙の搬送路に
なっている）が概略鉛直方向となシ、かつ感光体１は転
写位置で該鉛直線に接するように用紙レジストローラ１
０定着装置１１、感光体１が配置されている。After passing through the fixing device 11, the paper sheet is discharged to the outside of the image forming apparatus by a paper discharge roller 13. In this embodiment, the paper is discharged to the front side of the image forming apparatus with the printed surface facing downward. In addition, in this embodiment, a line connecting the contact portion of the paper registration roller 10 formed by a pair of rollers and the contact portion of the fixing device 11 formed by a pair of rollers (which serves as a paper conveyance path) is approximately The paper registration rollers 1 are aligned vertically and the photoreceptor 1 is in contact with the vertical line at the transfer position.
A fixing device 11 and a photoreceptor 1 are arranged.

転写を終了した感光体１の表面には転写しきれなかった
残余トナーが若干残っているが、クリーニング装置６に
よって、該残余トナーをかき落す。Although some residual toner remains on the surface of the photoreceptor 1 after the transfer, the cleaning device 6 scrapes off the residual toner.

更に感光体１の表面電荷を確実に逃がし表面状態を均一
にするためにイレース装置７によって均一な光照射を行
う。Further, in order to reliably release the surface charge of the photoreceptor 1 and make the surface condition uniform, uniform light irradiation is performed by the eraser 7.

排風ファン１４は定着装置１１の近傍で下側に配置し、
電源１５や定着装置１１から発生する熱を機外に排気す
る。The exhaust fan 14 is arranged below near the fixing device 11,
Heat generated from the power source 15 and fixing device 11 is exhausted to the outside of the machine.

電源１５は画像形成装置内の各ユニットに電源供給して
いるが、トランス等の重量物が電源の要素部品として存
在することから、画像形成装置内の最下部に配置した。The power supply 15 supplies power to each unit within the image forming apparatus, and since heavy objects such as transformers are present as component parts of the power supply, it is placed at the bottom of the image forming apparatus.

低面積が小さく高さが高い画像形成装置の場合、電源を
最下部に配置することは重要なポイントとなる。In the case of an image forming apparatus that has a small area and a high height, it is important to place the power supply at the bottom.

コントロー歩基板１６は光信号発生装置へ送る信号のコ
ントロールやホストコンピューターと画像形成装置のイ
ンターフェース、更に画像形成装置内各要素のシーケン
スコントロール等を実施する。本実施例では概略Ａ４用
紙サイズとなるため画像形成装置背面に配置した。The controller board 16 controls signals sent to the optical signal generator, interfaces the host computer and the image forming apparatus, and performs sequence control of each element within the image forming apparatus. In this embodiment, since the size of the paper is approximately A4, it is placed on the back side of the image forming apparatus.

さらに本実施例においては、第４図に示す如く、プロセ
ス要素の中で、感光体１と帯電装置２とクリーニング装
置６とを一体化してカートリッジ２０を構成し、装置本
体に対し着脱可能としている。そして、本画像形成装置
の動体部２１を開いて、カートリッジ２０を着脱する様
子を示す図であり図中同一部材は同一の符号を付す。動
体部２１の内側には、転写装置５と定着装置１１が固設
されており、全体として動体部２１を構成している。動
体部２１は支承軸２２により画像形成装置の不動体部２
３に支持されている。カートリッジ２０の着脱の際は動
体部２１を矢印Ｃ方向へ回動させ、不動体部２５側に固
設されている図示しないガイド部材により案内支持され
ているカートリッジ２０を矢印り方向へ着脱させる。Furthermore, in this embodiment, as shown in FIG. 4, among the process elements, a photoreceptor 1, a charging device 2, and a cleaning device 6 are integrated to form a cartridge 20, which is detachable from the main body of the device. . It is a diagram showing how the moving body part 21 of the present image forming apparatus is opened and the cartridge 20 is attached and detached, and the same members in the figure are given the same reference numerals. A transfer device 5 and a fixing device 11 are fixedly installed inside the moving body section 21, and constitute the moving body section 21 as a whole. The moving body part 21 is connected to the stationary body part 2 of the image forming apparatus by a support shaft 22.
It is supported by 3. When attaching or detaching the cartridge 20, the movable body part 21 is rotated in the direction of arrow C, and the cartridge 20, which is guided and supported by a guide member (not shown) fixed to the stationary body part 25, is attached or detached in the direction of the arrow.

さらに、第５図（ａｌ　、　（ｂｌに示す如く、定着装
置１１は、２つのローラ部３１，３２よりな）、ローラ
部３１，３２をニップ圧を解除する方向に反発部材、例
えばバネ３４を取υつけである。Furthermore, as shown in FIGS. 5(al) and 5(bl), the fixing device 11 consists of two roller parts 31 and 32. In addition, a repulsive member, such as a spring 34, is applied to the roller parts 31 and 32 in a direction that releases the nip pressure. It's a matter of discretion.

したがって、動体部２１を開いた時には、ニップ圧が解
除され、閉じるとローラ部３２が、度当り部材３３によ
って押されて、通常の定着のニップ圧が得られる。Therefore, when the moving body part 21 is opened, the nip pressure is released, and when it is closed, the roller part 32 is pushed by the perpendicular member 33, and the normal nip pressure for fixing is obtained.

〔発明の効果〕〔Effect of the invention〕

以上述べたように本発明によれば、低面積が小さいので
画像形成装置の机上占有スペースが小さくて済む。特に
本実施例の如く奥行が１７０ｍｍ＜らいの寸法だと、一
般的なデスクサイズの奥行寸法７００朋に対し、Ａ４用
耘を正面側に排紙しても、Ａ４用紙長さ３００　ｙｙｒ
と画像形成装置の奥行寸法１７０訂を合算しても４７０
ｍｍ＜らいとなり充分余裕のある値となる。更に正面側
に排紙される構成としたことにより、操作者が出力され
た用紙を取扱い易い利点も有する。又、画像形成装置上
部より用紙が挿入され正面側に排紙されることによって
従来になくシンプルな紙搬送経路でフェイスダウン排紙
方式を実現している。As described above, according to the present invention, since the surface area is small, the desk space occupied by the image forming apparatus can be small. In particular, if the depth is 170 mm or less as in this example, the length of the A4 paper will be 300 yyr even if the A4 paper is discharged to the front, compared to the depth of a typical desk size of 700 mm.
Even if you add up the depth dimension of the image forming device (170), it is 470.
mm < leprosy, which is a value with sufficient margin. Further, since the paper is ejected to the front side, there is an advantage that the operator can easily handle the output paper. Furthermore, by inserting paper from the top of the image forming apparatus and discharging it toward the front side, a face-down paper discharging method is realized with a paper conveyance path that is simpler than ever before.

さらにファーストプリント時間ｋＢ　ｐ　ｐｍ機では通
常２５〜３０秒必要とするものを実施例ではＡ４サイズ
の場合、１２秒に短縮出来た。Furthermore, the first print time, which normally requires 25 to 30 seconds with a kB ppm machine, was reduced to 12 seconds in the case of A4 size in this example.

さらにカートリッジ交換・紙ジヤム排除が容易に楽な姿
勢で行なうことが出来るし、作業の手もとがよく見える
ので、電子写真プロセス部材を誤まって破損することが
なくなった。Furthermore, cartridge replacement and paper jam removal can be done easily and in a comfortable position, and since the work area can be clearly seen, it is no longer possible to accidentally damage electrophotographic process components.

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

第１図は本発明の画像形成装置の一実施例を示す断面図
。 第２図は光信号発生装置としてレーザーダイオードを用
いた本発明の画像形成装置の実施例説明図。 第３図はレーザー光学経路に折り返しミラーを用いた本
発明の画像形成装置の実施例説明図。 第４図は、本発明の一実施例で、動体部の開口とカート
リッジ着脱の方向を示す図。 第５図（ａ）　、　（ｂ）は、本発明の一実施例で、定
着装置のニップ圧を、動体部の開閉により自動的に行な
わせることを示す図。 第６図は、従来例の画像形成装置で、フェイス、アンプ
で排紙する例の説明図。 第７図は、従来例の画像形成装置で、正面側から給紙を
行ない、画像形成装置上部にフェイスダウンで排紙する
例の説明図。 １・・・・・・感光体 ２・・・・・・帯電装置 ３・・・・・・光信号発生装置 ４・・・・・・現像装置 ５・・・・・・転写装置 ６・・・・・・クリーニング装置 ７・・・・・・イレース装置 ８・・・・・・用紙スタッカー ９・・・・・・用紙送り出しローラ １０・・・用紙レジストローラ １１・・・定着装置 １２・・・用紙案内板 １３・・・排紙ローラ １４・・・排風ファン １５・・・電源 １６・・・コントロー基板 １７・・・外装ケース １８・・・排紙トレー １９・・・ポリゴンミラー ２０・・・カートリッジ ２１・・・動体部 ２２・・・支承軸 ２３・・・不動体部 ２４・・・把手 ３１・・・ローラ一部 ３２・・・ローラ一部 ３３・・・度当り部材 ３４・・・反発部材 以上 出願人　セイコーエプソン株式会社 代理人弁理士　最　上　　務他１名 グ Ｊ −一子 ン １； ぐＱ コ ン 第３図 Ｎ　足１シｉFIG. 1 is a sectional view showing an embodiment of an image forming apparatus of the present invention. FIG. 2 is an explanatory diagram of an embodiment of the image forming apparatus of the present invention using a laser diode as an optical signal generating device. FIG. 3 is an explanatory diagram of an embodiment of the image forming apparatus of the present invention using a folding mirror in the laser optical path. FIG. 4 is a diagram showing the opening of the moving body part and the direction of attaching and detaching the cartridge in one embodiment of the present invention. FIGS. 5(a) and 5(b) are diagrams showing that in one embodiment of the present invention, the nip pressure of the fixing device is automatically controlled by opening and closing the moving body part. FIG. 6 is an explanatory diagram of an example of a conventional image forming apparatus in which paper is ejected by a face and an amplifier. FIG. 7 is an explanatory diagram of an example of a conventional image forming apparatus in which paper is fed from the front side and paper is discharged face down onto the top of the image forming apparatus. 1...Photoreceptor 2...Charging device 3...Optical signal generating device 4...Developing device 5...Transfer device 6... ... Cleaning device 7 ... Erase device 8 ... Paper stacker 9 ... Paper feed roller 10 ... Paper registration roller 11 ... Fixing device 12 ...・Paper guide plate 13 ・Paper discharge roller 14 ・Exhaust fan 15 ・Power supply 16 ・Control board 17 ・Exterior case 18 ・Paper discharge tray 19 ・Polygon mirror 20 ・...Cartridge 21...Moving body part 22...Support shaft 23...Non-moving body part 24...Handle 31...Roller part 32...Roller part 33...Block member 34 ... Repulsion member and more Applicants Seiko Epson Co., Ltd. Representative Patent Attorney Tsutomu Mogami and 1 other person GuJ - Ichiko 1;

Claims (8)

【特許請求の範囲】[Claims] （１）電子写真プロセスと光信号発生装置を組み合わせ
た画像形成装置において、現像装置を感光体上の露光部
より上側に配置せしめた不動体部と動体部より成り、該
不動体部には、該動体部開口方向を前方として該光信号
発生装置光出射位置より前方方向に、少く共感光体を含
む着脱可能なカートリッジを備えたことを特徴とする画
像形成装置。(1) An image forming apparatus that combines an electrophotographic process and an optical signal generation device is comprised of a stationary body part and a moving body part in which a developing device is disposed above the exposure area on the photoreceptor, and the stationary body part includes: An image forming apparatus comprising: a removable cartridge containing a small number of empathic photons in a forward direction from a light output position of the optical signal generator with the opening direction of the moving body portion facing forward. （２）該不動体部に、該現像装置及び該光信号発生装置
を配置したことを特徴とする特許請求範囲第１項記載の
画像形成装置。(2) The image forming apparatus according to claim 1, wherein the developing device and the optical signal generating device are disposed in the immovable body portion. （３）該カートリッジに、該感光体、帯電装置、クリー
ニング装置を搭載したことを特徴とする特許請求範囲第
１項記載の画像形成装置。(3) The image forming apparatus according to claim 1, wherein the photoreceptor, charging device, and cleaning device are mounted on the cartridge. （４）該不動体部と該動体部の間に通紙径路を配置し、
該カートリッジを該動体部を開口せしめた方向に又は方
向から着脱することを特徴とする特許請求範囲第一項記
載の画像形成装置。(4) disposing a paper passage path between the stationary body part and the moving body part;
The image forming apparatus according to claim 1, wherein the cartridge is attached and detached in the direction in which the moving body portion is opened or from the direction in which the moving body portion is opened. （５）該不動体部上方に未印刷用紙を蓄積、供給する手
段を設けたことを特徴とする特許請求範囲第１項記載の
画像形成装置。(5) The image forming apparatus according to claim 1, further comprising means for accumulating and supplying unprinted paper above the stationary body part. （６）定着装置を該動体部に設けたことを特徴とする特
許請求範囲第１項記載の画像形成装置。(6) The image forming apparatus according to claim 1, wherein a fixing device is provided in the moving body section. （７）定着装置のニップ圧が該動体部を開口すると自動
的に解除されることを特徴とする特許請求範囲第１項記
載の画像形成装置。(7) The image forming apparatus according to claim 1, wherein the nip pressure of the fixing device is automatically released when the moving body section is opened. （８）該動体部の紙径路の少くとも一部分は、該動体部
外側ケースと一体に構成したことを特徴とする特許請求
範囲第１項記載の画像形成装置。(8) The image forming apparatus according to claim 1, wherein at least a portion of the paper path of the moving body section is constructed integrally with the outer case of the moving body section.
JP61159242A 1986-07-07 1986-07-07 Image forming device Pending JPS6315262A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61159242A JPS6315262A (en) 1986-07-07 1986-07-07 Image forming device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61159242A JPS6315262A (en) 1986-07-07 1986-07-07 Image forming device

Publications (1)

Publication Number Publication Date
JPS6315262A true JPS6315262A (en) 1988-01-22

Family

ID=15689451

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61159242A Pending JPS6315262A (en) 1986-07-07 1986-07-07 Image forming device

Country Status (1)

Country Link
JP (1) JPS6315262A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449059A (en) * 1987-08-19 1989-02-23 Canon Kk Image forming device
JPH0264658A (en) * 1988-08-31 1990-03-05 Seiko Epson Corp Page printer
JPH0272985A (en) * 1988-09-07 1990-03-13 Seiko Epson Corp Page printer
JPH02135375A (en) * 1988-11-16 1990-05-24 Ricoh Co Ltd Electrophotographic image forming device
JP2018084734A (en) * 2016-11-25 2018-05-31 キヤノン株式会社 Image forming apparatus

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6449059A (en) * 1987-08-19 1989-02-23 Canon Kk Image forming device
JPH0264658A (en) * 1988-08-31 1990-03-05 Seiko Epson Corp Page printer
JPH0272985A (en) * 1988-09-07 1990-03-13 Seiko Epson Corp Page printer
JPH02135375A (en) * 1988-11-16 1990-05-24 Ricoh Co Ltd Electrophotographic image forming device
JP2018084734A (en) * 2016-11-25 2018-05-31 キヤノン株式会社 Image forming apparatus
JP2021184092A (en) * 2016-11-25 2021-12-02 キヤノン株式会社 Image forming apparatus

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