JPS62209546A - Electrophotographic device - Google Patents

Electrophotographic device

Info

Publication number
JPS62209546A
JPS62209546A JP61051513A JP5151386A JPS62209546A JP S62209546 A JPS62209546 A JP S62209546A JP 61051513 A JP61051513 A JP 61051513A JP 5151386 A JP5151386 A JP 5151386A JP S62209546 A JPS62209546 A JP S62209546A
Authority
JP
Japan
Prior art keywords
unit
photoreceptor drum
drum
developing unit
fixing
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
JP61051513A
Other languages
Japanese (ja)
Inventor
Kuratsubo Matsuo
松尾　倉坪
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.)
Kyocera Corp
Original Assignee
Kyocera 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 Kyocera Corp filed Critical Kyocera Corp
Priority to JP61051513A priority Critical patent/JPS62209546A/en
Publication of JPS62209546A publication Critical patent/JPS62209546A/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
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1828—Prevention of damage or soiling, e.g. mechanical abrasion
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1604—Arrangement or disposition of the entire apparatus
    • G03G21/1623—Means to access the interior of the apparatus
    • G03G21/1633—Means to access the interior of the apparatus using doors or covers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements for connecting the different parts of the apparatus
    • G03G21/1647—Mechanical connection means
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1606—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element
    • G03G2221/1609—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the photosensitive element protective arrangements for preventing damage
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/163—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the developer unit
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts
    • G03G2221/1651—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for connecting the different parts
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Discharging, Photosensitive Material Shape In Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

PURPOSE:To prevent the damage of a photosensitive drum and to simplify a unit replacement action by releasing the fixing of a drum unit and other process units on a device main body and automatically separating the photosensitive drum from a developing unit. CONSTITUTION:When the drum unit 1 or a developing unit 2 is removed, an operator opens a front door 11, then turns a lever member 5 clockwise up to a position shown by an ideal line, holding a grip part 48. Then the engage ment of the drum unit 1 with the lever member 5 is released, and a link member 42 follows the release, turns by the prescribed angle and transmits its turn to a supporting spindle 36. A rocking member 6 turns, the developing unit 2 is pushed obliquely upward along a guide groove 35, and a developing roller 30 separates from the photosensitive drum 14. When the developing unit 2 is further pushed obliquely upward along the guide groove 35 due to the pressure of the rocking member 6, a click clack spring 45 is bent to the prescribed angle, and its direction where elasticity is energized is switched. Then a pressure lever 40 is away from a guide pin 32 and turnably rocked right above.

Description

【発明の詳細な説明】 「産業上の利用分野」 本発明は、複写機、プリンタ、ファクシミリその他の電
子写真プロセスにより画像形成を行う電子写真装置に係
り、更に詳細には、電子写真プロセス手段の少なくとも
一部を構成する一又は複数個のプロセスユニットが装置
本体に対し着脱自在に構成された電子写真装置に関する
。DETAILED DESCRIPTION OF THE INVENTION "Field of Industrial Application" The present invention relates to an electrophotographic apparatus for forming an image by an electrophotographic process such as a copying machine, a printer, or a facsimile, and more specifically relates to an electrophotographic apparatus for forming an image by an electrophotographic process. The present invention relates to an electrophotographic apparatus in which one or more process units constituting at least a part thereof are configured to be detachably attached to an apparatus main body.

「従来の技術」 入力情報に対応して変調されたレーザビームや原稿像に
対応する反射光等を用いて感光体ドラム上に形成した静
電潜像を、感光体ドラム上で可視像化した後、転写紙に
転写し所定の画像形成を行う、複写機やプリンタ等の電
子写真装置は周知であり、この種の装置においてはメイ
ンテナンスと消費者レベルでの部品交換の容易化を図る
為に、更にはカラー現像を可能ならしめる為に、感光体
ドラム、光学系、現像器、転写器、クリーニング部材、
除電器、帯電器及び定着装置等の電子写真プロセス手段
の一部又は全部をユニット化し、該ユニットが装置本体
に対し着脱自在に構成した装置が存在する。"Prior art" An electrostatic latent image formed on a photoreceptor drum using a laser beam modulated according to input information, reflected light corresponding to the original image, etc. is visualized on the photoreceptor drum. Electrophotographic devices such as copiers and printers are well-known, and these types of devices are designed to facilitate maintenance and parts replacement at the consumer level. Furthermore, in order to enable color development, photoreceptor drums, optical systems, developing devices, transfer devices, cleaning members,
2. Description of the Related Art There is an apparatus in which a part or all of electrophotographic processing means such as a static eliminator, a charger, and a fixing device are formed into a unit, and the unit is configured to be detachably attached to the apparatus main body.

そしてこの種の、特に現像色の変更やカラー現像を可能
ならしめた装置においては、色替えの都度ユニット交換
を行う際の重量負担の軽減と交換時における各種周辺装
置の破損を避ける為に、現像色の変更の為に交換が必要
な、現像器その他の部材と、現像色の変更の為に交換が
必要でない、感光体ドラムその他の部材とを、夫々別個
にユニット化して構成する場合がある。In this type of device, especially one that allows changing the developed color and color development, in order to reduce the weight burden when replacing the unit each time the color is changed and to avoid damage to various peripheral devices during replacement, In some cases, the developing device and other parts that need to be replaced to change the developed color and the photosensitive drum and other parts that do not need to be replaced to change the developed color are configured as separate units. be.

又現像色の変更やカラー現像を行わない装置においても
、現像器は、感光体ドラムやクリーナーその他のプロセ
ス部材に比較して耐久性が長い為に、現像器又は該現像
器と耐久性が長い部材を、前記感光体ドラム等と別個に
ユニット化し、夫々別個に独立して装置本体より取外し
可能に構成した装置も存在する。Also, even in devices that do not change the developed color or perform color development, the developing device has a longer durability than the photoreceptor drum, cleaner, and other process components, so the developing device or the developing device has a long durability. There is also a device in which the members are made into a unit separate from the photosensitive drum and the like, and configured so that each member can be separately and independently removed from the main body of the device.

しかしながら感光体ドラムと現像器が夫々独立して取外
し可能に構成すると、電子写真プロセスの構成上、感光
体ドラムと現像器に組込まれた現像ローラ（トナー担持
体）とは互いに接触又は極めて近接した位置に配設しで
ある為に、前記感光体ドラムを含むユニットを装置本体
より取外す又は取り付ける際に、感光体ドラムが現像ロ
ーラ表面に誤って摺擦され、感光体ドラム表面を傷付け
てしまう恐れが多々あった。However, if the photoreceptor drum and the developer are configured to be independently removable, due to the structure of the electrophotographic process, the photoreceptor drum and the developing roller (toner carrier) incorporated in the developer may come into contact with each other or be extremely close to each other. Since the unit including the photoreceptor drum is disposed at a certain position, there is a risk that the photoreceptor drum may be accidentally rubbed against the surface of the developing roller and damage the surface of the photoreceptor drum when the unit containing the photoreceptor drum is removed from or attached to the main body of the apparatus. There were many.

「発明が解決しようとする問題点」 この為、かかる装置においては、感光体ドラムから現像
器を一旦離間した後、感光体ドラム又は該感光体ドラム
を含むユニット（以下ドラムユニットという）等を装置
本体側より取外すよう構成しているが、消費者サイドで
ユニット交換が可能な、いわゆるフリーメインテナンス
の複写機が増加するにつれ、感光体ドラムから現像器を
離間させる手順を踏む事なくドラムユニット又は現像ユ
ニットを直接装置本体より取外し又は取り付けを行う場
合があり、これにより感光体ドラムの損傷事故が多々発
生していた。``Problems to be Solved by the Invention'' For this reason, in such an apparatus, after the developing device is once separated from the photoreceptor drum, the photoreceptor drum or a unit including the photoreceptor drum (hereinafter referred to as a drum unit), etc. is removed from the main body of the apparatus. However, as the number of so-called free-maintenance copiers, in which the unit can be replaced by the consumer, increases, it is now possible to remove the drum unit or developing unit from the photosensitive drum without having to take the steps to separate the developing unit from the photosensitive drum. There are cases where the photoreceptor drum is removed or attached directly from the main body of the device, and this often causes damage to the photoreceptor drum.

一方従来技術においては、前記ユニットを装置本体側に
固定する為の固定部材として一般的にポルトその他の螺
子部材を用いて固定しているが。On the other hand, in the prior art, a port or other screw member is generally used as a fixing member for fixing the unit to the main body of the apparatus.

このような螺子部材を用いた固定構造では、ドライバー
その他の特別な固定治具を必要とし、且つ締付けが適正
でない場合は、運転中に螺子部材の緩み等が発生し、前
記ユニットのガタや振動等により装置の破損につながる
場合がある。A fixing structure using such screw members requires a screwdriver or other special fixing jig, and if the screws are not tightened properly, the screw members may loosen during operation, causing backlash and vibration of the unit. etc. may lead to damage to the equipment.

本発明はかかる従来技術の欠点に鑑み、前記ユニー／　
）の装置本体との固定を解く事により自動的に感光体ド
ラムと現像器間が離間するように構成し、これにより感
光体ドラムの損傷事故防止とともに、ユニット交換動作
を簡略化し得る電子写真装置を提供する事を目的とする
。In view of the drawbacks of the prior art, the present invention provides the above-mentioned
) is configured so that the photoreceptor drum and the developing device are automatically separated by releasing the fixation from the main body of the apparatus, thereby preventing damage to the photoreceptor drum and simplifying unit replacement operations. The purpose is to provide.

又本発明の目的はドライバーその他の部材を必要とする
事なく、簡単にユニット交換を行い得る電子写真装置を
提供する事を目的とする。Another object of the present invention is to provide an electrophotographic apparatus in which the unit can be easily replaced without requiring a driver or other members.

「問題点を解決しようとする手段」 本発明はかかる技術的課題を達成する為に、電子写真プ
ロセス手段の少なくとも一部を構成する一又は複数個の
プロセスユニットが装置本体に対し着脱自在に構成され
た電子写真装置において、■前記プロセスユニットを装
置本体側に固定させる固定手段を有する点、 ■少なくとも感光体ドラムに対峙して配設されるトナー
担持体を、感光体ドラムから離接する方向に移動させる
移動手段を有する点、 ■固定手段の固定解除動作に連動して前記移動手段が動
作し、前記トナー担持体の感光体ドラムよりの離間がな
され、又前記固定手段の固定動作に連動して前記移動手
段が動作し、前記トナー担持体が感光体ドラムとの所定
対峙位置へ位置決め固定がなされるように構成した点を 必須構成要件とする電子写真装置を提案する。"Means for Solving the Problems" In order to achieve the above technical problems, the present invention has a structure in which one or more process units constituting at least a part of an electrophotographic process means can be freely attached to and detached from the main body of the apparatus. In this electrophotographic apparatus, (1) the process unit is provided with a fixing means for fixing it to the main body of the apparatus; (2) at least the toner carrier disposed facing the photoconductor drum is moved in a direction away from the photoconductor drum; (2) The moving means operates in conjunction with the fixing release operation of the fixing means to separate the toner carrier from the photosensitive drum, and also in conjunction with the fixing operation of the fixing means. An electrophotographic apparatus is proposed in which an essential component is configured such that the moving means operates and the toner carrier is positioned and fixed at a predetermined position facing the photosensitive drum.

この場合、前記固定手段と移動手段との連動は後記実施
例に示すように、両者をリンク部材と軸を介して連結さ
せ１機械的に連動可能に構成してもよく、又スイッチ手
段を用いて電気的に連動可能に構成してもよい。In this case, the interlocking of the fixing means and the moving means may be configured so that they can be mechanically interlocked by connecting them via a link member and a shaft, as shown in the embodiments described later, or by using a switch means. They may be configured to be electrically interlocked.

又本発明においては、前記プロセスユニットの内掛なく
とも一のユニットが、感光体ドラム又は該感光体ドラム
を含むユニットである事が好ましいが、必ずしもこれに
限定されない。Further, in the present invention, it is preferable that at least one unit in the process unit is a photoreceptor drum or a unit including the photoreceptor drum, but the invention is not necessarily limited to this.

「作用」 かかる技術手段によれば、前記固定手段の固定及び解除
動作に連動して前記移動手段が動作し、前記トナー担持
体が自動的に感光体ドラムより離接する為に、該トナー
担持体が感光体ドラムに接触又は近接した状態で誤って
感光体ドラム又は該感光体ドラムを含むユニットを装置
本体より引き抜く恐れがなく、これにより感光体ドラム
等の着脱動作時にドラム損傷が生じる恐れを完全に防止
出来る。"Operation" According to this technical means, the moving means operates in conjunction with the fixing and releasing operations of the fixing means, and the toner carrier automatically moves toward and away from the photoreceptor drum. There is no risk of accidentally pulling out the photoreceptor drum or the unit containing the photoreceptor drum from the main body of the apparatus when the photoreceptor drum is in contact with or in close proximity to the photoreceptor drum, thereby completely eliminating the risk of damage to the drum during attachment/detachment of the photoreceptor drum, etc. can be prevented.

又本技術手段によれば、前記固定手段の固定動作に連動
して前記移動手段が動作し、自動的に前記トナー担持体
が感光体ドラムとの所定対峙位置へ位置決め固定がなさ
れる為に、多数回ユニット交換を行ってもトナー担持体
と感光体ドラムとの現像間隔がずれる事なく、常に鮮明
な画像形成が可能となる。According to the present technical means, the moving means operates in conjunction with the fixing operation of the fixing means, and the toner carrier is automatically positioned and fixed at a predetermined position facing the photosensitive drum. Even if the unit is replaced many times, the development interval between the toner carrier and the photosensitive drum does not deviate, and clear images can always be formed.

又前記トナー担持体の位置決め固定を１弾性的付勢力に
より行われるよう構成する事により、各種駆動系の回転
時に生じる振動等によっても揺動やガタが生じる事がな
く、一層鮮明な画像形成が可能となる。Furthermore, by configuring the positioning and fixing of the toner carrier to be performed by a single elastic biasing force, there is no rocking or rattling caused by vibrations generated during rotation of various drive systems, and even clearer images can be formed. It becomes possible.

更に前記トナー担持体を組込んだ現像ユニットが、感光
体ドラムから離接する方向に移動可能に構成するととも
に、前記現像ユニットの感光体ドラムからの離間動作に
連動して、該現像ユニットに付勢された前記弾性的付勢
力が解除されるように構成する事により、前記現像ユニ
ットの交換作業が容易且つ簡単化される。Furthermore, a developing unit incorporating the toner carrier is configured to be movable in a direction toward and away from the photoreceptor drum, and the developing unit is biased in conjunction with the movement of the developing unit away from the photoreceptor drum. By configuring the developing unit so that the elastic biasing force is released, the task of replacing the developing unit is facilitated and simplified.

「実施例」 以下、図面を参照して本発明の好適な実施例を例示的に
詳しく説明する。ただしこの実施例に記載されている構
成部品の寸法、材質、形状、その相対配置などは特に特
定的な記載がない限りは、この発明の範囲をそれのみに
限定する趣旨ではなく、単なる説明例に過ぎない。"Embodiments" Hereinafter, preferred embodiments of the present invention will be described in detail by way of example with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, and relative arrangements of the components described in this example are not intended to limit the scope of this invention, but are merely illustrative examples. It's nothing more than that.

第１図乃至第５図はいずれもは本発明の実施例に係るレ
ーザプリンタを示し、第ｔＢはトレイ及はドラムユニッ
ト１．現像ユニット２、筐体３．４及び該筐体３．４に
配設されたレバー部材５、揺動部材θ及びレール７．８
等の位置関係を示す平面図、第５図はレバー部材５の作
用を示す要部正面図である。1 to 5 each show a laser printer according to an embodiment of the present invention, and tB is a tray and drum unit 1. The developing unit 2, the casing 3.4, the lever member 5 disposed on the casing 3.4, the swinging member θ, and the rail 7.8.
FIG. 5 is a front view of the main part showing the action of the lever member 5.

本装置は第１１Ｎに示すように、カセット取り付は口８
に装着された給紙カセットより給紙された記録紙が装置
内に形成された記録紙搬送路上を通過しながら画像情報
に対応した画像を転写一定着させた後、装置上面側に開
口させた排出口１０より図示しないトレイ上又はソータ
内に排紙されるよう構成されている。As shown in No. 11N, this device has a cassette installation port 8.
The recording paper fed from the paper feed cassette installed in the cassette passes through the recording paper conveyance path formed inside the device, and after transferring and depositing an image corresponding to the image information, an opening is opened on the top side of the device. The paper is discharged from the discharge port 10 onto a tray (not shown) or into a sorter.

又該装置の前側外壁中央には、開閉回部な扉Ｉ■が取り
付けられており、該層１１を開放させる事により、ドラ
ム軸１４ａ方向に引抜き及び装着回走ドラムユニット１
と、ドラムユニット１の固定と固定解除を行うレノ５一
部材５とが露出する。又前側外壁の図上右方には操作釦
と表示部からなる操作盤１２が配設されている。In addition, a door I■, which is an opening/closing part, is attached to the center of the front outer wall of the device, and by opening the layer 11, the rotating drum unit 1 can be pulled out and installed in the direction of the drum shaft 14a.
Then, the reno 51 member 5 that fixes and releases the drum unit 1 is exposed. Further, an operation panel 12 consisting of operation buttons and a display section is provided on the right side of the front outer wall in the figure.

更に該装置の上面側には開閉可能な蓋体１３が取り付け
られており、該蓋体１３を開放する事によりトナーの投
入と現像ユニット２の取り出し及び装着を行う事が出来
る。Further, an openable and closable lid 13 is attached to the top side of the device, and by opening the lid 13, toner can be added and the developing unit 2 can be taken out and installed.

ドラムユニット１は、第３図に示すように感光体ドラム
１４．クリーニング装置１５．帯電器１Ｂ及びこれらを
一体内に固着又は回転可能に軸支させる枠体１７よりな
り、該枠体１７の上端左右両角隅部にはレールガイド１
８．１９が形成されており、該レールガイド１８．１９
を案内として筐体３．４間に架設されたレール７．８上
に沿ってドラム軸１４ａ方向引抜き且つ押し込む事によ
り、該ユニット１の取り出しと所定位置への装着を容易
に行う番が出来る。As shown in FIG. 3, the drum unit 1 includes a photosensitive drum 14. Cleaning device 15. It consists of a charger 1B and a frame 17 that fixes or rotatably supports the charger 1B, and rail guides 1 are provided at both left and right corners of the upper end of the frame 17.
8.19 is formed, and the rail guide 18.19
The unit 1 can be easily taken out and installed in a predetermined position by pulling it out in the direction of the drum shaft 14a and pushing it in along the rail 7.8 installed between the casings 3.4 using as a guide.

又前記枠体１７の上面中央部を段差状に形成し、該段差
部を開口２０する事により装置本体側に固設された除電
ランプ２１の光を感光体ドラム１４表面に導くよう構成
している。Further, the center part of the upper surface of the frame 17 is formed into a stepped shape, and the stepped part is formed with an opening 20 to guide light from a static elimination lamp 21 fixedly installed on the apparatus main body side to the surface of the photoreceptor drum 14. There is.

又前記枠体１７の前端側には略方形の前カバ一部材２２
（第３図の大想像線で示す部位）が固設されており、該
前カバ一部材２２の正面にドラムユニット１を前方に引
き抜く取手部２３と、その側壁面側に長溝開口２４が形
成されており、回動操作によりレバー部材５の先端部を
前記長溝開口２４に係合させる事によりドラムユニット
１の固定（ロック）を行う事が出来る。Further, a substantially rectangular front cover member 22 is provided on the front end side of the frame body 17.
(the part shown by the large imaginary line in FIG. 3) is fixedly installed, and a handle part 23 for pulling out the drum unit 1 forward is formed on the front of the front cover member 22, and a long groove opening 24 is formed on the side wall surface thereof. The drum unit 1 can be fixed (locked) by engaging the tip of the lever member 5 with the long groove opening 24 by rotating the lever member 5.

一方感光体ドラム１４上方には、装置本体側に形成され
た支持壁２５により所定位置に固定された光走査ユニッ
）２Ｅｉが、又感光体ドラム１４下方位置には転写器２
７が、更に該転写器２７の入口側には記録紙搬送ガイド
２８とレジストローラ２９が夫々装置本体の所定位置に
配設されている。On the other hand, above the photosensitive drum 14, there is an optical scanning unit (2Ei) fixed at a predetermined position by a support wall 25 formed on the main body side of the apparatus, and below the photosensitive drum 14, there is a transfer unit 2Ei.
Further, on the entrance side of the transfer device 27, a recording paper conveyance guide 28 and a registration roller 29 are respectively disposed at predetermined positions in the main body of the apparatus.

又前記光走査ユニット２６と搬送ガイド２８間の感光体
ドラム１４側方の装置内空間には、該感光体ドラム１４
に現像ローラ３０を対峙させて現像ユニット２が配置さ
れている。Further, in the space inside the device on the side of the photoreceptor drum 14 between the optical scanning unit 26 and the conveyance guide 28, the photoreceptor drum 14 is
A developing unit 2 is arranged with a developing roller 30 facing each other.

かかる構成により光走査ユニット２Ｂより出射されたレ
ーザビームを感光体ドラム１４上に結像させて静電潜像
を形成し、該静電潜像を現像ユニット２により可視像化
した後、転写器２７により記録紙に転写し、該記録紙を
図示しない搬送路に沿って搬送させながら画像定着を行
い、排出口１０より装置外へ排紙させる事が出来る。With this configuration, the laser beam emitted from the optical scanning unit 2B is imaged on the photoreceptor drum 14 to form an electrostatic latent image, and after the electrostatic latent image is visualized by the developing unit 2, it is transferred. The image is transferred onto a recording paper by the device 27, the image is fixed while the recording paper is conveyed along a conveyance path (not shown), and the paper can be discharged from the apparatus through the discharge port 10.

次に前記レバー部材５の回動操作による現像ユニット２
の離間と位置決め固定をなす各種部材の構成について第
２図から第５図に基づいて説明する。Next, the developing unit 2 is rotated by rotating the lever member 5.
The configuration of various members for separating and positioning and fixing will be explained based on FIGS. 2 to 5.

現像ユニット２は層厚規制されたトナーを感光体ドラム
１４側の現像位置まで搬送させる現像ローラ３０と現像
容器３１からなり、前記現像容器３１の前後壁面にガイ
ドピン３２．３３が上下に突設されている。The developing unit 2 includes a developing roller 30 that transports toner whose layer thickness is regulated to a developing position on the side of the photoreceptor drum 14, and a developing container 31. Guide pins 32 and 33 are vertically protruded from the front and rear walls of the developing container 31. has been done.

そして前記現像容器３１の前後壁面と対面する筐体３．
４内壁側に、前記ガイドピン３２，３３が係合可能なガ
イド溝３５が凹設されたガイド板３４が固設されており
、装置上面側に形成された蓋体１３を開放した後、該ガ
イド溝３５を案内として現像ユニット２が装着且つ取り
出し可能に構成されている。and a housing 3 facing the front and rear walls of the developer container 31.
4. A guide plate 34 having a guide groove 35 in which the guide pins 32 and 33 can engage is fixedly provided on the inner wall side of the device. The developing unit 2 is configured to be able to be installed and taken out using the guide groove 35 as a guide.

又感光体ドラム１４対峙位置の反対側の現像ユニット２
下方空間位置には、ドラム軸１４ａと平行に支軸３６が
筐体３．４間に回転可能に軸支され、該支軸３Ｂの一側
先端部を前側筐体３，４の外方まで突設させている。Further, the developing unit 2 on the opposite side of the photosensitive drum 14 facing position
In the lower space position, a support shaft 36 is rotatably supported between the casings 3 and 4 parallel to the drum shaft 14a, and the tip of one side of the support shaft 3B extends to the outside of the front casings 3 and 4. It is installed protrudingly.

そして該支軸３Ｂの、中央側に接近した位置には一対の
揺動部材８の基端が連結されており、又前記ガイドピン
３２，３３と対応する筐体３．４内壁面側近傍には一対
の圧接レバー４０が回動可能に環設されており、更に前
側筐体３．の外方まで突設させた支軸３８−側光端部に
は他端がビン軸４３を介してレバー部材５側の弧状長穴
４１に係合するリンク部材４２基端が夫々連結されてい
る。The base ends of a pair of swinging members 8 are connected to a position close to the center of the support shaft 3B, and near the inner wall side of the casing 3.4 corresponding to the guide pins 32, 33. A pair of pressure contact levers 40 are rotatably arranged around the front housing 3. The base end of a link member 42 whose other end engages with the arcuate elongated hole 41 on the lever member 5 side via a bottle shaft 43 is connected to the light end on the side of the support shaft 38 which is provided to protrude outward. There is.

前記一対の揺動部材Ｂは、その先端を感光体ドラム１４
側の現像ユニット２下方位置まで延設し、支軸３６の回
転に追従して該揺動部材６が回動する事により現像ユニ
ット２がガイド溝３５に沿って斜め上方、言い替えれば
現像ローラ３０が感光体ドラム１４から離間する方向に
押し上げ可能に構成されている。The pair of swinging members B have their tips connected to the photosensitive drum 14.
The developing unit 2 is extended to a position below the side developing unit 2, and as the swinging member 6 rotates following the rotation of the support shaft 36, the developing unit 2 is moved diagonally upward along the guide groove 35, in other words, the developing roller 30 is configured to be able to be pushed up in a direction away from the photoreceptor drum 14.

前記一対の圧接レバー４０は現像容器３１壁面に沿って
斜め」１方に延設され、そのその中央位置でピン４４を
介してクリッククラックバネ４５の一端を係合させる。The pair of pressing levers 40 extend diagonally in one direction along the wall surface of the developer container 31, and engage one end of a click-clack spring 45 through a pin 44 at the center thereof.

そして該クリッククラックバネ４５の他端を現像容器３
１壁面より突設したピン４８に係合させる。Then, the other end of the click-clack spring 45 is connected to the developing container 3.
It is engaged with a pin 48 protruding from one wall surface.

リンク部材４２は、第５図に示すようにその先端側に前
記レバー部材５の弧状長穴４１に係合可能なピン軸４３
を取り付け、レバー部材５の回動操作に追従して所定角
度回動じ、その回動を支軸３Ｂに伝達可能に構成する。As shown in FIG. 5, the link member 42 has a pin shaft 43 on its distal end side that can be engaged with the arcuate elongated hole 41 of the lever member 5.
is attached so that it can be rotated by a predetermined angle following the rotational operation of the lever member 5, and the rotation can be transmitted to the support shaft 3B.

レバー部材５は先端側を前記長溝開口に向は延設すると
ともに、前面に突設する握り部４８の回動操作により回
転軸５ａを中心として回動可能に構成し、そして該回転
軸５ａの周囲に斜め上方位置よりドラムユニー／　ｈ側
に、その半径距離が徐々に大になる如＜９０°曲率の弧
状長穴を穿設し、前述したように該弧状長穴にピン軸４
３を介してリンク部材４２を連結する。The lever member 5 has a distal end extending toward the long groove opening, and is configured to be rotatable about a rotating shaft 5a by rotating a grip portion 48 protruding from the front surface. An arcuate long hole with a curvature of <90° is drilled around the drum unit/h side from the diagonally upper position so that the radial distance gradually increases, and as described above, the pin shaft 4 is inserted into the arcuate long hole.
The link member 42 is connected via 3.

次にかかる構成の作用を説明する。Next, the operation of this configuration will be explained.

先ずドラムユニット！又は現像ユニット２を取外す際は
、前扉１１を開けた後、握り部４８を持ってレバー部材
５を時計方向に想像線で示す位置まで回動させると、ド
ラムユニット１とし八一部材５との係合が解かれるとと
もに、リンク部材４２がこれに追従して所定角度回動し
、その回動を支軸３Ｂに伝達する。First, the drum unit! Alternatively, when removing the developing unit 2, after opening the front door 11, hold the grip part 48 and rotate the lever member 5 clockwise to the position shown by the imaginary line. When the engagement is released, the link member 42 follows this and rotates by a predetermined angle, and transmits the rotation to the support shaft 3B.

そして支軸３６の回転に追従して該揺動部材６が回動し
、現像ユニット２がガイド溝３５に沿って斜め上方に押
し上げ、現像ローラ３０が感光体ドラム１４から離間す
る。Then, the swinging member 6 rotates following the rotation of the support shaft 36, the developing unit 2 is pushed diagonally upward along the guide groove 35, and the developing roller 30 is separated from the photoreceptor drum 14.

更に前記揺動部材８の押圧により現像ユニット２がガイ
ド溝３５に沿って斜め上方に押し上げられると、ガイド
ピン３２を圧接する圧接レバー４０がこれに追従して所
定角度回動し、一端が該圧接レバー４０に係合している
クリッククラックバネ４５が所定角度まで腕曲され、こ
れにより該バネ４５の弾性力付勢方向が切換わり、前記
圧接レバー４０がガイドピン３２から離間し、垂直上方
位置まで回動係止される。Furthermore, when the developing unit 2 is pushed diagonally upward along the guide groove 35 by the pressure of the swinging member 8, the pressure contact lever 40 that presses the guide pin 32 follows this and rotates by a predetermined angle, and one end of the pressure contact lever 40 is rotated by a predetermined angle. The click-clack spring 45 engaged with the pressure contact lever 40 is bent to a predetermined angle, thereby switching the direction of biasing the elastic force of the spring 45, and the pressure contact lever 40 is separated from the guide pin 32 and vertically upward. It is rotated and locked in position.

従ってこの状態では感光体ドラム１４と現像ローラ３０
間が離間している為に、ドラムユニット１を引き抜いて
も感光体ドラム！４の損傷が生じる事はない。Therefore, in this state, the photoreceptor drum 14 and the developing roller 30
Because there is a gap between them, even if you pull out drum unit 1, the photoreceptor drum still remains! 4 damage will not occur.

又現像ユニット２においても圧接レバー４０との圧接力
が解除されフリーの状態にある為に、蓋体１３を開放す
る事により容易に該現像ユニット２を取り出す事が出来
る。Further, since the pressure contact force with the pressure contact lever 40 is released from the developing unit 2 and the developing unit 2 is in a free state, the developing unit 2 can be easily taken out by opening the lid body 13.

そして前記ドラムユニット１又は現像ユニット２を再装
着した後、レバー・部材５をドラムユニット１側に倒す
事により、ドラムユニット１の長溝開口２４とレバー部
材５とが係合し、該ドラムユニット１がロックされると
ともに、リンク部材４２を介して支軸３Ｂが反時計方向
に回動し、該支軸３Ｂの回動に追従して揺動部材６が下
方に回動し、現像ユニット２がガイド溝３５に沿ってス
ライドし、現像ローラ３０が感光体ドラム１４との所定
対峙位置に位置決めされる。After reinstalling the drum unit 1 or the developing unit 2, by tilting the lever/member 5 toward the drum unit 1, the long groove opening 24 of the drum unit 1 and the lever member 5 engage, and the drum unit 1 is locked. At the same time, the support shaft 3B rotates counterclockwise via the link member 42, the swinging member 6 rotates downward following the rotation of the support shaft 3B, and the developing unit 2 is moved into the guide groove 35. The developing roller 30 is positioned at a predetermined position facing the photosensitive drum 14.

そして更に前記現像ユニット２が下方にスライドすると
、クリッククラックバネ４５が所定角度まで腕曲変位し
、該バネ４５の弾性力付勢方向が下方に切換わり、圧接
レバー４０がガイドピン３２側に回動し、ガイドピン３
２を介して現像ユニット２を圧接し、バネ４５の弾性的
付勢力により現像ユニット２の位置決め固定を行う。When the developing unit 2 further slides downward, the click-clack spring 45 bends its arm to a predetermined angle, the elastic force biasing direction of the spring 45 is switched downward, and the pressure lever 40 is rotated toward the guide pin 32. Move and guide pin 3
2, and the developing unit 2 is positioned and fixed by the elastic biasing force of the spring 45.

従ってかかる実施例によればレバー部材５の回動操作に
より前記ドラムユニ一、ト１と現像ユニット２の離間と
ともに、該現像ユニット２の固定解除を自動的に行う事
が出来極めて簡単に且つ各種部材を損傷させる事なく、
これらのユニットの交換が可能となる。Therefore, according to this embodiment, by rotating the lever member 5, the drum units 1, 1 and the developing unit 2 can be separated from each other, and the fixing of the developing unit 2 can be automatically released. without damaging the
These units can be replaced.

「発明の効果」 以上記載した如く、本発明によれば、ドラムユ、ニット
その他のプロセスユニットの装置本体との固定を解く事
により自動的に感光体ドラムと現像器間が離間させる事
が出来、これにより感光体ドラムの損傷事故防止ととも
に、ユニット交換動作を簡略化し得る。"Effects of the Invention" As described above, according to the present invention, by releasing the fixation of the drum unit, knitting, and other process units from the main body of the apparatus, the distance between the photosensitive drum and the developing device can be automatically separated. This makes it possible to prevent damage to the photoreceptor drum and to simplify the unit replacement operation.

又本発明によれば、前記固定手段の固定動作に連動して
前記移動手段が動作し、自動的に前記トナー担持体が感
光体ドラムとの所定対峙位置へ位置決め固定がなされる
為に、多数回ユニット交換を行ってもトナー担持体と感
光体ドラムとの現像間隔がずれる：バなく、常に鮮明な
画像形成が回部となる。According to the present invention, the moving means operates in conjunction with the fixing operation of the fixing means, and the toner carrier is automatically positioned and fixed at a predetermined position facing the photosensitive drum. Even if the unit is replaced several times, the development interval between the toner carrier and the photoreceptor drum deviates: the image formation is always clear and clear without any problems.

又本発明によればドライバーその他の部材を心安とする
事なく、簡単にユニット交換を行い得る等の種々の著効
を有す。Further, the present invention has various advantages such as being able to easily replace the unit without worrying about the screwdriver or other parts.

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

第１図乃至第５図はいずれもは本発明の実施例に係るレ
ーザプリンタを示し、第１図はトレイ及ニットの位置決
め固定手段を示す斜視図、第φ図は装置内に配設される
各種部材の位置関係を示す平面図、第５図はレバー部材
の作用を示す要部正面図である。1 to 5 each show a laser printer according to an embodiment of the present invention, FIG. 1 is a perspective view showing a tray and knit positioning and fixing means, and FIG. FIG. 5 is a plan view showing the positional relationship of various members, and a front view of main parts showing the action of the lever member.

Claims (1)

【特許請求の範囲】 １）電子写真プロセス手段の少なくとも一部を構成する
一又は複数個のプロセスユニットが装置本体に対し着脱
自在に構成された電子写真装置において、前記プロセス
ユニットを装置本体側に固定させる固定手段と、少なく
とも感光体ドラムに対峙して配設されるトナー担持体を
、感光体ドラムから離接する方向に移動させる移動手段
とを有し、前記固定手段の固定解除動作に連動して前記
移動手段が動作し、前記トナー担持体の感光体ドラムよ
りの離間がなされ、又前記固定手段の固定動作に連動し
て前記移動手段が動作し、前記トナー担持体が感光体ド
ラムとの所定対峙位置へ位置決め固定がなされるように
構成した事を特徴とする電子写真装置 ２）前記トナー担持体の位置決め固定が、弾性的付勢力
により行われる事を特徴とする特許請求の範囲第１項記
載の電子写真装置 ３）前記プロセスユニットの内少なくとも一のユニット
が、感光体ドラム又は該感光体ドラムを含むユニットで
ある特許請求の範囲第１項又は第２項記載の電子写真装
置 ４）前記トナー担持体を組込んだ現像ユニットが、感光
体ドラムから離接する方向に移動可能に構成した特許請
求の範囲第１項から第３項までのいずれか１項記載の電
子写真装置 ５）前記現像ユニットの感光体ドラムからの離間動作に
連動して、該現像ユニットに付勢された第２項に記載の
弾性的付勢力が解除されるように構成した特許請求の範
囲第２項から第４項までのいずれか１項記載の電子写真
装置 ６）前記固定手段を回動可能なレバー部材で構成すると
ともに、前記移動手段を前記レバー部材の回動により揺
動しつつ、第２項に記載の弾性的付勢力に抗して現像ユ
ニットを押圧可能な揺動部材で構成した特許請求の範囲
第２項から第５項までのいずれか１項記載の電子写真装
置[Scope of Claims] 1) In an electrophotographic apparatus in which one or more process units constituting at least a part of the electrophotographic process means are configured to be detachably attached to the apparatus main body, the process unit is mounted on the apparatus main body side. The toner carrier includes a fixing means for fixing the toner carrier, and a moving means for moving at least the toner carrier disposed facing the photoreceptor drum in a direction toward and away from the photoreceptor drum, and is interlocked with the fixing release operation of the fixing means. The moving means operates to separate the toner carrier from the photoreceptor drum, and the moving means operates in conjunction with the fixing operation of the fixing means to separate the toner carrier from the photoreceptor drum. 2) An electrophotographic apparatus characterized in that the toner carrier is positioned and fixed at a predetermined opposing position.2) The electrophotographic apparatus is characterized in that the positioning and fixing of the toner carrier is performed by an elastic biasing force. 3) An electrophotographic apparatus according to claim 1 or 2, wherein at least one of the process units is a photoreceptor drum or a unit including the photoreceptor drum. 5) The electrophotographic apparatus according to any one of claims 1 to 3, wherein the developing unit incorporating the toner carrier is configured to be movable in a direction toward and away from the photoreceptor drum. Claims 2 to 3 are configured such that the elastic urging force set forth in claim 2 that is applied to the developing unit is released in conjunction with the separation movement of the developing unit from the photoreceptor drum. 6) The electrophotographic apparatus according to any one of items 4 to 4), wherein the fixing means is constituted by a rotatable lever member, and the moving means is swung by the rotation of the lever member. An electrophotographic apparatus according to any one of claims 2 to 5, comprising a swinging member capable of pressing the developing unit against the elastic biasing force described above.
JP61051513A 1986-03-11 1986-03-11 Electrophotographic device Pending JPS62209546A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61051513A JPS62209546A (en) 1986-03-11 1986-03-11 Electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61051513A JPS62209546A (en) 1986-03-11 1986-03-11 Electrophotographic device

Publications (1)

Publication Number Publication Date
JPS62209546A true JPS62209546A (en) 1987-09-14

Family

ID=12889084

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61051513A Pending JPS62209546A (en) 1986-03-11 1986-03-11 Electrophotographic device

Country Status (1)

Country Link
JP (1) JPS62209546A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191350U (en) * 1987-05-27 1988-12-09
JPH02204757A (en) * 1989-02-03 1990-08-14 Canon Inc Image forming device
US5047803A (en) * 1988-03-02 1991-09-10 Canon Kabushiki Kaisha Image forming apparatus with detachably mountable process cartridge
JP2011197078A (en) * 2010-03-17 2011-10-06 Ricoh Co Ltd Image forming apparatus
US9164470B2 (en) 2012-09-18 2015-10-20 Ricoh Company, Limited Transfer device and attachment of the transfer device to a cover of an image forming apparatus
KR20200083428A (en) * 2016-02-29 2020-07-08 캐논 가부시끼가이샤 Cartridge mountable to main assembly of image forming apparatus
US11249437B2 (en) 2016-02-29 2022-02-15 Canon Kabushiki Kaisha Developing cartridge having a frame and supporting members that are movable relative to the frame

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63191350U (en) * 1987-05-27 1988-12-09
US5047803A (en) * 1988-03-02 1991-09-10 Canon Kabushiki Kaisha Image forming apparatus with detachably mountable process cartridge
JPH02204757A (en) * 1989-02-03 1990-08-14 Canon Inc Image forming device
JP2011197078A (en) * 2010-03-17 2011-10-06 Ricoh Co Ltd Image forming apparatus
US9164470B2 (en) 2012-09-18 2015-10-20 Ricoh Company, Limited Transfer device and attachment of the transfer device to a cover of an image forming apparatus
KR20200083428A (en) * 2016-02-29 2020-07-08 캐논 가부시끼가이샤 Cartridge mountable to main assembly of image forming apparatus
US11249437B2 (en) 2016-02-29 2022-02-15 Canon Kabushiki Kaisha Developing cartridge having a frame and supporting members that are movable relative to the frame
US11372365B2 (en) 2016-02-29 2022-06-28 Canon Kabushiki Kaisha Developing apparatus, process cartridge, and image forming apparatus
US11698600B2 (en) 2016-02-29 2023-07-11 Canon Kabushiki Kaisha Developing apparatus, process cartridge, and image forming apparatus

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