JP2747710B2 - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JP2747710B2 JP2747710B2 JP63323418A JP32341888A JP2747710B2 JP 2747710 B2 JP2747710 B2 JP 2747710B2 JP 63323418 A JP63323418 A JP 63323418A JP 32341888 A JP32341888 A JP 32341888A JP 2747710 B2 JP2747710 B2 JP 2747710B2
- Authority
- JP
- Japan
- Prior art keywords
- image forming
- main body
- unit
- units
- forming apparatus
- 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.)
- Expired - Fee Related
Links
Landscapes
- Control Or Security For Electrophotography (AREA)
Description
【発明の詳細な説明】 「産業上の利用分野」 本発明は、電子写真プロセスにより画像形成を行う画
像形成装置に係り、特に前記電子写真プロセス手段の一
部を構成する複数個のプロセスユニットが夫々個別に装
置本体に対し着脱自在に構成された画像形成装置に関す
る。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus for forming an image by an electrophotographic process, and in particular, a plurality of process units constituting a part of the electrophotographic process means. The present invention relates to an image forming apparatus which is configured to be detachable from an apparatus body individually.
「従来の技術」 従来よりメインテナンスの容易化と消費者レベルでの
部品交換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て該ユニットが装置本体に対し着脱
自在に構成された複写機やプリンタ等の画像形成装置は
公知である。"Conventional technology" To facilitate maintenance and replace parts at the consumer level, photoconductor drums, optical systems, developing units, transfer units, cleaning members, static eliminators, chargers, and fixing devices have been used. 2. Description of the Related Art An image forming apparatus such as a copying machine or a printer in which a part or the entirety of an electrophotographic process unit such as an apparatus is unitized and the unit is detachably attached to an apparatus main body is known.
この種の装置においては、耐久時間の相違や重量負担
の面より又コストパーフォマンスの面より前記プロセス
手段の全てを一体的にユニット化せずに、例えば感光体
ドラム、光学系、現像器、及び定着装置等を個別にユニ
ット化し、これらにクリーニング部材や帯電器等の周辺
装置を付設したものが多い。そしてこれらのユニットは
いずれも操作性の容易さの面より前カバーを開放した
後、ガイドレール等を介していずれもドラム軸方向に沿
って引き抜き可能に構成するとともに、その脱離防止と
精度よい位置決め固定を可能ならしめる為に、各ユニッ
トに隣接する装置本体側にロックレバーを設け、がロッ
クレバーにより前記各ユニットの位置決めを行うように
構成している。In this type of apparatus, for example, the photosensitive drum, the optical system, the developing device, and the like are not integrated into a single unit because of the difference in the durability time, the weight burden, and the cost performance. In many cases, the fixing device and the like are individually unitized, and peripheral devices such as a cleaning member and a charger are added to these units. Each of these units is configured to be able to be pulled out along the drum axis direction via a guide rail or the like after opening the front cover from the surface of ease of operability, and to prevent separation and accuracy. In order to enable positioning and fixing, a lock lever is provided on the apparatus main body side adjacent to each unit, and the respective units are configured to be positioned by the lock lever.
「発明が解決しようとする課題」 しかしながらかかる従来技術によれば、各ユニット毎
にロックレバーを設ける必要がある為に、これに対応し
て部品点数が大幅に増加するとともに、各ユニットの隣
接区域夫々にレバー取付部位とその操作(回動)空間を
必要とし、その分デッドスペースが増大する為に省スペ
ース化を達成し得ない。However, according to the related art, since it is necessary to provide a lock lever for each unit, the number of components is correspondingly increased, and the area adjacent to each unit is increased. Each requires a lever mounting portion and its operation (rotation) space, and the dead space increases accordingly, so that space saving cannot be achieved.
又従来より、前記ロックレバーと対面する前カバー内
壁面側に凹凸を設け、前記ロックレバーが位置決め固定
位置に回動されていない限り前カバーが閉塞し得ないよ
うな、いわゆるフェールセーフ機構を付加した装置が存
在するが、前記のようにロックレバーが複数存在する装
置では、その分ロックレバーと対面する側に設ける凹凸
が多くなり形状が複雑化するとともに、複数のユニット
を脱着させる場合にこれに対応してロックレバーの解除
動作も煩雑化する。Further, conventionally, a so-called fail-safe mechanism has been added in which irregularities are provided on the inner wall surface side of the front cover facing the lock lever so that the front cover cannot be closed unless the lock lever is rotated to the positioning and fixing position. However, in the device having a plurality of lock levers as described above, the unevenness provided on the side facing the lock lever increases, the shape becomes complicated, and when a plurality of units are detached, Accordingly, the operation of releasing the lock lever becomes complicated.
本発明は、少なくとも複数のユニットの脱離規制を一
つの規制手段で行う事を可能にし、これにより前記各種
欠点を完全に解消し得る画像形成装置を提供する事を目
的とする 「課題を解決する為の手段」 本発明は着脱自在に構成された複数個のプロセスユニ
ットを有する画像形成装置に関するもので、その特徴と
する所は、第1図に示すように、 前記プロセスユニット1,2の脱離方向とほぼ直交す
る面上に沿って段階的に位置変位可能な一つの規制手段
3を装置本体4側に取付けた点 前記規制手段3の所定位置で、選択された二つ以上
のプロセスユニット1,2の脱離規制を可能に構成した点 前記所定位置より規制手段3を順次位置変位させる
事により、前記脱離規制された各プロセスユニット1,2
の規制解除が段階的に行われるように構成した点にあ
る。SUMMARY OF THE INVENTION An object of the present invention is to provide an image forming apparatus which enables at least a plurality of units to be detached by a single regulating means, thereby completely eliminating the various disadvantages. The present invention relates to an image forming apparatus having a plurality of detachably configured process units, and the feature thereof is that, as shown in FIG. A point where one restricting means 3 capable of being displaced stepwise along a plane substantially orthogonal to the detaching direction is attached to the apparatus main body 4 side. At a predetermined position of the restricting means 3, two or more selected processes are performed. A point in which the detachment of the units 1 and 2 is configured to be possible. By sequentially displacing the regulating means 3 from the predetermined position, each of the process units 1 and 2 in which the detachment is restricted.
In that the regulations are lifted in stages.
このような構成は、好ましい構成として例えば第1図
に示すように前記規制手段3をプロセスユニット1,2の
脱離方向と直交する面上に沿って揺動可能にして且つ所
定角度位置で係止可能に装置本体4に軸支させたレバー
部材で構成するとともに、該レバー部材の揺動領域内
に、少なくとも複数のプロセスユニット1,2を配設する
事により容易に達成される。Such a configuration is preferable, for example, as shown in FIG. 1, in which the regulating means 3 is swingable along a plane perpendicular to the direction in which the process units 1 and 2 are detached, and is engaged at a predetermined angular position. This is easily achieved by using a lever member rotatably supported on the apparatus main body 4 and disposing at least a plurality of process units 1 and 2 in the swinging region of the lever member.
「作用」 かかる技術手段によれば、一つの規制手段3により複
数のプロセスユニット1,2の脱離規制が行える為に、部
品点数が大幅に削減されるとともに、一つの規制手段3
以外の操作(回動)空間が不要の為に省スペース化と小
型化を容易に達成し得る。[Operation] According to such technical means, the desorption of a plurality of process units 1 and 2 can be controlled by one control means 3, so that the number of parts is greatly reduced and one control means 3 is used.
Since no other operation (rotation) space is required, space saving and miniaturization can be easily achieved.
又一つの規制手段3で足りる事は、脱離規制及び解除
動作も又フェールセーフ機構として機能する前カバー内
壁面側の凹凸形状も単純化する。What suffices with one restricting means 3 simplifies the detachment restricting and releasing operations and the uneven shape on the inner wall surface side of the front cover which also functions as a fail-safe mechanism.
又前記規制手段3はアナログ的に移動させながら各ユ
ニット1,2毎の脱離規制(ロック)と解除を行うのでは
なく、段階的に位置変位した位置で言い換えればデジタ
ル的に夫々対応する各ユニット1,2の脱離規制(ロッ
ク)と解除が行われる為に、いずれのユニット1,2がロ
ック状態にあるかが容易に判別出来る。The restricting means 3 does not perform the restriction (locking) and release of each unit 1 and 2 while moving them in an analog manner. Since the removal (lock) and release of the units 1 and 2 are performed, it is possible to easily determine which of the units 1 and 2 is in the locked state.
「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。Hereinafter, preferred embodiments of the present invention will be illustratively described in detail with reference to the drawings. However, unless otherwise specified, the dimensions, materials, shapes, relative arrangements, and the like of the components described in this embodiment are not intended to limit the scope of the present invention thereto, but are merely illustrative examples. It's just
第1図乃至第2図は本発明の実施例に係る画像形成装
置の要部構成を示す。FIG. 1 and FIG. 2 show a main configuration of an image forming apparatus according to an embodiment of the present invention.
第1図において、1は感光体ドラム11とクリーニング
ブレード12その他の周辺装置が組込まれたドラムユニッ
ト、2は現像ローラ21、現像容器22、トナーカートリッ
ジ23等が組込まれた現像ユニットで、これらはいずれも
装置本体4の一部をなすフレーム体40に固設されたガイ
ドレール41,42を介してドラム軸方向(図上前後方向)
に沿って脱着自在に構成されている。In FIG. 1, reference numeral 1 denotes a drum unit in which a photosensitive drum 11 and a cleaning blade 12 and other peripheral devices are incorporated. Reference numeral 2 denotes a developing unit in which a developing roller 21, a developing container 22, a toner cartridge 23, and the like are incorporated. Also through the guide rails 41 and 42 fixed to the frame body 40 forming a part of the apparatus main body 4 in the drum axial direction (front-back direction in the figure)
Is configured to be detachable along.
又現像ユニット2はその前側側壁の一部を水平方向に
延設して形成した舌片部24を、前記フレーム体40とドラ
ムユニット1間に形成された空隙内に位置させるととも
に、該舌片部24の先端に設けたガイド孔24aが装置本体
4側に設けた軸部43に嵌合可能に構成する。The developing unit 2 has a tongue piece 24 formed by extending a part of the front side wall in the horizontal direction and positioned in a space formed between the frame body 40 and the drum unit 1. A guide hole 24a provided at the tip of 24 is configured to be fitted to a shaft 43 provided on the apparatus main body 4 side.
そして前記舌片部24のフレーム体40前面には周囲にフ
ランジ状方形板44を設けた回転軸45を突設し、該回転軸
45にレバー部材3を回転自在に軸支させる。On the front surface of the frame body 40 of the tongue piece portion 24, a rotating shaft 45 provided with a flange-shaped square plate 44 around the projecting portion is protruded.
The lever member 3 is rotatably supported on 45.
レバー部材3は薄肉化する事により弾性変形可能な程
度に可撓性を有する樹脂体で形成され、第2図に示すよ
うに前記回転軸45に嵌合する穴部31と、該穴部31より前
記両ユニット1,2がロック可能に舌片部24からドラムユ
ニット1に達する位置まで垂下させたレバー本体部32
と、該本体部32上面の図上右側端側より垂直上方に立上
げ、その上方側面を前記フランジ状方形板44の側壁面に
当接させた角度規制部33とからなり、前記角度規制部33
は薄肉に形成して所定のバネ力をもたせるとともに、前
記方形板44に当接する部位の一部を側方に「く」の字状
に折曲した凹部33aを設け、該凹部33aが前記レバー部材
3を回動させた際に方形板44の角部に嵌合可能に構成す
る。The lever member 3 is formed of a resin body having a degree of flexibility that can be elastically deformed by reducing the thickness thereof. As shown in FIG. The lever main body 32 is suspended from the tongue piece 24 to a position reaching the drum unit 1 so that the units 1 and 2 can be locked.
And an angle restricting portion 33 whose upper side is vertically raised from the right end side in the figure of the upper surface of the main body portion 32, and whose upper side surface is in contact with the side wall surface of the flange-shaped rectangular plate 44. 33
Is formed to be thin and has a predetermined spring force, and a concave portion 33a is formed by bending a part of a portion abutting on the square plate 44 in a く shape on the side, and the concave portion 33a is provided with the lever. When the member 3 is rotated, it can be fitted to the corner of the square plate 44.
かかる実施例によれば前記レバー部材3が第2図
(a)に示すように下方に垂下させた位置にある場合
は、舌片部24とドラムユニット1前壁面がレバー本体部
32と交差している為に、両ユニット1,2とも引き抜きは
出来ず、脱離規制される。According to this embodiment, when the lever member 3 is in a position where it is suspended downward as shown in FIG. 2 (a), the tongue piece 24 and the front wall of the drum unit 1 are connected to the lever main body.
Both units 1 and 2 cannot be pulled out because they intersect with 32, and their removal is restricted.
この状態から前記レバー部材3を時計方向に45°回動
させると、前記角度規制部33が僅かに湾曲してバネ力が
付勢されながら「く」の字状凹部33aが方形板44の角部
に係合し係止する。そしてこの状態では舌片部24がレバ
ー本体部32からの交差が解除される為に現像ユニット2
のみが引き抜き可能となる。(第2図(b)参照) そして更に前記レバー部材3を45°回動させると、前
記角度規制部33が前記角部の係合位置から脱離して方形
板44の底壁面に当接する。そしてこの状態では前記ドラ
ムユニット1もレバー本体部32との交差が解除される為
にいずれも引き抜きが可能となる。(第2図(c)参
照) 「発明の効果」 以上記載の如く本発明によれば、一つの規制手段によ
り複数のプロセスユニットの脱離規制が行える為に、部
品点数の削減、省スペース化、脱離規制及び解除動作の
容易化とフェールセーフ機構の単純化等の効果を得ると
ともに、前記脱離規制と解除動作は段階的に行う事が出
来る為に、いずれのユニットがロック状態であるか判別
が容易である。When the lever member 3 is rotated clockwise by 45 ° from this state, the angle restricting portion 33 is slightly curved and the “<”-shaped concave portion 33a is Engage and lock the part. In this state, the crossing of the tongue piece 24 from the lever main body 32 is released, so that the developing unit 2
Only can be pulled out. (Refer to FIG. 2 (b).) When the lever member 3 is further rotated by 45 °, the angle restricting portion 33 is detached from the engagement position of the corner portion and comes into contact with the bottom wall surface of the rectangular plate 44. In this state, since the intersection of the drum unit 1 with the lever main body 32 is released, the drum unit 1 can be pulled out. (See FIG. 2 (c)) "Effects of the Invention" As described above, according to the present invention, desorption of a plurality of process units can be restricted by one restricting means, so that the number of parts is reduced and space is saved. In addition to obtaining effects such as simplification of the detachment regulation and release operation and simplification of the fail-safe mechanism, the detachment regulation and release operation can be performed in a stepwise manner, so that any unit is in the locked state. It is easy to determine.
等の種々の著効を有す。And so on.
第1図乃至第2図は本発明の実施例に係る画像形成装置
の要部構成を示し、第1図はその全体正面図、第2図
(a)乃至(c)は規制手段の動作状態を示し、又第2
図(d)は該規制手段を取外した状態を示す要部側面図
である。 1:ドラムユニット(プロセスユニット)、2:現像ユニッ
ト(プロセスユニット)、3:規制手段、4:装置本体1 and 2 show the configuration of the main part of an image forming apparatus according to an embodiment of the present invention. FIG. 1 is an overall front view thereof, and FIGS. And the second
FIG. 4D is a side view of a main part showing the state where the restricting means is removed. 1: Drum unit (process unit), 2: Developing unit (process unit), 3: Regulator, 4: Main unit
Claims (1)
数個のプロセスユニットが夫々装置本体に対し着脱自在
に構成された画像形成装置において、 前記プロセスユニットの脱離方向とほぼ直交する面上に
沿って揺動可能にして且つ所定角度位置で前記プロセス
ユニットを係止可能に装置本体に軸支させた単一の規制
手段を設け、 該規制手段の揺動領域内に少なくとも複数のプロセスユ
ニットを配設するとともに、前記所定角度位置で、選択
された二つ以上のプロセスユニットの脱離規制を行いつ
つ、該所定角度位置より前記規制手段を順次位置変位さ
せる事により、前記脱離規制された各プロセスユニット
の規制解除が段階的に行われるように構成した事を特徴
とする画像形成装置。1. An image forming apparatus in which a plurality of process units constituting a part of an electrophotographic process means are detachably attached to an apparatus main body, on a surface substantially orthogonal to a detaching direction of the process unit. A single restricting means rotatably provided along the main body of the apparatus so as to be able to swing along and to be able to lock the process unit at a predetermined angular position; In addition to disposing the two or more selected process units at the predetermined angular position and sequentially displacing the restricting means from the predetermined angular position, the desorption is restricted. An image forming apparatus configured to release the regulation of each process unit step by step.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63323418A JP2747710B2 (en) | 1988-12-23 | 1988-12-23 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP63323418A JP2747710B2 (en) | 1988-12-23 | 1988-12-23 | Image forming device |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH02170168A JPH02170168A (en) | 1990-06-29 |
JP2747710B2 true JP2747710B2 (en) | 1998-05-06 |
Family
ID=18154468
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP63323418A Expired - Fee Related JP2747710B2 (en) | 1988-12-23 | 1988-12-23 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP2747710B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH05337463A (en) * | 1992-06-02 | 1993-12-21 | Sanyo Electric Co Ltd | Lid opening/closing device for appliance |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0326520Y2 (en) * | 1985-07-17 | 1991-06-07 |
-
1988
- 1988-12-23 JP JP63323418A patent/JP2747710B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
JPH02170168A (en) | 1990-06-29 |
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