JPS63147179A - Electrophotographic copying machine - Google Patents
Electrophotographic copying machineInfo
- Publication number
- JPS63147179A JPS63147179A JP61294378A JP29437886A JPS63147179A JP S63147179 A JPS63147179 A JP S63147179A JP 61294378 A JP61294378 A JP 61294378A JP 29437886 A JP29437886 A JP 29437886A JP S63147179 A JPS63147179 A JP S63147179A
- Authority
- JP
- Japan
- Prior art keywords
- holding member
- photosensitive drum
- positioning
- electrostatic charger
- charger
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000004140 cleaning Methods 0.000 abstract description 6
- 108091008695 photoreceptors Proteins 0.000 description 13
- 238000007664 blowing Methods 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012212 insulator Substances 0.000 description 1
Abstract
Description
【発明の詳細な説明】
技術分野
本発明は感光体ドラムの着脱を容易とし、かつ、帯電チ
ャージャの感光体ドラムに対する位置が、使用にあたっ
て常に変動することがない電子写真複写機に関する。TECHNICAL FIELD The present invention relates to an electrophotographic copying machine in which a photoreceptor drum can be easily attached and removed, and the position of a charger relative to the photoreceptor drum does not change during use.
従来技術
従来より複写機本体からの感光体ドラムの着脱を容易な
らしめるために様々な構成が提案されている。その−例
として、少なくとも感光体ドラムを支持する手段をユニ
ット化して本体より引き出し可能に構成したものがある
。しかしながら、このものでは、帯電チャージャ等の感
光体周辺部材は本体側に設置されているため、再び本体
にセットしたとき、往々にして帯電チャーツヤ等の間に
位置ずれが起き、忠実な画像再現に支障を来たすという
欠点を有する。BACKGROUND OF THE INVENTION Various configurations have been proposed to facilitate the attachment and detachment of photosensitive drums from copying machine bodies. As an example, there is a device in which at least the means for supporting the photoreceptor drum is formed into a unit and can be pulled out from the main body. However, with this device, the parts surrounding the photoreceptor, such as the charger, are installed on the main body side, so when it is set in the main body again, positional deviations often occur between the charger and the like, resulting in poor image reproduction. It has the disadvantage of causing problems.
目 的
本発明は上記欠点に鑑みてなされたしので、その目的と
するところは、感光体ドラムの着脱が容易で、かっ、感
光体ドラムの着脱を繰り返してら帯電チャージャの位置
ずれが生じない極めて簡素な構成の電子写真複写機を提
供することにある。Purpose The present invention has been made in view of the above-mentioned drawbacks, and the object thereof is to easily attach and detach the photoconductor drum, and to prevent the charger from shifting its position even when the photoconductor drum is repeatedly attached and detached. An object of the present invention is to provide an electrophotographic copying machine with a simple configuration.
実施例 以下、添付図面に従って本発明の実施例を詳述する。Example Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
第１図において、（１）は感光体ドラム、（３）はその
支持手段で、該支持手段（３）は把手（５）を有する前
面フレーム（４ａ）と背面フレーム（４ｂ）と側面フレ
ーム（４ｃ）とでユニット体として構成された収納枠体
（４）からなり、レール部材（６）、（６）にて図示し
ない本体フレームに引出し可能に装着されている。この
支持手段（３）には上記感光体ドラム（１）と現像装置
（８）、クリーニング装置（９）等が一体的に取付けら
れ、ユニット体として構成されている。クリーニング装
置（９）は第２図、第３図に示すように、プレート（１
１）を内蔵したケース（１０）を仮ばね（１２）上に上
下動自在に設置したものである。カム（Ｉ４）は収納枠
体（４）に回転自在に装着した回転軸（１３）に固定さ
れ、該回転軸（１３）の一端に固定し１ニレバー（１６
）を介して前面フレーム（４ａ）に止着した引張りばね
（１７）にて常時反時計回り方向に付勢されている。し
たがって、クリーニング装置（９）は引張りばね（１７
）のばね力に基づいてカム（１４）がケース（１０）の
上面に圧接することにより抑圧状態に保持され、このと
きブレード（ＩＩ）の先端が感光体ドラム（１）に圧接
する。In FIG. 1, (1) is a photosensitive drum, (3) is its supporting means, and the supporting means (3) includes a front frame (4a) having a handle (5), a rear frame (4b), and a side frame ( 4c) and a storage frame (4) configured as a unit, and is detachably attached to a main body frame (not shown) by rail members (6), (6). The photosensitive drum (1), the developing device (8), the cleaning device (9), etc. are integrally attached to the supporting means (3), and is configured as a unit. As shown in FIGS. 2 and 3, the cleaning device (9) cleans the plate (1).
A case (10) containing 1) is installed on a temporary spring (12) so as to be vertically movable. The cam (I4) is fixed to a rotating shaft (13) rotatably attached to the storage frame (4), and fixed to one end of the rotating shaft (13).
) is constantly biased in the counterclockwise direction by a tension spring (17) fixed to the front frame (4a) via the front frame (4a). Therefore, the cleaning device (9) is activated by the tension spring (17).
) is held in a suppressed state by pressing the cam (14) against the upper surface of the case (10), and at this time, the tip of the blade (II) presses against the photoreceptor drum (1).
一方、（２２）はメイン帯電チャージャ、（２３）はサ
ブ帯電チャージャ、（２４）はイレーザランプ、（２５
）は熱風送風用ダクトで、これらは箱状のユニット体で
ある保持部材（２０）に図示しない絶縁体を介して設置
されている。保持部材（２０）は収納枠体（４）に感光
体ドラム（１）の回転軸（２）と平行に設けた支軸（２
Ｉ）を介して上下方向に回動自在に取付けられ、面間フ
レーム（４ａ）に固定した位置決めストッパ（７）にて
定位置に保持されている。また、保持部材（２０）は上
記カム（１４）に固定した押えばね（１５）が引張りば
ね（１７）のばね力にて先端部（２０ａ）にて圧接する
ことによりロックされている。On the other hand, (22) is a main charger, (23) is a sub charger, (24) is an eraser lamp, and (25) is a sub charger.
) is a duct for blowing hot air, and these are installed on a holding member (20) which is a box-shaped unit via an insulator (not shown). The holding member (20) is attached to a support shaft (2) provided in the storage frame (4) parallel to the rotation shaft (2) of the photoreceptor drum (1).
It is attached so as to be freely rotatable in the vertical direction via I), and is held in a fixed position by a positioning stopper (7) fixed to the interplane frame (4a). Further, the holding member (20) is locked by a pressure spring (15) fixed to the cam (14) pressed against the tip portion (20a) by the spring force of the tension spring (17).
なお、上記実施例に示したように、メイン帯電チャージ
ャ（２２）を保持部材（２０）の回動支軸（２１）に近
接して保持し、保持部材（２０）の回動先端部（２０ａ
）近傍で該保持部材（２０）を感光体（１）に対して位
置決めするストッパ（７）を設けているので、てこの原
理により、メイン帯電チャージャ（２２）の位置決め精
変はより向上する。As shown in the above embodiment, the main charger (22) is held close to the pivot shaft (21) of the holding member (20), and the rotating tip (20a) of the holding member (20)
) is provided near the stopper (7) for positioning the holding member (20) with respect to the photoreceptor (1), so the precision of positioning the main charger (22) is further improved by the principle of leverage.
以上の構成において、感光体ドラム（１）を複写機本体
から取外すには、第１ユニツトを構成する収納枠体（４
）を複写機本体から前方に引き出し、レバー（１６）を
時計回り方向に回動させてクリーニング装置（９）に対
するカム（Ｉ４）の抑圧を解除するとともに押えばね（
１５）の保持部材（２０）に対するロックを解除し、第
２ユニツトを構成する該保持部材（２０）を上方に回動
させればよい。このように、保持部材（２０）を開放位
置へ回動させると、感光体ドラム（１）の上方に開口部
（２６）が形成され、１感光体ドラム（１）はこの開口
部（２６）から容易に取出すことかできる。In the above configuration, in order to remove the photosensitive drum (1) from the copying machine main body, the storage frame (4) constituting the first unit must be removed.
) forward from the copying machine body, rotate the lever (16) clockwise to release the cam (I4) from suppressing the cleaning device (9), and press the (
15) to the holding member (20), and the holding member (20) constituting the second unit is rotated upward. In this way, when the holding member (20) is rotated to the open position, an opening (26) is formed above the photoreceptor drum (1), and one photoreceptor drum (1) is attached to the opening (26). It can be easily taken out.
効果
以上の説明から明らかなように本発明に係る電子写真複
写機によれば、感光体ドラムを着脱可能に支持する支持
手段と、少なくとも帯電チャージャを保持する保持部材
と、上記支持手段に感光体ドラムの軸方向と平行に設け
られ、上記保持手段を上記支持手段に対し回動自在に枢
支する支軸と、上記保持部材を感光体ドラムに対して所
定位置に位置決めする位置決め部材と、上記保持部材を
位置決め部材によって位置決めされる所定位置に固定す
る固定位置と所定位置からの回動が可能となる解除位置
に移動可能な固定手段と、該固定手段を上記固定位置に
付勢する付勢手段とを備えた乙のであるから、感光体ド
ラムの着脱が極めて簡単な動作で行うことができる。し
から、帯電チャージャを保持する保持部材を位置決め手
段で所定位置に位置決めするとともに、固定手段で所定
位置に固定するようにしたため、帯電チャーツヤは常時
所定位置に保持されろ。さらに、固定手段は、付勢手段
によって固定位置に付勢されているから、機械の動作中
に保持部材の位置か変動することばない。さらにまた、
固定手段を付勢手段による付勢力に抗して移動させるこ
とにより、容易に保持部材の回動を可能とする。Effects As is clear from the above description, the electrophotographic copying machine according to the present invention includes a support means for removably supporting a photoreceptor drum, a holding member for holding at least a charger, and a photoreceptor attached to the support means. a supporting shaft provided parallel to the axial direction of the drum and rotatably supporting the holding means with respect to the supporting means; a positioning member that positions the holding member at a predetermined position with respect to the photosensitive drum; A fixing means that is movable to a fixed position that fixes the holding member at a predetermined position determined by a positioning member and a release position that allows rotation from the predetermined position, and an urging force that biases the fixing means to the fixed position. Since the photoreceptor drum is equipped with the means, the photosensitive drum can be attached and detached with extremely simple operations. However, since the holding member that holds the charger is positioned at a predetermined position by the positioning means and fixed at a predetermined position by the fixing means, the charger is always held at a predetermined position. Furthermore, since the fixing means is biased to the fixed position by the biasing means, the position of the holding member does not change during operation of the machine. Furthermore,
By moving the fixing means against the urging force of the urging means, the holding member can be easily rotated.
図面は本発明に係る電子写真複写機の一実施例を示し、
第１図は斜視図、第２図は保持部材を閉じた状態の正面
図、第３図は保持部材を開放した状態の正面図である。
（１）・感光体ドラム、（２）・・・回転軸、（３）・
・・支持手段、（４）収納枠体、（７）・・ストッパ、
（８）・・現像装置、（９）・・・クリーニング装置、
（１６）・・・レバー、（１７）・弓１張りばね、（２
０）・・・保持部材、（２０ａ）・・・先端部、（２２
）・・・メイン帯電チャージャ、（２６）・・・開口部
。
特許出願人 ミノルタカメラ株式会社
代 理 人 弁理士 青 山 葆ほか２名第１図The drawings show an embodiment of an electrophotographic copying machine according to the present invention,
FIG. 1 is a perspective view, FIG. 2 is a front view with the holding member closed, and FIG. 3 is a front view with the holding member opened. (1)・Photoreceptor drum, (2)・Rotating shaft, (3)・
...Supporting means, (4) Storage frame, (7)...Stopper,
(8)...Developing device, (9)...Cleaning device,
(16) Lever, (17) Bow 1 tension spring, (2
0)...Holding member, (20a)...Tip portion, (22
)...Main charger, (26)...Opening. Patent applicant Minolta Camera Co., Ltd. Agent Patent attorney Aoyama Hajime and two others Figure 1
Claims (1)
、上記保持手段を上記支持手段に対し回動自在に枢支す
る支軸と、 上記保持部材を感光体ドラムに対して所定位置に位置決
めする位置決め部材と、 上記保持部材を位置決め部材によって位置決めされる所
定位置に固定する固定位置と所定位置からの回動が可能
となる解除位置に移動可能な固定手段と、 該固定手段を上記固定位置に付勢する付勢手段とを備え
たことを特徴とする電子写真複写機。[Scope of Claims] 1. Supporting means for removably supporting the photosensitive drum; a holding member for holding at least a charger; and the holding means provided on the supporting means in parallel with the axial direction of the photosensitive drum. a support shaft rotatably pivoting to the support means; a positioning member for positioning the holding member at a predetermined position with respect to the photosensitive drum; and fixing the holding member at a predetermined position determined by the positioning member. An electrophotographic copying apparatus comprising: a fixing means that is movable to a fixed position and a release position that allows rotation from a predetermined position; and a biasing means that biases the fixing means to the fixed position. Machine.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61294378A JPS63147179A (en) | 1986-12-10 | 1986-12-10 | Electrophotographic copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61294378A JPS63147179A (en) | 1986-12-10 | 1986-12-10 | Electrophotographic copying machine |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61294377A Division JPS62143083A (en) | 1986-12-10 | 1986-12-10 | Electrophotographic copying machine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS63147179A true JPS63147179A (en) | 1988-06-20 |
Family
ID=17806945
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61294378A Pending JPS63147179A (en) | 1986-12-10 | 1986-12-10 | Electrophotographic copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63147179A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0877305A2 (en) * | 1997-05-09 | 1998-11-11 | Lexmark International, Inc. | Imaging machine |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506785A (en) * | 1973-05-24 | 1975-01-23 | ||
| US3966316A (en) * | 1974-07-27 | 1976-06-29 | Agfa-Gevaert, A.G. | Electrostatic copying machine with removable copying drum |
| JPS5455443A (en) * | 1977-10-12 | 1979-05-02 | Ricoh Co Ltd | Developing device |
-
1986
- 1986-12-10 JP JP61294378A patent/JPS63147179A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS506785A (en) * | 1973-05-24 | 1975-01-23 | ||
| US3966316A (en) * | 1974-07-27 | 1976-06-29 | Agfa-Gevaert, A.G. | Electrostatic copying machine with removable copying drum |
| JPS5455443A (en) * | 1977-10-12 | 1979-05-02 | Ricoh Co Ltd | Developing device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0877305A2 (en) * | 1997-05-09 | 1998-11-11 | Lexmark International, Inc. | Imaging machine |
| EP0877305A3 (en) * | 1997-05-09 | 1999-01-20 | Lexmark International, Inc. | Imaging machine |
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