JPS62201466A - Copying machine - Google Patents
Copying machineInfo
- Publication number
- JPS62201466A JPS62201466A JP61045052A JP4505286A JPS62201466A JP S62201466 A JPS62201466 A JP S62201466A JP 61045052 A JP61045052 A JP 61045052A JP 4505286 A JP4505286 A JP 4505286A JP S62201466 A JPS62201466 A JP S62201466A
- Authority
- JP
- Japan
- Prior art keywords
- copying machine
- transfer device
- process unit
- housing
- opening
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 claims abstract description 49
- 238000007789 sealing Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000003780 insertion Methods 0.000 claims description 3
- 230000037431 insertion Effects 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 239000000428 dust Substances 0.000 abstract description 2
- 230000009545 invasion Effects 0.000 abstract 1
- 108091008695 photoreceptors Proteins 0.000 description 25
- 238000011144 upstream manufacturing Methods 0.000 description 8
- 230000003287 optical effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 235000010724 Wisteria floribunda Nutrition 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002985 plastic film Substances 0.000 description 1
- 229920006255 plastic film Polymers 0.000 description 1
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
- G03G21/1832—Shielding members, shutter, e.g. light, heat shielding, prevention of toner scattering
-
- 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
- G03G21/1628—Clamshell type
-
- 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
- G03G2221/1642—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for the transfer 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
- G03G2221/1654—Locks and means for positioning or alignment
-
- 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
- G03G2221/1693—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements and complete machine concepts for charging
-
- 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)
Abstract
Description
【発明の詳細な説明】 ３、 ■の量 なｉ′日 （産業上の利用分野） 本発明は、小型、軽量であり、複写機本体と。[Detailed description of the invention] 3. Amount of ■i' day (Industrial application field) The present invention is small, lightweight, and has a main body of a copying machine.
該複写機本体に対して着脱可能なプロセスユニットとを
有する複写機に関する。The present invention relates to a copying machine having a process unit that is detachable from the copying machine main body.
（従来の技術）
近時、電子写真複写機では、使用により劣化が進行し、
あるいは使用により消耗する感光体や現像装置等を一体
化し、複写機本体に対して着脱可能に構成して、消耗品
等の交換を容易にしたものが開発されている。例えば、
特開昭５９−６１８５０号公報には、感光体、帯電装置
、現像装置およびクリーニング装置を一体化したプロセ
スユニットが開示されている。該プロセスユニットは、
転写装置を含まず５該転写装置は複写機本体に取りつけ
られている。複写機本体に取付けられた転写装置とユニ
ットに収容された感光体との間隙で形成される記録紙の
搬送路を境界として、ユニットの下部が形成されている
。(Prior art) Recently, electrophotographic copying machines have been subject to deterioration due to use.
Alternatively, a copying machine has been developed in which a photoreceptor, a developing device, etc., which wear out with use, are integrated and configured to be detachable from the main body of the copying machine, thereby making it easy to replace consumables and the like. for example,
JP-A-59-61850 discloses a process unit that integrates a photoreceptor, a charging device, a developing device, and a cleaning device. The process unit is
This does not include a transfer device, and the transfer device is attached to the main body of the copying machine. The lower part of the unit is defined by a recording paper transport path formed by a gap between a transfer device attached to the copying machine main body and a photoreceptor housed in the unit.
このようなプロセスユニットでは、該プロセスユニット
が複写機本体に装着された場合に、感光体表面と転写装
置とを記録紙の搬送路を介して相互に対向させる必要が
ある。一方、複写機本体からプロセスユニットを離脱さ
せた場合には、感光体表面を保護するために、あるいは
プロセスユニット内のトナーが外部へ飛散することを防
止するために、感光体がプロセスユニットのハウジング
内に収納されるように、プロセスユニットを密閉状態に
閉塞する必要がある。このため、前記特開昭５９−６１
８５０号公報に開示のプロセスユニットでは、感光体を
覆うための特殊なドラムカバーが配設され、複写機本体
に装着した場合に、このカバーを開放し感光体表面を露
出させて転写装置に対向させ２反対にユニットを複写機
本体から離脱させた場合にこのカバーで感光体表面を覆
うことが行われる。このようなドラムカバーは、狭い空
間にて開閉されるため、複雑な機構を必要とする。In such a process unit, when the process unit is installed in a copying machine main body, the surface of the photoreceptor and the transfer device must be opposed to each other via the recording paper conveyance path. On the other hand, when the process unit is removed from the copying machine main body, the photoconductor is placed inside the process unit housing in order to protect the surface of the photoconductor or to prevent the toner inside the process unit from scattering outside. The process unit needs to be hermetically sealed so that it is housed inside. For this reason, the above-mentioned Japanese Patent Application Laid-Open No. 59-61
In the process unit disclosed in Publication No. 850, a special drum cover is provided to cover the photoreceptor, and when installed in the main body of the copying machine, the cover is opened to expose the surface of the photoreceptor and face the transfer device. 2. Conversely, when the unit is removed from the main body of the copying machine, the surface of the photoreceptor is covered with this cover. Such a drum cover requires a complicated mechanism because it is opened and closed in a narrow space.
また、ドラムカバーは、簡単に開放できるため。Also, the drum cover can be opened easily.
複写機の使用者は誤って感光体表面に触れるおそれがあ
る。ドラムカバーの開放により、トナーが周囲に飛散す
るおそれもある。A user of the copying machine may accidentally touch the surface of the photoreceptor. When the drum cover is opened, toner may be scattered around.
（発明が解決しようとする問題点）
本発明は９上記従来の問題点を解決するものであり、そ
の目的は、簡潔な構造であって、感光体の表面に使用者
が誤って触れるおそれがなく、そのために、複写画像の
品質を低下させるおそれのない複写機を提供することに
ある。本発明の他の目的は、転写装置のみを感光体等と
別に、容易に取換えることができる複写機を提供するこ
とにある。(Problems to be Solved by the Invention) The present invention solves the above-mentioned 9 conventional problems, and its purpose is to provide a simple structure that prevents the user from accidentally touching the surface of the photoreceptor. Therefore, it is an object of the present invention to provide a copying machine that does not cause the quality of copied images to deteriorate. Another object of the present invention is to provide a copying machine in which only the transfer device can be easily replaced separately from the photoreceptor and the like.
（問題点を解決するための手段）
本発明は、転写装置を備えつけた複写機本体と２該複写
機本体に着脱可能なプロセスユニットとを有し、該プロ
セスユニットは、そのハウジング内に一体的に固定され
た感光体、帯電装置、現像装置およびクリーニング装置
と、ハウジング内の感光体下方域に形成された転写室と
、該感光体と該転写室との間を通ってハウジングを貫通
する記録紙搬送路と、ハウジングに設けられる該転写装
置を該転写室内に挿入するための転写装置挿入用開口と
、該開口を開閉し得るシール部材とを備えてなり、その
ことにより上記目的が達成される。(Means for Solving the Problems) The present invention has a copying machine main body equipped with a transfer device and a process unit that is removably attached to the copying machine main body, and the process unit is integrated in the housing. a photoconductor, a charging device, a developing device, and a cleaning device fixed to the housing; a transfer chamber formed in an area below the photoconductor in the housing; and a recording device that passes between the photoconductor and the transfer chamber and penetrates the housing. The above object is achieved by comprising a paper conveyance path, a transfer device insertion opening provided in the housing for inserting the transfer device into the transfer chamber, and a sealing member capable of opening and closing the opening. Ru.
（実施例） 以下に本発明の実施例について説明する。(Example) Examples of the present invention will be described below.
第１図および第２図に示すように１本発明の複写機は１
例えば電子写真式の複写機本体１０とプロセスユニット
２０とを有する。該複写機本体ｌＯは。As shown in FIGS. 1 and 2, the copying machine of the present invention has a
For example, it includes an electrophotographic copying machine main body 10 and a process unit 20. The copying machine main body lO is.
上部半休１６と下部半体１７とが記録紙搬送経路の上流
部１３ａおよび下流部１３ｂを境として枢軸１９により
回動可能に支持されている。プロセスユニット２０は、
上部半体１６にその側方からスライドされて装着される
。An upper half body 16 and a lower half body 17 are rotatably supported by a pivot shaft 19 with an upstream portion 13a and a downstream portion 13b of the recording paper conveyance path as boundaries. The process unit 20 is
It is slid and attached to the upper half body 16 from the side thereof.
該プロセスユニット２０は、ハウジング２６の中央部に
回転可能に配設された感光体としての感光体ドラム２１
．帯電装置２２．現像装置２３．およびクリーニング２
５を有し、これらがハウジング２６に一体的に固定され
ている。帯電袋！２２は感光体ドラム２１の上方に位置
する。現像装置２３は、該帯電装置２２の感光体ドラム
２１回転方向下流側に配設されている。クリーニング装
置２５は、帯電装置２２の感光体ドラム２１回転方向上
流側に配設されている。ハウジング２６の上面には、ス
リット２６ｃが開設されている。該スリン）２６ｃは帯
電装置２２と現像装置２３との間に位置する。The process unit 20 includes a photoreceptor drum 21 as a photoreceptor rotatably disposed in the center of a housing 26.
．． Charging device 22. Developing device 23. and cleaning 2
5, which are integrally fixed to the housing 26. Charged bag! 22 is located above the photosensitive drum 21 . The developing device 23 is disposed downstream of the charging device 22 in the rotational direction of the photosensitive drum 21 . The cleaning device 25 is disposed upstream of the charging device 22 in the rotational direction of the photoreceptor drum 21 . A slit 26c is provided in the upper surface of the housing 26. The sulin 26c is located between the charging device 22 and the developing device 23.
ハウジング２６の下部には転写室２４が形成されている
。該転写室２４は感光体ドラム２１の下方域に位置する
。該転写室２４の感光体ドラム２１近傍には。A transfer chamber 24 is formed in the lower part of the housing 26 . The transfer chamber 24 is located below the photosensitive drum 21. In the vicinity of the photosensitive drum 21 of the transfer chamber 24.
ハウジング２６を貫通する形で、記録紙搬送路２７が形
成されている。したがって、該記録紙搬送路２７の上流
側は、ハウジング２６に形成された搬入口２６ａに連な
り、記録紙搬送路２７の下流側は、ハウジング２６に形
成された搬出口２６ｂに連なっている。記録紙は、該記
録紙搬送路２７に沿って現像装置２３の下方域からこの
ハウジング２６内に入り、ここでトナー像の転写をうけ
たのち、ハウジング２６からクリーニング装置２５の下
方域に向かって搬送される。A recording paper conveyance path 27 is formed to penetrate the housing 26 . Therefore, the upstream side of the recording paper conveyance path 27 is connected to an inlet 26a formed in the housing 26, and the downstream side of the recording paper conveyance path 27 is connected to an outlet 26b formed in the housing 26. The recording paper enters the housing 26 from the lower area of the developing device 23 along the recording paper conveyance path 27, receives the toner image there, and then moves from the housing 26 to the lower area of the cleaning device 25. transported.
ハウジング２６外から搬入口２６ａを通じてハウジング
２６内へ搬入される記録紙が、トナー像を転写されたの
ち、搬出口２６ｂからハウジング２６外へ円滑に搬出さ
れるためにも、搬入口２６ａは、搬出口２６ｂよりも適
度に高い位置（感光体ドラム２１に近接した位置）に設
けられていることが好ましい。In order for the recording paper carried into the housing 26 from outside the housing 26 through the carry-in port 26a to have a toner image transferred thereon, the paper is smoothly carried out of the housing 26 from the carry-in port 26b. It is preferable that the outlet 26b be provided at a position appropriately higher than the outlet 26b (a position close to the photoreceptor drum 21).
記録紙搬送路２７の上流側には、導入板２８が配設され
ている。また、該記録紙搬送路２７の下流側には導出板
２９が配設されている。導入板２８は、ハウジング２６
の搬入ロ２６ａ下縁部から下流側に延出しており、その
下流側端部が感光体ドラム２１に接近するように上方へ
傾斜している。導出板２９は、ｍ出口２６ｂの下縁部か
ら上流側に延出している。該導出板２９の下流側端部も
同じく感光体ドラム２１に接近するように上方へ傾斜し
ている。An introduction plate 28 is provided on the upstream side of the recording paper conveyance path 27 . Further, a guide plate 29 is provided on the downstream side of the recording paper transport path 27. The introduction plate 28 is connected to the housing 26
It extends downstream from the lower edge of the loading bay 26a, and its downstream end is inclined upward so as to approach the photoreceptor drum 21. The guide plate 29 extends upstream from the lower edge of the m outlet 26b. The downstream end of the guide plate 29 is also inclined upward so as to approach the photosensitive drum 21.
プロセスユニット２０における感光体ドラム２１および
帯電装置２２の寿命は、現像装置２３内に収納されたト
ナー量を消費するのに要する期間にほぼ等しくなってい
る。またクリーニング装置２５における排トナータンク
の容量も同様に、上記期間内に生じる排トナーが収納さ
れ得るようになっている。The lifespan of the photosensitive drum 21 and the charging device 22 in the process unit 20 is approximately equal to the period required to consume the amount of toner stored in the developing device 23. Similarly, the capacity of the waste toner tank in the cleaning device 25 is such that it can accommodate the waste toner generated within the above period.
ハウジング２６の下部に形成された上記転写室２４の下
面には、転写装置挿入用開口２４ａが形成されている。A transfer device insertion opening 24a is formed on the lower surface of the transfer chamber 24 formed in the lower part of the housing 26.
該開口２４ａは、転写室２４内とハウジング２６の外部
とを連通ずる。該開口２４ａは、後述の転写装置１８が
挿入され得る大きさとなっている。該開口２４ａは９例
えば、２枚のシール部材２４ｂ、２４ｂにて開放、およ
び閉塞され得る。各シール部材２４ｂおよび２４ｂの基
端部は、開口２４ａの相対向する周縁部に、それぞれ片
支持状態で固着されている。The opening 24a communicates the inside of the transfer chamber 24 with the outside of the housing 26. The opening 24a has a size that allows a transfer device 18, which will be described later, to be inserted therein. The opening 24a can be opened and closed by, for example, two seal members 24b, 24b. The proximal end portions of each of the seal members 24b and 24b are fixed to opposing peripheral edges of the opening 24a in a single supported state.
各シール部材２４ｂおよび２４ｂの先端部は、開口２４
ａの中央部にて重なり合っている。該シール部材２４ｂ
としては、遮光性および可撓性を有する材料１例えばプ
ラスチックフィルム等が用いられる。The tip of each seal member 24b and 24b is connected to the opening 24.
They overlap at the center of a. The seal member 24b
For example, a material 1 having light-shielding properties and flexibility, such as a plastic film, is used.
枢軸１９を中心に回動する複写機本体１０の上部半体１
６には、既述のように、プロセスユニット２０が装着さ
れ得る。該上部半休１６の上部には、スライド式の原稿
台１１が配設されている。該原稿台１１は。Upper half 1 of the copying machine main body 10 rotating around a pivot 19
6, the process unit 20 can be attached to it as described above. A sliding document table 11 is disposed above the upper half-rest 16. The document table 11 is.
装着される感光体ドラム２１の軸心とは直交する方向へ
摺動し得る。原稿台１１の下方には、光学系■２が配設
されている。該光学系１２は、原稿台１１上に載置され
た原稿の像を、原稿台１１の移動に伴って。It can slide in a direction perpendicular to the axis of the photoreceptor drum 21 mounted thereon. An optical system (2) is provided below the document table 11. The optical system 12 images an image of a document placed on the document table 11 as the document table 11 moves.
プロセスユニット２０における感光体ドラム２１表面に
、ハウジング２６のスリット２６ｃを通して露光する。The surface of the photosensitive drum 21 in the process unit 20 is exposed through the slit 26c of the housing 26.
複写機本体１０の下部半体１７の感光体ドラム２１に対
向する位置には、転写装置１８が取付けられている。該
転写装置１８は、複写機本体１０の上部半体１６と下部
半体１７とを連結した場合に、プロセスユニット２０に
おける転写室２４内に、開口２４ａのシール部材２４ｂ
および２４ｂを押し開きつつ侵入し、各シール部材２４
ｂおよび２４ｂは、転写装置１８の側面に当接した状態
となる。それゆえ、転写装置１８と開口２４ａとの間隙
は各シール部材２４ｂにて閉塞され。A transfer device 18 is attached to the lower half 17 of the copying machine main body 10 at a position facing the photosensitive drum 21. The transfer device 18 includes a seal member 24b of the opening 24a in the transfer chamber 24 of the process unit 20 when the upper half 16 and lower half 17 of the copying machine main body 10 are connected.
and 24b, and enter each sealing member 24b while pushing open.
b and 24b are in contact with the side surface of the transfer device 18. Therefore, the gap between the transfer device 18 and the opening 24a is closed by each seal member 24b.
開口２４ａから外部の塵埃などが転写室２４内に侵入す
るおそれはない。There is no possibility that external dust or the like will enter the transfer chamber 24 through the opening 24a.
複写機本体１０の上部半体１６と下部半体１７とは。What are the upper half 16 and lower half 17 of the copying machine main body 10?
記録紙の搬送経路の上流部１３ａと下流部１３ｂとによ
り分離される。複写機本体ＩＯの上部半休１６と下部半
体１７とを連結した場合に、これら搬送経路１３ａおよ
びＬ３ｂは、それぞれ、プロセスユニット２０のハウジ
ング２６の搬入口２６ａおよび搬出口２６ｂに連通ずる
。その結果、記録紙搬送経路の上流部１３ａ。The recording paper is separated by an upstream section 13a and a downstream section 13b of the conveyance path. When the upper half 16 and lower half 17 of the copying machine main body IO are connected, these transport paths 13a and L3b communicate with the loading inlet 26a and the unloading outlet 26b of the housing 26 of the process unit 20, respectively. As a result, the upstream portion 13a of the recording paper conveyance path.
記録紙搬送路２７および記録紙搬送経路の下流部１３ｂ
が連通ずる。それゆえ、？Ｊ［写機本体１０のペーパー
ホルダー１４内の記録紙は、搬送経路１３ａから転写室
２４の記録紙搬送路２７を通って搬送経路の下流部１３
ｂを経たのち、複写機本体１０のトレイ１５上へ排出さ
れうる。この間にハウジング２６の転写室２４にてトナ
ー像が記録紙上に転写される。この転写されたトナー像
は、＊送径路１３ｂに設けられた定着装置１３ｃにより
記録紙上に定着される。Recording paper conveyance path 27 and downstream section 13b of the recording paper conveyance path
is connected. therefore,? J [The recording paper in the paper holder 14 of the copying machine body 10 passes from the conveyance path 13a through the recording paper conveyance path 27 of the transfer chamber 24 to the downstream section 13 of the conveyance path.
After passing through step b, it can be discharged onto the tray 15 of the copying machine main body 10. During this time, the toner image is transferred onto the recording paper in the transfer chamber 24 of the housing 26. This transferred toner image is fixed onto the recording paper by a fixing device 13c provided in the feeding path 13b.
プロセスユニット２０の複写機本体１０への装着は。How to attach the process unit 20 to the copying machine main body 10.
以下のようにして行われる。まず、複写機本体１０の上
部半休１６を上方へ回動させ、下部半体１７から分離す
る。この状態でプロセスユニット２０を上部半体１６に
装着する。次いで、この上部半体１６を下方へ回動させ
、下部半体１７に連結する。この場合。This is done as follows. First, the upper half 16 of the copying machine main body 10 is rotated upward and separated from the lower half 17. In this state, the process unit 20 is attached to the upper half body 16. Next, this upper half 16 is rotated downward and connected to the lower half 17. in this case.
プロセスユニット２０の転写室２４を閉塞するシール部
材２４ｂ、２４ｂは、複写機本体１０の下部半体１７に
取りつけられた転写装置１８にて押圧され、開口２４ａ
を開放する。該転写装置１８は各シール部材２４ｂ。The sealing members 24b, 24b that close the transfer chamber 24 of the process unit 20 are pressed by the transfer device 18 attached to the lower half 17 of the copying machine main body 10, and the opening 24a is pressed.
to open. The transfer device 18 includes each seal member 24b.
２４ｂに摺接しつつ転写室２４内に挿入される。そして
、上部半体１６と下部半体１７が連結されると、転写装
置１８は、記録紙搬送路２７をはさんで感光体ドラム２
１の所定位置に対向する。It is inserted into the transfer chamber 24 while slidingly contacting the transfer chamber 24b. Then, when the upper half 16 and the lower half 17 are connected, the transfer device 18 transfers the photosensitive drum 2 across the recording paper conveyance path 27.
1, facing a predetermined position.
この複写機の複写動作は、従来の電子写真複写機の複写
動作と同様であり２次のとおりである。The copying operation of this copying machine is similar to that of a conventional electrophotographic copying machine, and is as follows.
プロセスユニット２０における帯電装置２２にて感光体
ドラム２１表面は一様に帯電される。次いで、原稿台１
１上に載置された原稿の像が光学系１２により露光され
、感光体ドラム２１の表面上に静電潜像が形成される。The surface of the photosensitive drum 21 is uniformly charged by a charging device 22 in the process unit 20 . Next, document table 1
The image of the original placed on the photoreceptor drum 21 is exposed by the optical system 12, and an electrostatic latent image is formed on the surface of the photoreceptor drum 21.
該静電潜像は、現像装置２３によりトナー現像される。The electrostatic latent image is developed with toner by the developing device 23.
一方、記録紙は搬送経路の上流部１３ａを通って、プロ
セスユニッ）２０の記録紙搬送路２７内に導入される。On the other hand, the recording paper passes through the upstream portion 13a of the conveyance path and is introduced into the recording paper conveyance path 27 of the process unit 20.
このとき、記録紙は、導入板２８に案内されて、感光体
ドラム２１に接触される。感光体ドラム２１上のトナー
像は、転写装置２４にて記録紙上に転写される。トナー
像の転写された記録紙は、導出板２９に案内されて搬出
口２６ｂがらハウジング２６外へ搬出される。そして、
！＠送送路路下流部１３ｂを通って、定着装置１３ｃに
送られ。At this time, the recording paper is guided by the introduction plate 28 and brought into contact with the photosensitive drum 21. The toner image on the photosensitive drum 21 is transferred onto recording paper by a transfer device 24. The recording paper on which the toner image has been transferred is guided by the guide plate 29 and is carried out of the housing 26 through the outlet 26b. and,
! @The feed path passes through the downstream portion 13b and is sent to the fixing device 13c.
ここでトナー像は記録紙に定着される。トナー像の定着
された記録紙は、トレイ１５上に排出される。Here, the toner image is fixed on the recording paper. The recording paper with the toner image fixed thereon is discharged onto the tray 15.
感光体ドラム２１は、トナー像が記録紙に転写されると
、クリーニング装置２５にてその表面の残留トナーが除
去される。When the toner image is transferred to the recording paper, the photosensitive drum 21 is cleaned by a cleaning device 25 to remove residual toner from the surface thereof.
プロセスユニット２０における感光体ドラム２１と帯電
装置２２との寿命は略等しく定められており。The life spans of the photosensitive drum 21 and the charging device 22 in the process unit 20 are set to be approximately equal.
現像装置２３内のトナー量およびクリーニング装置２５
内の排トナー容量も、上記寿命に対応した量とされてい
る。そのため、感光体ドラム２１等が耐用限度になると
、複写機本体１０の上部半休１６は上方へ回動され、プ
ロセスユニット２０全体が、感光体ドラム２１の軸方向
にスライドされて、該上部半休１６から離脱される。そ
して、新たなプロセスユニット２０が該上部半休１６に
装着される。上部半体１６より離脱されたプロセスユニ
ット２０は、シール部材２４ｂ、２４ｂの先端部同士が
自身の可撓性により初期の重ね合った状態となり、ハウ
ジング２６の開口２４ａを閉塞する。Amount of toner in the developing device 23 and cleaning device 25
The amount of discharged toner inside is also set to correspond to the above-mentioned lifespan. Therefore, when the photoreceptor drum 21 and the like reach their service life limit, the upper half-hole 16 of the copying machine main body 10 is rotated upward, and the entire process unit 20 is slid in the axial direction of the photoreceptor drum 21, and the upper half-hole 16 is rotated upward. will be separated from. Then, a new process unit 20 is attached to the upper half-housing 16. When the process unit 20 is separated from the upper half body 16, the tip ends of the seal members 24b and 24b are in an initial overlapping state due to their own flexibility, and the opening 24a of the housing 26 is closed.
プロセスユニット２０は、複写機本体ＩＯが上部半休１
６と下部半体１７とに分離できないものにも適用できる
。上部半休と下部半休に分離できない複写機本体には、
プロセスユニットは、複写機本体における記録紙の搬送
経路と直交する方向にスライドされて複写機本体に着脱
される。第３図〜第５図は、このような複写機本体に着
脱可能なプロセスユニット２０゛ を示している。富亥
プロセスユニット２０゛ は、ハウジング２６°内の
感光体ドラム２１′の下方域に形成された転写室２４゛
の、スライドされる方向の一方の側面に転写装置挿入
用の開口２４８゛が開設されている。該開口２４ａ゛に
は、前述の実施例と同様の材質のシール部材２４ｂ”お
よび２４ｂ。In the process unit 20, the copying machine main body IO is
6 and the lower half 17 cannot be separated. Copying machines that cannot be separated into upper and lower halves,
The process unit is attached to and removed from the copying machine main body by sliding in a direction perpendicular to the conveyance path of recording paper in the copying machine main body. FIGS. 3 to 5 show a process unit 20' that can be attached to and detached from such a copying machine main body. The Fuji process unit 20' has an opening 248' for inserting the transfer device on one side of the transfer chamber 24' formed in the lower area of the photoreceptor drum 21' within the housing 26' in the sliding direction. has been done. The opening 24a' is provided with seal members 24b'' and 24b made of the same material as in the previous embodiment.
が該開口２４ａの相対向する周縁部にそれぞれ柱支持さ
れている。各シール部材２４ｂ゛ および２４ｂ。are respectively supported by pillars at opposing peripheral edges of the opening 24a. Each seal member 24b' and 24b.
の先端部は、開口２４ａ゛の中央にて重なり合い。The tips of the two overlap at the center of the opening 24a.
該開口２４８″を閉塞する。該開口２４ａ゛ と対向す
る転写室２４゛ 内面には、転写装置１８′の係止部１
８ｂ。The opening 248'' is closed. The locking portion 1 of the transfer device 18' is provided on the inner surface of the transfer chamber 24'' facing the opening 24a''.
8b.
（後述）に係合しうる係合部２４ｄ゛が設けられている
。An engaging portion 24d' that can be engaged with (described later) is provided.
転写装置１８゛ は、複写機本体１０°に支持部材１８
ａ。The transfer device 18' has a support member 18 at 10° of the copying machine main body.
a.
により固定されている。該支持部材１８ａ゛は転写装置
１８”の長手方向の一端部を柱支持する。転写装置１８
°の長手方向の他端部には係止部１８ｂ′が形成されて
いる。該係止部１８ｂ°は、転写室２４゛内の係合部２
４ｄ”に係合し得る。両者の保合により、プロセスユニ
・ノド２０゛ は複写機本体１０’ に対し所定位置に
固定されることになる。その他の構成は２前記実施例と
同様であるので説明を省略する。Fixed by The support member 18a'' supports one end of the transfer device 18'' in the longitudinal direction.The transfer device 18
A locking portion 18b' is formed at the other end in the longitudinal direction. The locking portion 18b is connected to the engaging portion 2 in the transfer chamber 24.
4d". By the engagement of both, the process unit throat 20' is fixed in a predetermined position with respect to the copying machine main body 10'. The other configurations are the same as in the second embodiment. Therefore, the explanation will be omitted.
このようなプロセスユニット２０゛ の複写機本体への
装着は１次のように行われる。ハウジング２６゛の開口
２４ａ°から、転写装置１８°の係止部１８ｂ゛が挿入
されるように、プロセスユニット２０°全体を複写機本
体１０′内へ移動させる。これにより。The process unit 20' is attached to the main body of the copying machine in the following manner. The entire process unit 20° is moved into the copying machine main body 10' so that the locking portion 18b of the transfer device 18° is inserted through the opening 24a° of the housing 26'. Due to this.
開口部２４ａ゛を覆うシール部材２４ｂ°は係止部１８
ｂ゛にて押し開けられ、転写装置１８゛ は転写室２４
°内に挿入される。このとき、シール部材２４ｂ゛およ
び２４ｂ”は、それ自身の可撓性により転写装置１８゜
の外面に接触した状態となる。そして、転写装置ｌ８°
の係止部１８ａ゛が転写室２４°内面の係合部２４ｂ′
に係合することにより、該プロセスユニット２０゜は、
複写機本体１０’ に対して所定位置に装着されること
になる。The sealing member 24b° that covers the opening 24a′ is the locking portion 18
The transfer device 18 is pushed open at b', and the transfer chamber 24 is
inserted within °. At this time, the sealing members 24b'' and 24b'' come into contact with the outer surface of the transfer device 18° due to their own flexibility.
The locking part 18a' is the engaging part 24b' on the inner surface of the transfer chamber 24°.
By engaging with the process unit 20°, the process unit 20°
It is mounted at a predetermined position on the main body 10' of the copying machine.
なお、このようなプロセスユニット２０′の転写室２４
゛ 内に、転写装置１８°を所定位置にまで案内するガ
イド部材を設ける構成としてもよい。Note that the transfer chamber 24 of such a process unit 20'
A guide member for guiding the transfer device 18° to a predetermined position may be provided inside.
（発明の効果）
本発明の複写機は、このように、プロセスユニットを複
写機本体より離脱させた場合にも、感光体は、記録紙搬
送路および転写室という空間、さらにはシール部材に覆
われるための、感光体表面に手等が触れるおそれがなく
、トナー等も周囲に飛散するおそれもない。転写装置は
プロセスユニットには固定されていないため、転写装置
のみの取換えが容易に行える。遮光性を有するシール部
材を用いれば、プロセスユニットを複写機本体から離脱
させた場合にも、感光体は露光されない。(Effects of the Invention) As described above, in the copying machine of the present invention, even when the process unit is removed from the copying machine main body, the photoreceptor remains in the space of the recording paper transport path and the transfer chamber, and is further covered by the seal member. There is no risk of your hands or the like touching the surface of the photoreceptor due to the surface of the photoreceptor, and there is no risk of toner or the like scattering around. Since the transfer device is not fixed to the process unit, only the transfer device can be easily replaced. If a sealing member having light blocking properties is used, the photoreceptor will not be exposed to light even when the process unit is removed from the copying machine main body.
可撓性を有するシール部材では、プロセスユニットを複
写機本体に装着した場合に、該シール部材と転写装置が
当接した状態とすることができ、複写機本体内へのトナ
ーの飛散を防止できる。With a flexible sealing member, when the process unit is installed in the copying machine main body, the sealing member and the transfer device can be brought into contact with each other, and it is possible to prevent toner from scattering into the copying machine main body. .
４、文 のｐ単な；Ｉ
第１図は本発明の複写機の縦断面図、第２図はその複写
機本体の上部半休を上方へ回動させた状態の縦断面図、
第３図は本発明の他の実施例におけるプロセスユニット
の正面図、第４図はその断面図、第５図は第４図のＶ−
Ｖ線における断面図である。4. Sentence p simple; I Fig. 1 is a longitudinal cross-sectional view of the copying machine of the present invention, Fig. 2 is a longitudinal cross-sectional view of the main body of the copying machine with the upper half turned upward;
3 is a front view of a process unit in another embodiment of the present invention, FIG. 4 is a sectional view thereof, and FIG. 5 is a V--
It is a sectional view taken along the V line.
ｉｏ、 ｉｏｏ・・・複写機本体、 １８．１８’ ・
・・転写装置。io, ioo...Copier main body, 18.18' ・
...Transfer device.
２０、２０’ ・・・プロセスユニット２１．２１’
・・・感光体ドラム、２２・・・帯電装置、２３・・・
現像装置、 ２４．２４’・・・転写室、２４ａ、２４
ａ’−開口、２４ｂ、２４ｂ’ −・・シール部材、２
５・・・クリーニング装！、 ２６．２６’ ・・・ハ
ウジング、２７・・・記録紙搬送路。20, 20'...process unit 21.21'
...Photosensitive drum, 22...Charging device, 23...
Developing device, 24.24'...Transfer chamber, 24a, 24
a'-opening, 24b, 24b'--sealing member, 2
5...Cleaning equipment! , 26.26'...housing, 27...recording paper conveyance path.
以上that's all
Claims (1)
に着脱可能なプロセスユニットとを有し、該プロセスユ
ニットは、 そのハウジング内に一体的に固定された感光体、帯電装
置、現像装置およびクリーニング装置と、ハウジング内
の感光体下方域に形成された転写室と、 該感光体と該転写室との間を通ってハウジングを貫通す
る記録紙搬送路と、 ハウジングに設けられ、該転写装置を該転写室内に挿入
するための転写装置挿入用開口と、該開口を開閉し得る
シール部材とを備えてなる、複写機。 ２、前記シール部材は、可撓性を有し、前記プロセスユ
ニットの複写機本体への装着時に前記転写装置に押圧さ
れて前記開口を開放する特許請求の範囲第１項に記載の
複写機。 ３、前記シール部材は遮光性を有する特許請求の範囲第
１項に記載の複写機。[Claims] 1. It has a copying machine body equipped with a transfer device and a process unit that is removably attached to the copying machine body, and the process unit includes a photoconductor that is integrally fixed in the housing. , a charging device, a developing device, and a cleaning device; a transfer chamber formed in an area below the photoconductor in the housing; a recording paper transport path passing through the housing and passing between the photoconductor and the transfer chamber; 1. A copying machine, comprising: a transfer device insertion opening for inserting the transfer device into the transfer chamber; and a seal member capable of opening and closing the opening. 2. The copying machine according to claim 1, wherein the sealing member has flexibility and is pressed by the transfer device to open the opening when the process unit is attached to the copying machine main body. 3. The copying machine according to claim 1, wherein the sealing member has a light blocking property.
Priority Applications (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61045052A JPS62201466A (en) | 1986-02-28 | 1986-02-28 | Copying machine |
| KR1019870001664A KR900009010B1 (en) | 1986-02-28 | 1987-02-26 | A copier |
| US07/019,721 US4803510A (en) | 1986-02-28 | 1987-02-27 | Copying machine having removable process unit in a housing |
| DE8787301819T DE3772081D1 (en) | 1986-02-28 | 1987-03-02 | ELECTROPHOTOGRAPHIC COPIER. |
| EP87301819A EP0240168B1 (en) | 1986-02-28 | 1987-03-02 | Electrophotographic copying machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61045052A JPS62201466A (en) | 1986-02-28 | 1986-02-28 | Copying machine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62201466A true JPS62201466A (en) | 1987-09-05 |
| JPH0560589B2 JPH0560589B2 (en) | 1993-09-02 |
Family
ID=12708582
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61045052A Granted JPS62201466A (en) | 1986-02-28 | 1986-02-28 | Copying machine |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62201466A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398055A (en) * | 1989-09-12 | 1991-04-23 | Fujitsu Ltd | Image forming device |
| JPH03257464A (en) * | 1989-12-15 | 1991-11-15 | Canon Inc | Attachable/detechable process cartridge to/from image forming device |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931988A (en) * | 1982-08-17 | 1984-02-21 | Canon Inc | Light shielding device of exposure part of process unit |
| JPS6079368A (en) * | 1983-10-06 | 1985-05-07 | Konishiroku Photo Ind Co Ltd | Image recorder |
-
1986
- 1986-02-28 JP JP61045052A patent/JPS62201466A/en active Granted
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5931988A (en) * | 1982-08-17 | 1984-02-21 | Canon Inc | Light shielding device of exposure part of process unit |
| JPS6079368A (en) * | 1983-10-06 | 1985-05-07 | Konishiroku Photo Ind Co Ltd | Image recorder |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0398055A (en) * | 1989-09-12 | 1991-04-23 | Fujitsu Ltd | Image forming device |
| JPH03257464A (en) * | 1989-12-15 | 1991-11-15 | Canon Inc | Attachable/detechable process cartridge to/from image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0560589B2 (en) | 1993-09-02 |
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