JPS6021070A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPS6021070A JPS6021070A JP58127883A JP12788383A JPS6021070A JP S6021070 A JPS6021070 A JP S6021070A JP 58127883 A JP58127883 A JP 58127883A JP 12788383 A JP12788383 A JP 12788383A JP S6021070 A JPS6021070 A JP S6021070A
- Authority
- JP
- Japan
- Prior art keywords
- main body
- developing device
- cover
- copying machine
- developing
- 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
Classifications
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
- G03G15/0898—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894 for preventing toner scattering during operation, e.g. seals
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は電子複写機における現像装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a developing device in an electronic copying machine.
電子複写機では、感光ドラムを用い、帯電、露光、現像
、転写および定着の各工程をそれぞれ経て複写画像を作
成している。In an electronic copying machine, a photosensitive drum is used to create a copy image through charging, exposure, development, transfer, and fixing steps.
第１図は従来のこのような電子複写機の一例を表わした
ものである。FIG. 1 shows an example of such a conventional electronic copying machine.
この電子複写機では、感光ドラム１が矢印六方向に回転
すると、まずこの表面が帯電器２で帯電される。感光ド
ラム１の帯電された表面が所定の位置を通過するとき、
図示しない露光装置によって矢印Ｂで示すように画像の
露光が行われ、感光ドラム１の表面に静電潜像が形成さ
れる。静電潜像は現像装置３の現像ロール４と対向する
箇所において磁気ブラシ現像法によって現像され、トナ
ー像が形成される。In this electronic copying machine, when the photosensitive drum 1 rotates in the six directions of arrows, the surface of the photosensitive drum 1 is first charged by the charger 2. When the charged surface of the photosensitive drum 1 passes a predetermined position,
An exposure device (not shown) exposes an image as indicated by an arrow B, and an electrostatic latent image is formed on the surface of the photosensitive drum 1. The electrostatic latent image is developed by magnetic brush development at a location facing the developing roll 4 of the developing device 3, and a toner image is formed.
一方図示しない用紙カセットから送り出された用紙５は
、同じく図示しない搬送装置によって矢印Ｃで示すよう
に搬送され、感光ドラムｌに形成されたトナー像と重ね
合わされる。この重ね合わされた用紙５に、転写器６の
作用により、感光ドラム１のトナー像が転写される。転
写後の用紙５は、除電器７の作用により感光ドラムｌか
ら剥離され、１般送装置８によって図示しない定着装置
に送られて定着された後、同じく図示しない排出トレイ
に排出される。感光ドラム１の表面に残留するトナー粒
子はクリーニング装置９でクリーニングされる。On the other hand, the paper 5 sent out from a paper cassette (not shown) is transported as indicated by arrow C by a transport device (also not shown), and is superimposed on the toner image formed on the photosensitive drum l. The toner image on the photosensitive drum 1 is transferred onto the stacked sheets 5 by the action of the transfer device 6. The paper 5 after the transfer is peeled off from the photosensitive drum 1 by the action of the static eliminator 7, sent to a fixing device (not shown) by the first general feeding device 8 and fixed thereon, and then discharged to a discharge tray (also not shown). Toner particles remaining on the surface of the photosensitive drum 1 are cleaned by a cleaning device 9.
ところでこのような電子複写機では、現像装置３を電子
複写機本体（図示せず）に対し着脱自在とし、そのメン
テナンスを容易に行うことができるようになっている。Incidentally, in such an electronic copying machine, the developing device 3 is detachably attached to the main body of the electronic copying machine (not shown), so that its maintenance can be easily performed.
現像装置３の着脱方法には、その本体１０の前後面に設
けられたピン（図示せず）を電子複写機本体に設けられ
たガイドレール（図示せず）に案内させて、感光ドラム
１の水平な径方向つまり矢印り、Ｅ方向に移動させる方
法がある。ところがこのような現像装置３では、現像ロ
ール４の感光ドラム１と対向する部分が露出されている
ので、取り外゛したとき手や衣服が現像ロール４に触れ
、汚れてしまうことがあった。また現像装置３を取り外
したとき、トナー粒子がこぼれ、床等を汚してしまうこ
とがあった。特に取り外した現像装置３を誤って傾けた
りした場合には、トナー粒子が多量にこぼれてしまうこ
とがあった。The method for attaching and detaching the developing device 3 is to guide pins (not shown) provided on the front and rear surfaces of the main body 10 to guide rails (not shown) provided in the main body of the electronic copying machine. There is a method of moving it in a horizontal radial direction, that is, in the arrow E direction. However, in such a developing device 3, since the portion of the developing roll 4 facing the photosensitive drum 1 is exposed, when the developing device 3 is removed, hands or clothes may touch the developing roll 4 and get dirty. Furthermore, when the developing device 3 is removed, toner particles may spill out and stain the floor or the like. In particular, if the removed developing device 3 is tilted by mistake, a large amount of toner particles may spill out.
本発明はこのような事情に鑑みてなされたもので、電子
複写機本体から取り外すとき、現像ロールの露出部分を
自動的に被うことのできる現像装置を提供することを目
的とする。The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a developing device that can automatically cover the exposed portion of the developing roll when removed from the main body of an electronic copying machine.
本発明では、電子複写機本体に対しこの内部に設けられ
た感光ドラムの水平な径方向に着脱自在とされた現像装
置本体と、この現像装置本体内に設けられかつ感光ドラ
ムと対向する部分を露出された現像ロールと、現像装置
本体に現像ロールの露出部分を開閉しうるように設けら
れたカバーと、このカバーを閉塞方向に付勢する付勢部
材と、電子複写機本体およびカバーに設けられ現像装置
本体を電子複写機本体に装着するときこれに伴いカバー
を付勢部材の力に抗して開放させる開放手段とを備え、
現像装置本体を電子複写機本体から取り外すときカバー
で現像ロールの露出部分を被うようにしたものである。The present invention includes a developing device main body that is detachable from the electronic copying machine main body in the horizontal radial direction of the photosensitive drum provided therein, and a portion provided within the developing device main body that faces the photosensitive drum. An exposed developing roll, a cover provided on the developing device body so as to open and close the exposed portion of the developing roll, a biasing member biasing the cover in a closing direction, and a biasing member provided on the electronic copying machine body and the cover. and opening means for opening the cover against the force of the biasing member when the developing device main body is mounted on the electronic copying machine main body,
When the developing device main body is removed from the electronic copying machine main body, the exposed portion of the developing roll is covered with a cover.
以下実施例につき本発明の詳細な説明する。。 The present invention will be described in detail below with reference to Examples. .
第２図〜第４図は本発明の一実施例における現像装置の
主要部分を表わしたものである。2 to 4 show the main parts of a developing device in an embodiment of the present invention.
この現像装置の本体２１は、図示しない電子複写機本体
に対して感光ドラム２２の水平な径方向つまり矢印Ｆ、
Ｇ方向に着脱自在に装着されるようになっている。現像
装置本体２１内の所定の箇所には現像ロール２３が軸２
４を介して回転自在に設けられている。現像ロール２３
の感光ドラム２２と対向する部分は、現像装置本体２１
に設けられた開口２５を介して露出されている。現像装
置本体２１の開口２５の下端部外面には係止片２６が全
長にわたって設けられている。現像装置本体２１の現像
ロール２３が配置されている部分は、円筒体の一部から
なる形状となっている。The main body 21 of this developing device is arranged in the horizontal radial direction of the photosensitive drum 22 with respect to the main body of the electronic copying machine (not shown), that is, in the direction indicated by the arrow F.
It is designed to be detachably attached in the G direction. A developing roll 23 is attached to the shaft 2 at a predetermined location within the developing device main body 21.
4 and is rotatably provided. Developing roll 23
The portion facing the photosensitive drum 22 is the developing device main body 21.
It is exposed through an opening 25 provided in the. A locking piece 26 is provided on the outer surface of the lower end of the opening 25 of the developing device body 21 over the entire length. The portion of the developing device main body 21 where the developing roll 23 is disposed has a shape that is a part of a cylindrical body.
現像装置本体２１の外部の所定の箇所には、開口２５を
開閉するためのカバー３１が設けられている。カバー３
１は、断面円弧状のカバ一本体３２と、このカバ一本体
３２の両端にそれぞれ設けられた支持板３３．３４と、
カバ一本体３２の後端部内面に全長にわたって設けられ
た係止片３５とからなっている。支持板３３．３４の基
端部は現像ロール２３の軸２４に回動自在に取り付けら
れている。現像装置本体２１と一方の支持板３３の各所
定の箇所にはピン３６．３７がそれぞれ設けられている
。これらのピン３６．３７の間にはコイルバネ３８が設
けられている。カバー３１はコイルバネ３８の力により
常に時計方向に付勢されている。一方の支持板３３の所
定の箇所にはほぼ１／４円弧のギヤ３９が設けられてい
る。A cover 31 for opening and closing the opening 25 is provided at a predetermined location on the outside of the developing device main body 21 . cover 3
1 includes a cover main body 32 having an arcuate cross section, and support plates 33 and 34 provided at both ends of the cover main body 32, respectively;
It consists of a locking piece 35 provided on the inner surface of the rear end portion of the cover main body 32 over the entire length. The base end portions of the support plates 33 and 34 are rotatably attached to the shaft 24 of the developing roll 23. Pins 36 and 37 are provided at predetermined locations on the developing device main body 21 and one support plate 33, respectively. A coil spring 38 is provided between these pins 36,37. The cover 31 is always urged clockwise by the force of the coil spring 38. A gear 39 having a substantially 1/4 arc shape is provided at a predetermined location on one of the support plates 33 .
ギヤ３９と対応して電子複写機本体内の所定の箇所には
ラック４０が設は人６れている。A rack 40 is provided at a predetermined location within the main body of the electronic copying machine in correspondence with the gear 39.
今、この現像装置の本体２１を電子複写機本体から取り
外したとする。この状態では、第４図に示すように、カ
バー３１がコイルバネ３８の力により時計方向に付勢さ
れ、その係止片３５が現像装置本体２１の係止片２６と
当接されることとなる。すなわちカバー３１は現像装置
本体２１の開口２５を完全に閉塞し、現像ロール２３を
完全に被うこととなる。Now, assume that the main body 21 of this developing device is removed from the main body of the electronic copying machine. In this state, as shown in FIG. 4, the cover 31 is biased clockwise by the force of the coil spring 38, and its locking piece 35 comes into contact with the locking piece 26 of the developing device main body 21. . That is, the cover 31 completely closes the opening 25 of the developing device main body 21 and completely covers the developing roll 23.
この現像装置の本体２１を電子複写機本体に装着する場
合には、まず現像装置本体２１をその開口２５を先にし
て電子複写機本体内に適宜に挿入し、ギヤ３９の一端を
ラック４０の一端に噛合させる。この後現像装置本体２
１を矢印Ｆ方向に更に挿入すると、ラック４０との噛合
によりギヤ３９が反時計方向に回動され、これに伴いカ
バー３１がコイルバネ３８の力に抗して同方向に回動さ
れる。すなわち現像装置本体２１を電子複写機本体内に
挿入するにつれ、カバー３１が自動的に除々に開放され
る。現像装置本体２１を電子複写機本体内の所期の位置
に装着すると、第３図に示すように、現像装置本体２１
の開口２５は完全に開放され、現像ロール２３が所期の
通り露出されることとなる。この状態では、ギヤ３９が
ラック４０と噛合しているので、カバー３１は開放位置
に保持されることとなる。現像装置本体２１を電子複写
機本体内の所期の位置に装着すると、現像ロール２３の
軸２４は図示しない伝達系を介して同じく図示しないモ
ーフに連結される。この伝達系は通常電子複写機本体の
背部に配置されている。When installing the developing device main body 21 into the electronic copying machine main body, first insert the developing device main body 21 into the electronic copying machine main body with its opening 25 first, and then connect one end of the gear 39 to the rack 40. Engage one end. After this, the developing device main body 2
1 is further inserted in the direction of arrow F, the gear 39 is rotated counterclockwise by engagement with the rack 40, and the cover 31 is accordingly rotated in the same direction against the force of the coil spring 38. That is, as the developing device main body 21 is inserted into the electronic copying machine main body, the cover 31 is automatically and gradually opened. When the developing device main body 21 is installed in the desired position in the electronic copying machine main body, the developing device main body 21 is attached as shown in FIG.
The opening 25 is completely opened, and the developing roll 23 is exposed as expected. In this state, the gear 39 is engaged with the rack 40, so the cover 31 is held in the open position. When the developing device body 21 is installed at a desired position within the electronic copying machine body, the shaft 24 of the developing roll 23 is connected to a morph (also not shown) via a transmission system (not shown). This transmission system is usually located at the back of the main body of the electronic copying machine.
このためラック４０は電子複写機本体の手前側に設ける
方が望ましい。For this reason, it is preferable to provide the rack 40 on the front side of the main body of the electronic copying machine.
一方、この現像装置の本体２１を電子複写機本体から取
り外す場合には、現像装置本体２１を矢印Ｇ方向に引き
出せばよい。このときラック４０との噛合によりギヤ３
９が時計方向に回動され、これに伴いカバー３１が同方
向に回動される。すなわち現像装置本体２１を電子複写
機本体から引き出すにつれ、カバー３１が自動的に除々
に閉塞される。現像装置本体２１を電子複写機本体から
取り外すと、上述したように、カバー３１は現像装置本
体２１の開口２５を完全に閉塞し、現像ロール２３を完
全に被うこととなる。On the other hand, in order to remove the developing device main body 21 from the electronic copying machine main body, the developing device main body 21 can be pulled out in the direction of arrow G. At this time, due to the meshing with the rack 40, the gear 3
9 is rotated clockwise, and the cover 31 is accordingly rotated in the same direction. That is, as the developing device main body 21 is pulled out from the electronic copying machine main body, the cover 31 is automatically gradually closed. When the developing device main body 21 is removed from the electronic copying machine main body, the cover 31 completely closes the opening 25 of the developing device main body 21 and completely covers the developing roll 23, as described above.
以上説明したように本発明によれば、電子複写機本体か
ら取り外したとき、現像ロールの露出部分はカバーで被
われているので、トナー粒子による汚れをなくすことが
でき、また取り外した状態で塵埃等の異物が混入するの
を防止することができる。また現像装置本体の着脱に伴
いカッく−を自動的に開閉することができるので、特別
の作業を行う必要がない。As explained above, according to the present invention, when the developing roll is removed from the main body of the electronic copying machine, the exposed part of the developing roll is covered with a cover, so it is possible to eliminate dirt caused by toner particles. It is possible to prevent foreign substances such as Further, since the cup can be automatically opened and closed as the developing device main body is attached and detached, there is no need to perform any special work.
第１図は従来の電子複写機の一例を示す概略正面図、第
２図は本発明の一実施例における現像装置の主要部分を
示す斜視図、第３図は同現像装置の正面図、第４図は同
現像装置の本体を電子複写機本体から取り外した状態を
示す縦断正面図である。
２１・・・・・・現像装置本体、
２２・・・・・・感光ドラム、
２３・・・・・・現像ロール、 ２５・・・・・・開口
、２６・・・・・・係止片、 ３１・・・・・・カバー
、３５・・・・・・係止片、 ３８・・・・・・コイル
ノくネ、３９・・・・・・ギヤ、 ４０・・・・・・う
、ツク。
出 願 人 富士ゼロ・Ｚクス株式会社代 理 人 弁
理士 山 内 梅 雄
第 ２ 図
第 ３ 図
第 ４ 図FIG. 1 is a schematic front view showing an example of a conventional electronic copying machine, FIG. 2 is a perspective view showing main parts of a developing device in an embodiment of the present invention, and FIG. 3 is a front view of the same developing device. FIG. 4 is a longitudinal sectional front view showing the main body of the developing device removed from the main body of the electronic copying machine. 21... Development device main body, 22... Photosensitive drum, 23... Development roll, 25... Opening, 26... Locking piece. , 31... Cover, 35... Locking piece, 38... Coil nook, 39... Gear, 40... U... Tsuku. Applicant Fuji Zero Z-X Co., Ltd. Representative Patent Attorney Umeo Yamauchi Figure 2 Figure 3 Figure 4
Claims (1)
の水平な径方向に着脱自在とされた現像装置本体と、こ
の現像装置本体内に設けられかつ感光ドラムと対向する
部分を露出された現像ロールと、現像装置本体に現像ロ
ールの露出部分を開閉しつるように設けられたカバーと
、このカバーを閉塞方向に付勢する付勢部材と、電子複
写機本体およびカバーに設けられ現像装置本体を電子複
写機本体に装着するときこれに伴いカバーを付勢部材の
力に抗して開放させる開放手段とを具備することを特徴
とする現像装置。A developing device main body that can be freely attached to and removed from the electronic copying machine main body in the horizontal radial direction of a photosensitive drum provided inside the main body, and a developing device that is provided inside the developing device main body and has a portion facing the photosensitive drum exposed. a roll, a cover provided on the developing device main body so as to open and close the exposed portion of the developing roll, a biasing member that urges the cover in the closing direction, and a developing device main body provided on the electronic copying machine main body and the cover. 1. A developing device comprising: opening means for opening a cover against the force of an urging member when the developing device is mounted on an electronic copying machine main body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58127883A JPS6021070A (en) | 1983-07-15 | 1983-07-15 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP58127883A JPS6021070A (en) | 1983-07-15 | 1983-07-15 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6021070A true JPS6021070A (en) | 1985-02-02 |
Family
ID=14971003
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP58127883A Pending JPS6021070A (en) | 1983-07-15 | 1983-07-15 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6021070A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067975A (en) * | 1983-09-22 | 1985-04-18 | Ricoh Co Ltd | Developing device |
| JPS60135968A (en) * | 1983-12-23 | 1985-07-19 | Sharp Corp | Copying machine |
| JPS61201274A (en) * | 1985-03-04 | 1986-09-05 | Canon Inc | Image forming device |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124734A (en) * | 1978-03-20 | 1979-09-27 | Ricoh Co Ltd | Magnetic brush developing device |
| JPS5647072A (en) * | 1979-09-27 | 1981-04-28 | Canon Inc | Developing device |
| JPS5825650A (en) * | 1981-08-07 | 1983-02-15 | Canon Inc | Image forming device |
| JPS592061A (en) * | 1982-06-28 | 1984-01-07 | Canon Inc | Developing device |
| JPS5934555A (en) * | 1982-08-23 | 1984-02-24 | Canon Inc | Picture forming device |
| JPS5972459A (en) * | 1982-10-19 | 1984-04-24 | Canon Inc | Developing device |
-
1983
- 1983-07-15 JP JP58127883A patent/JPS6021070A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS54124734A (en) * | 1978-03-20 | 1979-09-27 | Ricoh Co Ltd | Magnetic brush developing device |
| JPS5647072A (en) * | 1979-09-27 | 1981-04-28 | Canon Inc | Developing device |
| JPS5825650A (en) * | 1981-08-07 | 1983-02-15 | Canon Inc | Image forming device |
| JPS592061A (en) * | 1982-06-28 | 1984-01-07 | Canon Inc | Developing device |
| JPS5934555A (en) * | 1982-08-23 | 1984-02-24 | Canon Inc | Picture forming device |
| JPS5972459A (en) * | 1982-10-19 | 1984-04-24 | Canon Inc | Developing device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6067975A (en) * | 1983-09-22 | 1985-04-18 | Ricoh Co Ltd | Developing device |
| JPS60135968A (en) * | 1983-12-23 | 1985-07-19 | Sharp Corp | Copying machine |
| JPS61201274A (en) * | 1985-03-04 | 1986-09-05 | Canon Inc | Image forming device |
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