JPH0158511B2 - - Google Patents
Info
- Publication number
- JPH0158511B2 JPH0158511B2 JP55162547A JP16254780A JPH0158511B2 JP H0158511 B2 JPH0158511 B2 JP H0158511B2 JP 55162547 A JP55162547 A JP 55162547A JP 16254780 A JP16254780 A JP 16254780A JP H0158511 B2 JPH0158511 B2 JP H0158511B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- developing device
- opening
- forming apparatus
- image forming
- 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
Links
- 238000011084 recovery Methods 0.000 claims description 32
- 238000007599 discharging Methods 0.000 claims description 4
- 108091008695 photoreceptors Proteins 0.000 description 9
- 238000005192 partition Methods 0.000 description 7
- 230000007423 decrease Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000005086 pumping Methods 0.000 description 2
- 238000010186 staining Methods 0.000 description 2
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- -1 polyethylene Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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
- G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
- G03G15/0844—Arrangements for purging used developer from the developing unit
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Magnetic Brush Developing In Electrophotography (AREA)
Description
【発明の詳細な説明】
〔技術分野〕
本発明は、潜像担持体に形成された静電潜像を
可視像化する現像装置を備えた画像形成装置に関
する。DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to an image forming apparatus equipped with a developing device that visualizes an electrostatic latent image formed on a latent image carrier.
電子複写機や静電記録装置として構成される上
記形式の画像形成装置は従来より周知である。こ
の種の画像形成装置の現像装置において、トナー
とキヤリヤを有する現像剤を用いた場合、キヤリ
ヤが経時的に劣化すると現像剤の現像能力が低下
するため、現像装置内の現像剤を時々交換する必
要がある。
Image forming apparatuses of the above type configured as electronic copying machines or electrostatic recording apparatuses are well known. When a developer containing toner and a carrier is used in the developing device of this type of image forming apparatus, the developing ability of the developer decreases as the carrier deteriorates over time, so the developer in the developing device must be replaced from time to time. There is a need.
このため、従来より各種形式の現像剤回収装置
が提案され、実用化もされているが、その１つ
に、現像剤の回収時に現像装置内の現像剤をガイ
ド板によつて案内しつつ現像装置外に排出させ、
これを回収容器に収容する形式の回収装置が公知
である（特開昭55−38519号公報）。この回収装置
は、現像剤を効率よく回収し、回収した現像剤を
回収容器ごと廃棄することができる利点を有して
いる。 For this reason, various types of developer recovery devices have been proposed and put into practical use. discharge it outside the device,
A recovery device in which the waste is stored in a recovery container is known (Japanese Unexamined Patent Publication No. 55-38519). This recovery device has the advantage of efficiently recovering the developer and disposing of the recovered developer together with the recovery container.
ところが上述した現像剤回収装置においては、
現像装置を画像形成装置本体から引き出して現像
剤の回収を行わなければならない。このため現像
剤の回収作業が煩雑となるばかりか、回収作業時
に画像形成装置の周辺を現像剤で汚してしまう恐
れを免れない。 However, in the developer recovery device described above,
The developing device must be pulled out from the main body of the image forming apparatus to collect the developer. This not only complicates the developer recovery operation, but also leaves the area around the image forming apparatus smeared with the developer during the recovery operation.
現像装置を画像形成装置本体内に納めたまま現
像剤を回収しようとしても、現像装置の近傍には
画像形成装置の各種の要素が配置されているた
め、回収容器をセツトするスペースがなく、現像
装置を画像形成装置本体から引き出して現像剤回
収作業を行わざるを得なかつたのである。 Even if you try to collect the developer with the developing device housed inside the image forming apparatus main body, there is no space to set a collection container because various components of the image forming device are arranged near the developing device, There was no choice but to pull out the device from the main body of the image forming apparatus and perform developer recovery work.
そこで、画像形成装置本体内に回収容器を配置
するスペースを予め用意しておくことも考えられ
る。このようにすれば現像装置を画像形成装置本
体内にセツトしたまま、予め用意したスペースに
回収容器を配置して現像剤を回収することができ
る。ところが画像形成装置をこのように構成すれ
ば、普段は使用しない大きなスペースを画像形成
装置本体内に設けなければならぬため、画像形成
装置が必要以上に大型化する。のみならず、画像
形成装置の各種要素を上記スペースを避けて配置
しなければならぬため、画像形成装置の設計自由
度が狭められる欠点も免れない。 Therefore, it is conceivable to prepare a space in advance for arranging the collection container within the main body of the image forming apparatus. In this way, the developer can be collected by placing the collection container in a pre-prepared space while the developing device is set in the main body of the image forming apparatus. However, if the image forming apparatus is configured in this way, a large space that is not normally used must be provided within the image forming apparatus main body, which makes the image forming apparatus larger than necessary. Furthermore, since various elements of the image forming apparatus must be arranged avoiding the above-mentioned spaces, there is also the disadvantage that the degree of freedom in designing the image forming apparatus is narrowed.
本発明は上述した新規な認識に基づきなされた
ものであつて、その目的とするところは、画像形
成装置を大型化したり、設計自由度が狭められる
ような不具合を伴うことなく、現像装置を画像形
成装置本体内に納めたまま現像剤を回収できる画
像形成装置を提供することである。
The present invention has been made based on the above-mentioned novel recognition, and it is an object of the present invention to enable the development of an image forming apparatus without increasing the size of the image forming apparatus or with defects that reduce the degree of freedom in design. An object of the present invention is to provide an image forming apparatus in which a developer can be recovered while being housed in a main body of the forming apparatus.
本発明は、上記目的を達成するため、潜像担持
体に形成された静電潜像を可視像化する現像装置
と、現像装置内の現像剤を排出させる開口に隣接
して位置し、画像形成装置本体に対して着脱自在
な要素と、現像剤の回収時に前記要素を取外して
得た空間に配置される回収容器、及び現像装置内
で流動する現像剤を前記開口を通して回収容器内
に案内するガイド板を有する現像剤回収装置とを
具備して成る画像形成装置を提案する。
In order to achieve the above object, the present invention includes a developing device that visualizes an electrostatic latent image formed on a latent image carrier, and a developing device located adjacent to an opening for discharging the developer in the developing device. an element that is detachable from the main body of the image forming apparatus; a collection container that is disposed in a space obtained by removing the element when collecting developer; and a collection container that allows the developer flowing in the developing device to pass through the opening and into the collection container. An image forming apparatus is proposed which includes a developer recovery device having a guide plate for guiding the developer.
以下、本発明の実施例を図面に基づいて詳述す
る。
Hereinafter, embodiments of the present invention will be described in detail based on the drawings.
第１図及び第２図は、潜像担持体の一例である
ドラム状の感光体１と、この感光体上の静電潜像
を可視像化するための現像装置２と、この現像装
置用の現像剤回収装置３とを有する電子複写機の
部分図であり、第１図は回収装置３の非使用状態
を、第２図は回収装置３の使用状態を示してい
る。ここで、本発明の理解のため図示した電子複
写機の概略構成を説明しておく。 FIGS. 1 and 2 show a drum-shaped photoreceptor 1, which is an example of a latent image carrier, a developing device 2 for visualizing an electrostatic latent image on the photoreceptor, and this developing device. FIG. 1 is a partial view of an electronic copying machine having a developer recovery device 3 for use. FIG. 1 shows the recovery device 3 in an unused state, and FIG. 2 shows the recovery device 3 in a used state. Here, in order to understand the present invention, the schematic structure of the illustrated electronic copying machine will be explained.
第１図に示す現像装置２は、トナーとキヤリヤ
を有する現像剤４を収容した現像タンク５を有
し、このタンク５内に現像剤汲み上げローラ６
と、現像ローラ７とがそれぞれ時計方向に回転可
能に支承されている。ローラ６，７には公知の如
く磁石（図示せず）が内設されている。 The developing device 2 shown in FIG.
and a developing roller 7 are each supported so as to be rotatable in a clockwise direction. As is well known, magnets (not shown) are installed inside the rollers 6 and 7.
複写動作が開始されると、感光体１は反時計方
向に回転駆動され、感光体１の表面に図示してい
ない潜像形成装置によつて静電潜像が形成され、
この潜像は感光体１と現像ローラ７との最も接近
した現像領域Ａへ向けて移動する。 When the copying operation is started, the photoreceptor 1 is rotated counterclockwise, and an electrostatic latent image is formed on the surface of the photoreceptor 1 by a latent image forming device (not shown).
This latent image moves toward the developing area A where the photoreceptor 1 and the developing roller 7 are closest.
一方、汲み上げローラ６と現像ローラ７とが時
計方向に回転駆動され、これによりタンク５の底
部に収容されていた現像剤がこれらローラ６，７
の周面を矢印Ｂ方向に搬送されて現像領域Ａに至
り、現像剤中のトナーが感光体表面の静電潜像に
静電的に付着し、潜像を可視像化する。現像領域
Ａを通過した現像剤はスクレーパ８によつて現像
ローラ７から掻き取られ、タンク５の底部に戻さ
れる。このように現像剤はタンク５内で矢印Ｂで
示した循環径路を循環流動し、その間に現像動作
が行われる。 On the other hand, the pumping roller 6 and the developing roller 7 are driven to rotate clockwise, and as a result, the developer stored in the bottom of the tank 5 is transferred to these rollers 6, 7.
The toner is conveyed along the circumferential surface of the developer in the direction of arrow B and reaches the development area A, where the toner in the developer electrostatically adheres to the electrostatic latent image on the surface of the photoreceptor, making the latent image visible. The developer that has passed through the developing area A is scraped off from the developing roller 7 by a scraper 8 and returned to the bottom of the tank 5. In this manner, the developer circulates and flows through the circulation path shown by arrow B within the tank 5, and a developing operation is performed during this period.
上記の如く形成された可視像は、感光体１の回
転に伴つて転写位置Ｃへ向けて移動する。９は転
写を行う転写器である。 The visible image formed as described above moves toward the transfer position C as the photoreceptor 1 rotates. 9 is a transfer device that performs transfer.
一方、転写紙１０が図示していない給紙装置か
ら上側ガイド板１１と下側ガイド板１２とにより
案内されつつ転写位置Ｃへ向けて給送され、転写
位置Ｃへ至つた上記可視像に転写紙１０が重ね合
せられ、転写器９の作用下に、可視像が転写紙１
０に転写される。 On the other hand, the transfer paper 10 is fed from a paper feeding device (not shown) toward the transfer position C while being guided by the upper guide plate 11 and the lower guide plate 12, and the visible image that has reached the transfer position C is The transfer papers 10 are superimposed, and under the action of the transfer device 9, the visible image is transferred to the transfer paper 1.
Transferred to 0.
現像装置２と転写器９との間には、感光体１に
付着したトナーの静電結合力を弱め、可視像の転
写効率を高めるため、感光体１に光を照射する露
光ランプ１３が設けられている。図示した例で
は、このランプ１３と、これを収容するケース１
４と、このケース１４を固定支持する基板１５
と、下側ガイド板１２とが一体的な１つのユニツ
ト１６を構成しており、下側ガイド板１２は連結
部材（図示せず）によつてケース１４に支持され
ている。基板１５は複写機本体の底板に設けられ
た２つのガイドレール１７に嵌合し、ユニツト全
体が第１図における紙面と垂直な方向に移動可能
に支承されている。このように露光ランプ１３は
複写機本体に対して着脱自在となつている。 Between the developing device 2 and the transfer device 9, there is an exposure lamp 13 that irradiates the photoreceptor 1 with light in order to weaken the electrostatic bonding force of the toner adhering to the photoreceptor 1 and increase the transfer efficiency of the visible image. It is provided. In the illustrated example, this lamp 13 and a case 1 that accommodates the lamp 13 are shown.
4, and a substrate 15 that fixedly supports this case 14.
and the lower guide plate 12 constitute one integrated unit 16, and the lower guide plate 12 is supported by the case 14 by a connecting member (not shown). The base plate 15 fits into two guide rails 17 provided on the bottom plate of the main body of the copying machine, and the entire unit is supported so as to be movable in a direction perpendicular to the plane of the paper in FIG. In this way, the exposure lamp 13 is detachable from the main body of the copying machine.
上述の如く構成された複写機にて使用される現
像剤中のキヤリヤは、経時的に徐々に劣化してい
く。劣化したキヤリヤを含む現像剤によつて可視
像を形成すると、その画像濃度が低下し、品質の
高い複写画像が得られなくなる。このため、現像
装置２のタンク５に収容された現像剤４は、これ
を時々新しい現像剤と交換する必要があり、この
目的で以下に説明するように現像剤回収装置３が
使用される。 The carrier in the developer used in the copying machine constructed as described above gradually deteriorates over time. When a visible image is formed with a developer containing degraded carrier, the image density decreases and a high quality copy image cannot be obtained. For this reason, the developer 4 contained in the tank 5 of the developing device 2 needs to be replaced with new developer from time to time, and a developer recovery device 3 is used for this purpose as explained below.
図示した現像剤回収装置３は、その非使用時に
ユニツト１６の基板１５上に載置され、複写機本
体内に収納されている。またこの回収装置３は第
２図及び３図に示す如く、現像剤の通路１８を構
成する枠状の口部材１９と、可撓性材料から作ら
れた袋２０（例えばポリエチレン袋）より成る現
像剤回収用の回収容器を有している。 The illustrated developer recovery device 3 is placed on the base plate 15 of the unit 16 when not in use, and is housed within the main body of the copying machine. As shown in FIGS. 2 and 3, this recovery device 3 includes a frame-shaped opening member 19 constituting a developer passage 18, and a bag 20 made of a flexible material (for example, a polyethylene bag). It has a collection container for collecting the agent.
口部材１９の右端部には、その通路１８の開口
周囲を延びる溝２１が形成され、この溝２１に袋
２０の口部が当てられ、これがクランプ部材２２
によつて押えられて袋２０が口部材１９に取付け
られ、回収容器が構成される。クランプ部材２２
を締付け又は解除することによつて、袋２０を口
部材１９に対して容易に着脱することができる。 A groove 21 extending around the opening of the passage 18 is formed at the right end of the mouth member 19 , and the mouth of the bag 20 is placed against this groove 21 , and this is held in place by the clamp member 22 .
The bag 20 is attached to the mouth member 19 by being pressed by the handles, thereby forming a collection container. Clamp member 22
By tightening or releasing the bag 20, the bag 20 can be easily attached to and removed from the mouth member 19.
口部材１９の第２図における左端部には、これ
を現像装置２に対して位置決めして係止せしめる
係合手段が設けられており、この係合手段は、第
２図及び第３図に示すように、口部材１９の左端
上側に設けられた係合フランジ２３と、同様に左
端下側に形成された係合溝２４とにより構成され
ている。 At the left end of the opening member 19 in FIG. 2, there is provided an engaging means for positioning and locking the opening member 19 with respect to the developing device 2, and this engaging means is shown in FIGS. 2 and 3. As shown, it is comprised of an engagement flange 23 provided at the upper left end of the mouth member 19 and an engagement groove 24 similarly formed at the lower left end.
口部材１９の通路１８内には、ガイド板２５が
枢軸２６によつて回動可能に支承され、この枢軸
２６には、ガイド板２５を回動させるためのレバ
ー２７が固着され、該レバー２７は口部材１９の
外側に位置している。現像剤回収装置３を第１図
に示すように収納しておくときは、ガイド板２５
は口部材１９の通路１８内に収められている。こ
のとき口部材１９と袋２０は、これらを互いに分
離しておいてもよいし、これらをクランプ部材２
２によつて予め連結しておいてもよい。 A guide plate 25 is rotatably supported in the passage 18 of the mouth member 19 by a pivot 26, and a lever 27 for rotating the guide plate 25 is fixed to the pivot 26. is located on the outside of the mouth member 19. When storing the developer recovery device 3 as shown in FIG.
is contained within the passageway 18 of the mouth member 19. At this time, the mouth member 19 and the bag 20 may be separated from each other, or they may be separated from each other by the clamp member 2.
2 may be connected in advance.
一方、第１図に示す如く露光ランプ１３に対向
した現像タンク５の部分には、現像剤排出用の開
口２８が形成され、この開口は通常、仕切板２９
により閉じられている。この仕切板２９は、開口
２８の上下端に設けられたガイド溝３０とガイド
突起３１とに、紙面と垂直な方向に摺動可能に嵌
合している。 On the other hand, as shown in FIG. 1, an opening 28 for discharging the developer is formed in the portion of the developing tank 5 facing the exposure lamp 13, and this opening is normally connected to a partition plate 29.
Closed by. The partition plate 29 is fitted into a guide groove 30 and a guide protrusion 31 provided at the upper and lower ends of the opening 28 so as to be slidable in a direction perpendicular to the plane of the drawing.
次に、現像剤回収装置３によつて現像剤を交換
する操作につき説明する。 Next, the operation of exchanging the developer using the developer recovery device 3 will be explained.
先ず、露光ランプ１３を含むユニツト１６を、
ガイドレール１７に沿つて第１図の紙面と垂直な
方向に引き出し、このユニツトを複写機本体外に
取り出す。これにより、複写機本体内にはそれま
でユニツト１６が占めていた大きな空間ができ
る。 First, the unit 16 including the exposure lamp 13 is
The unit is pulled out along the guide rail 17 in a direction perpendicular to the paper plane of FIG. 1, and taken out of the copying machine main body. This creates a large space within the copying machine body that was previously occupied by the unit 16.
次に現像装置を複写機本体内に納めたまま、仕
切板２９を紙面に垂直な方向に引いてこれを取り
出し、タンク５に形成された開口２８を開く。そ
してユニツト１６に収められていた現像剤回収装
置３をユニツト１６から取り出してその口部材１
９と袋２０とをクランプ部材２２により前述の如
く連結した状態にし、口部材１９の係合フランジ
２３と係合溝２４とを、タンク開口２８のガイド
溝３０とガイド突起３１とにそれぞれ係合させ、
回収装置３を第２図における紙面と垂直な方向に
押し込む。これによつて回収装置３は、第２図に
示す如く現像装置２のタンク５に、該装置２に対
する予め定められた所定の位置に位置決めされて
取付けられる。 Next, with the developing device still housed in the copying machine main body, the partition plate 29 is pulled in a direction perpendicular to the plane of the paper to take it out, and the opening 28 formed in the tank 5 is opened. Then, the developer recovery device 3 housed in the unit 16 is taken out from the unit 16 and its opening member 1 is removed.
9 and the bag 20 are connected as described above by the clamp member 22, and the engaging flange 23 and the engaging groove 24 of the mouth member 19 are respectively engaged with the guide groove 30 and the guide protrusion 31 of the tank opening 28. let me,
The recovery device 3 is pushed in a direction perpendicular to the plane of the paper in FIG. As a result, the collecting device 3 is positioned and attached to the tank 5 of the developing device 2 at a predetermined position relative to the developing device 2, as shown in FIG.
次に口部材１９の外側に位置するレバー２７を
回動操作し、ガイド板２５の先端を第２図に示す
ようにタンク５内のスクレーパ８に当接させる。 Next, the lever 27 located outside the mouth member 19 is rotated to bring the tip of the guide plate 25 into contact with the scraper 8 inside the tank 5, as shown in FIG.
上述の如き準備作業を行つた後、現像装置２に
おける汲み上げローラ６と現像ローラ７とを第２
図における時計方向に回転駆動する。これによつ
てタンクの底部に収容された現像剤は、両ローラ
６，７により搬送され、先り説明した現像時の動
作と同様にスクレーパ８によつて現像ローラ７か
ら掻き落される。このように現像剤の交換時に現
像装置２内で流動する現像剤は、ガイド板２５に
より案内されつつ、タンクの開口２８から現像装
置外へ流出し、口部材２９の剤入口部から該口部
材１９内に導入され、その通路１８を通つて袋２
０に送り込まれ、ここに収容される。その際、ク
ランプ部材２２は口部材１９と袋２０との間から
現像剤が漏出することを防止するパツキンとして
の用もなす。 After performing the preparation work as described above, the pumping roller 6 and the developing roller 7 in the developing device 2 are replaced with the second one.
Rotate clockwise in the figure. As a result, the developer stored at the bottom of the tank is conveyed by both rollers 6 and 7, and is scraped off from the developing roller 7 by the scraper 8 in the same manner as in the development operation described above. In this way, the developer flowing within the developing device 2 when replacing the developer flows out of the developing device from the opening 28 of the tank while being guided by the guide plate 25, and flows from the developer inlet portion of the opening member 29 to the outside of the developing device. 19 and through its passage 18 the bag 2
0 and is housed here. At this time, the clamp member 22 also serves as a gasket to prevent the developer from leaking from between the opening member 19 and the bag 20.
上記動作を所定時間行えば、タンク５内の現像
剤をほとんど回収容器の袋２０に回収することが
できる。この回収作業の終了後、前述の操作と逆
に、回収装置３を第２図における紙面と垂直な方
向に引出し、口部材１９に付着した現像剤を袋２
０内に落してから、クランプ部材２２を取外し、
袋２０の口部を密閉すれば、これをそのまま廃棄
することができる。 If the above operation is performed for a predetermined period of time, most of the developer in the tank 5 can be collected into the bag 20 of the collection container. After this collection operation is completed, the collection device 3 is pulled out in a direction perpendicular to the plane of the paper in FIG.
0, then remove the clamp member 22,
If the mouth of the bag 20 is sealed, it can be disposed of as is.
次いで、袋２０を取外した口部材１９だけを、
或いはこの口部材１９と新たな袋とをユニツト１
６に収容し、これを第１図に示す如く複写機本体
に納め、しかも仕切板２９で開口２８を閉じ、新
たな現像剤をタンクの上部開口（図示せず）を通
してタンク内に収めれば、現像剤交換作業を全て
終了する。 Next, only the opening member 19 from which the bag 20 has been removed is
Alternatively, combine this opening member 19 and a new bag into unit 1.
6 and place it in the main body of the copying machine as shown in FIG. 1, close the opening 28 with the partition plate 29, and put new developer into the tank through the upper opening (not shown) of the tank. , complete all developer replacement work.
以上説明したように、通常は現像装置２内の現
像剤４を排出させる開口２８に隣接して位置する
着脱自在な要素である露光ランプ１３を、現像剤
の回収時に、その他の要素１２，１４，１５と共
に複写機本体から取外し、これによつて得られた
複写機本体内の空間に、口部材１９と袋２０より
成る回収容器を配置し、現像装置２内で流動する
現像剤４をガイド板２５によつて案内しながら、
開口２８から排出させ、回収容器に回収するよう
に構成されているため、現像装置２を複写機本体
内に納めたまま現像剤を回収することができる。
よつて、回収作業を簡素化できると共に、複写機
の周辺を現像剤で汚す不具合を防止できる。しか
も露光ランプ１３を取外して得た空間に回収容器
を配置するので、複写機が必要以上に大型化する
ことはなく、複写機の設計自由度が狭められる不
具合も発生しない。 As described above, the exposure lamp 13, which is a removable element located adjacent to the opening 28 for discharging the developer 4 in the developing device 2, is normally connected to the other elements 12, 14 when collecting the developer. , 15 from the copying machine main body, and a collection container consisting of an opening member 19 and a bag 20 is placed in the space thus obtained inside the copying machine main body to guide the developer 4 flowing in the developing device 2. While being guided by the board 25,
Since the developer is configured to be discharged from the opening 28 and collected in the collection container, the developer can be collected while the developing device 2 is housed within the copying machine main body.
Therefore, the collection work can be simplified and the problem of staining the area around the copying machine with developer can be prevented. Furthermore, since the collection container is placed in the space obtained by removing the exposure lamp 13, the copying machine does not become unnecessarily large, and no problem arises in which the degree of freedom in designing the copying machine is reduced.
また、タンク５内で現像剤をその循環径路に沿
つて流動させ、流動する現像剤を現像装置外に導
き出してこれを回収するので、この回収作業を効
率的に行うことができる。 Further, since the developer is made to flow within the tank 5 along its circulation path and the flowing developer is led out of the developing device and collected, this collection work can be performed efficiently.
また図示した構成例では、現像剤回収装置３
が、係合フランジ２３及び係合溝２４から構成さ
れた係合手段によつて、現像装置２の開口２８に
整合され、現像装置２に係止されるので、流動す
る現像剤を効率よく回収できる。すなわち、ガイ
ド板２５とスクレーパ８との間に現像剤の漏れを
生ぜしめるような間〓が形成されることを阻止し
た状態に、回収装置３のガイド板２５を現像装置
２に対して位置決めできるので、現像剤回収時に
現像剤がタンクの底部へ落下するような不都合を
阻止することができ、短時間で効果的に現像剤を
回収することができるのである。 Further, in the illustrated configuration example, the developer recovery device 3
is aligned with the opening 28 of the developing device 2 and locked to the developing device 2 by the engaging means composed of the engaging flange 23 and the engaging groove 24, so that the flowing developer can be efficiently collected. can. That is, the guide plate 25 of the collection device 3 can be positioned with respect to the developing device 2 in a state in which a gap that would cause developer leakage is prevented from being formed between the guide plate 25 and the scraper 8. Therefore, it is possible to prevent the developer from falling to the bottom of the tank when collecting the developer, and it is possible to effectively collect the developer in a short time.
また、図示した構成によれば、回収した現像剤
を収容する袋２０が折り畳み自在な可撓性材料に
より構成されているので、回収装置３の非使用時
に複写機本体に収納された袋２０が占めるスペー
スを小さくすることができ、このスペースとして
ほぼ口部材を収納できる空間さえあれば充分であ
る。逆に現像剤の回収時には袋２０は大きく膨れ
るので、一度に多量の現像剤を袋に回収でき、袋
の大きさによつては一度の回収作業でタンク５内
の全ての現像剤を回収することも可能である。ま
た、この袋２０は変形可能であるため、現像剤回
収作業時に袋２０の置かれる空間が比較的狭いと
きも、その割には多量の現像剤を袋内に収容する
ことが可能である。 Further, according to the illustrated configuration, since the bag 20 that accommodates the collected developer is made of a foldable flexible material, the bag 20 stored in the copying machine body when the collection device 3 is not in use is The space it occupies can be reduced, and it is sufficient to have enough space to accommodate the mouth member. On the contrary, since the bag 20 swells greatly when collecting the developer, a large amount of developer can be collected in the bag at once, and depending on the size of the bag, all the developer in the tank 5 can be collected in one collection operation. It is also possible. Further, since the bag 20 is deformable, even when the space in which the bag 20 is placed during developer collection work is relatively narrow, a relatively large amount of developer can be stored in the bag.
なお、上述の如き現像剤回収作業は、一般に専
門のサービスマンによつて行われているが、この
ような場合、回収装置３を複写機本体に収納して
おくことができれば、サービスマンがその都度回
収装置を持ち運ばずに済み、作業効率を高めるこ
とができる。また、新たな回収容器をサービスマ
ンがユーザーの元にその都度運ぶようにしたとき
も、その袋が可撓性を有しているので、その持ち
運びはいたつて簡単である。使用済み現像剤を廃
棄場所で棄てる作業も袋をシールした状態で行え
るので、トナーを飛散させることなく簡単に行う
ことができる。 Incidentally, the above-mentioned developer recovery work is generally performed by a specialized service person, but in such a case, if the recovery device 3 can be stored in the main body of the copying machine, the service person can do the work. This eliminates the need to carry a collection device each time, increasing work efficiency. Further, even when a service person carries a new collection container to the user each time, the bag is flexible, so it is easy to carry it. Since the used developer can be disposed of at a disposal site with the bag sealed, it can be easily done without scattering the toner.
第４図に示した現像剤回収装置においては、現
像装置外へ現像剤をガイドするガイド板がタンク
の開口２８用の仕切板１２９によつて構成され、
この仕切板１２９は、軸３２のまわりを回動可能
に支承されている。現像剤回収作業時には、仕切
板１２９は第４図に実線で示す状態に回動して現
像剤を案内するが、通常は、鎖線で示す如くタン
ク開口２８を閉鎖する。なお、この実施例におい
ては、回収装置３の口部材１９に設けられた係合
手段23、24は、タンクの開口における溝と突起
（第１図参照）ではなく、別個に設けられたガイ
ド部材３３，３４に係合する。 In the developer recovery device shown in FIG. 4, a guide plate for guiding the developer out of the developing device is constituted by a partition plate 129 for the opening 28 of the tank.
This partition plate 129 is rotatably supported around the shaft 32. During the developer recovery operation, the partition plate 129 rotates to the state shown by the solid line in FIG. 4 to guide the developer, but normally the tank opening 28 is closed as shown by the chain line. In this embodiment, the engaging means 23 and 24 provided on the mouth member 19 of the recovery device 3 are not grooves and protrusions at the opening of the tank (see FIG. 1), but are separately provided guide members. 33 and 34.
第５図に示す現像剤回収装置３の回収容器に
は、口部材が設けられておらず、その代り可撓性
の袋２０の口部に直に係合フランジ２３と係合溝
２４とから成る係合手段が付設され、この溝２４
とフランジ２３が、第２図又は第４図に示す実施
例と同様に現像装置に係合できるようになつてい
る。古い現像剤を収容した回収容器は、係合手段
23、24と共に廃棄される。 The collection container of the developer collection device 3 shown in FIG. This groove 24 is provided with an engaging means consisting of
and flanges 23 are adapted to engage a developing device in the same manner as in the embodiment shown in FIGS. 2 or 4. The collection container containing old developer is
Discarded along with 23 and 24.
現像剤回収装置に付設される係合手段を、溝と
フランジではなく、溝だけ又はフランジだけで構
成し、或いはそれ自体公知な他の適宜な係合手段
を用いることもできる。また、現像剤を収容する
回収容器が可撓性を有しておらず剛体から構成さ
れているときも本発明を適用できる。 The engaging means attached to the developer recovery device may consist of only a groove or only a flange instead of a groove and a flange, or other suitable engaging means known per se may be used. Further, the present invention can also be applied when the collection container containing the developer is not flexible and is made of a rigid body.
また、本発明は図示した形式以外の適宜な画像
形成装置、例えばカスケード現像装置を備えた複
写機又は静電記録装置等にも適用可能である。 Further, the present invention is also applicable to other suitable image forming apparatuses than those shown in the drawings, such as copying machines or electrostatic recording apparatuses equipped with a cascade developing device.
本発明によれば、現像装置を画像形成装置本体
に収納したまま現像剤の回収作業を行うことがで
き、画像形成装置周辺を現像剤で汚す不具合を防
止できる。しかも画像形成装置の大型化を防止で
きると共に、この装置の設計自由度が狭められる
不具合も阻止できる。
According to the present invention, the developer can be collected while the developing device is housed in the main body of the image forming apparatus, and the problem of staining the periphery of the image forming apparatus with the developer can be prevented. Moreover, it is possible to prevent the image forming apparatus from increasing in size, and also to prevent the problem of narrowing the degree of freedom in designing the apparatus.
第１図は現像剤回収装置の非使用時における電
子複写機の一例を示す断面部分図、第２図は現像
剤回収装置の使用時における電子複写機の断面部
分図、第３図は第１図及び第２図に示す現像剤回
収装置の斜視図、第４図は他の実施例における第
２図と同様な断面図、第５図はさらに他の実施例
を示す斜視図である。
２……現像装置、３……現像剤回収装置、４…
…現像剤、１３……露光ランプ、２５……ガイド
板、２８……開口。
FIG. 1 is a partial cross-sectional view showing an example of an electronic copying machine when the developer recovery device is not in use, FIG. 2 is a partial cross-sectional view of the electronic copying machine when the developer recovery device is in use, and FIG. FIG. 4 is a sectional view similar to FIG. 2 in another embodiment, and FIG. 5 is a perspective view showing still another embodiment. 2...Developing device, 3...Developer recovery device, 4...
...developer, 13...exposure lamp, 25...guide plate, 28...opening.
Claims (1)
する現像装置と、現像装置内の現像剤を排出させ
る開口に隣接して位置し、画像形成装置本体に対
して着脱自在な要素と、現像剤の回収時に前記要
素を取外して得た空間に配置される回収容器、及
び現像装置内で流動する現像剤を前記開口を通し
て回収容器内に案内するガイド板を有する現像剤
回収装置とを具備して成る画像形成装置。 ２ 前記着脱自在な要素が、潜像担持体に形成さ
れた可視像の転写効率を高めるため、潜像担持体
に光を照射する露光ランプである特許請求の範囲
第１項に記載の画像形成装置。[Scope of Claims] 1. A developing device that visualizes an electrostatic latent image formed on a latent image carrier, and an image forming apparatus main body located adjacent to an opening for discharging the developer in the developing device. a collection container disposed in a space obtained by removing the element when collecting developer; and a guide plate that guides the developer flowing in the developing device into the collection container through the opening. An image forming apparatus comprising: a developer recovery device having a developer recovery device; 2. The image according to claim 1, wherein the detachable element is an exposure lamp that irradiates the latent image carrier with light in order to improve the transfer efficiency of the visible image formed on the latent image carrier. Forming device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254780A JPS5786875A (en) | 1980-11-20 | 1980-11-20 | Developer recovery device for developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16254780A JPS5786875A (en) | 1980-11-20 | 1980-11-20 | Developer recovery device for developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5786875A JPS5786875A (en) | 1982-05-31 |
| JPH0158511B2 true JPH0158511B2 (en) | 1989-12-12 |
Family
ID=15756662
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16254780A Granted JPS5786875A (en) | 1980-11-20 | 1980-11-20 | Developer recovery device for developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5786875A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4523615A (en) * | 1983-03-17 | 1985-06-18 | International Business Machines Corporation | Method and apparatus for in situ purging a xerographic developer |
| US4547064A (en) * | 1984-08-31 | 1985-10-15 | Xerox Corporation | Electrostatographic reproducing apparatus |
| DE3532234A1 (en) * | 1984-09-11 | 1986-03-20 | Sharp K.K., Osaka | ELECTROPHOTOGRAPHIC COPIER |
| JP2553901B2 (en) * | 1988-02-05 | 1996-11-13 | 日本電信電話株式会社 | Optical fiber tape assembly type optical fiber cable |
| JP2865451B2 (en) * | 1991-07-29 | 1999-03-08 | シャープ株式会社 | Image forming device |
| KR100896262B1 (en) * | 2007-07-02 | 2009-05-08 | 삼성전자주식회사 | Developing device and image forming apparatus having the same |
| JP5454117B2 (en) * | 2009-12-15 | 2014-03-26 | 株式会社リコー | Developer discharging mechanism and image forming apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538519A (en) * | 1978-09-09 | 1980-03-18 | Olympus Optical Co Ltd | Method and device for discharging of developer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6237246Y2 (en) * | 1978-12-27 | 1987-09-22 |
-
1980
- 1980-11-20 JP JP16254780A patent/JPS5786875A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5538519A (en) * | 1978-09-09 | 1980-03-18 | Olympus Optical Co Ltd | Method and device for discharging of developer |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5786875A (en) | 1982-05-31 |
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