JP2675916B2 - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JP2675916B2 JP2675916B2 JP2334162A JP33416290A JP2675916B2 JP 2675916 B2 JP2675916 B2 JP 2675916B2 JP 2334162 A JP2334162 A JP 2334162A JP 33416290 A JP33416290 A JP 33416290A JP 2675916 B2 JP2675916 B2 JP 2675916B2
- Authority
- JP
- Japan
- Prior art keywords
- developer
- shutter
- cam
- supply
- lever
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
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- Dry Development In Electrophotography (AREA)
Description
【発明の詳細な説明】 〔目次〕 概要 産業上の利用分野 従来の技術（第８図） 発明が解決しようとする課題 課題を解決するための手段（第１図） 作用 実施例 （ａ）一実施例の説明（第２図乃至第７図） （ｂ）他の実施例の説明 発明の効果 〔概要〕 現像剤排出シャッタを開いて，現像容器から現像剤を
排出した後，該現像剤供給シャッタを開いて，現像容器
に現像剤を供給し，現像剤の交換を行うようにした現像
装置に関し， 現像剤を自動的に交換することを目的とし， 内部に現像剤を像担持体に搬送する現像剤搬送手段
を，上部に現像剤供給口を，下部に現像剤排出口を備え
る現像容器と，該現像剤供給口の開閉のための現像供給
シャッタと，該現像剤排出口の開閉のための現像剤排出
シャッタとを有し，該現像剤排出シャッタを開いて，現
像容器から現像剤を排出した後，該現像剤供給シャッタ
を開いて，現像容器に現像剤を供給し，現像剤の交換を
行うようにした現像装置において、レバーによりスライ
ドされるスライドシャッタで構成された現像剤供給シャ
ッタと、レバーによりスライドされるスライドシャッタ
で構成された現像剤排出シャッタと、該現像剤供給シャ
ッタをスライドするレバーと結合する第１のカムと、該
現像剤排出シャッタをスライドするレバーと結合する第
２のカムと、現像容器外の同一側部に配置された該第１
のカムと第２のカムを連結する動作軸と、外部からの現
像剤交換指示に応じて該動作軸を一定方向へ回転させる
駆動モータと、該現像剤供給シャッタの上に設けられた
現像剤供給カセットと、該現像剤排出シャッタの下に設
けられた現像剤収容カセットを具備し、該駆動モータが
駆動されて該動作軸が一定方向へ回転することにより、
第２のカムがレバーを介し該現像剤排出シャッタを開
き、該現像器内の現像剤が該現像剤排出口から該現像剤
収容カセット内へ落下した後に、該現像剤排出シャッタ
が閉じるようにスライド動作させ、それに引続いて第１
のカムがレバーを介して該現像剤供給シャッタを開き、
該現像剤収容カセットから該現像供給口を通じて該現像
器内へ現像剤が供給された後に該現像剤供給シャッタが
閉じるようにスライド動作させる。DETAILED DESCRIPTION [Table of Contents] Outline Industrial field of application Conventional technology (Fig. 8) Problem to be solved by the invention Means for solving the problem (Fig. 1) Operation Example (a) One Description of Embodiments (FIGS. 2 to 7) (b) Description of Other Embodiments [Effect of the Invention] [Outline] After the developer discharge shutter is opened and the developer is discharged from the developing container, the developer is supplied. Regarding a developing device in which the shutter is opened and the developer is supplied to the developing container to replace the developer, the developer is conveyed to the image carrier inside for the purpose of automatically replacing the developer. And a developing container having a developer supply port on the upper side and a developer discharge port on the lower side, a developing supply shutter for opening and closing the developer supply port, and an opening and closing of the developer discharge port. And a developer discharging shutter for opening the developer discharging shutter. After discharging the developer from the developing container, the developer supply shutter is opened to supply the developer to the developing container, and the developer is exchanged. And a developer discharging shutter including a slide shutter that is slid by a lever, a first cam that is connected to a lever that slides the developer supplying shutter, and the developer discharging shutter. A second cam that is coupled to a lever that slides the first cam and the first cam that is disposed on the same side outside the developer container
Shaft for connecting the second cam to the second cam, a drive motor for rotating the motion shaft in a certain direction in response to an external developer replacement instruction, and a developer provided on the developer supply shutter. A supply cassette and a developer accommodating cassette provided below the developer discharge shutter are provided, and the drive motor is driven to rotate the operation shaft in a fixed direction.
A second cam opens the developer discharge shutter via a lever, and the developer discharge shutter is closed after the developer in the developing device drops from the developer discharge port into the developer accommodating cassette. Sliding, and then the first
Cam opens the developer supply shutter via a lever,
After the developer is supplied from the developer accommodating cassette into the developing device through the developing supply port, the developer supplying shutter is slid so as to be closed.
本発明は，現像剤排出シャッタを開いて，現像容器か
ら現像剤を排出した後，該現像剤供給シャッタを開い
て，現像容器に現像剤を供給し，現像剤の交換を行うよ
うにした現像装置に関する。According to the present invention, the developer discharge shutter is opened to discharge the developer from the developing container, and then the developer supply shutter is opened to supply the developer to the developing container to replace the developer. Regarding the device.
電子写真方式や静電記録方式の印刷装置では，形成さ
れた静電潜像を可視像化するのに，現像装置が用いられ
ている。In electrophotographic and electrostatic recording printers, a developing device is used to visualize the formed electrostatic latent image.
このような現像装置として，粉体の現像剤を用いるも
のが広く利用されており，一成分現像剤と二成分現像剤
を用いるものが知られている。As such a developing device, a device using a powder developer is widely used, and a device using a one-component developer and a two-component developer is known.
このような粉体現像装置，特に二成分現像装置では，
使用に伴い現像剤，特にキャリアが劣化する。In such a powder developing device, especially a two-component developing device,
The developer, especially the carrier, deteriorates with use.
このため，現像装置内の現像剤を定期的に交換する必
要がある。Therefore, it is necessary to regularly replace the developer in the developing device.
第８図は従来技術の説明図である。 FIG. 8 is an explanatory diagram of the prior art.
第８図（Ａ），第８図（Ｂ）に示すように，二成分現
像装置１は、現像容器10内の二成分現像剤を撹拌ローラ
14b,14cによって，撹拌し，供給ローラ14aにより，撹拌
した二成分現像剤を現像ローラ11に供給し，現像ローラ
11（現像剤搬送手段）が感光ドラム（像担持体）２に二
成分現像剤を搬送して感光ドラム２上の静電潜像を二成
分現像剤で現像する。As shown in FIGS. 8A and 8B, the two-component developing device 1 includes a stirring roller for stirring the two-component developer in the developing container 10.
The two-component developer agitated by 14b and 14c and agitated by the supply roller 14a is supplied to the developing roller 11,
11 (developer conveying means) conveys the two-component developer to the photosensitive drum (image carrier) 2 to develop the electrostatic latent image on the photosensitive drum 2 with the two-component developer.
この二成分現像剤を交換できる現像器として，現像容
器10の上部に現像剤供給口12を，下部に現像剤排出口13
を設け，現像剤供給口12に供給穴15aを有する現像剤供
給シャッタ15を，現像剤排出口13に排出穴16aを有する
現像剤排出シャッタ16を設けたものが提案されている。As a developing device capable of exchanging the two-component developer, a developer supply port 12 is provided at the upper part of the developing container 10 and a developer discharge port 13 is provided at the lower part.
It is proposed that the developer supply port 12 is provided with a developer supply shutter 15 having a supply hole 15a, and the developer discharge port 13 is provided with a developer discharge shutter 16 having a discharge hole 16a.
この現像器では，現像剤排出シャッタ16を手動で開
き，現像容器10内の現像剤を排出し、現像剤排出シャッ
タ16を閉じ，次に現像剤供給シャッタ15を手動で開き，
現像容器10に新しい現像剤を投入し，現像剤供給シャッ
タ15を閉じる作業を行うことによって，現像剤の交換が
できる。In this developing device, the developer discharge shutter 16 is manually opened, the developer in the developer container 10 is discharged, the developer discharge shutter 16 is closed, and then the developer supply shutter 15 is manually opened.
By inserting new developer into the developing container 10 and closing the developer supply shutter 15, the developer can be replaced.
しかしながら，従来技術では，次の問題があった。 However, the conventional technology has the following problems.
現像剤交換作業の手順が多いため，ユーザーである
交換作業者がとまどい，手順を間違え，現像剤を飛散さ
せたり，交換し忘れが生じる。Since there are many procedures for the developer replacement work, the replacement worker who is the user is confused, and the procedure may be mistaken, and the developer may be scattered or forgotten to be replaced.
手動で装置内部のシャッタ15,16を操作する必要が
あるため，作業しにくく，しかも現像剤で手を汚すおそ
れがある。Since it is necessary to manually operate the shutters 15 and 16 inside the apparatus, it is difficult to perform the work, and there is a risk that the developer may stain the hands.
従って，本発明は，現像剤を自動的に交換することが
できる現像装置を提供することを目的とする。Therefore, an object of the present invention is to provide a developing device capable of automatically replacing the developer.
第１図は，本発明の原理図である。 FIG. 1 is a diagram illustrating the principle of the present invention.
本発明の請求項（１）は，第１図に示すように，内部
に現像剤を像担持体に搬送する現像剤搬送手段11を，上
部に現像剤供給口12を，下部に現像剤排出口13を備える
現像容器10と，該現像剤供給口12の開閉のための現像剤
供給シャッタ15と，該現像剤排出口13の開閉のための現
像剤排出シャッタ16とを有し，該現像剤排出シャッタ16
を開いて，現像容器10から現像剤を排出した後，該現像
剤供給シャッタ15を開いて，現像容器10に現像剤を供給
し，現像剤の交換を行うようにした現像装置において，
現像剤交換指示に応じて，該現像剤排出シャッタ16を開
いた後，該現像剤排出シャッタ16を閉じて，該現像剤供
給シャッタ15を開き，該現像剤供給シャッタ15を閉じる
ように，該現像剤排出シャッタ16及び該現像剤供給シャ
ッタ15を駆動する開閉駆動部３を設けたことを特徴とす
る。According to claim (1) of the present invention, as shown in FIG. 1, a developer transport means 11 for transporting the developer to the image carrier is provided inside, a developer supply port 12 is provided at the top, and a developer discharge port is provided at the bottom. A developing container 10 having an outlet 13, a developer supply shutter 15 for opening and closing the developer supply port 12, and a developer discharge shutter 16 for opening and closing the developer discharge port 13 are provided. Agent discharge shutter 16
After discharging the developer from the developing container 10, the developer supply shutter 15 is opened to supply the developer to the developing container 10 to replace the developer.
In response to a developer replacement instruction, after opening the developer discharge shutter 16, the developer discharge shutter 16 is closed, the developer supply shutter 15 is opened, and the developer supply shutter 15 is closed. The opening / closing drive unit 3 for driving the developer discharging shutter 16 and the developer supplying shutter 15 is provided.
又，本発明の請求項（２）は，請求項（１）におい
て，前記現像剤供給シャッタ15上に現像剤供給カセット
を設けるとともに，前記現像剤排出シャッタ16の下に現
像剤収容カセットを設けたことを特徴とする。According to claim (2) of the present invention, in claim (1), a developer supply cassette is provided on the developer supply shutter 15 and a developer accommodating cassette is provided under the developer discharge shutter 16. It is characterized by that.
本発明では，現像剤交換指示に応じて，現像剤排出シ
ャッタ16を開いた後，現像剤排出シャッタ16を閉じて，
現像剤供給シャッタ15を開き，現像剤供給シャッタ15を
閉じるように，現像剤排出シャッタ16及び現像剤供給シ
ャッタ15を駆動する開閉駆動部３を設けたので，現像剤
の交換を自動化でき，手動作業を要しない。In the present invention, in response to a developer replacement instruction, after opening the developer discharge shutter 16, the developer discharge shutter 16 is closed,
Since the opening / closing drive unit 3 for driving the developer discharging shutter 16 and the developer supplying shutter 15 is provided so that the developer supplying shutter 15 is opened and the developer supplying shutter 15 is closed, the replacement of the developer can be automated and can be performed manually. No work required.
このため，現像剤の交換に際し，現像剤の飛散や交換
のし忘れを防止でき，現像剤による手の汚れも防げる。Therefore, when the developer is replaced, it is possible to prevent the developer from scattering and forgetting to replace it, and also to prevent the stain on the hands due to the developer.
（ａ） 一実施例の説明 第２図及び第３図は本発明の一実施例構成図，第４図
及び第５図は本発明の要部構成図である。(A) Description of one embodiment FIGS. 2 and 3 are configuration diagrams of one embodiment of the present invention, and FIGS. 4 and 5 are configuration diagrams of essential parts of the present invention.
図中，第１図及び第８図で示したものと同一のもの
は，同一の記号で示してある。In the figure, the same components as those shown in FIGS. 1 and 8 are designated by the same symbols.
第２図において,4aは現像剤供給カセットであり，新
たな二成分現像剤が収容され，現像剤供給シャッタ15上
にセットされるもの,4bは現像剤収容カセットであり，
現像容器10から排出された現像剤を収容するため，現像
剤排出シャッタ16の下にセットされるもの,10aは供給側
シャッタガイドであり，現像容器10に設けられ，現像剤
供給シャッタ15をスライド移動可能にガイドするもの,1
0bは排出側シャッタガイドであり，現像容器10に設けら
れ，現像剤排出シャッタ16をスライド移動可能にガイド
するものである。In FIG. 2, 4a is a developer supply cassette, which stores new two-component developer and is set on the developer supply shutter 15, 4b is a developer storage cassette,
In order to accommodate the developer discharged from the developing container 10, the developer is set under the developer discharging shutter 16, and 10a is a supply side shutter guide, which is provided in the developing container 10 and slides the developer supplying shutter 15. Movable guides, 1
Reference numeral 0b is a discharge-side shutter guide, which is provided in the developing container 10 and guides the developer discharge shutter 16 in a slidable manner.
従って，現像剤供給カセット4aと現像剤排出シャッタ
4bをセットしておけば，両シャッタ15,16の動作で自動
的に二成分現像剤の交換が行われる。Therefore, the developer supply cassette 4a and the developer discharge shutter
If 4b is set, the two-component developer is automatically replaced by the operation of both shutters 15 and 16.
第３図，第４図，第５図において，モータ35の回転は
歯車34c,34b,34aによって動作軸33に伝達され，動作軸3
3の上下には，各々位相が180度異る一対のカム32a,32b
が設けられている。In FIGS. 3, 4, and 5, the rotation of the motor 35 is transmitted to the operating shaft 33 by the gears 34c, 34b, 34a, and the operating shaft 3
Above and below 3, there are a pair of cams 32a, 32b whose phases are different by 180 degrees.
Is provided.
カム32aは，第４図に示す様に，カム溝320と，ホーム
ポジション用突起321が設けられており，支点C1を中心
に回動する第１のレバー31aの先端のカムフオロア310が
カム溝320に係合している。第１のレバー31aは，現像剤
供給シャッタ15に接続された第２のレバー30aに接続
し、カム32aの回転により，カム溝320に従って現像剤供
給シャッタ15を供給側ガイド10aに沿って直線運動させ
る。As shown in FIG. 4, the cam 32a is provided with a cam groove 320 and a home position protrusion 321. The cam follower 310 at the tip of the first lever 31a which rotates around the fulcrum C1 is formed in the cam groove 320. Is engaged with. The first lever 31a is connected to the second lever 30a connected to the developer supply shutter 15, and the rotation of the cam 32a causes the developer supply shutter 15 to linearly move along the supply side guide 10a according to the cam groove 320. Let
又，マイクロスイッチ36は，ホームポジション用突起
321により動作し，カム32aのホームポジション位置を検
出する。Also, the micro switch 36 is a projection for home position.
It operates by 321 and detects the home position of the cam 32a.
一方，カム32bは，第５図に示す様に，カム32aと位相
を180度異ならしてカム溝320が設けられ，支点C2を中心
に回動する第１のレバー31bの先端のカムフォロア310が
カム溝320に係合している。第１のレバー31bは，現像剤
排出シャッタ16に接続された第２のレバー30bに接続
し，カム32bの回転により，カム溝320に従って現像剤排
出シャッタ16を排出側ガイド10bに沿って直線運動させ
る。On the other hand, as shown in FIG. 5, the cam 32b is provided with a cam groove 320 which is 180 degrees out of phase with the cam 32a, and the cam follower 310 at the tip of the first lever 31b which rotates around the fulcrum C2 is provided. It is engaged with the cam groove 320. The first lever 31b is connected to the second lever 30b connected to the developer discharge shutter 16, and the rotation of the cam 32b causes the developer discharge shutter 16 to move linearly along the discharge side guide 10b according to the cam groove 320. Let
第６図及び第７図は本発明の一実施例動作説明図であ
る。FIG. 6 and FIG. 7 are explanatory views of the operation of one embodiment of the present invention.
第４図，第５図のカム32a,32bがホームポジション位
置にあるときは，第６図（Ａ）に示すように，第１のレ
バー31a,31bのカムフオロア310はカム32a,32bの凹部に
あり，現像剤供給シャッタ15及び現像剤排出シャッタ16
は閉状態にある。When the cams 32a, 32b of FIGS. 4 and 5 are at the home position, the cam follower 310 of the first lever 31a, 31b is placed in the recess of the cam 32a, 32b as shown in FIG. 6 (A). Yes, developer supply shutter 15 and developer discharge shutter 16
Is closed.
モータ35が回転し，動作軸33が時計方向に回転する
と，第６図（Ｂ）に示すように，第１のレバー31aはカ
ム32aの凹部に位置し，現像剤供給シャッタ15は閉状態
のままであるが，第１のレバー31bはカム32bの凸部に位
置し，支点C2を中心に時計方向に回動し，第２のレバー
30bを図の右方向に駆動し，現像剤排出シャッタ16を右
方向に移動せしめ，動作軸33が時計方向に90度回転する
と，現像剤排出シャッタ16の排出穴16aを現像剤排出口1
3に対向し，開状態にする。When the motor 35 rotates and the operating shaft 33 rotates clockwise, the first lever 31a is positioned in the concave portion of the cam 32a and the developer supply shutter 15 is closed as shown in FIG. 6 (B). However, the first lever 31b is located on the convex portion of the cam 32b, rotates clockwise about the fulcrum C2, and moves to the second lever 31b.
When 30b is driven to the right in the figure to move the developer discharge shutter 16 to the right and the operating shaft 33 rotates clockwise by 90 degrees, the discharge hole 16a of the developer discharge shutter 16 is moved to the developer discharge port 1
Face 3 and open.
これによって，現像容器10内の二成分現像剤は，現像
剤排出口13から現像剤収容カセット4bに落下し，排出さ
れる。As a result, the two-component developer in the developing container 10 drops from the developer discharge port 13 into the developer accommodating cassette 4b and is discharged.
更に，モータ35が回転し，動作軸33が時計方向に回転
すると，第７図（Ａ）に示すように，第１のレバー31a
はカム32aの凹部に位置し，現像剤供給シャッタ15は閉
状態のままであるが，第１のレバー31bはカム32bの凹部
に位置し，支点C2を中心に反時計方向に回動し，第２の
レバー30bを図の左方向に駆動し，現像剤排出シャッタ1
6を左方向に移動せしめ，動作軸33が時計方向に180度回
転すると，現像剤排出シャッタ16の排出穴16aが現像剤
排出口13から外れ，閉状態となる。When the motor 35 further rotates and the operating shaft 33 rotates clockwise, as shown in FIG. 7 (A), the first lever 31a
Is located in the recess of the cam 32a and the developer supply shutter 15 remains closed, but the first lever 31b is located in the recess of the cam 32b and rotates counterclockwise about the fulcrum C2. The second lever 30b is driven to the left in the figure, and the developer discharging shutter 1
When 6 is moved to the left and the operating shaft 33 is rotated clockwise by 180 degrees, the discharge hole 16a of the developer discharge shutter 16 is disengaged from the developer discharge port 13 and is closed.
更に，モータ35が回転し，動作軸33が時計方向に回転
すると，第７図（Ｂ）に示すように，第１のレバー31a
はカム32aの凸部に位置し，支点C1を中心に時計方向に
回動し，第２のレバー30aを図の右方向に駆動し，現像
剤供給シャッタ15を右方向に移動せしめ，動作軸33が時
計方向に270度回転すると，現像剤供給シャッタ15の供
給穴15aを現像剤供給口12に対向し，開状態にし，第１
のレバー31bはカム32bの凹部に位置し，現像剤排出シャ
ッタ16は閉状態のままとなる。Further, when the motor 35 rotates and the operating shaft 33 rotates clockwise, as shown in FIG. 7 (B), the first lever 31a
Is located on the convex portion of the cam 32a, rotates clockwise around the fulcrum C1, drives the second lever 30a to the right in the figure, moves the developer supply shutter 15 to the right, and moves the operation axis. When 33 rotates clockwise by 270 degrees, the supply hole 15a of the developer supply shutter 15 is opposed to the developer supply port 12 and is brought into the open state.
The lever 31b is located in the recess of the cam 32b, and the developer discharging shutter 16 remains closed.
これによって，現像容器10内に現像剤供給カセット4a
の二成分現像剤が落下し，現像容器10に二成分現像剤が
供給される。As a result, the developer supply cassette 4a is placed in the developing container 10.
The two-component developer of (3) falls and the two-component developer is supplied to the developing container 10.
更に，モータ35が回転し，動作軸33が時計方向に回転
すると，第１のレバー31aはカム32aの凹部に位置し，支
点C1を中心に反時計方向に回動し，第２のレバー30aを
図の左方向に駆動し，現像剤供給シャッタ15を左方向に
移動せしめ，動作軸33が時計方向に360度回転すると，
現像剤供給シャッタ15の供給穴15aが現像剤供給口12か
ら外れ，閉状態となり，第６図（Ａ）のホームポジショ
ンの状態にもどる。Further, when the motor 35 rotates and the operating shaft 33 rotates clockwise, the first lever 31a is located in the concave portion of the cam 32a and rotates counterclockwise around the fulcrum C1 to move the second lever 30a. Is driven to the left in the figure to move the developer supply shutter 15 to the left, and the operating shaft 33 rotates 360 degrees clockwise,
The supply hole 15a of the developer supply shutter 15 is disengaged from the developer supply port 12 to be in the closed state, and the home position shown in FIG. 6 (A) is restored.
このように，カム32a,32bの一回転で現像剤の排出，
供給がおこなわれる。In this way, the developer is discharged by one rotation of the cams 32a and 32b,
Supply is done.
図示しないマイクロプロセッサ等の制御回路は，図示
しないキーから現像剤交換指示を受けると，ホームポジ
ションからモータ35を回転させ，マイクロスイッチ36か
らのホームポジション検出信号を受けると，モータ35を
停止させる。A control circuit such as a microprocessor (not shown) rotates the motor 35 from the home position when receiving a developer replacement instruction from a key (not shown), and stops the motor 35 when receiving a home position detection signal from the micro switch 36.
この現像剤の排出，供給に各々所定時間（約30秒）か
かるため，現像剤供給シャッタ15及び現像剤排出シャッ
タ16の開状態が所定時間取れるように，モータ35を低速
回転させるか，歯車34a,34b,34cの減速比を設定する。Since it takes a predetermined time (about 30 seconds) to discharge and supply the developer, the motor 35 is rotated at a low speed or the gear 34a so that the developer supply shutter 15 and the developer discharge shutter 16 can be opened for a predetermined time. Set the reduction ratio of 34b, 34c.
このようにして，現像剤の自動交換が可能となる。 In this way, the developer can be automatically replaced.
（ｂ） 他の実施例の説明 上述の実施例の他に，本発明は次の変形が可能であ
る。(B) Description of Other Embodiments In addition to the above embodiments, the present invention can be modified as follows.
現像剤供給シャッタ15及び現像剤排出シャッタ16を
現像容器10に設けた例で説明したが，現像容器10と別体
に設けてもよく，現像剤供給カセット4a,現像剤収容カ
セット4bに設けてもよい。Although the developer supply shutter 15 and the developer discharge shutter 16 are provided in the developer container 10 as an example, they may be provided separately from the developer container 10 and provided in the developer supply cassette 4a and the developer accommodating cassette 4b. Good.
モータ35の連続回転により，シャッタ15,16の開閉
を行っているが，シャッタ15,16が開状態になるカム位
置にマイクロスイッチを設け，このマイクロスイッチの
検出信号により，モータ35を一時停止し，前述の所定時
間後モータ35を再回転させてもよい。Although the shutters 15 and 16 are opened and closed by the continuous rotation of the motor 35, a micro switch is provided at the cam position where the shutters 15 and 16 are in the open state, and the motor 35 is temporarily stopped by the detection signal of this micro switch. The motor 35 may be re-rotated after the above-mentioned predetermined time.
以上説明したように，本発明は次の効果を奏する。 As described above, the present invention has the following effects.
現像剤交換指示に応じて，現像剤排出シャッタ16を
開いた後，現像剤排出シャッタ16を閉じて，現像剤供給
シャッタ15を開き，現像剤供給シャッタ15を閉じるよう
に，現像剤排出シャッタ16及び現像剤供給シャッタ15を
駆動する開閉駆動部３を設けたので，現像剤の交換を自
動化でき，手動作業を要しないため，現像剤の交換に際
し，現像剤の飛散や現像剤の交換のし忘れを防止でき
る。In response to a developer replacement instruction, after opening the developer discharge shutter 16, the developer discharge shutter 16 is closed, the developer supply shutter 15 is opened, and the developer supply shutter 15 is closed. Also, since the opening / closing drive unit 3 for driving the developer supply shutter 15 is provided, the developer can be automatically replaced and no manual work is required. Therefore, when the developer is replaced, the developer is scattered or the developer is replaced. You can prevent forgetting.
現像剤の交換をユーザからの交換作業指示により自
動化できるため、複雑な手動作業を要せず、現像剤によ
る手の汚れも妨げるのみならず、ユーザが大量印刷前に
事前交換したいときに任意に交換することができる。Since the replacement of the developer can be automated according to the replacement work instruction from the user, complicated manual work is not required, not only does the hand of the developer be prevented from being soiled, but also when the user wants to replace it in advance before mass printing. Can be exchanged.
モータとカムとスライドレバーにより現像剤の交換
を実現できるので、簡単なメカニズムにより、ノイズ等
の発生によるプログラム暴走のおそれもない、安定な動
作の下で現像剤を交換することが、簡単にできる。Since the developer can be replaced by the motor, cam, and slide lever, the simple mechanism makes it easy to replace the developer under stable operation without the risk of program runaway due to noise. .
現像剤の交換のときに遂行される現像剤排出シャッ
タ開→現像剤排出→現像剤排出シャッタ閉→現像剤供給
シャッタ開→現像剤投入→現像剤供給シャッタ閉という
交換シーケンスを、複雑な制御手段を必要とせずに簡単
な機構により機械的に実施することが可能となる。A complicated control means is used for the replacement sequence of the developer discharging shutter opened → the developer discharging → the developer discharging shutter closing → the developer supplying shutter opening → the developer charging → the developer supplying shutter closing, which is executed when the developer is replaced. It is possible to carry out mechanically with a simple mechanism without requiring.
カム機構によりスライドされるのは現像剤供給シャ
ッタ及び現像剤排出シャッタであり、現像器をカム機構
により駆動する場合に比較して、カム機構駆動用のモー
タを非常に小型化できる。It is the developer supply shutter and the developer discharge shutter that are slid by the cam mechanism, and the motor for driving the cam mechanism can be made much smaller than when the developing device is driven by the cam mechanism.
第１図は本発明の原理図， 第２図及び第３図は本発明の一実施例構成図， 第４図は本発明の一実施例供給側の構成図， 第５図は本発明の一実施例排出側の構成図， 第６図及び第７図は本発明の一実施例動作説明図， 第８図は従来技術の説明図である。 図中,10……現像容器， 11……現像ローラ（現像剤搬送手段）， 12……現像剤供給口， 13……現像剤排出口， 15……現像剤供給シャッタ， 16……現像剤排出シャッタ， ３……開閉駆動部。 FIG. 1 is a principle diagram of the present invention, FIGS. 2 and 3 are configuration diagrams of one embodiment of the present invention, FIG. 4 is a configuration diagram of a supply side of one embodiment of the present invention, and FIG. FIG. 6 is a configuration diagram of the discharge side of one embodiment, FIG. 6 and FIG. 7 are operation explanatory diagrams of one embodiment of the present invention, and FIG. In the figure, 10 ... Developing container, 11 ... Developing roller (developer conveying means), 12 ... Developer supply port, 13 ... Developer discharge port, 15 ... Developer supply shutter, 16 ... Developer Ejection shutter, 3 ... Opening / closing drive unit.
Claims (1)
搬送手段を、上部に現像剤供給口を、下部に現像剤排出
口を備える現像容器と、 該現像剤供給口の開閉のための現像剤供給シャッタと、 該現像剤排出口の開閉のための現像剤排出シャッタとを
有し、 該現像剤排出シャッタを開いて、現像容器から現像剤を
排出した後、該現像剤供給シャッタを開いて、現像容器
に現像剤を供給し、現像剤の交換を行うようにした現像
装置において、 レバーによりスライドされるスライドシャッタで構成さ
れた現像剤供給シャッタと、 レバーによりスライドされるスライドシャッタで構成さ
れた現像剤排出シャッタと、 該現像剤供給シャッタをスライドするレバーと結合する
第１のカムと、 該現像剤排出シャッタをスライドするレバーと結合する
第２のカムと、 現像容器外の同一側部に配置された該第１のカムと第２
のカムを連結する動作軸と、 外部からの現像剤交換指示に応じて該動作軸を一定方向
へ回転させる駆動モータと、 該現像剤供給シャッタの上に設けられた現像剤供給カセ
ットと、 該現像剤排出シャッタの下に設けられた現像剤収容カセ
ットを具備し、 該駆動モータが駆動されて該動作軸が一定方向へ回転す
ることにより、第２のカムがレバーを介し該現像剤排出
シャッタを開き、該現像器内の現像剤が該現像剤排出口
から該現像剤収容カセット内へ落下した後に該現像剤排
出シャッタが閉じるようにスライド動作させ、それに引
続いて第１のカムがレバーを介して該現像剤供給シャッ
タを開き、該現像剤収容カセットから該現像供給口を通
じて該現像器内へ現像剤が供給された後に該現像剤供給
シャッタが閉じるようにスライド動作させることを特徴
とする現像装置。1. A developer transport means for transporting a developer to an image carrier, a developer container having a developer supply port at an upper part and a developer discharge port at a lower part, and an opening / closing of the developer supply port. And a developer discharge shutter for opening and closing the developer discharge port. The developer discharge shutter is opened to discharge the developer from the developing container, and then the developer supply shutter is opened. In a developing device in which the shutter is opened and the developer is supplied to the developing container to replace the developer, a developer supply shutter configured by a slide shutter that is slid by a lever and a slide that is slid by the lever. A developer discharging shutter configured by a shutter, a first cam coupled with a lever for sliding the developer supplying shutter, and a second cam coupling with a lever for sliding the developer discharging shutter. The second cam and the first cam and the second cam which are arranged on the same side outside the developing container.
An operation shaft that connects the cams of the above, a drive motor that rotates the operation shaft in a certain direction in response to a developer replacement instruction from the outside, a developer supply cassette provided on the developer supply shutter, A developer accommodating cassette provided below the developer discharging shutter is provided, and when the drive motor is driven to rotate the operation shaft in a certain direction, the second cam causes the second cam to operate through the lever. Open, and after the developer in the developing device has dropped from the developer discharge port into the developer accommodating cassette, the developer discharge shutter is slid so that the first cam moves to the lever. The developer supply shutter is opened via the, and after the developer is supplied from the developer accommodating cassette into the developing device through the development supply port, the developer supply shutter is slid so as to be closed. A developing device, characterized in that:
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2334162A JP2675916B2 (en) | 1990-11-30 | 1990-11-30 | Developing device |
| US08/364,419 US5450178A (en) | 1990-09-10 | 1994-12-27 | Process and apparatus for replacing the carrier portion of a developing agent having toner used in an image-forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2334162A JP2675916B2 (en) | 1990-11-30 | 1990-11-30 | Developing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04204678A JPH04204678A (en) | 1992-07-27 |
| JP2675916B2 true JP2675916B2 (en) | 1997-11-12 |
Family
ID=18274236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2334162A Expired - Fee Related JP2675916B2 (en) | 1990-09-10 | 1990-11-30 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2675916B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH07219339A (en) | 1994-01-31 | 1995-08-18 | Canon Inc | Elastic blade, manufacture thereof and developing device |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5349439A (en) * | 1976-10-18 | 1978-05-04 | Ricoh Co Ltd | Method for detecting and replacing degraded developer |
| JPS636466U (en) * | 1986-06-30 | 1988-01-16 | ||
| JP2683294B2 (en) * | 1990-06-01 | 1997-11-26 | シャープ株式会社 | Developer recovery device of developing device |
-
1990
- 1990-11-30 JP JP2334162A patent/JP2675916B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04204678A (en) | 1992-07-27 |
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| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |