JPS5852593B2 - Cleaning method for electrophotographic cleaning equipment - Google Patents
Cleaning method for electrophotographic cleaning equipmentInfo
- Publication number
- JPS5852593B2 JPS5852593B2 JP11593576A JP11593576A JPS5852593B2 JP S5852593 B2 JPS5852593 B2 JP S5852593B2 JP 11593576 A JP11593576 A JP 11593576A JP 11593576 A JP11593576 A JP 11593576A JP S5852593 B2 JPS5852593 B2 JP S5852593B2
- Authority
- JP
- Japan
- Prior art keywords
- blade
- photoreceptor
- cleaning
- toner
- state
- 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
Description
【発明の詳細な説明】
本発明は、電子写真クリーニング装置におけるクリーニ
ング方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cleaning method for an electrophotographic cleaning apparatus.
電子複写機において、転写を終えた後の感光体表面に残
留するトナーを、感光体に圧接したブレードによりクリ
ーニングするクリーニング方法は周知である。2. Description of the Related Art In an electronic copying machine, a cleaning method is well known in which toner remaining on the surface of a photoreceptor after transfer is cleaned using a blade pressed against the photoreceptor.
この種のクリーニング方法は各種形式のものが知られて
いるが、感光体に対するブレードの作用点を、ブレード
の支点よりも、感光体の移動方向における前方（トレー
リング方向）に位置せしめたものにおいては、感光体に
当接するブレードの面積が小さいため、この当接部分が
感光体との当接圧力により変形し、この変形部分にクリ
ーニングされたトナーが堆積し、この堆積トナーは、感
光体が停止した際に感光体表面に直線状に残留する傾向
がある。Various types of cleaning methods of this kind are known, but one in which the point of action of the blade on the photoconductor is located ahead of the fulcrum of the blade in the direction of movement of the photoconductor (trailing direction) Since the area of the blade that contacts the photoreceptor is small, this contact area is deformed by the contact pressure with the photoreceptor, and the cleaned toner is deposited on this deformed area, and this accumulated toner is absorbed by the photoreceptor. When the photoreceptor is stopped, it tends to remain in a straight line on the surface of the photoreceptor.
堆積トナーが感光体表面に残留すれば、これが感光体上
に固着し複写機能が低下するとともに、これが次の転写
紙に転写され、コピー品質を著しく低下させることにな
る。If the accumulated toner remains on the surface of the photoreceptor, it will stick to the photoreceptor, deteriorating the copying function, and will also be transferred to the next transfer paper, significantly reducing copy quality.
本発明は、上記従来の欠点を除去した電子写真クリーニ
ング装置におけるクリーニング方法を提供しようとする
ものであり、以下に本発明の実施例を図面に従って説明
する。The present invention aims to provide a cleaning method for an electrophotographic cleaning apparatus that eliminates the above-mentioned conventional drawbacks, and embodiments of the present invention will be described below with reference to the drawings.
第１図においてドラムとして構成され、矢印方向に回転
可能な感光体１にはクリーニング用のブレード２が圧接
され、このブレードは、公知の如く、例えばゴムの如き
弾性材料より成る。In FIG. 1, a cleaning blade 2 is pressed against a photoreceptor 1, which is constructed as a drum and is rotatable in the direction of the arrow, and is made of an elastic material such as rubber, as is known in the art.
この場合、感光体１に対するブレードの作用点Ｐは、Ｑ
で略示したブレードの支点よりも、感光体１の移動方向
（矢印方向）に対して前方、すなわちトレーリング方向
に位置している。In this case, the point of action P of the blade on the photoreceptor 1 is Q
It is located in front of the fulcrum of the blade, which is schematically shown in , with respect to the moving direction (arrow direction) of the photoreceptor 1, that is, in the trailing direction.
この形式のクリーニング方式では、ブレード２のエツジ
部３が感光体１に当接し、従って感光体１に対するブレ
ード２０当接面積は小さい。In this type of cleaning method, the edge portion 3 of the blade 2 comes into contact with the photoreceptor 1, and therefore the contact area of the blade 20 with respect to the photoreceptor 1 is small.
しかも、ブレード２は、その充分なりリーニング作用が
得られるように、比較的大きな力で感光体に圧接されて
いるため、上記エツジ部３は、第１図に示す如くわずか
に変形する。Moreover, since the blade 2 is pressed against the photoreceptor with a relatively large force so as to obtain a sufficient leaning action, the edge portion 3 is slightly deformed as shown in FIG.
公知の如く、感光体１０表面にはトナー像が形式され、
これが感光体１０回転（矢印方向）に伴って、図示して
いない転写部に至ると、上記トナー像は転写紙に転写さ
れるが、このとき感光体表面にわずかなトナーが残留す
ることは避けられない。As is well known, a toner image is formed on the surface of the photoreceptor 10,
When the photoconductor rotates 10 times (in the direction of the arrow) and reaches a transfer section (not shown), the toner image is transferred to the transfer paper, but at this time, it is avoided that a small amount of toner remains on the surface of the photoconductor. I can't do it.
この残留トナーは、感光体の回転に伴って、ブレード２
の位置に至ると、該ブレードによって掻き集められる。This residual toner is removed from the blade 2 as the photoreceptor rotates.
When it reaches the position, it is raked up by the blade.
このようにして掻き集められたトナー４は、例えば図示
していないブロアーによって吸引されるが、ブレードエ
ツジ部３の上記変形個所に入り込んだトナー４ａは、ブ
レードにより比較的強い圧力で押圧されているため、上
記ブロアーでは吸引することができず、これがブレード
エツジ部３に堆積する。The toner 4 scraped up in this manner is sucked by, for example, a blower (not shown), but the toner 4a that has entered the deformed portion of the blade edge portion 3 is pressed by the blade with relatively strong pressure. , the above-mentioned blower cannot suck it, and it accumulates on the blade edge portion 3.
本発明においては、この堆積トナーを清掃スるため、複
写動作を終了し感光体上の残留トナーを拭掃し終えた後
、感光体を回転させたまま、ブレード２の圧接力を弱め
るように構成されている（第２図）。In the present invention, in order to clean this accumulated toner, after the copying operation is finished and the residual toner on the photoreceptor is wiped off, the pressure of the blade 2 is weakened while the photoreceptor remains rotating. (Figure 2).
このようにしてブレードの圧接力が弱められると、第２
図に矢印Ｒで示す如く、堆積トナー４ａは、ブレードの
エツジ部から徐々に感光体上に洩れ出て、感光体上には
ｇ均一に分散される。When the pressure contact force of the blade is weakened in this way, the second
As shown by arrow R in the figure, the accumulated toner 4a gradually leaks onto the photoreceptor from the edge of the blade and is uniformly dispersed on the photoreceptor.
ブレードのエツジ部に堆積するトナー４ａは、量として
はわずかであるため、これが感光体表面に分散されても
、これが次の転写紙を汚すようなことはほとんどなく、
また分散されたトナーはこれが現像部に至ると、この現
像部で除去され（乾式電子複写機では例えば現像ブラシ
により湿式電子複写機では電極により）、従って分散ト
ナーによって不都合が生ずることはｆ、Ｈい。The amount of toner 4a deposited on the edge of the blade is small, so even if it is dispersed on the surface of the photoreceptor, it hardly stains the next transfer paper.
Further, when the dispersed toner reaches the developing section, it is removed at the developing section (for example, by a developing brush in a dry type electronic copying machine, or by an electrode in a wet type electronic copying machine), and therefore, it is unlikely that the dispersed toner will cause any inconvenience. stomach.
ブレードのエツジ部に堆積したトナー４ａを全て分散し
終えればブレードの圧接力を再び強くしてブレードをク
リーニング状態（第１図）にすることができるが、圧接
力の弱い状態を次の複写動作開始まで維持するようにす
れば、ブレードの永久変形を防止できる利点も得られ特
に都合がよい。Once all the toner 4a that has accumulated on the edge of the blade has been dispersed, the pressure of the blade can be increased again to bring it into the cleaning state (Fig. 1). It is particularly convenient to maintain the blade until the start of operation, since this also has the advantage of preventing permanent deformation of the blade.
第３図は、ブレードの圧接力を弱める代りに、ブレード
２の傾斜角度を変えて堆積トナーを感光体１上に分散さ
せるようにした実施例を示す。FIG. 3 shows an embodiment in which the inclination angle of the blade 2 is changed to disperse the accumulated toner onto the photoreceptor 1 instead of weakening the pressure contact force of the blade.
この実施例の場合も、先の実施例と同様に堆積トナーを
支障なく除去することができる。In this embodiment as well, the accumulated toner can be removed without any problem as in the previous embodiment.
尚、上記２つの実施例における如く、ブレードの圧力を
変え又は傾斜角度を変えるようにする具体的な機構は、
当業者であれば適宜種々構成できるためその詳細な説明
は省略する。In addition, as in the above two embodiments, the specific mechanism for changing the pressure of the blade or changing the inclination angle is as follows.
Those skilled in the art can appropriately configure various configurations, so detailed explanation thereof will be omitted.
本発明はドラム形式の感光体に対してのみならず、平板
状の感光体に対しても適用できることは当然である。It goes without saying that the present invention can be applied not only to a drum-type photoreceptor but also to a flat photoreceptor.
以上の通り、本発明によれば簡単な構成によって、ブレ
ードに堆積するトナーを除去でき、しかも、フレードの
永久変形を防止できる効果も得られる。As described above, according to the present invention, toner deposited on the blade can be removed with a simple configuration, and the effect of preventing permanent deformation of the blade can also be obtained.
第１図はブレードにより残留トナーを拭掃する状態を示
す説明図、第２図はブレードの圧接力を弱めトナーを分
散させる状態を示す説明図、第３図はブレードの傾斜角
を変えてトナーを分散させる状態を示す説明図である。
１・・・・・・感光体、２・・・・・・ブレード、４ａ
・・・・・・トナー、Ｐ・・・・・・作用点、Ｑ・・・
・・・支点、３・・・・・・エツジ部。Figure 1 is an explanatory diagram showing a state in which residual toner is wiped away by a blade, Figure 2 is an explanatory diagram showing a state in which the pressure contact force of the blade is weakened and toner is dispersed, and Figure 3 is an explanatory diagram showing a state in which toner is dispersed by changing the inclination angle of the blade. FIG. 3 is an explanatory diagram showing a state in which the 1...Photoreceptor, 2...Blade, 4a
... Toner, P ... Point of action, Q ...
...Fully point, 3...Edge part.
Claims (1)
点よりも、感光体移動方向における前方に位置せしめた
電子写真クリーニング装置におけるクリーニング方法に
おいて、ブレードによるクリニング動作終了後、感光体
に対するブレードの当接状態を、クリーニング不良状態
とし、この状態のブレードと、移動する感光体との協働
作用によって、ブレードエツジ部に堆積したトナーを感
光体上に分散させることを特徴とする前記クリーニング
方法。1. In a cleaning method for an electrophotographic cleaning device in which the point of action of the blade on the photoconductor is located ahead of the fulcrum of the blade in the direction of movement of the photoconductor, the state of contact of the blade against the photoconductor after the cleaning operation by the blade is completed. The cleaning method is characterized in that the blade in this state is in a poor cleaning state, and the toner accumulated on the blade edge is dispersed onto the photoreceptor by the cooperative action of the blade in this state and the moving photoreceptor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11593576A JPS5852593B2 (en) | 1976-09-29 | 1976-09-29 | Cleaning method for electrophotographic cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11593576A JPS5852593B2 (en) | 1976-09-29 | 1976-09-29 | Cleaning method for electrophotographic cleaning equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5342034A JPS5342034A (en) | 1978-04-17 |
| JPS5852593B2 true JPS5852593B2 (en) | 1983-11-24 |
Family
ID=14674817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11593576A Expired JPS5852593B2 (en) | 1976-09-29 | 1976-09-29 | Cleaning method for electrophotographic cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5852593B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0481195U (en) * | 1990-11-27 | 1992-07-15 |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5713471A (en) * | 1980-06-27 | 1982-01-23 | Canon Inc | Electrophotography device |
| JPH02126943A (en) * | 1988-11-06 | 1990-05-15 | Kotobuki Kogyo Kk | Method for regenerating ion-exchange resin of mixed-bed deionizer |
| JP5186437B2 (en) * | 2009-05-18 | 2013-04-17 | 京セラドキュメントソリューションズ株式会社 | Image forming apparatus |
-
1976
- 1976-09-29 JP JP11593576A patent/JPS5852593B2/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0481195U (en) * | 1990-11-27 | 1992-07-15 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5342034A (en) | 1978-04-17 |
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