JPH0283563A - Developing device - Google Patents
Developing deviceInfo
- Publication number
- JPH0283563A JPH0283563A JP23680688A JP23680688A JPH0283563A JP H0283563 A JPH0283563 A JP H0283563A JP 23680688 A JP23680688 A JP 23680688A JP 23680688 A JP23680688 A JP 23680688A JP H0283563 A JPH0283563 A JP H0283563A
- Authority
- JP
- Japan
- Prior art keywords
- doctor blade
- gap
- developer carrier
- developer
- tip
- 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
- 230000032258 transport Effects 0.000 claims description 2
- 230000000694 effects Effects 0.000 description 3
- 230000003287 optical effect Effects 0.000 description 1
Abstract
Description
【発明の詳細な説明】 〔産業上の利用分野〕 本発明は、電子写真装置の現像装置に関する。[Detailed description of the invention] [Industrial application field] The present invention relates to a developing device for an electrophotographic apparatus.
従来のかかる現像装置の、現像剤担持体とドクターブレ
ードのギャップは、スキマゲージ、あるいは光学的測定
装置などを用い測定しながら調整し固定していたものが
多かったが、上述のような方法では、組立てに熟練と時
間を要し、また、調整後の運送時などの衝撃によりギャ
ップが狂うという可能性もあった。In conventional developing devices, the gap between the developer carrier and the doctor blade was often adjusted and fixed while being measured using a feeler gauge or an optical measuring device. , assembly required skill and time, and there was also the possibility that the gap could become erroneous due to impact during transportation after adjustment.
本発明は上記の事件に鑑みなされたものでありその目的
は、ドクターブレード先端と現像担持体のギャップを無
調整で組立てることができ、また、現像装置に運送時な
どに衝撃がかかった場合でもドクターブレード先端と現
像担持体のギャップは設定どおりに確保されている電子
写真装置の現像装置を提供することである。The present invention was developed in view of the above-mentioned incident, and its purpose is to enable assembly of the gap between the tip of the doctor blade and the developer carrier without adjusting the gap, and to enable the assembly even if the developing device is subjected to impact during transportation. It is an object of the present invention to provide a developing device for an electrophotographic apparatus in which the gap between the tip of a doctor blade and a developing carrier is maintained as set.
本発明の現像装置は現像剤を担持して搬送する現像剤担
持体と、前記現像担持体に担持された現像剤を一定厚み
に整えるためのドクターブレードと前記ドクターブレー
ド先端と係合し、前記現像担持体とドクターブレード先
端のギャップを確保する前記現像担持体回転軸に取り付
けられた軸受とにより構成されたことを特徴とする。The developing device of the present invention includes a developer carrier that supports and transports developer, a doctor blade for adjusting the developer carried on the developer carrier to a constant thickness, and a tip of the doctor blade that engages with the doctor blade. It is characterized in that it is constituted by a developer carrier and a bearing attached to the developer carrier rotating shaft to ensure a gap between the tip of the doctor blade.
以下図を参照して本発明の詳細な説明する。 The present invention will be described in detail below with reference to the drawings.
第１図は、現像装置の断面形状を示したものである。現
像装置本体内に納められた現像剤５は、現像剤担持体２
によって潜像担持体３に搬送される。その時、ドクター
ブレード１によって現像剤担持体２上の現像剤５の厚み
が一定になるように整えられる。よってドクターブレー
ド先端と現像剤担持体のギャップは十分調整されてなけ
ればならない。FIG. 1 shows the cross-sectional shape of the developing device. The developer 5 housed in the developing device main body is transferred to the developer carrier 2.
The image is conveyed to the latent image carrier 3 by. At this time, the doctor blade 1 adjusts the thickness of the developer 5 on the developer carrier 2 to be constant. Therefore, the gap between the tip of the doctor blade and the developer carrier must be sufficiently adjusted.
第２図は上述の部分を上部から見た図である。FIG. 2 is a top view of the above-mentioned part.
上記ドクターブレードｌは、バネ６により、現像剤担持
体２の回転軸に取りつけられた軸受４におしつけられる
ようになっており、軸受４の外径と現像剤担持体２の直
径の差の士、すなわちドクターギャップをいかなる場合
においても確保することとなる。The doctor blade l is forced onto a bearing 4 attached to the rotating shaft of the developer carrier 2 by a spring 6, and is adapted to measure the difference between the outer diameter of the bearing 4 and the diameter of the developer carrier 2. In other words, the doctor gap is ensured in any case.
またバネ６がなく、ドクターブレード１を直接本体にね
じなどにより固定する場合においても、ドクターブレー
ド１の先端を軸受４におしつけながら固定すれば、設定
したドクターギャップを確保しながら固定することがで
きる。Furthermore, even if there is no spring 6 and the doctor blade 1 is directly fixed to the main body with screws, etc., if the tip of the doctor blade 1 is pressed against the bearing 4 while being fixed, it can be fixed while ensuring the set doctor gap. .
以上述べたように発明によれば、現像担持体２及び軸受
４の精度を確保することにより、 ドクターブレード先
端と現像剤担持体２のギャップすなわちドクターギャッ
プは無調整で設定どおりのものが得られ、また、バネ６
によりいつも一定圧でおさえられているので調整後狂う
ということはまったくないという効果を有する。As described above, according to the invention, by ensuring the accuracy of the developer carrier 2 and the bearing 4, the gap between the tip of the doctor blade and the developer carrier 2, that is, the doctor gap, can be obtained as set without any adjustment. , also spring 6
Since the pressure is always maintained at a constant level, it has the effect that there is no possibility that the pressure will go out of order after adjustment.
もちろん、バネを使用せずに直接本体にドクターブレー
ドを固定するという方法をとった場合においても、調整
が不用となるという十分な効果を有することは明らかで
ある。Of course, it is clear that even if the doctor blade is directly fixed to the main body without using a spring, there is a sufficient effect that no adjustment is required.
第１図は本発明の現像装置の断面図。 第２図は、同じく平面図。 １・・・ドクターブレード ２・・・現像剤担持体 ３・・・潜像担持体 ４・・・軸受 ５・・・現像剤 ６・・・バネ 以 上 出願人 セイコーエプソン株式会社 FIG. 1 is a sectional view of the developing device of the present invention. FIG. 2 is also a plan view. 1...Doctor Blade 2...Developer carrier 3...Latent image carrier 4...Bearing 5...Developer 6...Spring that's all Applicant: Seiko Epson Corporation
Claims (1)
持体に担持された現像剤を一定厚みに整えるためのドク
ターブレードと前記ドクターブレード先端と係合し、前
記現像担持体とドクターブレード先端のギャップを確保
する前記現像担持体回転軸に取り付けられた軸受とによ
り構成されたことを特徴とする現像装置。A developer carrier that supports and transports developer; a doctor blade that adjusts the developer carried on the developer carrier to a constant thickness; and a doctor blade that engages with the tip of the doctor blade; 1. A developing device comprising: a bearing attached to the rotating shaft of the developer carrier to ensure a gap at the leading end;
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23680688A JPH0283563A (en) | 1988-09-21 | 1988-09-21 | Developing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23680688A JPH0283563A (en) | 1988-09-21 | 1988-09-21 | Developing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0283563A true JPH0283563A (en) | 1990-03-23 |
Family
ID=17006060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23680688A Pending JPH0283563A (en) | 1988-09-21 | 1988-09-21 | Developing device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0283563A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112053A1 (en) * | 1990-04-13 | 1991-10-17 | Asahi Optical Co Ltd | METHOD FOR ADJUSTING A SLOT IN THE DEVELOPMENT DEVICE OF AN ELECTROPHOTOGRAPHIC PRINTER |
| US5259866A (en) * | 1990-10-23 | 1993-11-09 | Japan Metals & Chemicals Co., Ltd. | Method for producing high-purity metallic chromium |
| US8095051B2 (en) * | 2007-09-19 | 2012-01-10 | Canon Kabushiki Kaisha | Image forming apparatus which achieves stability of a gap between an image bearing member and developer bearing member |
-
1988
- 1988-09-21 JP JP23680688A patent/JPH0283563A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4112053A1 (en) * | 1990-04-13 | 1991-10-17 | Asahi Optical Co Ltd | METHOD FOR ADJUSTING A SLOT IN THE DEVELOPMENT DEVICE OF AN ELECTROPHOTOGRAPHIC PRINTER |
| DE4112053C2 (en) * | 1990-04-13 | 1993-12-02 | Asahi Optical Co Ltd | Method for setting a coating gap in the developing device of an electrophotographic printer |
| US5259866A (en) * | 1990-10-23 | 1993-11-09 | Japan Metals & Chemicals Co., Ltd. | Method for producing high-purity metallic chromium |
| US8095051B2 (en) * | 2007-09-19 | 2012-01-10 | Canon Kabushiki Kaisha | Image forming apparatus which achieves stability of a gap between an image bearing member and developer bearing member |
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