JPH0333450U - - Google Patents
Info
- Publication number
- JPH0333450U JPH0333450U JP9402289U JP9402289U JPH0333450U JP H0333450 U JPH0333450 U JP H0333450U JP 9402289 U JP9402289 U JP 9402289U JP 9402289 U JP9402289 U JP 9402289U JP H0333450 U JPH0333450 U JP H0333450U
- Authority
- JP
- Japan
- Prior art keywords
- potential
- cleaning
- cleaning brush
- toner
- constant current
- 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
- 238000004140 cleaning Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 4
- 108091008695 photoreceptors Proteins 0.000 description 3
- 238000010586 diagram Methods 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000002516 radical scavenger Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Cleaning In Electrography (AREA)
Description
第１図は本考案の一実施例を組込んだ電子写真
方式の複写機の、主に機構部の構成を示す側面図
である。第２図は第１図に示す複写機の電気系統
の構成概要を示すブロツク図である。第３図は第
２図に示すマイクロプロセツサ２１０の、クリー
ニング処理動作を示すフローチヤートである。第
４図は、第１図に示す感光体ベルト７の、クリー
ニング用除電電位と感光体表面クリーニグに適し
たクリーニング電界との関係を示すグラフである
。
１……コンタクトガラス板、２……照明灯、３
，４，６……ミラー、５……レンズユニツト、７
……感光体（画像形成媒体）、８……メインチヤ
ージヤ、８Ｇ……グリツド電極、１０……イレー
サ、１１……現像器、１２１〜１２３……現像ブ
ラシ、１３……アジテータ、１４……搬送ブラシ
、１５Ｆ……Ｆセンサ、１６……トナー槽、１７
……トナー供給ローラ、１８Ｐ……Ｐセンサ、１
９〜２３……トレイ、２４……レジストローラ、
２５……転写・分離チヤージヤ、２６……定着器
、２７……排紙トレイ、２９……除電チヤージヤ
、３０……指示スイツチ、３１……画像パターン
票、３２……レバー、５０……クリーニングユニ
ツト、５５……クリーニングブラシ（クリーニン
グブラシ）、５８……スカベンジヤローラ、６１
………トナ排出オーガ、４２０ｐ……表面電位計
、５ａ……現像バイアス電極、ＰＵ２０……定電
流回路（定電流バイアス回路）、ＶＤ２０……電
気検出回路（電位検出手段）、２１０……マイク
ロプロセツサ（バイアス電流制御手段）。
FIG. 1 is a side view mainly showing the structure of the mechanical parts of an electrophotographic copying machine incorporating an embodiment of the present invention. FIG. 2 is a block diagram showing a general configuration of the electrical system of the copying machine shown in FIG. 1. FIG. 3 is a flowchart showing the cleaning processing operation of the microprocessor 210 shown in FIG. FIG. 4 is a graph showing the relationship between the cleaning potential of the photoreceptor belt 7 shown in FIG. 1 and the cleaning electric field suitable for cleaning the photoreceptor surface. 1...Contact glass plate, 2...Lighting light, 3
, 4, 6...mirror, 5...lens unit, 7
... Photoreceptor (image forming medium), 8 ... Main charger, 8G ... Grid electrode, 10 ... Eraser, 11 ... Developer, 12 1 - 12 3 ... Development brush, 13 ... Agitator, 14 ...Conveyance brush, 15F...F sensor, 16...Toner tank, 17
...Toner supply roller, 18P...P sensor, 1
9-23...Tray, 24...Registration roller,
25... Transfer/separation charger, 26... Fixing device, 27... Paper discharge tray, 29... Static elimination charger, 30... Instruction switch, 31... Image pattern chart, 32... Lever, 50... Cleaning unit , 55... Cleaning brush (cleaning brush), 58... Scavenger roller, 61
...... Toner discharge auger, 420p ... Surface electrometer, 5a ... Developing bias electrode, PU20 ... Constant current circuit (constant current bias circuit), VD20 ... Electricity detection circuit (potential detection means), 210 ... Micro Processor (bias current control means).
Claims (1)
ブラシ； 該クリーニングブラシにトナー吸引電位を与え
るための定電流バイアス回路； 前記クリーニングブラシの電位を検出する電位
検出手段；および、 該電位検出手段が検出した電位に対応して、そ
れが低いときには前記定電流バイアス回路の出力
電流を高く、高いときには低く定めるバイアス電
流制御手段； を備えるクリーニング装置。[Claims for Utility Model Registration] A cleaning brush for cleaning toner from an image forming medium; A constant current bias circuit for applying a toner attraction potential to the cleaning brush; Potential detection means for detecting the potential of the cleaning brush; and A cleaning device comprising: bias current control means for setting the output current of the constant current bias circuit to be high when the potential is low and low when the potential is high, in response to the potential detected by the potential detection means.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9402289U JPH0333450U (en) | 1989-08-10 | 1989-08-10 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9402289U JPH0333450U (en) | 1989-08-10 | 1989-08-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0333450U true JPH0333450U (en) | 1991-04-02 |
Family
ID=31643363
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9402289U Pending JPH0333450U (en) | 1989-08-10 | 1989-08-10 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0333450U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031996A (en) * | 2000-05-10 | 2002-01-31 | Konica Corp | Cleaner and image forming device |
-
1989
- 1989-08-10 JP JP9402289U patent/JPH0333450U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002031996A (en) * | 2000-05-10 | 2002-01-31 | Konica Corp | Cleaner and image forming device |
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