JPS6373769U - - Google Patents
Info
- Publication number
- JPS6373769U JPS6373769U JP16508686U JP16508686U JPS6373769U JP S6373769 U JPS6373769 U JP S6373769U JP 16508686 U JP16508686 U JP 16508686U JP 16508686 U JP16508686 U JP 16508686U JP S6373769 U JPS6373769 U JP S6373769U
- Authority
- JP
- Japan
- Prior art keywords
- sensor
- density
- contamination
- toner density
- developing
- 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
- 238000011109 contamination Methods 0.000 claims 2
- 108091008695 photoreceptors Proteins 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000013481 data capture Methods 0.000 description 2
Landscapes
- Dry Development In Electrophotography (AREA)
Description
第1図は本考案の一実施例のセンサ汚れ補償の
回路図、第2図はセンサ汚れ補償用データ取り込
みとトナー濃度データ取り込みのタイミングの説
明図、第3図は従来の一般的な電子写真式複写装
置の原理説明図、第4図は従来のトナー濃度制御
の回路図である。
17…センサ。
Fig. 1 is a circuit diagram of sensor dirt compensation according to an embodiment of the present invention, Fig. 2 is an explanatory diagram of the timing of sensor dirt compensation data capture and toner density data capture, and Fig. 3 is a conventional general electronic photograph. FIG. 4, which is a diagram explaining the principle of a type copying apparatus, is a circuit diagram of a conventional toner density control. 17...Sensor.
Claims (1)
パツチ画像の濃度をセンサで検知して、トナー濃
度を制御するように構成したトナー濃度制御装置
において、 上記センサの汚れに応じて該センサの発光素子
の電源電圧を制御する手段、及び該電圧が限界に
達すると外部に信号を出力する手段を有すること
を特徴とするセンサの汚れ補償装置。[Scope of Claim for Utility Model Registration] A toner density control device configured to control toner density by detecting the density of a patch image obtained by developing an image on a reference density plate onto a photoreceptor drum surface with a sensor, A contamination compensating device for a sensor, comprising means for controlling a power supply voltage of a light emitting element of the sensor according to contamination, and means for outputting a signal to the outside when the voltage reaches a limit.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16508686U JPS6373769U (en) | 1986-10-29 | 1986-10-29 | |
US07/114,106 US4801980A (en) | 1986-10-29 | 1987-10-28 | Toner density control apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16508686U JPS6373769U (en) | 1986-10-29 | 1986-10-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6373769U true JPS6373769U (en) | 1988-05-17 |
Family
ID=31094801
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16508686U Pending JPS6373769U (en) | 1986-10-29 | 1986-10-29 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6373769U (en) |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5565976A (en) * | 1978-11-11 | 1980-05-17 | Ricoh Co Ltd | Toner concentration control unit of recorder |
JPS56164355A (en) * | 1980-05-22 | 1981-12-17 | Fuji Xerox Co Ltd | Image density detector of electrophotographic copying machine |
JPS58126557A (en) * | 1982-01-22 | 1983-07-28 | Fuji Xerox Co Ltd | Adjusting device of toner density |
JPS58182650A (en) * | 1982-04-20 | 1983-10-25 | Ricoh Co Ltd | Method for adjusting control device for image density of electrophotographic copying machine |
JPS61148463A (en) * | 1984-12-24 | 1986-07-07 | Fuji Xerox Co Ltd | Automatic image density controller of dry electrophotographic copying machine |
-
1986
- 1986-10-29 JP JP16508686U patent/JPS6373769U/ja active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5565976A (en) * | 1978-11-11 | 1980-05-17 | Ricoh Co Ltd | Toner concentration control unit of recorder |
JPS56164355A (en) * | 1980-05-22 | 1981-12-17 | Fuji Xerox Co Ltd | Image density detector of electrophotographic copying machine |
JPS58126557A (en) * | 1982-01-22 | 1983-07-28 | Fuji Xerox Co Ltd | Adjusting device of toner density |
JPS58182650A (en) * | 1982-04-20 | 1983-10-25 | Ricoh Co Ltd | Method for adjusting control device for image density of electrophotographic copying machine |
JPS61148463A (en) * | 1984-12-24 | 1986-07-07 | Fuji Xerox Co Ltd | Automatic image density controller of dry electrophotographic copying machine |
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