JPS5589885A - Photoreceptor replacing method - Google Patents
Photoreceptor replacing methodInfo
- Publication number
- JPS5589885A JPS5589885A JP16170578A JP16170578A JPS5589885A JP S5589885 A JPS5589885 A JP S5589885A JP 16170578 A JP16170578 A JP 16170578A JP 16170578 A JP16170578 A JP 16170578A JP S5589885 A JPS5589885 A JP S5589885A
- Authority
- JP
- Japan
- Prior art keywords
- opc
- surface potential
- degree
- comparator
- deterioration
- 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.)
- Granted
Links
Landscapes
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE:To decide the degree of deterioration of the photosensitive body and replace rationally, by measuring the surface potential of the photosensitive body under certain conditions and comparing with the reference value. CONSTITUTION:The surface potential of the part of the original exposed before a developing part 5 on a photosensitive drum 1, or the surface potential of the erased part after erasing is measured. This surface electrometer consists of a detector 8 and a surface potential detecting circuit 9, and the output thereof is compared with the reference voltage from a reference voltage source 11 in a comparator 10, so that the degree of deteioration of organic photoconductor OPC may be judged. A timer circuit 12 is triggered by the output signal from the comparator 10 when the degree of deterioration of OPC reaches the allowable limit, and an OPC winding- up motor 13 is operated for a specified time to wind up an OPC sheet 2, thus replacing the used part thereof.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16170578A JPS5589885A (en) | 1978-12-28 | 1978-12-28 | Photoreceptor replacing method |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16170578A JPS5589885A (en) | 1978-12-28 | 1978-12-28 | Photoreceptor replacing method |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5589885A true JPS5589885A (en) | 1980-07-07 |
JPS641787B2 JPS641787B2 (en) | 1989-01-12 |
Family
ID=15740301
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16170578A Granted JPS5589885A (en) | 1978-12-28 | 1978-12-28 | Photoreceptor replacing method |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5589885A (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63133166A (en) * | 1986-11-26 | 1988-06-04 | Ricoh Co Ltd | Photosensitive unit with life expiration detecting function |
JPH01102579A (en) * | 1987-10-16 | 1989-04-20 | Canon Inc | Corona discharge device |
EP0334287A2 (en) * | 1988-03-22 | 1989-09-27 | Hitachi, Ltd. | Electrostatic recording apparatus |
JPH1049007A (en) * | 1997-05-12 | 1998-02-20 | Hitachi Ltd | Electrostatic recording system |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0443037A (en) * | 1990-06-08 | 1992-02-13 | Yoshifumi Murakami | Dust collector for printer |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934841A (en) * | 1972-07-31 | 1974-03-30 | ||
JPS5077046A (en) * | 1974-08-02 | 1975-06-24 | ||
JPS5293030A (en) * | 1976-01-29 | 1977-08-05 | Nissan Motor Co Ltd | Fluid pressure operation systems for drive control of car |
JPS53138733A (en) * | 1977-05-10 | 1978-12-04 | Ricoh Co Ltd | Control method for image quality of electrophotographic copier |
-
1978
- 1978-12-28 JP JP16170578A patent/JPS5589885A/en active Granted
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS4934841A (en) * | 1972-07-31 | 1974-03-30 | ||
JPS5077046A (en) * | 1974-08-02 | 1975-06-24 | ||
JPS5293030A (en) * | 1976-01-29 | 1977-08-05 | Nissan Motor Co Ltd | Fluid pressure operation systems for drive control of car |
JPS53138733A (en) * | 1977-05-10 | 1978-12-04 | Ricoh Co Ltd | Control method for image quality of electrophotographic copier |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS63133166A (en) * | 1986-11-26 | 1988-06-04 | Ricoh Co Ltd | Photosensitive unit with life expiration detecting function |
JPH01102579A (en) * | 1987-10-16 | 1989-04-20 | Canon Inc | Corona discharge device |
EP0334287A2 (en) * | 1988-03-22 | 1989-09-27 | Hitachi, Ltd. | Electrostatic recording apparatus |
JPH02139583A (en) * | 1988-03-22 | 1990-05-29 | Hitachi Ltd | Electrostatic recorder, its control method and evaluation of service life of electrostatic recording photosensitive body |
JPH1049007A (en) * | 1997-05-12 | 1998-02-20 | Hitachi Ltd | Electrostatic recording system |
Also Published As
Publication number | Publication date |
---|---|
JPS641787B2 (en) | 1989-01-12 |
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