JPS5560968A - Electrophotographic copier - Google Patents
Electrophotographic copierInfo
- Publication number
- JPS5560968A JPS5560968A JP13425178A JP13425178A JPS5560968A JP S5560968 A JPS5560968 A JP S5560968A JP 13425178 A JP13425178 A JP 13425178A JP 13425178 A JP13425178 A JP 13425178A JP S5560968 A JPS5560968 A JP S5560968A
- Authority
- JP
- Japan
- Prior art keywords
- temperature
- drum
- surface potentials
- photoreceptor
- destaticizing lamp
- 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
- Exposure Or Original Feeding In Electrophotography (AREA)
- Control Or Security For Electrophotography (AREA)
- Discharging, Photosensitive Material Shape In Electrophotography (AREA)
Abstract
PURPOSE:To hole the surface potentials of a photoreceptor always in an optimum state and even the image density by providing a control unit which detects the ambient temperature of the photoreceptor and so constituting the same that a pre- exposure destaticizing lamp flickers at the specified temperature. CONSTITUTION:When a temperature detector 12 is detecting that the temperature is within 40 deg.C, a destaticizing lamp 10 lights and pre-exposes a drum 1. A charging charger 2 charges the drum by holding the surface potentials thereof at 500V or more. When the ambient temperature of the drum 1 rises and the temperature detector 12 detects 40 deg.C or more, an electric signal is sent to a control part 13 which in turn achieves putting out of the destaticizing lamp 10. Hence, the decrease in the surface potentials of the drum 1 with an increase in temperature is prevented and the optimum image density may be obtained. There is no hindrance even if copying operation is continued while the destaticizing lamp 10 is off. This constitution enables the surface potentials of the photoreceptor to be maintained alwsys in an optimum state.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13425178A JPS5560968A (en) | 1978-10-31 | 1978-10-31 | Electrophotographic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13425178A JPS5560968A (en) | 1978-10-31 | 1978-10-31 | Electrophotographic copier |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS5560968A true JPS5560968A (en) | 1980-05-08 |
JPS6219754B2 JPS6219754B2 (en) | 1987-04-30 |
Family
ID=15123920
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13425178A Granted JPS5560968A (en) | 1978-10-31 | 1978-10-31 | Electrophotographic copier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5560968A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4502777A (en) * | 1981-05-02 | 1985-03-05 | Minolta Camera Kabushiki Kaisha | Transfer type electrophotographic copying apparatus with substantially constant potential control of photosensitive member surface |
JPS6157976A (en) * | 1984-08-29 | 1986-03-25 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
-
1978
- 1978-10-31 JP JP13425178A patent/JPS5560968A/en active Granted
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4502777A (en) * | 1981-05-02 | 1985-03-05 | Minolta Camera Kabushiki Kaisha | Transfer type electrophotographic copying apparatus with substantially constant potential control of photosensitive member surface |
JPS6157976A (en) * | 1984-08-29 | 1986-03-25 | Konishiroku Photo Ind Co Ltd | Electrostatic recorder |
Also Published As
Publication number | Publication date |
---|---|
JPS6219754B2 (en) | 1987-04-30 |
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