JPS6470777A - Image forming device - Google Patents
Image forming deviceInfo
- Publication number
- JPS6470777A JPS6470777A JP22709687A JP22709687A JPS6470777A JP S6470777 A JPS6470777 A JP S6470777A JP 22709687 A JP22709687 A JP 22709687A JP 22709687 A JP22709687 A JP 22709687A JP S6470777 A JPS6470777 A JP S6470777A
- Authority
- JP
- Japan
- Prior art keywords
- component
- fogging
- bias voltage
- photosensitive drum
- drum
- 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
Landscapes
- Developing For Electrophotography (AREA)
Abstract
PURPOSE:To prevent the occurrence of fogging on a photosensitive drum by executing a developing process to an electrostatic latent image with a developing means on which a bias voltage obtained by super-posing DC component on AC component is impressed and attenuating the AC component in a specified time constant when the bias voltage is off. CONSTITUTION:The electrostatic latent image formed on the photosensitive drum 6 is developed with the developing sleeve 2, etc., on which the bias voltage obtained by superposing the DC component on the AC component is impressed from a bias power source 12. When the A.C component is attenuated in time constant pi which satisfies fXtau>=3 with respect to AC component frequency (f) in case of making the AC component off, toner which moves reciprocally between the sleeve 2 and the drum 1 is gradually reduced and the toner which is left on the drum 1 to cause the fogging becomes a little. As a result, the occurrence of the fogging on the photosensitive drum can be prevented and a developed image without stain can be formed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22709687A JPS6470777A (en) | 1987-09-10 | 1987-09-10 | Image forming device |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP22709687A JPS6470777A (en) | 1987-09-10 | 1987-09-10 | Image forming device |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6470777A true JPS6470777A (en) | 1989-03-16 |
Family
ID=16855428
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP22709687A Pending JPS6470777A (en) | 1987-09-10 | 1987-09-10 | Image forming device |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6470777A (en) |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5553372A (en) * | 1978-10-14 | 1980-04-18 | Canon Inc | Method and apparatus for electrophotographic development |
JPS5614266A (en) * | 1979-07-16 | 1981-02-12 | Canon Inc | Toner image forming method |
JPS60249171A (en) * | 1984-05-25 | 1985-12-09 | Konishiroku Photo Ind Co Ltd | Image forming method |
JPS6136851B2 (en) * | 1981-05-19 | 1986-08-20 | Hitachi Chemical Co Ltd |
-
1987
- 1987-09-10 JP JP22709687A patent/JPS6470777A/en active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5553372A (en) * | 1978-10-14 | 1980-04-18 | Canon Inc | Method and apparatus for electrophotographic development |
JPS5614266A (en) * | 1979-07-16 | 1981-02-12 | Canon Inc | Toner image forming method |
JPS6136851B2 (en) * | 1981-05-19 | 1986-08-20 | Hitachi Chemical Co Ltd | |
JPS60249171A (en) * | 1984-05-25 | 1985-12-09 | Konishiroku Photo Ind Co Ltd | Image forming method |
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