JPS5486338A - Electrophotography - Google Patents
ElectrophotographyInfo
- Publication number
- JPS5486338A JPS5486338A JP15462577A JP15462577A JPS5486338A JP S5486338 A JPS5486338 A JP S5486338A JP 15462577 A JP15462577 A JP 15462577A JP 15462577 A JP15462577 A JP 15462577A JP S5486338 A JPS5486338 A JP S5486338A
- Authority
- JP
- Japan
- Prior art keywords
- latent image
- plate
- screen
- ion current
- modulation
- 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
- Control Or Security For Electrophotography (AREA)
Abstract
PURPOSE: To form a secondary latent image of high stability, by providing a shielding member between a photosensitive screen and a chargeable member, by stabilizing a primary latent image, and by setting application voltage in accordance with ion current flowing through this.
CONSTITUTION: A latent image forming means is arranged around drum-shaped screen 1 and movable shielding plate 26 is mounted along guide groove 26 between screen 1 facing modulation corona discharger 21, and insulating drum 22 forming a secondary latent image. In the first modulation of ion current, plate 25 is closed to stabilize a primary latent image, and plate 25 is moved to form a secondary latent image, and at the same time, the ion current flowing through plate 25 is taken out, a test image is modulated, deterioration of screen 1 is detected, and application voltage is adjusted, thereby permitting image quality to be stabilized from the first to the end in retention copying.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15462577A JPS5486338A (en) | 1977-12-22 | 1977-12-22 | Electrophotography |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15462577A JPS5486338A (en) | 1977-12-22 | 1977-12-22 | Electrophotography |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5486338A true JPS5486338A (en) | 1979-07-09 |
Family
ID=15588264
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15462577A Pending JPS5486338A (en) | 1977-12-22 | 1977-12-22 | Electrophotography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5486338A (en) |
-
1977
- 1977-12-22 JP JP15462577A patent/JPS5486338A/en active Pending
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