JPS54143147A - Zerographic image formation - Google Patents
Zerographic image formationInfo
- Publication number
- JPS54143147A JPS54143147A JP5006978A JP5006978A JPS54143147A JP S54143147 A JPS54143147 A JP S54143147A JP 5006978 A JP5006978 A JP 5006978A JP 5006978 A JP5006978 A JP 5006978A JP S54143147 A JPS54143147 A JP S54143147A
- Authority
- JP
- Japan
- Prior art keywords
- layer
- exposure
- image
- optical
- accomplished
- 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
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Photoreceptors In Electrophotography (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
Abstract
PURPOSE: To make it possible to produce an image having excellent gradation by forming a latent image of an optical attenuation proportional to exposure.
CONSTITUTION: A photosensitive element 5 for zerography has its conductive substrate 51 overlaid by photosensitive layers 52 and 53. The layer 52 has a continuing internal polarization, whereas the layer 53 has a different optical attenuating curve from the layer 52 and has transparency. And, a primary charging operation is accomplished while uniformly irradiating with the light to which the layer 53 exhibits no optical sensitivity. Then, a secondary cahrging operation is accomplished in the dark such that the current of the secondary operation is lower than that of the primary operation. If, under this condition, the image exposure is performed, an electrostatic latent image is produced by the optical attenuation substantially proportional to the exposure.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5006978A JPS54143147A (en) | 1978-04-28 | 1978-04-28 | Zerographic image formation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP5006978A JPS54143147A (en) | 1978-04-28 | 1978-04-28 | Zerographic image formation |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS54143147A true JPS54143147A (en) | 1979-11-08 |
JPS6213659B2 JPS6213659B2 (en) | 1987-03-27 |
Family
ID=12848701
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP5006978A Granted JPS54143147A (en) | 1978-04-28 | 1978-04-28 | Zerographic image formation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS54143147A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01229259A (en) * | 1988-03-09 | 1989-09-12 | Seikosha Co Ltd | Photosensitive body |
-
1978
- 1978-04-28 JP JP5006978A patent/JPS54143147A/en active Granted
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH01229259A (en) * | 1988-03-09 | 1989-09-12 | Seikosha Co Ltd | Photosensitive body |
Also Published As
Publication number | Publication date |
---|---|
JPS6213659B2 (en) | 1987-03-27 |
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