JPS55135847A - Composite photoreceptor for electrophotography - Google Patents
Composite photoreceptor for electrophotographyInfo
- Publication number
- JPS55135847A JPS55135847A JP4365579A JP4365579A JPS55135847A JP S55135847 A JPS55135847 A JP S55135847A JP 4365579 A JP4365579 A JP 4365579A JP 4365579 A JP4365579 A JP 4365579A JP S55135847 A JPS55135847 A JP S55135847A
- Authority
- JP
- Japan
- Prior art keywords
- red
- layer
- light
- photoreceptor
- color
- 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
- Photoreceptors In Electrophotography (AREA)
Abstract
PURPOSE: To obtain a 2-color copy high quality of one imagewise exposure step, by forming a photoreceptor having 2 photoconductive layers different in sensitivity to a chromatic color, and providing a resin dispersion layer containing TiO2 and a red- sensitizer as the second photoconductive layer.
CONSTITUTION: First photoconductive layer 12 of amorphous Se or the like is formed on electroconductive substrate 11, and layer 2 is made conductive by a chromatic color light, e.g., a nonred light transmitted through second photoconductive layer 14, and on layer 12 layer 14 consisting of TiO2 and a red-sensitizer (bromophenolblue, or so) becoming sensitive to red light is formed to prepare photoreceptor 1. Photoreceptor 1 undergoes successively first corona charging as being irradiated by light through a red filter to render the surface potential negative, second charging in a somewhat smaller amount to render the surface potential positive, exposure to the light image of original 2 to give surface potentials corresponding to black BL, white W, and red R of original 2 different in polarity, and development with black toner Tb and red toner Ta different from each other in polarity, thus permitting a 2-color sharp copy to be obtained.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4365579A JPS55135847A (en) | 1979-04-12 | 1979-04-12 | Composite photoreceptor for electrophotography |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4365579A JPS55135847A (en) | 1979-04-12 | 1979-04-12 | Composite photoreceptor for electrophotography |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55135847A true JPS55135847A (en) | 1980-10-23 |
Family
ID=12669872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4365579A Pending JPS55135847A (en) | 1979-04-12 | 1979-04-12 | Composite photoreceptor for electrophotography |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55135847A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3243869A1 (en) * | 1981-11-27 | 1983-06-09 | Ishihara Sangyo Kaisha, Ltd., Osaka | ELECTROPHOTOGRAPHIC RECORDING METHOD |
-
1979
- 1979-04-12 JP JP4365579A patent/JPS55135847A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3243869A1 (en) * | 1981-11-27 | 1983-06-09 | Ishihara Sangyo Kaisha, Ltd., Osaka | ELECTROPHOTOGRAPHIC RECORDING METHOD |
| US4525441A (en) * | 1981-11-27 | 1985-06-25 | Ishihara Sangyo Kaisha, Ltd. | Multicolor electrophotographic process using TiO2 |
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