JPS55163545A - Two-color electrophotographic copying method and its device - Google Patents
Two-color electrophotographic copying method and its deviceInfo
- Publication number
- JPS55163545A JPS55163545A JP7174879A JP7174879A JPS55163545A JP S55163545 A JPS55163545 A JP S55163545A JP 7174879 A JP7174879 A JP 7174879A JP 7174879 A JP7174879 A JP 7174879A JP S55163545 A JPS55163545 A JP S55163545A
- Authority
- JP
- Japan
- Prior art keywords
- color
- light
- red
- photoreceptor
- positive
- 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
- 238000000034 method Methods 0.000 title abstract 2
- 108091008695 photoreceptors Proteins 0.000 abstract 5
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010030 laminating Methods 0.000 abstract 1
- 230000035945 sensitivity Effects 0.000 abstract 1
- 239000000758 substrate Substances 0.000 abstract 1
Abstract
PURPOSE: To form the sharp copies of uniformly high image density by radiating the light of the specific wavelengths to the surface of a photoreceptor between primary developing and secondary developing in the two-color electrophotographic copying method using the laminated photoreceptor.
CONSTITUTION: The photoreceptor P comprising laminating the 1st photoconductive layer 2 sensitive to red light and the 2nd photoconductive layer 3 which is insensitive to red color light, allows its transmission and is sensitive to other visible light on a conductive substrate 1 is used. The surface of the photoreceptor P is evenly primary-charged negative and in succession to this it is subjected to positive secondary charging slightly less than the above-mentioned charge amount, after which it is radiated with the light images of a two-color original 6, whereby the surface potentials of the photoreceptor regions Pa, Pb, Pc respectively corresponding to white-color ground part 6a, black-color part 6b and red-color part 6c are made zero, positive and negative. Next, the red-color part is subjected to primary development by positive-charged red-color toners 7, after which the light (for example, blue-color light) having sensitivity to only the 2nd photoconductive layer 3 is radiated over the entire surface to make the positive charging of the regions Pb strong, thence it is subjected to secondary development by negative-charged black-color toner 9.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7174879A JPS55163545A (en) | 1979-06-07 | 1979-06-07 | Two-color electrophotographic copying method and its device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7174879A JPS55163545A (en) | 1979-06-07 | 1979-06-07 | Two-color electrophotographic copying method and its device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS55163545A true JPS55163545A (en) | 1980-12-19 |
Family
ID=13469452
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7174879A Pending JPS55163545A (en) | 1979-06-07 | 1979-06-07 | Two-color electrophotographic copying method and its device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS55163545A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144568A (en) * | 1981-03-02 | 1982-09-07 | Fuji Xerox Co Ltd | Double-color electrophotographing method |
| JP2003536030A (en) * | 2000-06-07 | 2003-12-02 | エスケイエフ フランス | Rolling bearing device with brake |
-
1979
- 1979-06-07 JP JP7174879A patent/JPS55163545A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57144568A (en) * | 1981-03-02 | 1982-09-07 | Fuji Xerox Co Ltd | Double-color electrophotographing method |
| JP2003536030A (en) * | 2000-06-07 | 2003-12-02 | エスケイエフ フランス | Rolling bearing device with brake |
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