JPS5633657A - Method for marking electrophotographic copy - Google Patents
Method for marking electrophotographic copyInfo
- Publication number
- JPS5633657A JPS5633657A JP10864979A JP10864979A JPS5633657A JP S5633657 A JPS5633657 A JP S5633657A JP 10864979 A JP10864979 A JP 10864979A JP 10864979 A JP10864979 A JP 10864979A JP S5633657 A JPS5633657 A JP S5633657A
- Authority
- JP
- Japan
- Prior art keywords
- receptor
- layer
- color
- black
- latent image
- 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
Abstract
PURPOSE: To enable a specified pattern to be marked at the same time as a latent image is formed, by providing on part of a photoreceptor surface another photoconductive layer to be charged to a polarity reverse to that of the latent image to be formed on a photoreceptor.
CONSTITUTION: Electrophotographic receptor 1 usually employed in black and white copying is provided on part of it with photoconductive layer 3 having sensitivity to a light of a certain color but transmitting the light of the other color capable of rendering receptor 1 under this layer 3 substantially conductive. Interlayer 4 may be interposed between receptor 1 and layer 3. It is convenient that a mark, such as "secret" in a color not black and white but red can be formed by exposing layer 3 on part of receptor 1 at the same time as charging exposure of receptor 1.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10864979A JPS5633657A (en) | 1979-08-28 | 1979-08-28 | Method for marking electrophotographic copy |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP10864979A JPS5633657A (en) | 1979-08-28 | 1979-08-28 | Method for marking electrophotographic copy |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5633657A true JPS5633657A (en) | 1981-04-04 |
Family
ID=14490151
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP10864979A Pending JPS5633657A (en) | 1979-08-28 | 1979-08-28 | Method for marking electrophotographic copy |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5633657A (en) |
-
1979
- 1979-08-28 JP JP10864979A patent/JPS5633657A/en active Pending
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