JPS5459150A - Dichromatic electrophotographic copier - Google Patents
Dichromatic electrophotographic copierInfo
- Publication number
- JPS5459150A JPS5459150A JP12542577A JP12542577A JPS5459150A JP S5459150 A JPS5459150 A JP S5459150A JP 12542577 A JP12542577 A JP 12542577A JP 12542577 A JP12542577 A JP 12542577A JP S5459150 A JPS5459150 A JP S5459150A
- Authority
- JP
- Japan
- Prior art keywords
- photoreceptors
- dichromatic
- photoreceptor
- document
- latent images
- 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 copy a dichromatic original document, such as, red and black, etc. on the white ground by cancelling the electric charge of a latent image each other and transferring it due to the contact of the first and second photoreceptors of belt or drum shape.
CONSTITUTION: The first and second photoreceptors 2, 3 are rotated while they are being charged uniformly by chargers 21, 31. Original document O is scanned at the exposure unit, the mirror image of the document O is radiatd on the photoreceptor 2 via color filter 22 while the positive image of the document 0 is radiated on the photoreceptor 3 via color filter 32, and electrostatic latent images of opposite polarities each other are formed. Electrostatic latent images formed on the photoreceptors 2, 3 move with the rotation of the photoreceptors, accumulate one above another at the contact unit, and the cancel of electric charge occurs. In this state, dichromatic eectrostatic latent images formed on the surface of the photoreceptor 2 are colored with black and red colors, made visible by developing device 23 with the toners charged by positive and negative polaities, respectively, and transferred on recording sheet S as the positive image
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12542577A JPS5459150A (en) | 1977-10-19 | 1977-10-19 | Dichromatic electrophotographic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP12542577A JPS5459150A (en) | 1977-10-19 | 1977-10-19 | Dichromatic electrophotographic copier |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5459150A true JPS5459150A (en) | 1979-05-12 |
Family
ID=14909774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP12542577A Pending JPS5459150A (en) | 1977-10-19 | 1977-10-19 | Dichromatic electrophotographic copier |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5459150A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6970673B2 (en) * | 2003-10-28 | 2005-11-29 | Xerox Corporation | Highlight color printing machine |
-
1977
- 1977-10-19 JP JP12542577A patent/JPS5459150A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6970673B2 (en) * | 2003-10-28 | 2005-11-29 | Xerox Corporation | Highlight color printing machine |
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