JPS5680068A - Developing device for two-color electrophotography - Google Patents
Developing device for two-color electrophotographyInfo
- Publication number
- JPS5680068A JPS5680068A JP15771679A JP15771679A JPS5680068A JP S5680068 A JPS5680068 A JP S5680068A JP 15771679 A JP15771679 A JP 15771679A JP 15771679 A JP15771679 A JP 15771679A JP S5680068 A JPS5680068 A JP S5680068A
- Authority
- JP
- Japan
- Prior art keywords
- developing device
- toner
- developing
- roller
- toners
- 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 perform the separation and recovery of mixed toners surely by disposing a separating roller having the potential of the polarity opposite from that of the toner in the 1st developing device in the position where the toner after development in the 2nd developing device falls.
CONSTITUTION: In the developing device for two-color electrophotography, two kinds of latent images of mutually different polarities formed on a photoreceptor are successively devloped by the 1st and 2nd developing devices contatining two kinds of toners of different colors and charging polarities respectively separately. At the time of developing in the 2nd developing device, the toner image 23 formed by the development with the 1st developing device already exists on a photoreceptor 19 and when the developing roller 15 of the 2nd developing device rubs this, the toner of the surface layer is scrapped off. The toner mixed in this way is removed by a separating roller 24 which is revolving. In addition, the mixed toners having adhered on the roller 24 are scrapped off by a scraping member 25 and are recovered into a vessel 26.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15771679A JPS5680068A (en) | 1979-12-05 | 1979-12-05 | Developing device for two-color electrophotography |
DE19803016243 DE3016243C2 (en) | 1979-04-26 | 1980-04-26 | Two-color electrostatic copier |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP15771679A JPS5680068A (en) | 1979-12-05 | 1979-12-05 | Developing device for two-color electrophotography |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5680068A true JPS5680068A (en) | 1981-07-01 |
Family
ID=15655806
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP15771679A Pending JPS5680068A (en) | 1979-04-26 | 1979-12-05 | Developing device for two-color electrophotography |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5680068A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108557A (en) * | 1981-12-22 | 1983-06-28 | Fujitsu Ltd | Two-color recording device |
JPS5978377A (en) * | 1982-10-28 | 1984-05-07 | Fujitsu Ltd | Developing device of multicolor recording device |
JPS62195155U (en) * | 1986-05-30 | 1987-12-11 |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54104834A (en) * | 1978-02-06 | 1979-08-17 | Ricoh Co Ltd | Two-color image reproducing device |
-
1979
- 1979-12-05 JP JP15771679A patent/JPS5680068A/en active Pending
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS54104834A (en) * | 1978-02-06 | 1979-08-17 | Ricoh Co Ltd | Two-color image reproducing device |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58108557A (en) * | 1981-12-22 | 1983-06-28 | Fujitsu Ltd | Two-color recording device |
JPH041906B2 (en) * | 1981-12-22 | 1992-01-14 | Fujitsu Ltd | |
JPS5978377A (en) * | 1982-10-28 | 1984-05-07 | Fujitsu Ltd | Developing device of multicolor recording device |
JPH0447825B2 (en) * | 1982-10-28 | 1992-08-05 | Fujitsu Ltd | |
JPS62195155U (en) * | 1986-05-30 | 1987-12-11 |
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