Method and apparatus for forming a multicolor picture by electrophotography
US4959695A · kind A · utility
13Cited by
3References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1987 |
| Grant date | Sep 25, 1990 |
| Priority date | — |
| Expiry date | Apr 9, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0163
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
In a method and apparatus of forming a muticolor picture by electrophotography, first color toner, second color toner and third color toner are allowed to stick onto a photosensitive material according to the conventional method. Then after the surface of the photosensitive material is discharged to decrease the surface potential thereof, a fourth color toner is allowed to stick onto the photosensitive material, whereby mixing of the fourth color with the first, second and third colors is prevented.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.