Electrophotographic device with controlled exposed potential
US4910555A · kind A · utility
5Cited by
2References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1988 |
| Grant date | Mar 20, 1990 |
| Priority date | — |
| Expiry date | Nov 7, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/045
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrophotographic device has a photosensitive element, an electrifier that forms a uniform electrostatic potential on the photosensitive element, and a light source for irradiating the photosensitive element to obtain an electrostatic latent image that has a reduced potential. A bias potential is applied to the photosensitive element after the latent image is formed, but before it is developed, so that the reduced potential of the latent image can be maintained at a constant level. With constant potentials existing on the photosensitive element, a printed image of high quality is obtained.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.