Surface potential control device of photoconductive member
US4920380A · kind A · utility
7Cited by
7References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 29, 1988 |
| Grant date | Apr 24, 1990 |
| Priority date | — |
| Expiry date | Jul 29, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
When a photoreceptor provided in an image forming apparatus is electrified for image formation, the output of a charger starts with a different value from a predetermined value and it is controlled to gradually match up to the predetermined value. It is also controlled in a way to start with a lower value than a predetermined value corresponding to the time a charger suspended its operation and gradually match up to the predetermined time. Such control is carried out by controlling grid voltage which flows into grid electrode disposed between a photoreceptor and wire electrode provided for discharging.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.