Surface potential control device of photoconductive member
US5060017A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 13, 1989 |
| Grant date | Oct 22, 1991 |
| Priority date | — |
| Expiry date | Dec 13, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0266
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Action of a charging device in an image forming apparatus is started with an output value different from a predetermined value which is set according to a characteristic of attenuation of a photoconductor, and the value is controlled so as to coincide with the predetermined value after a predetermined period of time has elapsed. It is further controlled so as to become different output characteristics at an initial stage and the latter half stage of the predetermined period of time to charge the photoconductor corresponding to actual difference in the state of attenuation caused by the difference in a period of duration when it is used and when it is not used.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.