Method of feeding developer to developing zone in electrophotography
US5196888A · kind A · utility
6Cited by
8References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 23, 1991 |
| Grant date | Mar 23, 1993 |
| Priority date | — |
| Expiry date | May 23, 2011 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/09
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The method of feeding a developer according to the present invention is characterized by controlling the quantity of the developer fed to a developing zone, by the use of a member having on its surface an electret dielectric layer, which is used as an ear cutter. According to the present invention, the quantity of the developer being carried is controlled by the action of an electrostatic force exerted from the electret dielectric layer. Hence it becomes possible to effectively eliminate the density unevenness, charge unevenness of the developer and to obtain a stable image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.