Developing apparatus
US4833500A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1987 |
| Grant date | May 23, 1989 |
| Priority date | — |
| Expiry date | Sep 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/101
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A developing apparatus in a transfer-type electrophotographic system having a photosensitive body, wherein the developing apparatus includes a developing roller spaced a small distance from the photosensitive body for supplying a developing solution to the photosensitive body to develop a latent image thereon and to induce a potential on the developing roller through the developing solution from the photosensitive body. A cleaning member is held against the developing roller. In one embodiment, the potential of the developing roller is limited to a level intermediate between predetermined upper and lower limits, an a developing roller is switched into an electrically floating condition except during development of an image. In another embodiment, a developing bias potential is produced responsive to the potential of the developing roller. The bias potential is then applied to the developing roller which is used as a developing electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.