Photographic developing apparatus and electrifying apparatus
US5887233A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jul 16, 1997 |
| Grant date | Mar 23, 1999 |
| Priority date | — |
| Expiry date | Jul 16, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0806
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic developing apparatus which visualizes a latent image formed on an image carrier is disclosed which includes: PA1 a developing powder carrier provided so as to be opposite to the image carrier; PA1 a layer forming member for forming a thin layer of developing powder over a circumferential surface of the developing powder carrier; PA1 a charge imparting member which is provided so as to be opposite to the developing powder carrier and causes an electric field between the charge imparting member and the developing powder carrier; and PA1 an electrification control member which is interposed between the charge imparting member and the developing powder carrier, and limits an ionization area caused by electric discharge in the electric field by receiving an intermediate electric potential between the electric potential of the charge imparting member and the electric potential of the developing powder carrier.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.