Toner contamination preventive means
US4970552A · kind A · utility
14Cited by
1References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 20, 1988 |
| Grant date | Nov 13, 1990 |
| Priority date | — |
| Expiry date | May 20, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/0435
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic photographic image forming apparatus for forming an electrostatic image on a photosensitive member by the light beam from a writing system and transferring to a transfer paper the image which has been made visible by a development apparatus. A shutter or a toner contamination preventive means is provided at the space defining an optical path extending between the photosensitive member and the lens of the writing system nearest to the photosensitive member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.