Control circuit for an electrostatic copying apparatus
US4607943A · kind A · utility
8Cited by
15References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 9, 1985 |
| Grant date | Aug 26, 1986 |
| Priority date | — |
| Expiry date | May 9, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/041
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An electrostatic copying process and apparatus capable of forming copies in at least two different ratios. The formation of a copied image involves exposure scanning of the image of an original document and projecting it on a photosensitive member through an optical device. The change of the ratio of copying is achieved by changing the ratio of projection of the image of the document onto the photosensitive member by the optical device, and also changing the speed of scanning.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.