Exposure control for selective speed xerographic printing and the like
US4197560A · kind A · utility
5Cited by
8References
9Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1976 |
| Grant date | Apr 8, 1980 |
| Priority date | — |
| Expiry date | Apr 1, 1996 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40037
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A selective speed xerographic processor having a laser for exposing a photoreceptor at any one of a plurality of different printing rates in response to a video signal is characterized by including an adjustable optical attenuator and an adjustable electrical attenuator for coarsely and more precisely, respectively, normalizing the exposure process. The processor may be used to advantage as a printer for a facsimile systems offering a choice of several different document transmission times.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.