Copying and telecopying device
US4005933A · kind A · utility
4Cited by
4References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 6, 1975 |
| Grant date | Feb 1, 1977 |
| Priority date | — |
| Expiry date | Aug 6, 1995 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/12
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Copying and telecopying device using a mechanism ensuring the analysis of a document by a scanning beam which, transmitted from the document, is sent to a drum coated with selenium. According to the invention, the equipment is completed by a laser source whose beam can be directed along two parallel incident paths, to a helical mirror, one of the beams being used for the analysis of the document and the transmission of the information at a distance, the other beam being modulated by a facsimile signal and being directed onto the drum coated with selenium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.