Optical scanning apparatus having means to stabilize optical unit against the platen
US5194898A · kind A · utility
11Cited by
4References
14Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 1992 |
| Grant date | Mar 16, 1993 |
| Priority date | — |
| Expiry date | Mar 2, 2012 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/193
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An optical scanning apparatus for scanning image information of a document on a document support (D) and a scanning unit (50) being positively guided along a predetermined scanning path; characterized in that said scanning unit has bearing members (30) for making contact with a face of said document or document support and thereby determining the optical distance between that face and said focusing means (10), and in that said unit is mounted so that it is under biasing forces which maintain its said bearing members in running contact with said document or document support during a scanning movement of the unit.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.