Microfilm camera
US3966320A · kind A · utility
3Cited by
2References
6Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 7, 1975 |
| Grant date | Jun 29, 1976 |
| Priority date | — |
| Expiry date | Apr 7, 1995 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B27/60
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A microfilm camera with a suction plate which is provided for holding a sheet of film and which can be moved step by step across a film gate. The film gate is provided, on the bearing surface facing towards the sheet of film, with suction apertures. During each exposure operation, the suction apertures can be connected up to a vacuum pump by means of a suction conduit. This suction conduit can be closed by a valve.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.