Method and apparatus for holding a film transparency in a rotary drum scanner
US5574578A · kind A · utility
5Cited by
3References
25Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 7, 1994 |
| Grant date | Nov 12, 1996 |
| Priority date | — |
| Expiry date | Mar 7, 2014 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/0404
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A film transparency (7) is held by centrifugal force with its emulsion side in contact with the inside of the transparent drum (1) of a rotary drum scanner (1, 2, 3) used in a graphic reproduction process. A transparency locator is in the form of either an insert (4) or a clip device (20) and serves to hold the film transparency in position until the drum is rotating at a sufficiently high speed.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.