Apparatus for precluding rotational movement of an advancing film unit
US4668062A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 15, 1986 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Aug 15, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/32
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic apparatus for use with a film unit of the self-developing type including a chamber for locating a film unit situated within a film cassette in position for exposure and a pair of rollers mounted adjacent a leading edge of a film unit located in the exposure position. The rollers are positioned to define a longitudinally extending gap which is substantially parallel with the leading edge of the film unit located in the exposure position. Film cassette structure is provided for maintaining the leading edge of the film unit substantially parallel to the longitudinally extending roller pair formed gap as the film unit is advanced toward and enters the roller-formed gap.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.