Camera back including improved film assemblage
US5802402A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 15, 1997 |
| Grant date | Sep 1, 1998 |
| Priority date | — |
| Expiry date | Apr 15, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A film cassette may be used for housing film units of the self-developing type, each having a photosensitive area, a pod of processing fluid, and a leading edge. The film cassette may be used in a film assemblage, camera back, or imaging device having either a straight or a curvilinear film path configuration. One such film cassette includes: a chamber defined by forward and rear walls, a pair of side walls, and leading and trailing end walls; means for resiliently supporting the film units within the chamber; first spread control means for use when the imaging device has a straight film path configuration, the first spread control means including at least one projection formed on an interior surface of the forward wall; and second spread control means for use when the imaging device has a curvilinear film path configuration, the second spread control means including at least one projection formed on a bottom surface of the rear wall.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.