Film cassette-liquid spread roller assembly interface
US4839676A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 2, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | May 2, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Photographic apparatus for supporting a cassette containing a plurality of film units of the self-developing type in position for exposure. Subsequent to its exposure, the film unit is moved out of the cassette and redirected to a liquid spread roller assembly located below the cassette. The roller assembly includes PA1 (1) a pair of rollers for rupturing a container of processing liquid associated with a leading end of the film and spreading its contents between layers of the film unit to initiate the formation of a visible image, and PA1 (2) structure which cooperates with the external configuration of the cassette for controlling the thickness and/or shape of the processing liquid being spread.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.