Processing apparatus for large format cameras
US4162834A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 23, 1977 |
| Grant date | Jul 31, 1979 |
| Priority date | — |
| Expiry date | Dec 23, 1997 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03B17/52
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Processing apparatus for large format, instant cameras in which a metered supply of processing fluid, deposited as a puddle in a crease between negative and positive photographic sheets as they are fed from separate supply rolls to the nip of a pressure roll pair, is spread throughout an image format area by passage of the sheets through the pressure roll nip. Containment of the processing fluid laterally so that it is confined to the side margins of the image format area is effected by a pair of nozzle members each having a blade portion to lie in and generally complement the configuration of the crease at opposite ends thereof. The nozzle blades are formed with passageways through which air may be directed inwardly and downwardly against the ends of the processing fluid puddle during the time the sheets are fed through the pressure roll pair to spread the fluid uniformly over the image format.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.