Film processor
US4645323A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Mar 17, 1986 |
| Grant date | Feb 24, 1987 |
| Priority date | — |
| Expiry date | Mar 17, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D9/02
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
Apparatus for processing a roll of self-developing type film. The film and a length of flexible sheet material are unwound from their respective spools and laminated to each other with a layer of processing liquid located therebetween prior to being wound as a laminate upon a rotating drum. After the formation of a visible image within the film, a drive train is energized to drive the spools in a direction which unwinds the laminate from the drum and simultaneously rewinds the film and sheet material upon their spools. The drive train is continuously connected to the drives for the spools and includes a clutch arrangement which insures that the rotation of the drum in an unwinding direction is under the control of the sheet material drive while the torque delivered to the film drive keeps the film taut without becoming the dominant force in rotating the drum.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.