Apparatus for photographic film processing cross-reference to a related applicaton
US4758858A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 22, 1987 |
| Grant date | Jul 19, 1988 |
| Priority date | — |
| Expiry date | Jun 22, 2007 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03D3/135
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A photographic film processor includes an upstanding processing rack which is immersed in a processing liquid tank. The rack has oppositely spaced pairs of mating vertical rack panels, each pair defining a vertical belt path and at least one vertical film process channel. An endless timing belt extends over a drive sprocket at the top of the processing rack, over an idler sprocket at the bottom of the rack, and along the vertical belt paths defined by the respective opposite pairs of vertical rack panels. The timing belt has inner teeth for engagement with the sprockets and outer teeth for engagement with a flexible film leader card to which at least one exposed filmstrip is secured. Rotation of the drive sprocket advances the timing belt continuously along the vertical belt paths to pull the exposed filmstrip along the vertical film process channels. A processing liquid is pumped into a central vertical cavity between the opposite pairs of vertical rack panels and is constrained for positive flow through numerous inlet openings in each inner rack panel at either side of the central cavity. The processing liquid is directed against the emulsion side of successive sections of the fi…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.