Film processor
US4012753A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 2, 1975 |
| Grant date | Mar 15, 1977 |
| Priority date | — |
| Expiry date | May 2, 1995 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86236
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A reliable machine for developing film, which minimizes the possibility of damage to the film surface and which provides close control of processing conditions. A film strip is pulled by a detachable member attached at the front end of the strip, and is guided along the machine by rollers spaced along the film path, with each roller having a film-supporting surface at each end and a wide cutaway portion between the film-supporting surfaces so that each roller touches only edge portions of the film. Chemicals in the tank are replenished by a system which includes a plunger that moves down into the tank to cause some of the chemicals to overflow into a drain and which then moves up out of the tank to lower the fluid level therein, and a bottle with an open lower end which supplies chemicals to restore the fluid to its original level.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.