Processing condition control system for a multi-purpose film han

Optics: motion pictures – With film treating or working

Patent

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Details

352172, 352180, 352182, 354 84, 354299, G03C 1100

Patent

active

040812111

ABSTRACT:
A system for controlling development conditions under which an exposed film strip is processed with a compact multi-purpose film handling cartridge. The film cartridge which is adapted to be mounted in a motion picture camera and projector employing the system of the invention and including motor drive means contains a strip of film, a processing station, film advance means engaging said drive means when the cartridge is mounted in said camera or projector, and an applicator containing development chemicals positioned in said processing station to be brought into operable relationship with the film strip when said processing station is rendered operable, thereby they are expressed onto the film strip from the applicator while said film strip is being advanced. In order to optimize the processing of the exposed film strip regardless of deviation of the temperature of the development chemicals from a desired predetermined level, the system includes means located in close proximity to the applicator for detecting the ambient temperature thereof, a first motor control means cooperating with said temperature detecting means to control the speed of said motor in accordance with the detected temperature, and a second motor control means for maintaining a constant rate of travel of the film strip advanced by said film advance means across the processing station, said first and second motor control means being associated with each other for processing the exposed film strip in optimization as well as in uniformity along the length of the film strip.

REFERENCES:
patent: 2326654 (1943-08-01), Jagust
patent: 2768564 (1956-10-01), Land
patent: 2987956 (1961-06-01), Planert
patent: 3335695 (1967-08-01), Hayashi
patent: 3554107 (1971-01-01), McCarthy
patent: 3601479 (1971-08-01), Komine
patent: 3604329 (1971-09-01), Land
patent: 3792919 (1974-02-01), Holmes
patent: 3800306 (1974-03-01), Land

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