Method and apparatus for heating cassette contained film strip d

Details Method and apparatus for heating cassette contained film strip d Method and apparatus for heating cassette contained film strip d

Filed on

1976-01-09

Date issued

1977-09-06

Examiner

Hix, L. T.

Patent Class

Electric heating

SubClass

Microwave heating

SubSubClass

Tunnel furnace

Other Related Categories

219216, 352 78R, 352130, 354317, G03D 1300

Type

Patent

Status

active

Patent number

040472132

Description

ABSTRACT:
A film strip heating method and apparatus for use in photographic systems of the type in which a film strip, contained in a multi-purpose cassette during exposure, processing and projection, is processed by insertion of the cassette in a viewer operative to release a cassette-contained supply of processing fluid, and in which localized heating of the film strip is effected during the processing operation to enhance the diffusion transfer developing process. Heating and temperature sensing components located in the cassette are connected with a control circuit in the viewer automatically upon insertion of the cassette in the viewer.

REFERENCES:
patent: 2576022 (1951-11-01), Land
patent: 3554107 (1971-01-01), McCarthy et al.
patent: 3809464 (1974-05-01), Bennett
patent: 3839726 (1974-10-01), Reichardt

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