Microwave-heated film processing apparatus

Details Microwave-heated film processing apparatus Microwave-heated film processing apparatus

1992-01-22

1994-04-12

Rutledge, D.

354324, G03D 1300

Patent

active

053029933

ABSTRACT:
A compact developing apparatus that can quickly modify processing chemistries is disclosed. A web coated with a photograph emulsion or other photosensitive material forms one wall of a processing chamber and processing chemicals are introduced sequentially into the stationary chamber. The heating of the processing chemicals to their required temperatures is accomplished by applying microwave energy to the chemicals upstream of the chamber. The heating is controlled by a programmed digital computer to provide forward and backward feedback control of the microwave output in response to temperature and flow rate measurements.

REFERENCES:
patent: 3149550 (1964-09-01), Lohse et al.
patent: 3744394 (1973-07-01), Firth
patent: 3886576 (1975-05-01), Stoffel
patent: 3936854 (1976-02-01), Smith
patent: 4884093 (1989-11-01), Bohmig
patent: 5194887 (1993-03-01), Farling et al.

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