Developer apparatus

Details Developer apparatus Developer apparatus

1974-07-03

1977-04-19

Braun, Fred L.

Electric heating

Microwave heating

Tunnel furnace

219216, G03D 700

Patent

active

040191931

ABSTRACT:
Apparatus for developing diazo type films includes an ammonia chamber having an electrically heated heat transfer plate disposed therein dividing the ammonia chamber into upper and lower portions. Two pairs of rollers are disposed at opposite ends of the ammonia chamber in parallel relationship to the transfer plate for transporting the film over the heat transfer plate. A pressure roller is positioned within the upper portion of the ammonia chamber above the heat transfer plate for maintaining the film in intimate contact with the plate to provide for an efficient transfer of the heat between the heat transfer plate and the film. An inlet for an ammonia gas developer is provided in the lower portion of the ammonia chamber, and passages are provided around the heat transfer plate to permit the ammonia gas developer to flow around the plate and into the upper portion of the ammonia chamber while being heated by the plate.

REFERENCES:
patent: 1999965 (1935-04-01), Hall
patent: 2200996 (1940-05-01), Reed
patent: 2219584 (1940-10-01), Von Meister et al.
patent: 2587883 (1952-03-01), Olsson
patent: 3012492 (1961-12-01), Goodman et al.
patent: 3435751 (1969-04-01), Goodman et al.
patent: 3440944 (1969-04-01), Endermann et al.
patent: 3449547 (1969-06-01), Goodman et al.
patent: 3524397 (1970-08-01), Hruby
patent: 3811828 (1974-05-01), Ohta et al.

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