Electric heating – Microwave heating – Tunnel furnace
Patent
1977-04-25
1980-04-15
Hix, L. T.
Electric heating
Microwave heating
Tunnel furnace
354299, 219216, 219388, G03B 1750, G03D 700
Patent
active
041981456
ABSTRACT:
An apparatus for developing a fixed photographic image on a light-sensitive, heat-developable emulsion, coated on a surface of a film base. The apparatus comprises a light source to expose the emulsion to an image of light to record a latent image on the emulsion and film support means to support the film by a gas bearing of flowing gas supplied to the emulsion and film base surfaces. The gas bearing is established by spacing the support means with respect to the film such that the pressure of gas supplied to the respective film surfaces supports the film and the film passes through the development apparatus. The support means includes heating means to heat the gas supplied to the film surfaces. The spacing is such that heat is transferred between the heating means and the respective film surfaces essentially by heat conduction to develop the fixed image.
REFERENCES:
patent: 3457075 (1969-07-01), Morgan et al.
patent: 3496332 (1970-02-01), Lunde
patent: 3585917 (1971-06-01), Griffith
patent: 3798790 (1974-03-01), Roman
patent: 3863360 (1975-02-01), Stievenar et al.
patent: 4052732 (1977-10-01), Meadows
Cohen Samuel
Hix L. T,.
Lazar Joseph D.
Mathews Alan
RCA Corporation
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