Photographic processing roller and a novel method which utilizes

Details Photographic processing roller and a novel method which utilizes Photographic processing roller and a novel method which utilizes

1978-08-30

1980-04-29

Hix, L. T.

Electric heating

Microwave heating

Tunnel furnace

354 86, 219121L, 219121LM, 291211, G03D 902

Patent

active

042003822

ABSTRACT:
An improved cylindrical processing roller is provided for use in a motor driven photographic processing apparatus of the type which spreads a fluid processing composition in a thin, substantially uniform layer between selected layers of integral type self-processable film units while advancing the film units to the exterior of a camera after they have been photoexposed. The improvement in the roller resides in a novel circumferential roller surface roughened by a method which utilizes a pulsed laser to form a plurality of microscopic craters in the surface. The cratered surface provides the roller with a high-friction characteristic for transporting the film units but is insufficiently rough to leave any visually perceptible marks on them.

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patent: 4147425 (1979-04-01), Friedman et al.

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