Photographic processing roller having a surface roughened by...

Details Photographic processing roller having a surface roughened by... Photographic processing roller having a surface roughened by...

G - Physics

03

B

95/9.8

G03B 17/52 (2006.01) B23H 9/04 (2006.01)

Patent

CA 1115576

5922 ABSTRACT OF THE DISCLOSURE 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 a film unit to the exterior of a camera after photoexposure. The improvement in the roller resides in a novel circumferential roller surface roughened by electrical discharge machining techniques to provide the roller with a high-friction characteristic for transporting the film units while being insufficiently rough to leave any visually perceptible marks on a film unit.

326735

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