Photographic processing roller with surface roughened by...

Details Photographic processing roller with surface roughened by... Photographic processing roller with surface roughened by...

G - Physics

03

B

95/9.8

G03B 17/52 (2006.01) B23K 26/08 (2006.01) B44B 7/00 (2006.01)

Patent

CA 1133302

5993 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 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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