Bright safe light handleable high contrast photographic...

Details Bright safe light handleable high contrast photographic... Bright safe light handleable high contrast photographic...

G - Physics

03

C

96/126

G03C 1/10 (2006.01) G03C 1/06 (2006.01) G03C 1/16 (2006.01)

Patent

CA 1339297

A bright light handleable, high contrast, negative acting photographic element having a reduced propensity to formation of pepper fog in which the silver halide emulsion is associated with a hydrazine and a monomethine-benzthiazole compound of the formula: (see fig. I) in which: one of R1 and R2 represents an organic group containing an acid function and the other is selected from hydrogen, an optionally substituted alkyl group and an organic group containing an acid function.

603412

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