Photographic material for the silver dye bleach process

Details Photographic material for the silver dye bleach process Photographic material for the silver dye bleach process

1984-01-16

1986-03-18

Brown, J. Travis

Radiation imagery chemistry: process, composition, or product th

Color imaging process

Using identified radiation sensitive composition in the...

430392, 430559, 430561, G03C 732

Patent

active

045768854

ABSTRACT:
A photographic silver dye bleach material which contains a compound of the formula ##STR1## in which R is a substituted alkyl, R.sub.1 is substituted or unsubstituted alkyl, p is 1 or 2, q is 0 or 1, p+q having to be 1 or 2, and n is 1 to 20, or a salt of this compound.
The benzoquinones used deactivate bleach catalysts which diffuse beyond the silver image area produced by development of the exposed material. The silver dye bleach material containing these compounds is therefore distinguished by high contrast, high sharpness and good color reproduction.

REFERENCES:
patent: 3457074 (1969-07-01), Wilson et al.
patent: 3782948 (1974-01-01), Froehlich et al.
patent: 4242441 (1980-12-01), Nakamura et al.
Japan Patent Abstracts, vol. 1, No. 92, Aug. 25, 1977, p. 2506 E 77.

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