Light-sensitive material for tanning development comprising pret

Details Light-sensitive material for tanning development comprising pret Light-sensitive material for tanning development comprising pret

1979-04-20

1980-11-11

Kimlin, Edward C.

Radiation imagery chemistry: process, composition, or product th

Silver halide colloid tanning process, composition, or product

430510, 430631, 430325, 252444, G03F 702, G03C 140

Patent

active

042333920

ABSTRACT:
In a light-sensitive material for tanning development containing unhardened or only slightly hardened gelatin silver halide emulsion layers, the silver content required to obtain maximum density is reduced by incorporating carbon black pretreated with water-miscible compounds which have a higher affinity for carbon black than gelatin. Suitable treatment may be provided by at least two of the following: poly-n-vinyl lactams, polyalkylene oxide derivatives, water-miscible compounds containing at least two OH groups, and polyalkylene oxides with a molecular weight of at least 400.

REFERENCES:
patent: 1782493 (1930-11-01), Van Loon
patent: 2596756 (1952-05-01), Yutzy et al.

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