Light-absorbing dye for use in photography

Details Light-absorbing dye for use in photography Light-absorbing dye for use in photography

1976-04-12

1977-08-16

Welsh, John D.

Gas separation: apparatus

Electric field separation apparatus

Electrode retaining or supporting means

96 87R, G03C 184

Patent

active

040423972

ABSTRACT:
Dyes are described corresponding to the following formula for use as light-absorbing dyes in silver halide photographic material: ##STR1## wherein: Z represents the atoms necessary to form a barbituric acid nucleus (p=1 or 2), a phenyl group (p=0 or 1) or a pyrrole ring (p=0)

REFERENCES:
patent: 3853563 (1974-12-01), Depooter et al.

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