Photographic silver halide element containing infrared filter dy

Details Photographic silver halide element containing infrared filter dy Photographic silver halide element containing infrared filter dy

1989-11-27

1990-06-12

Brammer, Jack P.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430944, 544361, 544362, 546198, 548121, 548156, 548159, G03C 184

Patent

active

049332694

ABSTRACT:
A infrared absorbing filter dye that also imparts a cool image tone after processing is disclosed for use in photographic elements. The dye has the formula: ##STR1## where Z and Z' each independently represents the atoms necessary to complete a substituted or unsubstituted: thiazole nucleus, selenazole nucleus, indole nucleus, imidazole nucleus, or quinoline nucleus,
R.sub.1 and R.sub.2 each independently substituted or unsubstituted alkyl or substituted or unsubstituted aryl,
Z" represents the atoms necessary to complete a substituted or unsubstituted heterocyclic ring,
Q represents the atoms necessary to complete a substituted or unsubstituted carbocyclic ring,
m and n each independently represents 0 or 1, and
X represents a counterion as needed to balance the charge of the molecule.

REFERENCES:
patent: 2955939 (1960-10-01), Brooker et al.
patent: 3482978 (1969-12-01), Fumia et al.
patent: 3623881 (1971-11-01), Fumia, Jr. et al.
patent: 3671648 (1972-06-01), Fumia, Jr. et al.
patent: 3672906 (1972-06-01), Brooker et al.
patent: 3758461 (1973-09-01), Fumia, Jr. et al.
patent: 4536473 (1985-08-01), Mihara et al.
patent: 4581325 (1986-04-01), Kitchin et al.

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