Filter dyes for photographic elements

Details Filter dyes for photographic elements Filter dyes for photographic elements

1995-11-30

1999-07-13

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430522, G03C 183

Patent

active

059225238

ABSTRACT:
A photographic element contains a filter dye of the Formula (I): ##STR1## wherein R.sup.1 -R.sup.4 each independently represent a substituted or unsubstituted alkyl group, a substituted or unsubstituted aryl group or a substituted or unsubstituted heteroaryl group; L.sup.1, L.sup.2 and L.sup.3 each independently represent substituted or unsubstituted methine groups; M.sup.+ represents a proton or an inorganic or organic cation.

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patent: 5274109 (1993-12-01), Texter
patent: 5326687 (1994-07-01), Texter
patent: 5459265 (1995-10-01), Wariishi et al.

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