Photographic elements containing oxonol filter dye mixture and t

Details Photographic elements containing oxonol filter dye mixture and t Photographic elements containing oxonol filter dye mixture and t

1995-04-26

1997-10-07

Baxter, Janet C.

Radiation imagery chemistry: process, composition, or product th

Radiation sensitive product

Antihalation or filter layer containing

430522, G03C 1815

Patent

active

056746695

ABSTRACT:
A photographic element having a support and a layer containing first and second oxonol dyes, the first dye being a monomethine pyrazolone oxonol dye with each pyrazolone ring having a 1-phenyl group bearing an ortho-substituent selected from sulfo, sulfato, hydroxy, or nitro substituent, and the second dye being a tri- or penta-methine oxonol dye. A method of making a photographic element is also provided. The method comprises maintaining a mixture of at least such a first dye in a carrier medium at a temperature of at least 30.degree. C. for 0.5 hour.

REFERENCES:
patent: 4130430 (1978-12-01), Sugiyama et al.
patent: 5236807 (1993-08-01), Inoue et al.
patent: 5312724 (1994-05-01), Harada et al.

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