Radiation imagery chemistry: process – composition – or product th – Color imaging process – Laser or radiation exposure other than visible light
Patent
1995-04-18
1996-10-15
Chea, Thorl
Radiation imagery chemistry: process, composition, or product th
Color imaging process
Laser or radiation exposure other than visible light
430401, 430434, 430570, 430577, 430963, G03C 120
Patent
active
055653073
ABSTRACT:
Disclosed are a silver halide photographic material containing at least one merocyanine color-sensitizing dye having a particular structure of formula (I) ##STR1## wherein R.sub.1 and R.sub.2 each represent an alkyl group having a residue capable of making the compound soluble in water as a free acid or salt; V.sub.1, V.sub.2, V.sub.3 and V.sub.4 each represent a hydrogen atom or a monovalent substituent, provided that these substituents (V.sub.1, V.sub.2, V.sub.3, V.sub.4) are not bonded to each other to form a ring and that the sum of the molecular weights of V.sub.1, V.sub.2, V.sub.3 and V.sub.4 is from 4 to 50; L.sub.1, L.sub.2, L.sub.3 and L.sub.4 each represent an optionally substituted methine group; M.sub.1 represents a charge-neutralizing pair ion; and m.sub.1 represents a number of from 0 to 4 that is necessary for neutralizing the intramolecular charge.
REFERENCES:
patent: 4917997 (1990-04-01), Ikeda et al.
patent: 5116722 (1992-05-01), Callant et al.
patent: 5348850 (1994-09-01), Yushida et al.
Hioki Takanori
Oya Toyohisa
Yamamoto Seiichi
Chea Thorl
Fuji Photo Film Co. , Ltd.
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