Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1980-08-08
1981-08-25
Brown, J. Travis
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430265, 430266, 430267, 430268, 430572, 430602, G03C 108
Patent
active
042860440
ABSTRACT:
A lith-type silver halide photographic material having high sensitivity and providing good dot quality images comprising a support having coated thereon a silver halide emulsion containing a sensitizing dye of dimethine merocyanine type represented by formula (I) and a sensitizing dye represented by formula (II): ##STR1## wherein R.sub.1 represents a sulfoalkyl group, a carboxyalkyl group, a sulfoaralkyl group, or a carboxyaralkyl group; the alkyl moiety of each alkyl group contains up to 4 carbon atoms; R.sub.2 represents a substituted or unsubstituted alkyl group or an aryl group; R.sub.3 represents --(CH.sub.2).sub.n.sbsb.1 CONH(CH.sub.2).sub.m.sbsb.1 OH or --(CH.sub.2).sub.n.sbsb.2 O(CH.sub.2).sub.m.sbsb.2 OH (wherein m.sub.1, m.sub.2, n.sub.1, and n.sub.2 each is 1 to 7; m.sub.1 +n.sub.1 and m.sub.2 +n.sub.2 each is 8 or less); W represents a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, an alkoxy group or a substituted or unsubstituted phenyl group; ##STR2## wherein Z represents a non-metallic atomic group necessary to complete a thiazolidine ring or a 4-thiazoline ring; R.sub.4 and R.sub.5 each represent a substituted or unsubstituted alkyl group, an allyl group, or a substituted or unsubstituted phenyl group; at least one of R.sub.4 and R.sub.5 being a sulfoalkyl group or a carboxyalkyl group; and R.sub.6 represents a hydrogen atom, a substituted or unsubstituted alkyl group, or a substituted or unsubstituted phenyl group.
REFERENCES:
patent: 3703377 (1972-11-01), Sakazume et al.
patent: 4014702 (1977-03-01), Hinata et al.
patent: 4047964 (1977-09-01), Hinata et al.
patent: 4057430 (1977-11-01), Sato et al.
Ikeda Tadashi
Inoue Noriyuki
Kuwabara Ken-ichi
Mihara Yuji
Takei Haruo
Brown J. Travis
Fuji Photo Film Co. , Ltd.
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