Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1988-02-10
1990-11-13
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430574, 430585, 430588, G03C 129, G03C 118
Patent
active
049701410
ABSTRACT:
A silver halide photographic emulsion containing at least one of the compounds of formula (I) and at least one of the compounds of formula (III), or further containing at least one of the compounds of formula (II) besides the above at least two compounds: ##STR1## wherein R.sub.0, R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5, R.sub.6, R.sub.7, R.sub.8, R.sub.9, R.sub.10 and R.sub.11 each represent various groups; X.sub.1.sup..crclbar., X.sub.2.sup..crclbar. and X.sub.3.sup..crclbar. each represent counter anions; l, m and n are each 0 or 1; Z.sub.1 and Z.sub.2 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted benzene rings, or unsubstituted or substituted naphthalene rings; and Z.sub.3 and Z.sub.4 each represent nonmetal atomic groups necessary for forming unsubstituted or substituted naphthalene rings.
The silver halide photographic emulsions are enhanced in spectral light-sensitivity of green wavelength region, and photographic light-sensitive materials prepared using these emulsions are not only enhanced in spectral sensitivity of green short wavelength region, but also excellent in inhibiting fog increase and sensitivity lowering during preservation.
REFERENCES:
patent: 3580723 (1971-05-01), Sato et al.
patent: 3864134 (1975-02-01), Ueda et al.
patent: 4362813 (1982-12-01), Mihara et al.
patent: 4551424 (1985-11-01), Ikeda et al.
patent: 4571380 (1986-02-01), Noguchi et al.
Ikegawa Akihiko
Ohashi Yuichi
Okazaki Masaki
Buscher Mark R.
Fuji Photo Film Co. , Ltd.
Michl Paul R.
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