Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Silver compound sensitizer containing
Patent
1988-02-26
1989-03-21
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Silver compound sensitizer containing
430591, 430592, 430593, 430594, G03C 102
Patent
active
048142654
ABSTRACT:
A silver halide photographic light-sensitive material containing at least one methine dye which consists of an azulene nucleus, at least one of 10 carbon atoms of which is replaced by chalcogen atom(s) or nitrogen atom(s), and further whose 7-membered ring part is substituted with a methine bond having at the terminal an auxochrome which forms a conjugated resonance chromophore together with 10.pi. electron system of the nucleus is provided.
Silver halide photographic light-sensitive materials of the invention are spectrally sensitized in long wavelength region, and have improved photographic performances such as sharpness and color resolution.
REFERENCES:
patent: 4548886 (1985-10-01), Katagiri et al.
patent: 4738908 (1988-04-01), Oguchi et al.
Hioki Takanori
Takei Haruo
Chea Thorl
Fuji Photo Film Co. , Ltd.
Michl Paul R.
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