Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1987-06-09
1989-04-04
Michl, Paul R.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430384, 430385, 430552, G03C 738
Patent
active
048186724
ABSTRACT:
A silver halide photographic light-sensitive material containing a novel cyan dye forming coupler is disclosed. The cyan dye forming coupler is represented by the following formula. ##STR1## In the formula R.sub.1 and R.sub.2 are each a substituent, and X is a group capable of being splitted off from the coupler residue upon reaction of the coupler residue with the oxydized product of a color developing agent; and the total number of carbon atoms contained in the groups represented by R.sub.1, R.sub.2 and X is from 8 to 50. The spectral absorption characteristics of cyan dye images formed by the coupler of the invention are so sharp and steep that color reproduction can be achieved very advantageously.
REFERENCES:
patent: 2353754 (1944-07-01), Peterson
patent: 2421693 (1947-06-01), Harriman
patent: 4451559 (1984-05-01), Sato et al.
patent: 4455367 (1984-06-01), Seoka et al.
Kimura Toshihiko
Masukawa Toyoaki
Nakayama Noritaka
Ninomiya Hidetaka
Tsuda Yasuo
Bierman Jordan B.
Buscher Mark R.
Konishiroku Photo Industry Co,., Ltd.
Michl Paul R.
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