Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Identified radiation sensitive composition with color...
Patent
1990-09-11
1991-12-24
Bowers, Jr., Charles L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Identified radiation sensitive composition with color...
430223, 430564, 430955, 430957, 430958, 430959, G03C 106
Patent
active
050752081
ABSTRACT:
A silver halide photographic material containing a compound having a structure represented by formula (I) ##STR1## wherein EAG represents a group capable of accepting an electron from a reducing material; E represents an electron-attracting group; R.sup.3 represents an atomic group necessary for forming a 5-membered to 8-membered single ring or condensed ring by combining with the carbon atom carrying EAG and E; ETG represents an electron-transmitting group; n represents 0 or 1; R.sup.1 and R.sup.2, which may be the same or different, each represents a hydrogen atom, a hydrocarbon group, a heterocyclic group, or a single bond for forming a ring with EAG; Time represents a group releasing PUG upon cleavage of the bond between the carbon atom carrying R.sup.1 and R.sup.2 and Time; t represents 0 or 1; and PUG represents a photographically useful group.
REFERENCES:
patent: 4420554 (1983-12-01), Ohashi et al.
patent: 4783396 (1988-11-01), Nakamura et al.
Koya Keizo
Nakamura Koki
Watanabe Hiroyuki
Yoshioka Yasuhiro
Baxter Janet C.
Bowers Jr. Charles L.
Fuji Photo Film Co. , Ltd.
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