Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Antihalation or filter layer containing
Patent
1988-04-11
1989-10-03
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Antihalation or filter layer containing
430223, 430542, 430559, 430562, 430563, 430955, G03C 554, G03C 726
Patent
active
048716545
ABSTRACT:
Photographic silver halide emulsion element for dye image production comprising a support carrying at least one alkali-permeable silver halide hydrophilic colloid emulsion layer incorporating in operative association therewith a dye-releasing compound capable of releasing a diffusible dye moiety from a carrier moiety by a redox reaction, said compound corresponding to the general formula: ##STR1## wherein CAR is an organic carrier moiety capable of undergoing a redox reaction, L is a group cleavable or releasable from the carrier moiety by a redox reaction taking place in alkaline condiitons as a function of the development of a silver halide emulsion layer incorporating such compound, G is a bridging group, each of L.sup.1 and L.sup.2 is a linking member, PUG.sup.1 is a dye (precursor) group, PUG.sup.2 is a dye (precursor) group, an UV-absorber group, or a singlet oxygen scavenger group.
REFERENCES:
patent: 4594316 (1986-06-01), Morimoto et al.
patent: 4663273 (1987-05-01), Van de Sande et al.
Van de Sande Christian C.
Vanmaele Luc J.
Agfa-Gevaert N.V.
Breiner A. W.
Schilling Richard L.
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