Radiation imagery chemistry: process – composition – or product th – Transfer procedure between image and image layer – image... – Diffusion transfer process – element – or identified image...
Patent
1977-10-27
1979-11-27
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Transfer procedure between image and image layer, image...
Diffusion transfer process, element, or identified image...
430302, 430598, 430531, 430591, 430605, 430606, 430581, 430583, G03C 554, G03C 148
Patent
active
041759656
ABSTRACT:
An improved direct offset printing plate high in photographic speed which utilizes silver complex diffusion transfer is obtained by using as a silver halide emulsion a direct positive silver halide emulsion which comprises silver halide grains which contain at least 80 mol % of bromide, the surface of said silver halide grains having thereon an electron acceptor and at least one sensitizing dyes selected from the group consisting of those having the following general formula (I): ##STR1## and those having the following general formula (II): ##STR2## (wherein Z, R.sub.1 -R.sub.3, M, A and p and q are as defined in the specification).
REFERENCES:
Vanassche, et al., "The Journal of Photographic Science", 22, pp. 121-130, (1974).
Ebato Seigo
Tsubai Yasuo
Yoshida Akio
Louie, Jr. Won H.
Mitsubishi Paper Mills Ltd.
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