Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Positive
Patent
1979-11-13
1981-07-21
Louie, Jr., Won H.
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Positive
430564, 430547, G03C 524, G03C 1485
Patent
active
042799872
ABSTRACT:
This invention relates to a light-sensitive, direct positive silver halide photographic material, more particularly to a light-sensitive silver halide photographic material of internal latent image type containing a novel, development-accelerating compound, as used for the formation of a direct positive image by imagewise exposure followed by overall light-exposure before and/or during development or development treatment in the presence of a fogging agent.
REFERENCES:
patent: 2497875 (1950-02-01), Fallesen
patent: 2588982 (1952-03-01), Ives
patent: 2592250 (1952-04-01), Davey et al.
patent: 2983606 (1961-05-01), Rogers
patent: 3227552 (1966-01-01), Whitmore
patent: 3761266 (1973-09-01), Milton
patent: 3761276 (1973-09-01), Evans
patent: 3796577 (1974-03-01), Collier et al.
Ogi Keiji
Sasaki Takashi
Tosaka Yasuo
Konishiroku Photo Industry Co,., Ltd.
Louie, Jr. Won H.
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