Radiation imagery chemistry: process – composition – or product th – Radiation sensitive product – Two or more radiation-sensitive layers containing other than...
Patent
1982-02-18
1983-12-27
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Radiation sensitive product
Two or more radiation-sensitive layers containing other than...
430212, 430214, 430217, 430223, 430505, 430506, G03C 554, G03C 140, G03C 110
Patent
active
044231423
ABSTRACT:
Photographic material and process suitable for producing by diffusion transfer a color image and comprising on a support at least two differently spectrally sensitive negative working silver halide emulsion layers (FIG. 3, layers 12, 14 and 16) and having operatively associated with each of said emulsion layers a different non-diffusing dye providing compound that is initially immobile in an alkali-permeable colloid medium and wherefrom by reduction in alkaline medium a dye or dye precursor can be split off in diffusible state, wherein at least one of said negative working silver halide emulsion layers is associated in water-permeable relationship with a visible light-sensitive direct-positive emulsion layer (FIG. 3, layers 13 and 15) whereby interimage effects can be obtained.
REFERENCES:
patent: 4139379 (1979-02-01), Chasman et al.
patent: 4232107 (1980-11-01), Janssens
patent: 4353975 (1982-10-01), Janssens et al.
Agfa-Gevaert N.V.
Breiner A. W.
Schilling Richard L.
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