Radiation imagery chemistry: process – composition – or product th – Post imaging processing – Developing
Patent
1977-04-15
1979-11-20
Brown, Travis
Radiation imagery chemistry: process, composition, or product th
Post imaging processing
Developing
430382, 430544, 430566, 430957, G03C 700, G03C 140
Patent
active
041749693
ABSTRACT:
For controlling in a color photographic material the gradation, graininess, sharpness, edge and interimage effect and thus improving the overall color reproduction thioether DIR compounds of the following formula are particularly useful: ##STR1## in which X is a group that if split off together with the sulfur atom forms a diffusing development inhibiting mercaptan, Y represents --O--, ##STR2## or --S--, Z represents the ring members completing a 6-membered heterocyclic ring, R.sup.1 is an aliphatic, araliphatic or aromatic hydrocarbon group, a heterocyclic group or acyl, and R.sup.2 is the same as R.sup.1 or hydrogen.
REFERENCES:
patent: 3227554 (1966-01-01), Barr et al.
patent: 3938996 (1976-02-01), Fujiwhara et al.
patent: 3958993 (1976-05-01), Fujiwhara et al.
patent: 3961959 (1976-06-01), Fujiwhara et al.
patent: 4046574 (1977-09-01), Odenwalder et al.
Odenwalder Heinrich
Ranz Erwin
AGFA-Gevaert A.G.
Brown Travis
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