Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1994-11-22
1995-09-19
Neville, Thomas R.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430598, 430435, G03C 106
Patent
active
054514860
ABSTRACT:
Photographic film nucleating agents comprising aryl sulfonamidophenyl hydrazides containing alkene, alkadienyl, alkapolyenyl or cycloalkenyl substituted pyridinium functionality; these nucleators produce better dot quality and superior contrast characteristics in image-wise exposed film elements and wider compatibility with standard rapid access developers and obviate the need to include boosters in the film or in the developer.
REFERENCES:
patent: 4975354 (1990-12-01), Machonkin et al.
patent: 4994365 (1991-02-01), Looker et al.
patent: 5279919 (1994-06-01), Okamura et al.
patent: 5316890 (1994-05-01), Okamura et al.
patent: 5378578 (1995-01-01), Hoshimiya et al.
Husain Syeda
Mullen Penny M.
Pilot John F.
Waxman Burton H.
Matalon Jack
Neville Thomas R.
Sun Chemical Corporation
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