Radiation imagery chemistry: process – composition – or product th – Silver halide colloid tanning process – composition – or product
Patent
1991-12-06
1993-09-14
Schilling, Richard L.
Radiation imagery chemistry: process, composition, or product th
Silver halide colloid tanning process, composition, or product
430566, 430613, 430621, 430611, 430496, G03C 106
Patent
active
052447723
ABSTRACT:
The present invention features a negative-type, silver halide photographic emulsion containing hydrazides that has reduced scratch sensitivity (i.e., the emulsion will have a reduced tendency to develop black scratches on non-exposed areas). The emulsion will resist developing black scratches due to the introduction to the emulsion of hydroquinone and ascorbate. The stability of the emulsion is further enhanced by the addition of sodium formaldehyde bisulfite.
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Mullen Penny M.
Piechowski Allan P.
Pilot John F.
Matalon Jack
Neville Thomas R.
Schilling Richard L.
Sun Chemical Corporation
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