Silver halide elements containing activated precursors to thiocyanato stabilizers
AssigneeEastman Kodak Company
InventorsRoger Lok, Paul Zielinski, Mary Brick
Life of this patent
Estimating the term…
Abstract
This invention relates to a silver halide photographic element comprising a support and a silver halide emulsion layer, said emulsion layer being in reactive association with a thiocyanato compound represented by formula I: PUG-SCN (I) wherein PUG represents a photographically useful group; and wherein upon chemical processing, PUG-SCN releases in a non-image-wise fashion a photographically useful mercaptan, PUG-S.
Claims20
A silver halide photographic element comprising a support and a silver halide emulsion layer, said emulsion layer being in reactive association with a thiocyanato compound represented by formula I:
- PUG-SCN (I)
- wherein PUG represents a photographically useful group;
- and wherein upon chemical processing, PUG-SCN releases in a non-image-wise fashion a photographically useful mercaptan, PUG-S.
The photographic element of claim I wherein the thiocyanato compound is a solid particle dispersion.
Dependencies are inferred from the claim text.