Image receiving elements
AssigneePolaroid Corporation
InventorsStanley M. Bloom, Boris Levy
Life of this patent
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Abstract
A receiving element for use in an additive color photographic diffusion transfer process which comprises a transparent support carrying an additive color screen and a layer comprising noble metal silver precipitating nuclei and a polymer; wherein said nuclei are present in a level of about 0.1-0.3 mgs/ft.sup.2, and said polymer is present at a level of from about 0.5 to 5 times the coverage of said nuclei. Preferably, the noble metal is obtained by reduction of a noble metal salt or complex, and more preferably, the noble metal is palladium.
Claims12
An additive diffusion transfer film unit consisting essentially of a transparent support carrying, in order, an additive color screen, a silver precipitating layer comprising noble metal silver precipitating nuclei and a polymer;
- wherein said nuclei are present in a level of about 0.1-0.3 mgs/ft.sup.2 ;
- and said polymer is present at a level of from about 0.5 to 5 times the coverage of said nuclei and said layer being not more than about 2 mgs/ft.sup.2 ;
- wherein said silver precipitating layer is the sole layer containing silver precipitating nuclei;
- and a photosensitive silver halide emulsion layer.
The product as defined in 10 wherein said noble metal salt is palladous chloride and said first metal is provided by stannous chloride.
Dependencies are inferred from the claim text.