Storage stability of an imaging element for making a printing plate according to the silver salt diffusion transfer process
AssigneeAgfa-Gevaert
InventorsPaul Coppens, Eric Hoes, Jules Berendsen, Rik Vandenbruwaene
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Abstract
The present invention provides an imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei and (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer, characterized in that said photosensitive layer comprises a substituted or unsubstituted 1-phenyl-3-pyrazolidone in an amount between 0.2 mg/g and 15 mg/g of silver halide expressed as an equivalent amount of silver nitrate.
Claims5
An imaging element comprising in the order given on a hydrophilic surface of a support (i) an image receiving layer containing physical development nuclei and (ii) a photosensitive layer containing a silver halide emulsion being in water permeable relationship with said image receiving layer, characterized in that said photosensitive layer comprises 1-phenyl-4-hydroxymethyl-4-methyl-3-pyrazolidone or 1-phenyl-4-methyl-3-pyrazolidone in an amount between 0.2 mg/g and 15 mg/g of silver halide expressed as an equivalent amount of silver nitrate.
Dependencies are inferred from the claim text.