Lithographic printing plate material
AssigneeMitsubishi Paper Mills Limited
InventorsYasuo Tsubai, Shigeru Iguchi, Shigeyoshi Suzuki, Tamotsu Iwata
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Abstract
Printing characteristics of a lithographic printing plate material using the silver complex diffusion transfer process are markedly improved by including in layer which contains nuclei for physical development or a layer adjacent thereto at least one member selected from the group consisting of polyfunctional synthetic polymers containing a functional group having an affinity to said nuclei and a functional group providing hydrophilic property and developing agents for silver halide.
Claims22
A lithographic printing plate element using silver complex diffusion transfer process, characterized in that at least one of a layer which contains nuclei for physical development comprising a heavy metal or a sulfide thereof and a layer adjacent to said layer contain a polyfunctional synthetic polymer containing 1 to 20 mole % of functional groups having an affinity to said nuclei and being characterized by having affinity for colloidal heavy metal or a sulfide thereof and 5 to 99 mole % of functional groups providing hydrophilic properties.
Dependencies are inferred from the claim text.