Scanning exposing type lithographic printing plate with 1.5 wt.

Details Scanning exposing type lithographic printing plate with 1.5 wt. Scanning exposing type lithographic printing plate with 1.5 wt.

1991-03-19

1993-04-13

Schilling, Richard L.

Radiation imagery chemistry: process, composition, or product th

Transfer procedure between image and image layer, image...

Diffusion transfer process, element, or identified image...

430227, 430229, 430230, 430231, 430232, 430249, 430642, 430935, 430939, G03C 554, G03F 706

Patent

active

052022188

ABSTRACT:
The present invention provides a lithographic printing plate material for silver complex diffusion transfer process by scanning type exposure which comprises a film support and, provided thereon, at least a silver halide emulsion layer and a surface physical development nuclei layer, wherein water content in the whole lithographic printing plate material including the support is 1.5% or less. Preferably, the silver halide emulsion comprises about 95 mol % or more of silver chloride, 90% by weight or more of the silver halide grains have a size within .+-.40% of average grain size, the silver halide grains have an average grain size of about 0.3.mu.-about 1.0.mu., and the surface of the grains is replaced with about 0.1 mol %-about 3.0 mol % of an iodide per 1 mol of the silver halide.

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