DIRECT DRAWING TYPE WATERLESS PLANOGRAPHIC ORIGINAL FORM PLATE

摘要

A directly imageable raw plate for a waterless planographic printing plate, in which a heat insulating layer, heat sensitive layer and ink repellent layer are formed in that order on a substrate, comprising physical properties of 5 to 100 kgf/mm<2> in initial elastic modulus and 0.05 to 5 kgf/mm<2> in 5% stress as tensile properties of the heat sensitive layer or the heat insulating layer or the laminate consisting of both the layers. It can be suitably used also for large printing presses and web offset printing presses requiring high printing durability, and makes it possible to obtain an economically advantageous printing plate.