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AssigneeToray Industries, Inc.
InventorsShun-ichi Yanagida, Norimasa Ikeda, Ken Kawamura, Yuzuru Baba, Michihiko Ichikawa, Kouichi Fujimaru
Estimating the term…
A directly imageable raw plate for waterless planographic printing plate, in which a heat insulating layer, heat sensitive layer and ink repellent layer are formed in this order on a substrate, comprising physical properties of 5 to 100 kgf/mm.sup.2 in initial elastic modulus and 0.05 to 5 kgf/mm.sup.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.
A directly imageable raw plate for waterless planographic printing plate, in which a heat insulating layer, a heat sensitive layer comprising a light to heat converting material and an ink repellent layer are formed in this order on a substrate, comprising physical properties of 5 to 100 kgf/mm.sup.2 in initial elastic modulus and 0.05 to 5 kgf/mm.sup.2 in 5% stress as tensile properties of the heat sensitive layer or a laminate comprising the heat sensitive layer and the insulating layer.
A directly imageable raw plate for waterless planographic printing plate, in which a heat insulating layer, heat sensitive layer and ink repellent layer are formed on a substrate, wherein the heat sensitive layer comprises a thin carbon film and a thin metal film of 1727.degree. C. or lower in melting point and 1000 .ANG. or lower in total thickness.
Dependencies are inferred from the claim text.