Planographic printing plate material and printing method

Details Planographic printing plate material and printing method Planographic printing plate material and printing method

2006-02-21

2008-12-09

Walke, Amanda C. (Department: 1795)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Making printing plates

C430S270100, C430S271100, C430S434000, C430S435000, C430S494000, C430S944000, C430S945000

Reexamination Certificate

active

07462441

ABSTRACT:
An object of the present invention is to provide a planographic printing plate material as well as a printing method in which excellent properties of on-press development, exposure image visualization, scratch resistance, background contamination resistance, and printing durability are exhibited. Disclosed is a planographic printing plate material possessing a hydrophilic layer and an image formation layer provided on a plastic support, wherein the image formation layer contains polyolefin wax having a melting point of 105-120° C. and a melt viscosity of 1-1200 mPa·s, the hydrophilic layer contains spherical silica particles having a particle diameter of 5.0-7.0 μm, and a content ratio of the spherical silica particles having a particle diameter of 5.0-7.0 μm is not less than 60% by volume, based on a total volume of particles having a particle diameter of 2-10 μm contained in the hydrophilic layer.

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