Patent ID: 7462441

Claim:
A planographic printing plate material in the form of a roll comprising a plastic support, and provided thereon, an image formation layer, a hydrophilic layer and an antistatic layer comprising an antistatic agent as a subbing layer, 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, wherein the antistatic layer is formed between the plastic support and the hydrophilic layer.