Planographic printing plate material, printing plate and printing method

摘要

An object of the invention is to provide a planographic printing plate material providing excellent initial ink receptivity, excellent printing durability and greatly improved registering property, a printing plate prepared therefrom, and a printing method employing the printing plate. The forgoing printing plate material comprising a hydrophilic layer on one surface and a backing layer on the other surface of a plastic sheet support, wherein the backing layer contains an organic matting agent and a polymer having a glass transition temperature (Tg) of -30 to 40 °C is used to attain the object.