Invention Grant
US07316891B2 Method of developing a heat-sensitive lithographic printing plate precursor with a gum solution 有权
用胶溶液开发热敏平版印刷版原版的方法

Method of developing a heat-sensitive lithographic printing plate precursor with a gum solution
Abstract:
A method of making a lithographic printing plate is disclosed which comprises the steps of providing a lithographic printing plate precursor comprising (i) a support having a hydrophilic surface or which is provided with a hydrophilic layer and (ii) a coating provided thereon which comprises hydrophobic thermoplastic polymer particles; exposing the coating to heat, thereby inducing coalescence of the thermoplastic polymer particles at exposed areas of the coating; developing the precursor by applying a gum solution to the coating, thereby removing non-exposed areas of the coating from the support. According to the above method, the plate precursor can be developed and gummed in a single step.
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