Print method for lithographic plate and lithographic plate for said method

Abstract

The present invention provides a method for printing, comprising the steps of: a) developing an image forming surface of a planographic printing plate; b) after the developing, hydrophilizing a portion of a vicinity of an edge of the image forming surface; c) after the hydrophilizing, adhering ink to the image forming surface; and d) transferring the ink to a printing target.

Description

field of invention [0001] The present invention relates to a printing method comprising the steps of developing a lithographic printing plate, attaching ink to the lithographic printing plate, and transferring the ink to an object to be printed, and relates to the process of printing by this printing method. Lithographic edition. Background technique [0002] In recent plate-making methods (including electrophotographic plate-making methods), planographic printing plates such as photosensitive printing plates and thermosensitive printing plates are widely used in order to facilitate the automation of the plate-making process. Generally, lithographic printing plates are surface-treated with graining treatment, anodizing treatment, silicate treatment and chemical processing treatment alone or in appropriate combination on a support such as a sheet-like or roll-like aluminum plate. This surface-treated support is then coated with a photosensitive layer or a heat-sensitive laye...

AI Technical Summary

Problems solved by technology

Before or after a conversion operation, some lithographic printing plates may become unavailable in product form, resulting in waste of lithographic printing plate material

In addition, during changeover operations, the lithographic printing plates cannot be processed during this period because the processing line must be stopped, thus wasting time