Importance

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Abstract

Provided is a method for processing an on-press development-type lithographic printing plate precursor and a printing method which do not cause edge stains and in which there are no stains in an unexposed portion other than an edge portion, and a lithographic printing plate having a wide water width during printing with respect to the edge stains is provided, through a method for processing an on-press development-type lithographic printing plate precursor having an image recording layer on a support in which a region within 1 cm from an end portion on a plate surface of the lithographic printing plate precursor is coated with a processing liquid containing a hydrophilizing agent after subjecting the on-press development-type lithographic printing plate precursor to image exposure, before mounting the on-press development-type lithographic printing plate precursor on a printing press, and which is performed such that a coating member does not come into contact with the plate surface, and a printing method.

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First Claim