Method For Producing Lithographic Printing Plate

Abstract: The purpose of the present invention is to provide a method for producing a lithographic printing plate exhibiting excellent printing durability ink adhesion and stain resistance during printing wherein it is possible to perform one bath treatment. This method for producing a lithographic printing plate is characterized by involving: a step for forming a negative lithographic printing original plate having on a support body a photopolymerizable light sensitive layer containing a urethane acryl hybrid polymer and/or an acryl polymer having a monomer unit derived from a vinyl carbazole compound; a step for exposing the negative lithographic printing original plate for an image; and a step for developing the exposed negative lithographic printing original plate by means of a developing solution which at least contains a compound(component A) represented by formula (I) and water (component B) and has a pH between 4 and 10 and an organic solvent content of less than 5 mass%. Moreover the method is characterized by not involving a water washing step and a gumming step before and after the developing step. In formula (I) R represents a substituted or non substituted phenyl group 1 naphthyl group or 2 naphthyl group and n represents an integer between 4 and 20.

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