LITHOGRAPHIC PRINTING PLATE PROCESSING DEVICE, PLATE-MAKING SYSTEM FOR LITHOGRAPHIC PRINTING PLATES, LITHOGRAPHIC PRINTING PLATE, PROCESSING METHOD FOR LITHOGRAPHIC PRINTING PLATES, AND PRINTING METHOD

摘要

Provided is a planographic printing plate processing device which prevents edge stain without reducing productivity of a planographic printing plate. A planographic printing plate processing device 28 includes a conveyor 18 which conveys a planographic printing plate precursor or a planographic printing plate along a predetermined conveyance path; and a coating unit 22 which is provided in the conveyance path and includes coating means 20 for coating a region within 1 cm from an end portion of at least one side of the planographic printing plate precursor or the planographic printing plate with a processing liquid that contains a hydrophilizing agent. Further, provided is a plate-making system 1 for a planographic printing plate which includes this planographic printing plate processing device 28.