METHOD FOR MANUFACTURING ORIGINAL PRINTING PLATE FOR LITHOGRAPHIC PRINTING PLATE

• Main Authors: MATSUDA TOSHINORI, TSUSHIMA TAKAAKI, KOJIMA KAZUNORI, MIYAZAKI HIROKO, KOIDE TETSUHIRO, KURODA HIROYUKI, SUZUKI YUKO
• Format: Patent
• Language: English
• Published: 28.10.2004
• Edition: 7
• Subjects: APPARATUS SPECIALLY ADAPTED THEREFOR; CINEMATOGRAPHY; ELECTROGRAPHY; HOLOGRAPHY; LINING MACHINES; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING,INKING, DAMPING, OR THE LIKE; MATERIALS THEREFOR; ORIGINALS THEREFOR; PERFORMING OPERATIONS; PHOTOGRAPHY; PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES,e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTORDEVICES; PHYSICS; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM; PRINTING; PRINTING PLATES OR FOILS; STAMPS; TRANSPORTING; TYPEWRITERS

PROBLEM TO BE SOLVED: To provide a method for manufacturing an original printing plate for a lithographic printing plate with a low manufacturing cost and a residual solvent. SOLUTION: The method for manufacturing the original printing plate for the lithographic printing plate with a photosensitive layer on a substrate, comprises (a) a process wherein a continuous substrate is coated with a photosensitive composition while the substrate is carried to form a coated body with a coating layer of the photosensitive composition on the substrate, (b) a process wherein the coated body is dried while it is carried, (c) a process wherein the coated body is wound up to form a wound body so that there exists a gap at least in a part between the coating layer and the back surface of the substrate, and (d) a process wherein the wound body is treated for curing. It is preferable that the photosensitive layer is composed of a hydrophilic material with a phase separating structure of a hydrophilic polymer and a lipophilic polymer, and the hydrophilic material is changeable to lipophilic with a laser irradiation. COPYRIGHT: (C)2005,JPO&NCIPI