Title:
METHOD FOR MANUFACTURING PRINTING PLATE MATERIAL, METHOD FOR REGENERATING PRINTING PLATE MATERIAL, AND PRINTING PRESS
Document Type and Number:
Japanese Patent JP3534697
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a method for manufacturing a printing plate material capable of being directly formed into a plate from digital data, imparting practically sufficient image quality without requiring a developing process and a developer, and being regenerated to be repeatedly used, and to provide a method for regenerating the printing plate material and a printing press.
SOLUTION: The printing plate material P has a hydrophilic coating layer containing a titanium oxide photocatalyst. A hydrophobic image line 4a is formed on at lest a part of the coating layer by an organic compound having both of a property reacted with or fixed to the surface of the coating layer 3 by heat treatment, and a property decomposed and removed by the irradiation with light having energy higher than the band gap energy of the titanium oxide photocatalyst. Therefore, if the organic compound layer 4 is formed on the coating layer 3 to be heat-treated, the image line 4a can be written, and, if the organic compound layer 4 of a non-heated part is removed, a non-image line 5 can be formed and a function as the printing plate material can be imparted.
Inventors:
Suda, Yasuharu
Isono, Hitoshi
Ikeda, Hiroaki
Isono, Hitoshi
Ikeda, Hiroaki
Application Number:
JP2000362864A
Publication Date:
June 07, 2004
Filing Date:
November 29, 2000
Export Citation:
Assignee:
MITSUBISHI HEAVY IND LTD
International Classes:
B41C1/055; B41C1/10; B41N1/14; B41F7/02; B41N3/00; (IPC1-7): B41C1/10; B41F7/02; B41N1/14
Attorney, Agent or Firm:
高橋 詔男 （外２名）