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Title:
METHOD FOR MAKING LITHOGRAPHIC PRINTING PLATE
Document Type and Number:
Japanese Patent JP2002307646
Kind Code:
A
Abstract:

To provide a method for making a lithographic printing plate, having a hydrophilic layer containing a hydrophilic binder as a non-image part, the unnecessary image part and the soil of which are cleaned with the help of a plate face correction fluid containing a chemical compound which changes to a hydrophilic and water-resistant film by application and drying, and which retains a suitability for printing and plate making by a scan image exposure system using a laser beam.

This method for making a lithographic printing plate is characterized in that the unnecessary image part of the lithographic printing plate having a hydrophilic layer containing a hydrophilic binder as a non-image part and the soil are cleaned with the help of the plate face correction fluid containing a chemical compound which changes to a hydrophilic and water- resistant film by application and drying. The correction fluid preferably contains an organic polymer integrating resin and a hydrophilic sol-like inorganic particle and further, preferably contains an organic hydrophilic polymer which has at least either of a hydroxyl group, a carboxylic acid group, a sulfonic acid group and an amide group and a crosslinking component which can crosslink this polymer.


Inventors:
ENDO AKIHIRO
Application Number:
JP2001117326A
Publication Date:
October 23, 2002
Filing Date:
April 16, 2001
Export Citation:
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Assignee:
FUJI PHOTO FILM CO LTD
International Classes:
B41C1/00; B41N3/00; G03F7/00; G03F7/40; (IPC1-7): B41C1/00; B41N3/00; G03F7/00; G03F7/40
Attorney, Agent or Firm:
Shohei Oguri (4 outside)