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Title:
METHOD OF MAKING LITHOGRAPHIC PRINTING PLATE
Document Type and Number:
Japanese Patent JP2009244777
Kind Code:
A
Abstract:

To provide a method of making a lithographic printing plate which achieves development with an aqueous developer solution of 2.0 to 10.0 in pH, and also has superior sensitivity and developability, a fast developing speed, and superior printing durability.

The method of making the lithographic printing plate is characterized in that after an original plate of the lithographic printing plate having a photosensitive layer containing (A) sensitizing coloring matter, (B) a polymerization initiator, (C) a polymerizable compound, (D) a binder, and (E) a phosphonium compound and a protection layer on a base in this order is exposed to an image using a laser, the protection layer and the photosensitive layer of an unexposed portion are removed at the same time using a developing solution containing a hydrophilic polymer.


Inventors:
AOSHIMA TOSHIE
OHASHI HIDEKAZU
ARITOMI TAKASHI
Application Number:
JP2008093994A
Publication Date:
October 22, 2009
Filing Date:
March 31, 2008
Export Citation:
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Assignee:
FUJIFILM CORP
International Classes:
G03F7/32; G03F7/00; G03F7/004; G03F7/027; G03F7/029; G03F7/11
Attorney, Agent or Firm:
Takeshi Takamatsu
Kiyozumi Yazawa