(19)
(11) EP 2 236 293 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
03.10.2012 Bulletin 2012/40

(43) Date of publication A2:
06.10.2010 Bulletin 2010/40

(21) Application number: 10003001.4

(22) Date of filing: 22.03.2010
(51) International Patent Classification (IPC): 
B41C 1/10(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
AL BA ME RS

(30) Priority: 31.03.2009 JP 2009085239

(71) Applicant: FUJIFILM Corporation
Tokyo 106-8620 (JP)

(72) Inventor:
  • Shiraishi, Yuichi
    Shizuoka (JP)

(74) Representative: HOFFMANN EITLE 
Patent- und Rechtsanwälte Arabellastrasse 4
81925 München
81925 München (DE)

   


(54) Lithographic printing plate precursor


(57) The present invention provides an infrared-sensitive positive-working photosensitive lithographic printing plate precursor that exhibits both an excellent chemical resistance in the image area and an excellent developability. This positive-working photosensitive lithographic printing plate precursor comprises a support having a hydrophilic surface, and a recording layer disposed on the support and comprising an alkali-soluble or alkali-swellable polymer having a structural unit represented by general formula (1) below, a novolac resin, an infrared absorber, and at least one member selected from aromatic group-containing sulfonium salts and iodonium salts

wherein R1 represents a hydrogen atom or methyl group, X represents a single bond, -COO-, or -CONH-, Ar1 and Ar2 each represent an optionally substituted aromatic group or heteroaromatic group, and Y represents - SO2NH- or -NHSO2-.





Search report












Search report