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Title:
LITHOGRAPHIC PRINTING PLATE MATERIAL AND PROCESS FOR PRODUCING THE SAME
Document Type and Number:
WIPO Patent Application WO/2007/083542
Kind Code:
A1
Abstract:
This invention provides negative- and positive-working lithographic printing plate materials, which can realize excellent sensitivity and print quality and can be exposed to a near infrared laser beam, and a process for producing the same. The negative- and positive-working lithographic printing plate materials comprise a hydrophilic support and an image forming layer provided on the hydrophilic support, the image forming layer undergoing a change in alkali solubility upon exposure to a near infrared laser beam, and are characterized in that the image forming layer contains, as an infrared absorbing coloring matter, a compound that is represented by any of general formulae (IRD1), (IRD2) and (IRD3) and has a maximum absorption wavelength of 700 to 900 nm in methyl ethyl ketone.

Inventors:
MAEHASHI TATSUICHI (JP)
Application Number:
PCT/JP2007/050140
Publication Date:
July 26, 2007
Filing Date:
January 10, 2007
Export Citation:
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Assignee:
KONICA MINOLTA MED & GRAPHIC (JP)
MAEHASHI TATSUICHI (JP)
International Classes:
G03F7/004; G03F7/00; G03F7/038; G03F7/039; G03F7/09
Foreign References:
JPH0720629A1995-01-24
JP2002080764A2002-03-19
JPH10268512A1998-10-09
JPH11125898A1999-05-11
JP2000003031A2000-01-07
JPH0643633A1994-02-18
JP2000206685A2000-07-28
JP2000171975A2000-06-23
JP2004054009A2004-02-19
JP2003001953A2003-01-08
JP2002122729A2002-04-26
JP2001330924A2001-11-30
JP2000160042A2000-06-13
JPH05505641A1993-08-19
JPH05148258A1993-06-15
JPH03126581A1991-05-29
JPS59172550A1984-09-29
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