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Patent Searching and Data


Title:
PHOTOSENSITIVE PLANOGRAPHIC PRINTING PLATE MATERIAL
Document Type and Number:
Japanese Patent JP2007163648
Kind Code:
A
Abstract:

To provide a photosensitive planographic printing plate material suitable for exposure to laser light at a light emission wavelength in the range from 350 nm to 450 nm and having preferable safelight property as well as excellent printing durability and dot reproducibility.

The photosensitive planographic printing plate material has a photosensitive layer containing (A) a photopolymerizable initiator, (B) a polymerizable ethylenic double bond-containing compound, (C) a dye having an absorption maximum wavelength of 350 to 450 nm, and (D) a polymer binder, on a support. The photosensitive layer contains, as the dye (C) having the absorption maximum wavelength of 350 nm to 450 nm, a compound that emits light at a longer wavelength than the absorption maximum wavelength for a life time of 1 ns or more, and further contains (E) such a compound that increases the absorption (abs) of the photosensitive layer at the light emission wavelength of the above emission light by 0.1 or more when the compound is contained by 5 mass% into the photosensitive layer.


Inventors:
KUROKI TAKAAKI
Application Number:
JP2005357536A
Publication Date:
June 28, 2007
Filing Date:
December 12, 2005
Export Citation:
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Assignee:
KONICA MINOLTA MED & GRAPHIC
International Classes:
G03F7/00; G03F7/004; G03F7/029