Letterpress printing original plate for laser engraving and a letterpress printing plate obtained therefrom
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United States of America Patent
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Feb 12, 2013
Grant Date -
Oct 28, 2010
app pub date -
Dec 22, 2008
filing date -
Dec 26, 2007
priority date (Note) -
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status (Latency Note)
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Abstract
To provide a photosensitive resin composition which is a material for a printing original plate for laser engraving which generates no printing deficiencies and from which a printing plate with a satisfactory resolution can be produced. A printing original plate for laser engraving where image is formed by irradiation of laser beam to form a printing plate, characterized in that the photosensitive resin composition layer consists of a photosensitive resin composition in which soluble polyamide or soluble polyether urethane urea, ethylenic unsaturated monomer and photopolymerization initiator are essential ingredients and the amount of (meth)acryloyl group in the photosensitive resin composition is 0.25 to 0.40 mol per 100 g of the photosensitive resin composition.
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