Photosensitive flexographic printing original plate
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United States of America Patent
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Nov 20, 2012
Grant Date -
Jul 1, 2010
app pub date -
Dec 5, 2008
filing date -
Jun 11, 2008
priority date (Note) -
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Abstract
The present invention provides a photosensitive flexographic printing original plate provided with a heat sensitive mask layer having high light blocking effect and durability yet prepared as a thin film. A photosensitive flexographic printing original plate including at least (A) a supporting member, (B) a photosensitive resin layer, (C) a protective layer and (D) a heat sensitive mask layer that are successively laminated, wherein the heat sensitive mask layer (D) contains carbon black and, as a dispersion binder therefor, a butyral resin as well as polyamide containing polar group selected from the group consisting of polyamide containing a tertiary amine group, polyamide containing a quaternary ammonium salt group, polyamide containing an ether group and polyamide containing a sulfonic group.
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