Planographic printing plate precursor, method of producing same, and printing method using same
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United States of America Patent
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Jan 1, 2019
Grant Date -
Jul 13, 2017
app pub date -
Mar 29, 2017
filing date -
Sep 30, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Provided are a planographic printing plate precursor for furnishing a planographic printing plate in which edge stain does not occur, adhesion to interleaving paper is prevented, and the water width with respect to edge stain at the time of printing is wide; a method of producing the same, and a printing method using the same. The planographic printing plate precursor including: a support; an image recording layer formed on the support; and a water-soluble compound having a molecular weight in a range of 60 to 300 and a solubility of 10 g/L or greater in water at 20° C., in which a content of the compound per unit area in a region on the image recording layer side from an end portion of the planographic printing plate precursor to a portion inside the end portion by 5 mm is greater than a content of the compound per unit area in a second region other than the first region by an amount of 50 mg/m2 or greater.
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