LAMINATE OF NEGATIVE TONE LITHOGRAPHIC PRINTING PLATE PRECURSOR AND METHOD OF PREPARING NEGATIVE TONE LITHOGRAPHIC PRINTING PLATE
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United States of America Patent
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Issued Date -
Nov 30, 2023
app pub date -
Jun 22, 2023
filing date -
Dec 25, 2020
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Abstract
The present invention provides a laminate of negative tone lithographic printing plate precursors each having at least one layer containing an infrared absorber with a HOMO of −5.43 eV or less on a hydrophilic support, in which in each of the negative tone lithographic printing plate precursors, at least one of an outermost layer surface on a side of the at least one layer containing an infrared absorber with reference to the support or an outermost layer surface on a side opposite to the side of the at least one layer containing an infrared absorber has an arithmetic mean height Sa of 0.3 μm or more and 20 μm or less. The present invention also provides a method of preparing a negative tone lithographic printing plate.
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