| 摘要 |
A plate making method comprising the steps of: (1) ejecting a plate making ink onto a printing plate material via an ink-jet recording method, (2) irradiating actinic energy rays onto the ejected plate making ink, and (3) forming an image via evaporating of an ink solvent followed by drying, wherein the plate making ink comprises water and an actinic energy ray curable polymer, having a plurality of side chains with a main chain, and cross-linking can be induced among the side chains by irradiation of actinic energy ray radiation, and having a polymerization degree of 200-4000, in a range of 0.8%-5.0 weight % based on the total weight of the ink.
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