LITHOGRAPHIC PRINTING METHOD
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United States of America Patent
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Issued Date -
Oct 27, 2022
app pub date -
Jun 24, 2022
filing date -
Jun 24, 2022
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a lithographic printing method including a preparing step of preparing a lithographic printing plate precursor which includes an aluminum support, and an image recording layer containing an acid color developing agent and an acid generator on the aluminum support, an exposing step of exposing the lithographic printing plate precursor, a developing step of supplying acidic dampening water to the exposed lithographic printing plate precursor and removing a non-image area of the image recording layer, and a printing step, in which the aluminum support includes an anodized aluminum film, the anodized film has micropores, and a value ΔS is 15% or greater and 60% or less.
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