Eastman-kodak Company

Yoshiaki Shekiguchi

Eiji Hayakawa

Koji Hayashi

Masamichi Kamiya

A negative-working, infrared radiation-sensitive lithographic printing plate precursor is exposed and processed on-press to provide a lithographic printing plate. This precursor has an infrared radiation-sensitive imageable layer comprises free radical imaging chemistry; an infrared radiation absorber; a particulate primary polymeric binder comprising polyalkylene oxide segments having an average particle size (D) of at least 50 nm and up to and including 1000 nm; and a particulate secondary resin having an average particle size (D) of at least 3 &#x3bc;m and up to and including 10 &#x3bc;m. The imageable layer has an average dry thickness (t) of at least 1 &#x3bc;m and up to and including 4 &#x3bc;m and satisfies Equation (1):/1.4&#x3e;&#x2003;&#x2003; (1)and the average dry thickness (t) is defined by Equation (2):&#x2003;&#x2003; (2)wherein w is the dry coverage of the imageable layer in g/mand r is 1 g/cm.

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Kumagaya, Japan

Yoshiaki Shekiguchi