Lithographic printing method and presensitized plate

Details Lithographic printing method and presensitized plate Lithographic printing method and presensitized plate

2007-10-16

2007-10-16

Lee, Sin (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

C430S275100, C430S276100, C430S277100, C430S278100, C430S279100, C430S280100, C430S281100, C430S944000, C430S302000

Reexamination Certificate

active

10809323

ABSTRACT:
Disclosed is a presensitized plate composed of a support having thereon an image recording layer which includes:an infrared absorber (A) that is a cyanine dye having at least one fused ring composed of a nitrogen-containing heterocycle in combination with an aromatic ring or a second heterocycle, and having on the aromatic ring or second heterocycle an electron-withdrawing group or a heavy atom-containing group,a radical generator (B), anda radical-polymerizable compound (C),and which is removable with printing ink and/or dampening water.The presensitized of the present invention can be imaged with an infrared light-emitting laser to directly record an image from digital data on a computer or the like and is then subjected to on-machine development without carrying out a development step, which is capable of providing a large number of good impressions with a practical amount of energy.

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