Planographic printing plate

Details Planographic printing plate Planographic printing plate

2005-12-06

2005-12-06

Walke, Amanda (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

C430S302000, C101S401100, C101S456000

Reexamination Certificate

active

06972167

ABSTRACT:
A negative type planographic printing plate in which recording can be performed directly from digital data of a computer or the like using an infrared laser. Sensitivity of the plate is high, ablation by a recording layer during recording is suppressed, a developing property is good, occurrence of a film residue does not occur, and image forming properties such as halftone dot reproducibility are excellent. The negative type planographic printing plate has on a supporting body, in the following order, a first layer that contains a polymer insoluble in water and soluble in an alkaline aqueous solution, and a second layer that contains a cross-linking or polymeric compound, which forms a covalent bond by action of light or heat and lowers solubility of the second layer in an alkaline developing liquid.

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