Presensitized plate

Radiation imagery chemistry: process – composition – or product th – Imaging affecting physical property of radiation sensitive... – Radiation sensitive composition or product or process of making

Reexamination Certificate

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Details

C430S271100, C430S275100, C430S278100, C101S453000, C101S454000

Reexamination Certificate

active

07037635

ABSTRACT:
The present invention provides a presensitized plate, comprising: an aluminum plate having an aluminum purity of not less than 99 wt %; and a photosensitive layer formed on the surface of said aluminum plate, wherein a fatigue fracture strength of the presensitized plate after a heat treatment at 300° C. for 7 minutes is not less than 75% of the fatigue fracture strength thereof before the heat treatment. The presensitized plate is excellent in efficiency and stability of a roughening treatment, and is capable of preventing generation of fatigue fracture of the lithographic printing plate during printing even if a burning treatment has been made on lithographic printing plate.

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