Lithographic printing plate precursor

Details Lithographic printing plate precursor Lithographic printing plate precursor

2005-08-16

2005-08-16

Gilliam, Barbara L. (Department: 1752)

Radiation imagery chemistry: process, composition, or product th

Microcapsule, process, composition, or product

C430S270100, C430S271100, C430S273100, C430S275100, C430S276100, C430S278100, C430S281100, C430S944000, C430S945000, C101S454000, C101S457000, C101S458000

Reexamination Certificate

active

06929895

ABSTRACT:
A lithographic printing plate precursor comprising an aluminum substrate, an image-recording layer and a hydrophilic film, the aluminum substrate being subjected to an electrochemical surface-roughening treatment in an aqueous solution comprising hydrochloric acid and provided with the hydrophilic film having a heat conductivity of 0.05 to 0.5 W/mK and/or at least one of a density of 1,000 to 3,200 kg/m3and a porosity of 20 to 70%; and a lithographic printing plate precursor comprising an aluminum substrate, an image-recording layer and a hydrophilic film, the aluminum substrate having a surface-roughened shape comprising a small pit wherein an average opening size of the small pit is 0.01 to 3 μm and a ratio of an average depth of the small pit to the average opening size is 0.1 to 0.5, and being provided with the hydrophilic film having a heat conductivity of 0.05 to 0.5 W/mK and/or at least one of a density of 1,000 to 3,200 kg/m3and a porosity of 20 to 70%.

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Yokoya, “Computer-to-Plate by Laser Ablation Technology”,Journal of Japan Printing Society, 1999, pp. 148-163, vol. 36 (English abstract).

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