Lithographic printing plate precursors and method of use

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United States of America Patent

PATENT NO 10828884
APP PUB NO 20180250925A1
SERIAL NO

15447651

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Abstract

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Lithographic printing plate precursors are prepared with a unique substrate and one or more radiation-sensitive imageable layers. The substrate is prepared by two separate anodizing processes to provide an inner aluminum oxide layer having an average dry thickness (Ti) of 650-3,000 nm and a multiplicity of inner micropores having an average inner micropore diameter (Di) of ≤15 nm. A formed outer aluminum oxide layer comprises a multiplicity of outer micropores having an average outer micropore diameter (Do) of 15-30 nm; an average dry thickness (To) of 130-650 nm; and a micropore density (Co) of 500-3,000 micropores/μm2. The ratio of Do to Di is greater than 1.1:1, and Do in nanometers and the outer aluminum oxide layer micropore density (Co) in micropores/μm2, are further defined by the outer aluminum oxide layer porosity (Po) according to the following equation:

description='In-line Formulae' end='lead'0.3≤Po≤0.8description='In-line Formulae' end='tail'

where Po is 3.14(Co)(Do2)/4,000,000.

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Patent Owner(s)

Patent OwnerAddress
EASTMAN KODAK COMPANY343 STATE STREET PATENT LEGAL STAFF ROCHESTER NY 14650-0208

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Blum, Oliver Richard Bovenden, DE 5 23
Kemmling, Jan-Phillip Bilshausen, DE 3 11
Merka, Oliver Gottingen, DE 5 11
Uhl, Benedikt Ulm, DE 2 9

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