The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 30, 2019
Filed:
Sep. 05, 2018
Eastman Kodak Company, Rochester, NY (US);
Oliver Merka, Gottingen, DE;
Jan-Phillip Kemmling, Bilshausen, DE;
Oliver Richard Blum, Bovenden, DE;
Benedikt Uhl, Ulm, DE;
Philipp Viehmann, Gottingen, DE;
EASTMAN KODAK COMPANY, Rochester, NY (US);
Abstract
On-press developable, negative-working lithographic printing plate precursors are used to provide lithographic printing plates. Such precursors are prepared with a substrate and one or more negative-working, infrared radiation-sensitive imagable layers. The substrate is prepared by two separate anodizing processes to provide an inner aluminum oxide layer having an average dry thickness (T) of 650-3,000 nm and inner micropores having an average inner micropore diameter (D) of <15 nm. A formed outer aluminum oxide layer comprises outer micropores having an average outer micropore diameter (D) of 15-30 nm; an average dry thickness (T) of 130-650 nm; and a micropore density (C) of 500-3,000 micropores/μm. The ratio of Dto Dis greater than 1.1:1, and Din nanometers and the outer aluminum oxide layer micropore density (C) in micropores/μm, are further defined by the outer aluminum oxide layer porosity (P) as:0.3≤≤0.8wherein Pis 3.14(C)(D)/4,000,000.