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:
Dec. 17, 1991
Filed:
Aug. 23, 1990
Harald Lauke, Mannheim, DE;
Gregor Schuermann, Heidelberg, DE;
Hartmut Sandig, Frankenthal, DE;
Thomas Loerzer, Appenweier, DE;
BASF Aktiengesellschaft, Ludwigshafen, DE;
Abstract
A sensitized lithographic printing plate comprising an aluminum substrate which has been mechanically, chemically and/or electrochemically pretreated and anodically oxidized in a conventional manner and a photosensitive copying layer which is applied to this substrate is produced by a process in which the substrate is aftertreated with an aqueous solution of a mixture of a fluoride and a hydrolysis product or condensate of a silane before application of the photosensitive copying layer. There lithographic printing plates are particularly suitable for offset printing.