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:
Feb. 06, 2001
Filed:
Feb. 07, 2000
Philip John Watkiss, Leeds, GB;
Agfa-Gevaert, N.V., Mortsel, BE;
Abstract
A method of preparing a lithographic printing plate which involves providing a plate precursor comprising a grained and anodized aluminium substrate coated with a metallic silver layer, imagewise exposing the precursor by means of a high intensity laser beam, and treating the plate by chemical and mechanical means in order to remove stains on the plate surface. On exposure of the plate precursor, removal of the metallic silver layer occurs in the exposed areas. The method provides press ready plates free of background stain, which give a clean, even appearance in exposed areas and show high image resolution and excellent durability on press, while eliminating the requirement for the use of intermediate film and developer chemistry.