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:
Aug. 22, 1989
Filed:
Feb. 09, 1988
Applicant:
Inventor:
Philip J Watkiss, Leeds, GB;
Assignee:
Vickers plc, London, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25D / ; C25F / ;
U.S. Cl.
CPC ...
204 33 ; 204 383 ; 2041291 ; 20412975 ; 101459 ;
Abstract
A lithographic printing plate precursor for use in a silver diffusion transfer system comprises a grained and anodized aluminum substrate having coated thereon a sol containing nuclei for precipitating silver from a silver complex. The substrate has an anodic weight (gm.multidot.m-.sup.2) to surface roughness (microns) ratio greater than or equal to 6. Printing plates produced from such precursors are less prone to corrosion and have improved printing life.