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:
Apr. 21, 1981
Filed:
Mar. 16, 1978
Applicant:
Inventor:
Ferdinand Martinez, Belmont, MA (US);
Assignee:
Coulter Systems Corporation, Bedford, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
430 49 ; 430 94 ; 430302 ; 430309 ; 101454 ; 101458 ; 101465 ; 101467 ;
Abstract
A method of preparing a lithographic printing plate, and the resulting printing plate, by applying an acidified oxidizing agent such as aqueous potassium permanganate solution to the toned electrostatic latent image on the photoconductive layer of an electrophotographic member to define water-receptive non-printing areas. The thus treated surface may be washed or further treated with conventional ferrocyanide ion containing fountain solutions or gum arabic, but only if desired.