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:
May. 23, 1989
Filed:
Oct. 01, 1986
Applicant:
Inventors:
Haruo Nakanishi, Shizuoka, JP;
Hirokazu Sakaki, Shizuoka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03C / ; C25D / ;
U.S. Cl.
CPC ...
430276 ; 430155 ; 430158 ; 430159 ; 430160 ; 430161 ; 430166 ; 430167 ; 430278 ; 204 17 ; 204 33 ; 204 58 ;
Abstract
In a process for producing a support for a lithographic printing plate, at least one surface of an aluminum sheet is subjected to roughening treatment and subsequently to anodic oxidation treatment at a current density of at least 1 A/dm.sup.2 in an electrolytic solution containing 0.1 to 5% by weight of an alkaline electrolyte. Even if scratches are formed on non-image areas of a printing plate prepared from the support according to the invention, such scratches cause less stains on a printed matter.