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:
Jul. 07, 1987
Filed:
Oct. 10, 1985
Applicant:
Inventors:
Haruo Nakanishi, Shizuoka, JP;
Hirokazu Sakaki, Shizuoka, JP;
Toru Yamazaki, Shizuoka, JP;
Yoshio Okishi, Shizuoka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Int. Cl.
CPC ...
C25F / ;
U.S. Cl.
CPC ...
20412975 ; 156665 ;
Abstract
A process for producing an aluminum support for a lithographic printing plate, comprising chemical graining of an aluminum plate with an etching solution, is disclosed. The etching solution contains a mineral acid and an unsaturated concentration aluminum salt of a mineral acid. The printing plate produced from the support exhibits high printing durability and excellent performance in preventing stains in non-image areas.