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:
Oct. 25, 1994
Filed:
Jul. 19, 1993
Applicant:
Inventors:
Seiji Kawasumi, Shizuoka, JP;
Akio Uesugi, Shizuoka, JP;
Assignee:
Fuji Photo Film Co., Ltd., Minami-ashigara, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C25F / ;
U.S. Cl.
CPC ...
2041294 ; 20412943 ; 204140 ;
Abstract
A method for electrolytic treatment comprising forming electrochemically a rough surface on a material to be treated by supplying alternating current between the material to be treated and electrodes in an electrolytic solution containing metal ions, wherein when y[m/min.] indicates a travelling speed of the material, f[Hz] indicates line frequency and x[cm] indicates a distance between leading ends of the electrodes, an electrolytic roughening treatment is conducted by selecting x, y and f so as to satisfy the following formula; ##EQU1## (in the formula, g(a)=a-[a], here [a] indicates a maximum integer which does not exceed a.)