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:
Jun. 20, 1989
Filed:
Apr. 06, 1987
Applicant:
Inventors:
Assignee:
Fuji Photo Film Co., Ltd., , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427130 ; 427128 ; 428695 ; 428900 ;
Abstract
A method of making a magnetic recording medium by forming a recording layer composed of a ferromagnetic material on a strip-like substrate comprises a first step of applying the ferromagnetic material onto the surface of the substrate, a second step of drying the ferromagnetic material applied on the surface of the substrate, a third step of grinding the surface of the dried recording layer on the substrate, a fourth step of removing process grains clinging to the ground surface of the recording layer, and a fifth step of calendering the surface of the recording layer from which the process grains have been removed.