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. 08, 1986
Filed:
May. 29, 1984
Applicant:
Inventors:
Assignee:
Victor Company of Japan, Limited, Kanagawa, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B29C / ;
U.S. Cl.
CPC ...
425174 ; 118623 ; 118640 ; 335284 ; 335302 ; 360 86 ; 360135 ;
Abstract
A device for orienting magnetic particles contained in a magnetic layer on a disc-shaped magnetic recording medium along the circumference of the recording medium. The magnetic layer is provided on a substrate. The orientation is effected by a magnetic field developed by a pair of permanent magnets and which the recording medium traverses during rotation. The permanent magnets are individually shaped flat and arranged to oppose each other at their pole-faces which are common in polarity. A trailing edge of each magnet located with respect to relative movement of the rotating recording medium extends and aligns with the radius of the recording medium.