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:
Feb. 27, 1996
Filed:
Oct. 11, 1994
Takeo Ito, Yokohama, JP;
Hirotaka Yokoyama, Yokosuka, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A magnetic recording medium having a nonmagnetic supporting member and a plurality of magnetic layers formed on at least one major surface of the nonmagnetic supporting member, comprising a first longitudinally oriented magnetic layer having a first longitudinally orientation rate located uppermost and comprising a hexagonal system ferromagnetic powder, and a second longitudinally oriented magnetic layer having a second longitudinally orientation rate located between the nonmagnetic supporting member and the first longitudinally oriented magnetic layer and comprising a needle-like crystal magnetic powder, wherein the first longitudinally orientation rate of the first longitudinally oriented magnetic layer is at least 0.5 and is smaller than the second longitudinally orientation rate of the second longitudinally oriented magnetic layer.