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:
Dec. 05, 2006
Filed:
Dec. 30, 2004
Hiroyasu Kawano, Kawasaki, JP;
Takeshi Morikawa, Kawasaki, JP;
Koji Matsumoto, Kawasaki, JP;
Satomi Kubo, Kawasaki, JP;
Hiroyasu Kawano, Kawasaki, JP;
Takeshi Morikawa, Kawasaki, JP;
Koji Matsumoto, Kawasaki, JP;
Satomi Kubo, Kawasaki, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
This invention relates to a magnetic backlayer, and provides a magnetic backlayer giving a small spike noise spk and a small media noise Nm and exhibiting a large saturation magnetization Ms to have a good soft magnetic property. The magnetic backlayer is formed on a substrate; has a structure in that soft magnetic layers comprising iron and carbon as main components and nonmagnetic layers are alternately laminated; and has easy axes of magnetization in the in-plane direction of the film and the radius direction of the substrate.