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. 06, 2000
Filed:
Oct. 29, 1997
Shinya Yoshida, Miyagi, JP;
Kiyoshi Kagawa, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
A tape-type magnetic recording medium including a non-magnetic support member; and a magnetic layer formed on the non-magnetic support member, wherein relationship Br.delta..ltoreq.Bst/2 is satisfied when an assumption is made that the residual magnetic flux density of the tape-type magnetic recording medium is Br, the thickness of the magnetic layer is .delta., the saturated magnetic flux density of a magnetoresistance effect device for use in a shield-type magnetoresistance effect magnetic head serving as a reproducing head is Bs and the thickness of the same is t, and coercive force Hc of the tape-type magnetic recording medium satisfies Hc.gtoreq.1500 (Oe).