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:
Sep. 16, 2003
Filed:
Feb. 27, 2002
Kouichi Masaki, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A magnetic recording medium having on a support a non-magnetic layer comprising a non-magnetic powder dispersed in a binder resin and on the non-magnetic layer a magnetic layer comprising a ferromagnetic powder dispersed in a binder resin, wherein the ferromagnetic powder is a Hexagonal (system) ferrite magnetic powder having an average tabular diameter of 10 to 35 nm and a coercive force (Hc) of 135 to 400 kA/m, and besides, the magnetic layer has a coercive force (Hc) of 135 to 440 kA/m, an anisotropic magnetic field of at least 358 kA/m and a rotational hysteresis loss integral of 0.5 to 0.95. Even when the magnetic recording medium is used in combination with an MR head, it can ensure high short-wavelength output, high C/N ratio and excellent recorded-magnetization stability.