Invention Application
- Patent Title: Magnetic recording medium
- Patent Title (中): 磁记录介质
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Application No.: US10970932Application Date: 2004-10-22
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Publication No.: US20050089723A1Publication Date: 2005-04-28
- Inventor: Yasuhiro Nishida , Takamitsu Harada , Minoru Yamaga
- Applicant: Yasuhiro Nishida , Takamitsu Harada , Minoru Yamaga
- Assignee: Sony Corporation
- Current Assignee: Sony Corporation
- Priority: JPP2003-362936 20031023
- Main IPC: G11B5/725
- IPC: G11B5/725 ; G11B5/70 ; G11B5/71 ; G11B5/738 ; G11B5/78 ; G11B5/708

Abstract:
There is provided a magnetic recording medium which is well evaluated in a running reliability, has small amount of seizing on a magnetic head, suppresses a wear rate of the magnetic head, and maintains high reproduction power during running of the magnetic tape for a long time. The magnetic recording medium, in tape form, reproduces a magnetic recorded signal by a reproducing magnetic head utilizing a magnetoresistive effect element, and has a nonmagnetic layer including nonmagnetic powder dispersed in a binder, and a magnetic layer including ferromagnetic powder dispersed in a binder, the nonmagnetic layer and the magnetic layer are successively formed on a long tape-like nonmagnetic substrate, wherein the nonmagnetic layer contains the nonmagnetic powder having pH of 7.5 or more, and wherein the nonmagnetic layer or/and the magnetic layer contain at least one fatty acid amide having an alkyl group having 8 or more carbon atoms.
Information query
IPC分类: