Invention Grant
- Patent Title: Magnetic recording medium
- Patent Title (中): 磁记录介质
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Application No.: US14209065Application Date: 2014-03-13
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Publication No.: US09530444B2Publication Date: 2016-12-27
- Inventor: Norihito Kasada
- Applicant: FUJIFILM Corporation
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2013-053543 20130315
- Main IPC: G11B5/706
- IPC: G11B5/706 ; G11B5/708 ; G11B5/70

Abstract:
An aspect of the present invention relates to a magnetic recording medium, which comprises a magnetic layer comprising ferromagnetic powder and binder on a nonmagnetic support, wherein the ferromagnetic powder is ferromagnetic hexagonal ferrite powder comprising 3 to 12 weight percent of Al, based on Al2O3 conversion, relative to 100 weight percent of a total weight of the powder, the magnetic layer further comprises abrasive, and a maximum plan view surface area of the abrasive as determined for a 4.3 μm×6.3 μm rectangular region of the magnetic layer by a scanning electron microscope is less than 0.06 percent relative to 100 percent of a total surface area of the region.
Public/Granted literature
- US20140272474A1 MAGNETIC RECORDING MEDIUM Public/Granted day:2014-09-18
Information query
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