Invention Grant
- Patent Title: Magnetic recording medium and method of producing the same
- Patent Title (中): 磁记录介质及其制造方法
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Application No.: US11729842Application Date: 2007-03-30
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Publication No.: US07901805B2Publication Date: 2011-03-08
- Inventor: Koji Naoe
- Applicant: Koji Naoe
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2006-094924 20060330
- Main IPC: G11B5/706
- IPC: G11B5/706

Abstract:
A magnetic recording medium, which comprises: a nonmagnetic support; and a magnetic layer comprising a ferromagnetic powder and a binder, wherein an average surface roughness (Ra) at a center of a surface of the magnetic layer measured by using an atomic force microscope (AFM) is 2 nm or less, the maximum height (Rmax) thereof is 50 nm or less, and an arithmetic average of phase difference between a drive signal and a response signal of a probe measured with the atomic force microscope in a tapping mode is from 2 to 20°, and a method of producing the same.
Public/Granted literature
- US20070231612A1 Magnetic recording medium and method of producing the same Public/Granted day:2007-10-04
Information query
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