Invention Grant
- Patent Title: Magnetic recording medium and magnetic recording/reproducing apparatus
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Application No.: US15535982Application Date: 2015-12-16
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Publication No.: US10559320B2Publication Date: 2020-02-11
- Inventor: Satoru Nakamura , Taining Hung , Evance Kuo , Daizo Endo
- Applicant: SHOWA DENKO K.K.
- Applicant Address: JP Minato-ku, Tokyo
- Assignee: SHOWA DENKO K.K.
- Current Assignee: SHOWA DENKO K.K.
- Current Assignee Address: JP Minato-ku, Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2014-257205 20141219; JP2015-119737 20150612; JP2015-119743 20150612
- International Application: PCT/JP2015/085225 WO 20151216
- International Announcement: WO2016/098811 WO 20160623
- Main IPC: G11B5/725
- IPC: G11B5/725 ; C10M107/38 ; C10M105/54 ; C10M111/04

Abstract:
The present invention relates to a magnetic recording medium in which a lubricant layer contains a compound A represented by general formula (1) and a compound B represented by general formula (2), satisfying (A/B)=0.2 to 3.0, and has an average thickness of 0.8 nm to 2 nm. R1—C6H4OCH2CH(OH)CH2OCH2—R2—CH2OCH2CH(OH)CH2OH . . . (1) (R1 is an alkoxy group having 1 to 4 carbon atoms. R2 is —CF2O(CF2CF2O)x(CF2O)yCF2— (x, y=0 to 15), —CF2CF2O(CF2CF2CF2O)zCF2CF2— (z=1 to 15), —CF2CF2CF2O(CF2CF2CF2CF2O)nCF2CF2CF2— (n=0 to 4). HOCH2CF2CF2O(CF2CF2CF2O)mCF2CF2CH2OCH2CH(OH)CH2OH . . . (2) (m is an integer).
Public/Granted literature
- US20170337945A1 MAGNETIC RECORDING MEDIUM AND MAGNETIC RECORDING/REPRODUCING APPARATUS Public/Granted day:2017-11-23
Information query
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