Title:
MAGNETIC RECORDING MEDIUM AND CARTRIDGE
Document Type and Number:
WIPO Patent Application WO/2019/160144
Kind Code:
A1
Abstract:
[Problem] To provide a technology for further improving the recording density of data. [Solution] A magnetic recording medium according to the present technology has a base material and a magnetic layer, and has a tape shape that is long in the longitudinal direction and short in the width direction, wherein the magnetic layer includes: a data band which is long in the longitudinal direction and on which a data signal is written; and a servo band which is long in the longitudinal direction and on which a servo signal is written. The degree of vertical alignment is 65% or more, the half-width of an isolated waveform of a reproduction waveform of the servo signal is 195 nm or less; the thickness of the magnetic layer is 90 nm or less; and the thickness of the base material is 4.2 μm or less.
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Inventors:
YAMAGA MINORU (JP)
SATO TOORU (JP)
MIURA TOSHIAKI (JP)
IWAMA TAKANOBU (JP)
TAKAHASHI JUN (JP)
SATO TOORU (JP)
MIURA TOSHIAKI (JP)
IWAMA TAKANOBU (JP)
TAKAHASHI JUN (JP)
Application Number:
PCT/JP2019/005886
Publication Date:
August 22, 2019
Filing Date:
February 18, 2019
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G11B5/70; G11B5/584; G11B5/706; G11B5/78
Foreign References:
| JP2014199706A | 2014-10-23 | |||
| US20080117539A1 | 2008-05-22 | |||
| JP2005038579A | 2005-02-10 | |||
| JP2002083412A | 2002-03-22 |
Attorney, Agent or Firm:
OMORI, Junichi et al. (JP)
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