Title:
MAGNETIC RECORDING MEDIUM
Document Type and Number:
WIPO Patent Application WO/2019/003578
Kind Code:
A1
Abstract:
A magnetic recording medium according to the present invention includes: an elongated substrate; and a magnetic layer containing magnetic powder and a binder, wherein the glass transition point of the binder is not lower than 75°C. When an observation image in the form of a 10 μm × 10 μm rectangle is acquired by means of an atomic force microscope at five points randomly selected from the face on the magnetic layer side, in the observation images acquired at four points among the observation images acquired at the five points, there is no line-shaped projection having a height of 3-20 nm, having a width of 0.3-1.0 μm, and spanning two sides of the observation image.
Inventors:
MIURA TOSHIAKI (JP)
ABE SATORU (JP)
KAMOSHITA YUUKO (JP)
YOSHIDA RIKU (JP)
ABE SATORU (JP)
KAMOSHITA YUUKO (JP)
YOSHIDA RIKU (JP)
Application Number:
PCT/JP2018/015573
Publication Date:
January 03, 2019
Filing Date:
April 13, 2018
Export Citation:
Assignee:
SONY CORP (JP)
International Classes:
G11B5/70; G11B5/702; G11B5/706; G11B5/738; G11B5/80
Foreign References:
| JP2003123222A | 2003-04-25 | |||
| JP2010238330A | 2010-10-21 | |||
| JPH08115517A | 1996-05-07 | |||
| JP2005259287A | 2005-09-22 | |||
| JP2005149622A | 2005-06-09 | |||
| JP2014154178A | 2014-08-25 | |||
| JP2014088365A | 2014-05-15 | |||
| JP2000025111A | 2000-01-25 |
Attorney, Agent or Firm:
SUGIURA, Masatomo et al. (JP)
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