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Patent Searching and Data


Title:
MAGNETIC RECORDING MEDIUM AND CARTRIDGE
Document Type and Number:
WIPO Patent Application WO/2019/159464
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.

Inventors:
YAMAGA, Minoru (1-7-1 Konan Minato-ku Tokyo, 75, 〒1080075, JP)
IWAMA, Takanobu (1-7-1 Konan Minato-ku Tokyo, 75, 〒1080075, JP)
TAKAHASHI, Jun (1-7-1 Konan Minato-ku Tokyo, 75, 〒1080075, JP)
Application Number:
JP2018/042721
Publication Date:
August 22, 2019
Filing Date:
November 19, 2018
Export Citation:
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Assignee:
SONY CORPORATION (1-7-1 Konan, Minato-ku Tokyo, 75, 〒1080075, JP)
International Classes:
G11B5/70; G11B5/584; G11B5/706; G11B5/78
Attorney, Agent or Firm:
OMORI, Junichi (2nd Floor, U&M Akasaka Bldg. 7-5-47 Akasaka, Minato-k, Tokyo 52, 〒1070052, JP)
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