Title:
MAGNETIC RECORDING MEDIUM AND CARTRIDGE
Document Type and Number:
WIPO Patent Application WO/2023/190541
Kind Code:
A1
Abstract:
Provided is a magnetic recording medium capable of reducing surface dynamic friction of a magnetic layer and achieving good electromagnetic conversion characteristics. This magnetic recording medium is a tape-like magnetic recording medium and comprises a substrate and a magnetic layer. The magnetic layer contains conductive particles. The magnetic recording medium has an average thickness of 5.3 µm or less. An average number of the conductive particles per a 400 µm2 surface area of the magnetic layer is 50 or greater, an average conductive particle area on the surface of the magnetic layer is 35,000 nm2 or less, and the ratio of the average conductive particle area on the surface of the magnetic layer is less than 2.00%.
Inventors:
YAMAGA MINORU (JP)
KAMOSHITA YUUKO (JP)
KAMOSHITA YUUKO (JP)
Application Number:
PCT/JP2023/012565
Publication Date:
October 05, 2023
Filing Date:
March 28, 2023
Export Citation:
Assignee:
SONY GROUP CORP (JP)
International Classes:
G11B5/708; G11B5/09; G11B5/70; G11B5/706; G11B5/738; G11B5/78; G11B5/84; G11B21/10; G11B23/037
Foreign References:
| JP2016027518A | 2016-02-18 | |||
| JP2021061080A | 2021-04-15 | |||
| JP2020166918A | 2020-10-08 | |||
| JP2005327386A | 2005-11-24 | |||
| JP2011028826A | 2011-02-10 | |||
| JP2021118013A | 2021-08-10 | |||
| JPH1196540A | 1999-04-09 |
Attorney, Agent or Firm:
SUGIURA PATENT OFFICE et al. (JP)
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