公开(公告)号：US20190143637A1

公开(公告)日：2019-05-16

申请号：US16099625

申请日：2017-05-11

Applicant: Sony Corporation

Inventor： Eiji NAKASHIO ,  Yuta AKIMOTO ,  Tomoe SATO ,  Yoichi KANEMAKI ,  Nobuyuki SASAKI ,  Masaru TERAKAWA ,  Kazuya HASHIMOTO ,  Katsunori MAESHIMA ,  Minoru YAMAGA ,  Hikaru TERUI ,  Hiroyuki KOBAYASHI

IPC: B32B7/02 ,  G11B5/735 ,  G11B5/738 ,  G11B5/78

Abstract: A magnetic recording medium according to a first technique includes an elongated substrate having a first surface and a second surface, a first reinforcing layer disposed on the first surface, a second reinforcing layer disposed on the second surface, an adhesion suppressing layer disposed on the second reinforcing layer, and a recording layer disposed on the first reinforcing layer or the adhesion suppressing layer.

公开(公告)号：US20210027807A1

公开(公告)日：2021-01-28

申请号：US17043452

申请日：2019-03-27

Applicant: SONY CORPORATION

Inventor： Natsuki TOYOSAWA ,  Norikatsu FUJISAWA ,  Yuta AKIMOTO ,  Satoru ABE ,  Masaru TERAKAWA ,  Katsunori MAESHIMA ,  Atsushi MURAMATU ,  Masashi NAKATANI

IPC: G11B5/842 ,  H01F1/11 ,  G11B5/706 ,  C01G49/04 ,  C01G49/08 ,  C09C1/24

Abstract: [Solving Means] A method of producing a magnetic powder includes: coating a surface of each of silica-coated precursor particles with at least one type of coating agent of a metal chloride or a sulfate; and firing the precursor particles coated with the coating agent.

公开(公告)号：US20200321025A1

公开(公告)日：2020-10-08

申请号：US16099298

申请日：2017-05-11

Applicant: SONY CORPORATION

Inventor： Eiji NAKASHIO ,  Yuta AKIMOTO ,  Tomoe SATO ,  Yoichi KANEMAKI ,  Nobuyuki SASAKI ,  Masaru TERAKAWA ,  Kazuya HASHIMOTO ,  Katsunori MAESHIMA ,  Minoru YAMAGA ,  Hikaru TERUI ,  Hiroyuki KOBAYASHI

IPC: G11B5/706 ,  B32B7/022

Abstract: A magnetic recording medium includes an elongated substrate, and a reinforcing layer and a carbon thin film disposed on one surface of the substrate.