GLASS FOR MAGNETIC RECORDING MEDIUM SUBSTRATE OR FOR GLASS SPACER TO BE USED IN MAGNETIC RECORDING/REPRODUCING DEVICE, MAGNETIC RECORDING MEDIUM SUBSTRATE, MAGNETIC RECORDING MEDIUM, GLASS SPACER TO BE USED IN MAGNETIC RECORDING/REPRODUCING DEVICE, AND MAGNETIC RECORDING/REPRODUCING DEVICE

Title:

Document Type and Number:

WIPO Patent Application WO/2024/053740

Kind Code:

A1

Abstract:

Provided is a glass for a magnetic recording medium substrate or for a glass spacer to be used in a magnetic recording/reproducing device that is an amorphous glass that has a B2O3 content of 0.10-2.00 mol% inclusive, a Na2O content of 1.00-6.00 mol% inclusive, a CaO content of 0-1.00 mol% inclusive, and a Mgo content of 14.00 mol% or more.

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Inventors:

TOKUMITSU SHUZO (JP)
HASHIMOTO KAZUAKI (JP)

Application Number:

PCT/JP2023/032918

Publication Date:

March 14, 2024

Filing Date:

September 08, 2023

Export Citation:

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Assignee:

HOYA CORP (JP)

International Classes:

G11B23/03; G11B17/038

Domestic Patent References:

WO2021015240A1	2021-01-28
WO2015037609A1	2015-03-19

Foreign References:

JP2015096465A

2015-05-21

Attorney, Agent or Firm:

SIKS & CO. (JP)

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