The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2025
Filed:
Mar. 10, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Toru Watanabe, Kawasaki Kanagawa, JP;
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Abstract
According to one embodiment, a magnetic disk device includes a magnetic disk and a magnetic head. The magnetic disk includes a data area on/from which data can be recorded/reproduced. The magnetic head records data on the data area and reproduces data from the data area. An outer edge of the data area includes first outer edge, second outer edge positioned on the further inner circumferential side of the magnetic disk relatively to the first outer edge, and third outer edges each connecting between the first outer edge and the second outer edge. The outer edge of the data area incudes concave parts made inwardly concave toward the inner circumferential side of the magnetic disk at not less than part thereof.