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:
Jan. 13, 2026
Filed:
Sep. 10, 2024
Kabushiki Kaisha Toshiba, Tokyo, JP;
Toshiba Electronic Devices & Storage Corporation, Tokyo, JP;
Nobuhiro Maeto, Yokohama Kanagawa, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Toshiba Electronic Devices & Storage Corporation, Kawasaki, JP;
Abstract
According to one embodiment, a magnetic head executes a magnetization operation of magnetizing a magnetic disk to one of a first polarity and a second polarity opposite the first polarity. The magnetization operation includes a first magnetization operation of magnetizing the disk with a first recording width and a second magnetization operation of magnetizing the disk with a second recording width larger than the first recording width. The controller magnetizes a first area unit to the first or second polarity in the first or second magnetization operation, and then magnetizes a second area unit to a polarity opposite to that of the first area unit in the second magnetization operation. The second area unit is an area unit, radially adjacent to the first area unit, included in a second track that is a track adjacent to a first track among tracks and to be written after the first track.