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:
Jun. 30, 2015
Filed:
Jun. 25, 2014
Kabushiki Kaisha Toshiba, Minato-ku, JP;
Kiwamu Kudo, Kamakura, JP;
Tazumi Nagasawa, Yokohama, JP;
Hirofumi Suto, Tokyo, JP;
Tao Yang, Yokohama, JP;
Koichi Mizushima, Kamakura, JP;
Rie Sato, Yokohama, JP;
KABUSHIKI KAISHA TOSHIBA, Minato-ku, JP;
Abstract
According to an embodiment, a magnetic recording and reproducing apparatus includes a recording medium and a reproducing head. The recording medium includes a concentric circular plurality of tracks. The reproducing head includes a spin torque oscillator and reproduces information from the recording medium using the spin torque oscillator, the spin torque oscillator including an oscillation layer with a first cross-track direction width, a polarizer layer with a second cross-track direction width, and a spacer layer provided between the oscillation layer and the polarizer layer. The first cross-track direction width is larger than double the second cross-track direction width, and the second cross-track direction width is smaller than an inter-track distance.