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:
Jul. 17, 2001
Filed:
Nov. 03, 1993
Yoshiteru Murakami, Nishinomiya, JP;
Junji Hirokane, Nara, JP;
Junichiro Nakayama, Shiki-gun, JP;
Junsaku Nakajima, Yamatotakada, JP;
Akira Takahashi, Nara, JP;
Kenji Ohta, Kitakatsuragi-gun, JP;
Naoyasu Iketani, Tenri, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
A magneto-optical recording medium is composed of a base which has a property that a light can be transmitted therethrough, a readout layer formed on the base, which has in-plane magnetization at room temperature, whereas, a transition occurs from in-plane magnetization to perpendicular magnetization as the temperature thereof is raised and a recording layer formed on the readout layer for recording information magneto-optically. A recording and reproducing method and the optical head are designed for the magneto-optical recording medium. By the recording and reproducing method using the optical head, information recorded at high density can be reproduced.