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. 02, 1996
Filed:
Sep. 30, 1994
Yoichi Osato, Yokohama, JP;
Hisaaki Kawade, Atsugi, JP;
Eiichi Fujii, Yokohama, JP;
Nobuhiro Kasama, Yokohama, JP;
Tadashi Kobayashi, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetooptical recording medium is provided with a transparent substrate, a first magnetic layer, a second magnetic layer having a higher Curie point and a lower coercive force than those of the first magnetic layer and being exchange coupled with the first magnetic layer. The medium further includes a third magnetic layer located between the first and second magnetic layers, so that the first magnetic layer is closer to the transparent substrate than the second and third magnetic layers and the third magnetic layer is closer to the transparent substrate than the second magnetic layer. Also disclosed is a process for recording on such a medium.