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:
Mar. 08, 2005
Filed:
Mar. 27, 2002
Tetsuo Hosokawa, Higashine, JP;
Tetsuo Hosokawa, Higashine, JP;
Fujitsu Limited, Kawasaki, JP;
Abstract
An optical magnetic recording medium in which reproduction is implemented by transcribing a mark to a reproducing layer based on a magnetic field from a recording layer, includes a reproducing layer, a non-magnetic layer, and a recording layer including a first recording layer and a second recording layer, wherein the reproducing layer, the non-magnetic layer, and the recording layer including the first recording layer and the a second recording layer are stacked in this sequence; the regenerating layer has a property of an easy magnetization in an in-plane direction at room temperature; the first recording layer and the second recording layer each has a property of easy magnetization in a vertical direction to the in-plane direction at room temperature in a single layer; and there is a relation of M<Mwherein a composition of a rare-earth metal comprising the first recording layer is defined as M(at %) and a composition of a rare-earth metal comprising the second recording layer is defined as M(at %).