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:
Nov. 30, 1999
Filed:
Oct. 30, 1997
Sony Corporation, Tokyo, JP;
Abstract
This invention provides a method for producing a magneto-optical recording medium with a laminated film composed of a plurality of magnetic layers made of alloys of rare earth metals-transition metals such as a magneto-optical recording medium allowing direct overwriting through light intensity modulation and a magneto-optical recording medium allowing magnetically induced recording with super resolution, or a method for stably producing a magneto-optical recording medium excellent in performance. The method consists of using, as vaporizers to form the laminated magnetic film, three or more vaporizers including one or more vaporizers containing mainly rare earth elements and one or more vaporizers containing mainly transition metals. Then, particles ejected from a vaporizer containing mainly a rare earth metal and from two or more vaporizers containing mainly transition metals are allowed to continue to impinge onto the surface upon which the laminated film is to be formed, throughout the formation of the laminated film.