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:
Apr. 02, 2002
Filed:
May. 18, 1995
Applicant:
Inventors:
Toshiyuki Sato, Tsukuba, JP;
Shinya Katayama, Tsukuba, JP;
Assignee:
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C23C 1/434 ;
U.S. Cl.
CPC ...
C23C 1/434 ;
Abstract
This invention relates to a magnetic recording medium having a structure in which an undercoating film, a magnetic thin film, a protective film, and an organic film are stacked on a substrate in the order named. Since the protective film contains carbon and silicon and a portion of silicon in at least an interface in contact with the organic film consists of a silicon oxide, the surface of the magnetic recording medium is not degraded even by frequent contact with a magnetic head upon driving or stopping of the magnetic recording medium. This invention also relates to a method of manufacturing the same.