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:
Feb. 20, 1990
Filed:
Feb. 23, 1988
Applicant:
Inventors:
Kazufumi Ogawa, Hirakata, JP;
Hideharu Tamura, Katano, JP;
Assignee:
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
428694 ; 427131 ; 428695 ; 428900 ;
Abstract
Disclosed is a recording medium which comprises a base body of the recording medium, a recording layer formed on the base body, and a protective layer formed on the recording layer for protecting the recording layer. The protection layer is made from a silane surface active agent containing fluorine atoms (e.g., CF.sub.3 --(CF.sub.2)m--(CH.sub.2)n--SiCl.sub.3 (m, n: integer) and the agent is polymerized with the recording layer. The recording medium may provide high density recording performance.