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:
Dec. 27, 1988
Filed:
Sep. 04, 1987
Heigo Ishihara, Tokyo, JP;
Takanori Kudo, Kokubunji, JP;
Tomoyuki Ohno, Kokubunji, JP;
Motoo Akagi, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic recording medium which has a magnetic coating film that contains magnetic particles in a binder and which further has a lubricating layer formed on the magnetic coating film. The magnetic coating film has a surface that is processed with both a fluorinated surface treatment agent that bonds to the magnetic particles and a fluorinated surface treatment agent that bonds to the binder. The magnetic recording medium exhibits markedly improved sliding strength when the surface treatment agents and the lubricant have similar molecular structures. It is particularly preferred that the fundamental skeleton in the molecular structure of the surface treatment agents and the lubricant consists of a perfluoropolyether chain.