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. 16, 1986
Filed:
Mar. 20, 1984
Applicant:
Inventor:
Yasutoshi Okuzawa, Odawara, JP;
Assignee:
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 99 ; 369270 ;
Abstract
An apparatus for driving a flexible magnetic disk comprises an upper member and a lower member for positioning a flexible magnetic disk sheet of the flexible magnetic disk by engagement with a circular hole at the center of the magnetic disk sheet. A lubricating material is applied onto the surfaces of the upper members and the lower members, thereby to decrease the coefficient of friction of the upper member with respect to the magnetic disk sheet to a value within the range of 0.45 or less, and that of the lower member to a value within the range of 0.30 or less.