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. 11, 1986
Filed:
Sep. 30, 1983
Applicant:
Inventors:
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 48 ; 360 78 ; 360118 ;
Abstract
In a flexible disc device having a magnetic head for reading data written in a flexible disc medium or writing data to the medium, the magnetic head enables to change effective track width specified by core width of writing/reading head gap and erasing head gap at the writing state corresponding to the record density in the diameter direction of the disc medium, thereby compatibility is obtained between plural sorts of flexible disc media being different in the track density.