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:
Jul. 12, 1988
Filed:
May. 21, 1986
Applicant:
Inventor:
Hiroyuki Umeda, Yokohama, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360 64 ; 360 141 ;
Abstract
A helical scan type magnetic recording and/or reproducing apparatus comprises a rotary erase head mounted on a rotary drum at such a position that in a normal recording mode the rotary erase head does not erase a portion of a track formed on a magnetic tape by a rotary recording and/or reproducing head which leads the rotary erase head and in a long-time recording mode the rotary erase head erases an overlapping portion of two mutually adjacent tracks formed by a pair of rotary recording and/or reproducing heads respectively leading and lagging the rotary erase head.