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:
Oct. 08, 1985
Filed:
Jul. 30, 1982
Applicant:
Inventors:
Junzo Toda, Kawasaki, JP;
Masao Hiyane, Yokohama, JP;
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ; G11B / ;
U.S. Cl.
CPC ...
360126 ; 360123 ;
Abstract
A perpendicular magnetic recording and reproducing head, including: a spiral coil of at least one electrically conductive thin film; and a main pole of a first thin magnetic film having an end for recording and reproducing information, the main pole and the spiral coil being electromagnetically coupled to each other. A perpendicular magnetic head such as this can be easily manufactured, can be adapted not only to floppy disks but also to rigid disks, is suitable for high-frequency operation, and has an improved recording/reproducing efficiency.