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:
May. 03, 1994
Filed:
Jun. 08, 1992
Applicant:
Inventors:
Masaru Okada, Hyogo, JP;
Yoshiyuki Suehiro, Hyogo, JP;
Assignee:
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G11B / ;
U.S. Cl.
CPC ...
360121 ;
Abstract
Complex magnetic head of the present invention eliminates relative magnetic interference between the magnetic heads and relative gap position drift between magnetic heads. The complex magnetic head has high performance and is compatible with lower rank FDDs. The complex magnetic head comprises R/W core track width regulation grooves (52a, 52b, 53a, 53b) filled with glass, erase core track width regulation grooves (55a, 55b, 56a, 56b) filled with glass, R/W core (18, 22) and erase core (20, 24) between shield members formed by these core track width regulation grooves (52a, 52b, 53a, 53b, 55a, 55b, 56a, 56b).