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. 10, 1992
Filed:
Feb. 15, 1991
Shinichi Nanjyo, Miyagi, JP;
Sony Corporation, Tokyo, JP;
Abstract
A method for manufacture of a bulk-type magnetic head capable of performing a frame recording operation. In sequential steps, coil grooves and track-width limit grooves substantially orthogonal thereto are formed in respective butt surfaces of a pair of magnetic core blocks, and then head-element division slits are formed between the track-width limit grooves. Subsequently the magnetic core blocks are joined to be integral with each other, and notches are formed in the core blocks in such a manner as to extend from lateral surfaces of the core blocks on the reverse side with respect to the butt surfaces thereof and to reach at least the coil grooves adjacently to the head-element division slits, whereby the in-line precision of magnetic gaps can be enhanced and high productivity is attained in manufacture of the magnetic head.