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:
Feb. 06, 2007
Filed:
Aug. 05, 2004
Nobuyuki Ishiwata, Tokyo, JP;
Hiroaki Honjo, Tokyo, JP;
Tamaki Toba, Tokyo, JP;
Shinsaku Saito, Tokyo, JP;
Yoshihiro Nonaka, Tokyo, JP;
Tsutomu Ishi, Tokyo, JP;
Mikiko Saito, Tokyo, JP;
Keishi Ohashi, Tokyo, JP;
Nobuyuki Ishiwata, Tokyo, JP;
Hiroaki Honjo, Tokyo, JP;
Tamaki Toba, Tokyo, JP;
Shinsaku Saito, Tokyo, JP;
Yoshihiro Nonaka, Tokyo, JP;
Tsutomu Ishi, Tokyo, JP;
Mikiko Saito, Tokyo, JP;
Keishi Ohashi, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
A recording head is a magnetic head in which ends on one side of opposed first and second magnetic cores form a recording gap, said other ends form a magnetic joint, coils insulated by an insulating material are provided between said first and second magnetic cores, magnetic fluxes of said first and second magnetic cores excited by said coils leak from said recording gap so that recording onto a recording medium is carried out. In said recording head, a distance from said end of said recording gap close to said magnetic medium to a contact point of said magnetic joint (hereinafter, yoke length) is not more than 20 μm. A magnetic recording/reproduction apparatus has this head.