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:
Sep. 24, 2002
Filed:
Mar. 20, 2000
Kazuhiro Nakamoto, Odawara, JP;
Hiroyuki Hoshiya, Odawara, JP;
Takashi Kawabe, Hitachi, JP;
Hiromasa Takahashi, Hachioji, JP;
Hisashi Kimura, Odawara, JP;
Katsuro Watanabe, Odawara, JP;
Chiaki Ishikawa, Kokubunji, JP;
Kaori Totsuka, Mitaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
The present invention is to realize a magnetic recording and reproducing apparatus in which even if a spacing between shields of a magnetic head is narrowed, a deterioration in characteristic caused by a short-circuiting between a magnetoresistive layer and a magnetic shield layer is prevented to provide a high recording density. The present invention comprises an upper shield layer a lower shield layer and a magnetoresistive layer arranged therebetween. Further, there is provided a constitution in which one or both shield layers has (have) a high resistance layer comprising a mixed layer of ferromagnetic metal and an insulating material, or a discontinuous multi-layer having a plurality of ferromagnetic metal layers and a plurality of insulating material layers laminated alternately, to prevent a deterioration in characteristic caused by a short-circuiting.