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:
Aug. 28, 1990
Filed:
May. 17, 1989
Makoto Kameyama, Urayasu, JP;
Kiyozumi Niizuma, Ohmiya, JP;
Kenichi Nagasawa, Kawasaki, JP;
Takashi Suzuki, Yokohama, JP;
Toshio Yamanaka, Kawasaki, JP;
Tsuyoshi Orikasa, Kasukabe, JP;
Fujihiro Ito, Tsurugashima, JP;
Kazuyo Yoshida, Kawasaki, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A magnetic head including pair of core halves joined opposite to each other, each core half including a first magnetic material on which is deposited a magnetic film of a second magnetic material having a high saturation magnetic flux density and a low magnetic permeability compared with the first magnetic material, both the magnetic films having a magnetic gap arranged therebeteween, includes a pair of nonmagnetic members, each of which is adjacent to each end of the magnetic gap, in a surface of the head, along which a recording medium slides, wherein each of the magnetic films extends along the outer edge of the nonmagnetic member adjacent to one of the core halves, and the boundary between the first magnetic material and the second magnetic material includes a portion extending outward and a portion extending parallel to the magnetic gap and out of alignment with the first-mentioned portion.