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:
Jun. 20, 1989
Filed:
Jan. 20, 1987
Tadashi Imanaka, Odawara, JP;
Masayuki Takagi, Odawara, JP;
Eisei Togawa, Odawara, JP;
Harunobu Saito, Odawara, JP;
Sadanori Nagaike, Odawara, JP;
Masaki Ohura, Odawara, JP;
Saburo Suzuki, Minamiashigara, JP;
Tetsuo Kobayashi, Ashigarakami, JP;
Shunichiro Kuwatsuka, Odawara, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A thin film magnetic head having two conductor layers provided within a magnetic circuit constituted by a first and a second magnetic member. The magnetic circuit has, at the side to which a recording medium is opposed, a portion where the first and second magnetic members are opposed to each other over a length substantially equal to a gap depth, intervening a non-magnetic gap member therebetween, and a portion ahead thereof where they are connected with each other. The edge of the gap member constitutes an aperture of the magnetic circuit. The thin film magnetic head arranged as above permits a high density recording without reducing its production yield.