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:
Oct. 12, 1993
Filed:
May. 08, 1991
Yoshiaki Kato, Minami Ashigara, JP;
Noboru Komori, Minami Ashigara, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
A thin-film magnetic head comprising a substrate formed of a material having an electric resistivity of not higher than 150 ohm-cm and an electromagnetic transducer unit, the transducer unit is formed on the substrate and comprises a lower magnetic film directly attached to the substrate, a magnetic gap layer, a coil conductor layer, at least an insulating layer and an upper magnetic layer. The lower magnetic film is formed as a flat surface extending over the coil conductor layer, and parts, neighboring the magnetic gap region, of the end face directed to the recording medium are receded with the insulating layer being inorganic material.