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. 20, 1987
Filed:
Sep. 19, 1985
Osamu Inagoya, Ibaragi, JP;
Hideo Fujiwara, Ibaragi, JP;
Takeshi Tottori, Toride, JP;
Minoru Yamano, Ibaraki, JP;
Noriyuki Kumasaka, Oume, JP;
Shigekazu Otomo, Sayama, JP;
Mitsuhiro Kudo, Tokyo, JP;
Juiti Morikawa, Katsuta, JP;
Kiyoshi Ishihara, Yokohama, JP;
Akira Usui, Ibaragi, JP;
Masashi Hayashi, Ibaragi, JP;
Hitachi Maxell, Ltd., Osaka, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A magnetic head having a pair of core halves each combined through a magnetic gap, each of the core halves comprising a core base having slanted side surfaces on the side opposing to the magnetic gap and a magnetic thin layer formed on the surfaces of the core base on the side opposing the magnetic gap with magnetic material of high saturation magnetic flux density, the minimum value of the sum of products of vertical cross sectional areas of the respective magnetic paths of each of the core halves except for the path of the magnetic gap and the respective saturation magnetic flux densities of the respective parts is greater than the product of the area of the magnetic gap and the saturation magnetic flux density of the magnetic thin layer.