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:
Feb. 16, 1982
Filed:
Dec. 03, 1979
Hideo Fujiwara, Tachikawa, JP;
Mitsuhiro Kudo, Hamuramachi, JP;
Teizou Tamura, Katsuta, JP;
Nobuyuki Sugishita, Yokosuka, JP;
Yoshihiro Shiroishi, Higashimurayama, JP;
Takeshi Kimura, Kokubunji, JP;
Kiminari Shinagawa, Shiroyamachi, JP;
Noriyuki Kumasaka, Ohme, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
In a magnetic head a single-crystal Mn--Zn ferrite is employed as a core material, and cut-away parts in the vicinities of a gap are filled with a glass the contraction rate of which is lower than that of the ferrite. A principal magnetic circuit-forming plane of the core is brought into agreement with the {1 1 0} plane of the ferrite, while an angle .theta. defined between the <1 0 0> direction within the {1 1 0} plane of the ferrite and a gap forming plane is made 5.degree.-40.degree. or 80.degree.-120.degree.. The magnetic head thus constructed exhibits very favorable write and read characteristics.