Magnetic head

Abstract

Abstract PURPOSE:To form a sufficiently large thin film boundary face without increasing the thickness of thin film by providing a notch reaching a core major part from a thin film edge made of a magnetic material so as to form the thin film as nearly isosceles trapezoid by the notch. CONSTITUTION:The magnetic head consists of the magnetic core major parts 1, 2 made of an oxide magnetic material (ferrite), thin films 3, 4 made of an alloy magnetic material such as ''Sendust'' added to a front gap F and a spacer 5. Then the thin film 3 is formed nearly as an isosceles trapezoid with the notches 8a, 8b having ridge lines 7a, 7c from the edges 3a, 8b of the thin film to side faces 1b, 1c of the core major parts 1, 2 and the opposed thin film 4 is formed similarly. Thus, a cross angle between imaginary lines orthogonal to the ridge lines 7a-7d and a gap F is large enough and the sufficiently large thin film boundary face is formed without increasing the film thickness as a conventional method.

Inventors

• 👤 Yoshiaki Shimizu
• 👤 良昭 清水
• 👤 Masaru Doi
• 👤 勝 土井
• 👤 Kazuo Ino
• 👤 伊野　一夫

Bibliographic Details