Mitsubishi Denki Kabushiki Kaisha

Mitsubishi Denki K.k.

Hiromasa Ishii

Seiichi Handa

Hirofumi Ouchi

Yoshio Kasuga

Tatsunori Hibara

Masao Kouhashi

Seiichi Watanabe

Kouichi Yamada

Toshihisa Obuse

Hiroshi Kobayashi

A method for manufacturing a magnetic head core of a complex magnetic head includes binding a first core material of a U-shaped cross section and a second core material of a flat plate shape to form a tubular core material having two bonded portions between the first and second core materials. Then a plurality of grooves are formed in the tubular core material across one of the bonded portions to form a plurality of track surfaces. The grooves are then filled with a fused glass material, and the other of the bonded portions is removed to form a substantially U-shaped core block having a plurality of track surfaces separated by the glass-filled grooves. The U-shaped core block is then sliced along each of the grooves to obtain a plurality of magnetic head cores. A complex magnetic head manufactured by the method is also disclosed.

Complex magnetic head and manufacturing method of complex magnetic head core

Manufacturing method of complex magnetic head core

A complex magnetic head in which magnetically separated upper and lower rank core chips are spaced apart and connected to a support block made of a nonmagnetic material in such a way as to be in parallel with each other. Each of the upper and lower rank core chips have first, second and third cores. Magnetic gaps, whose track widths are different from each other, are provided between the first and second cores of one of the upper and lower rank core chips and between the second and third cores of the other of the upper and lower rank core chips, respectively.

Complex magnetic head having upper and lower rank core chips and method

Growing community of inventors

Tokyo, Japan

Hiromasa Ishii