Fujitsu Corporation

Mitsumasa Oshiki

Susumu Kawakami

Motoichi Watanuki

Nobuo Iijima

Seiya Ogawa

A magnetic recording method using a magnetic head to record information in an information recording medium and read the information recorded on the information recording medium is such that the temperature of a portion of the information recording medium on or from which information is recorded or read is changed in order to record or read information. A disk device having the ability to record and read information comprises a magnetic head for recording information by applying a given magnetic field to an information recording medium and reading the information from the information recording medium; and a temperature changing mechanism for changing the temperature of a portion of the information recording medium on or from which information is recorded or read. The magnetic head is moved to the portion of the medium in which a temperature change is produced by the temperature changing mechanism, whereby information is recorded or read.

Method for using heat to record on magnetic medium and disk apparatus having temperature changing device

According to a method of manufacturing a magnetic head, a magnetoresistive device is formed on a substrate, a top end portion of the magnetoresistive device is placed in an external magnetic field, and a height of the magnetic head is adjusted by ceasing a polishing operation at an instant when change in resistance of the magnetoresistive device relative to change in the external magnetic field comes up to a predetermined value.

Magnetoresistive type magnetic head and method of manufacturing the same and apparatus for polishing the same

A magnetic head for perpendicular magnetic recording system which assures low write current and high recording reproduction efficiency by using a flat coil and increasing the number of turns of the coil. The flat coil is formed on a substrate and a main pole piece is arranged in the center of the coil and vertically to the surface on which the coil is formed. This magnetic head is suitable particularly for manufacture as a thin film magnetic head.

Growing community of inventors

Kawasaki, Japan

Mitsumasa Oshiki