Sony Corporation

Tohoku University

Akira Sugawara

Akihiro Konno

Naoyuki Kaneyama

Yoshiharu Iwabuchi

Takayuki Doi

Atsushi Yokoyama

Susumu Suzuki

The present invention provides a compound represented by chemical formula (I) or a pharmaceutically acceptable salt thereof, and a pharmaceutical composition containing the same.

1, 3-dioxolane derivative

A method for making a magnetic head formed with a pair of magnetic core halves fitted to abut on each other having a nonmagnetic gap therebetween and having a slide contact plane for slide contact with a magnetic recording medium on which an end face of the nonmagnetic gap and the magnetic core halves. In the method, a nonmagnetic portion formed by filling a glass material is provided at an end portion of the slide contact plane other than the end face of the magnetic core halves on the slide contact plane.

Method of making a magnetic head with ferrite between nonmagnetic portions and a nonmagnetic gap

There is provided a magnetic head formed with a pair of magnetic core halves fitted to abut on each other having a nonmagnetic gap therebetween and having a slide contact plane for slide contact with a magnetic recording medium on which an end face of the nonmagnetic gap and the magnetic core halves. In the magnetic head, a nonmagnetic portion formed by filling a glass material is provided at an end portion of the slide contact plane outer than the end face of the magnetic core halves on the slide contact plane. The inventive magnetic head realizes less volume of magnetic body while solving problems in mechanical strength of the magnetic head or in compatibility to a conventional head. Accordingly, a magnetic head with excellent head performance without decreasing productivity can be obtained.

Magnetic head with ferrite between nonmagnetic portions and a nonmagnetic gap

Growing community of inventors

Miyagi, Japan

Akira Sugawara