Mitsubishi Denki Kabushiki Kaisha

Hitoshi Tamayama

Satoru Akutsu

Seiichi Watanabe

Yuji Nakahara

Nobuaki Miyake

Seiichi Handa

Naoto Sugawara

Hirofumi Ouchi

Takeshi Oouchi

A radial gap type medium driving motor for rotating a recording medium has first coil units having first windings of a first number of layers and second coil units having second windings of a second number of layers that is larger than the first number of layers. The first and second coil units are formed by winding wire on tooth-like poles of tooth-like pole blocks of a stator. A frame provided with a bearing portion for rotatably supporting the medium driving motor has a first accommodating portion for accommodating the first coil units and second accommodating portions for accommodating the second coil units.

Magnetic recording apparatus having medium driving motor with reduced

A magnetic head assembly comprises a magnetic head, a magnetic head support structure having a first mount, a second mount and a housing space, and an optical unit fixed to the second mount, capable of projecting a plurality of light beams through a light passage on a recording medium and of receiving a plurality of reflected light beam. The optical unit comprises a light emitting device which emits a light beam, a holographic unit capable of producing a plurality of light beams from the light beam and of focusing the plurality of light beams on a position sensing track formed on the recording medium, and a photodetection device for receiving the plurality of reflected light beams. The holographic unit is partly received in the housing space.

Reduced profile magnetic head assembly and method of manufacturing

Growing community of inventors

Tokyo, Japan

Hitoshi Tamayama