Seiko Epson Corporation

Mitsuhiro Horikawa

Tatsuya Shimoda

Hiroshi Ito

Koji Akioka

Tsugio Ide

Michio Yanagisawa

An actuator rotatable about a support shaft rectilinearly movable along axis of a shaft and rotatably movable about the shaft includes a cylindrical magnet extending about the shaft. The cylindrical magnet has a plurality of poles in the radial direction and magnetized boundaries between poles of opposite polarity extending in a circumferential direction of the magnet and extending in an axial direction of the magnet. A plurality of yokes are provided to define magnetic poles coupled in facing relationship with the magnetic boundaries of a cylindrical magnet and having coils coupled thereto to define the magnetic poles.

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Suwa, Japan

Mitsuhiro Horikawa