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Featured researches published by Akira Hiramatsu.


Journal of the Acoustical Society of America | 1985

Piezoelectric vibration wave motor with multiple traveling wave generating members

Tohru Kawai; Makoto Katsuma; Hiroyasu Murakami; Akira Hiramatsu; Naoya Kaneda

In a vibration motor, electrostrictive elements arranged or polarized phase-differentially are bonded to a plurality of concentric ring-shaped vibration members arranged on at least one of a stator and a rotor, voltages are applied to the electrostrictive elements to generate travelling vibration waves in the vibration members and the rotor contacting to the vibration members is friction-driven by the travelling vibration wave.


Archive | 1985

Exposure-control apparatus

Akira Ishizaki; Akira Akashi; Keiji Ohtaka; Yasuo Suda; Akira Hiramatsu


Archive | 2011

Focus detection apparatus

Yasuo Suda; Akira Ishizaki; Keiji Ohtaka; Akira Akashi; Akira Hiramatsu


Archive | 1997

Recording apparatus and method for correction of discharge failure and density unevenness

Akira Hiramatsu; Kiyoharu Tanaka; Yasuyuki Takanaka


Archive | 1993

Image forming apparatus with ink jet and electrophotographic recording units

Kiyoharu Tanaka; Takashi Uchida; Akira Hiramatsu; Haruhiko Takahashi; Atsushi Munakata


Archive | 1983

Drive system for a vibration wave motor for lens control

Makoto Katsuma; Hiroyasu Murakami; Akira Hiramatsu


Archive | 1986

Apparatus for detecting shake of image of object

Yasuo Suda; Akira Akashi; Akira Hiramatsu


Archive | 1986

Auxiliary light source for camera having automatic focusing device

Masaharu Kawamura; Akira Hiramatsu


Archive | 1983

Piezoelectrically driven vibration wave motor

Hiroshi Yamamoto; Makoto Katsuma; Hiroyasu Murakami; Akira Hiramatsu


Archive | 1993

Recording apparatus and method for manufacturing recorded product thereby

Akira Hiramatsu; Akio Suzuki; Yoshihiro Takada; Yasushi Miura; Nobuhiko Ogata

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