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Featured researches published by Hiroyuki Kita.


IEEE Transactions on Magnetics | 2002

Manufacturing process of piezoelectric thin-film dual-stage actuator and its reliability for HDD

Hideki Kuwajima; Hirokazu Uchiyama; Yuko Ogawa; Hiroyuki Kita; Kaoru Matsuoka

A new dual-stage actuator for positioning a magnetic head for high-density hard disk drives was proposed and developed. This dual-stage actuator device is characterized by the sputter-deposited thin-film PZT, featuring large displacement of 1.2 /spl mu/m and high-resonance frequency over 15 kHz. In this paper, reliability against temperature, humidity, and mechanical shock was investigated to ensure the practical application to the drive products.


Archive | 2002

A METHOD OF MANUFACTURING A THIN FILM PIEZOELECTRIC ELEMENT

Hirokazu Uchiyama; Yuko Ogawa; Hiroyuki Kita


Archive | 2005

Ferroelectric thin film element and its manufacturing method, thin film capacitor and piezoelectric actuator using same

Hiroyuki Kita


Archive | 2003

Drive method of piezoelectric material actuator, and the piezoelectric material actuator, and disk recording/reproducing apparatus using the actuator

Hiroyuki Kita; Hideki Kuwajima; 弘行 喜多; 秀樹 桑島


Archive | 2003

Driving method of piezoelectric actuator, piezoelectric actuator, and disk recording and reproducing apparatus using the same

Hiroyuki Kita; Hideki Kuwajima


Archive | 2006

User interface for computer display

Hiroyuki Kita; Masashi Tanaka


Archive | 2002

Piezoelectric thin-film element and a manufacturing method thereof

Hiroyuki Kita; Hirokazu Uchiyama


Archive | 2002

Thin film piezoelectric element and its manufacturing method

Hirokazu Uchiyama; Yuko Ogawa; Hiroyuki Kita


Archive | 2004

Piezoelectric film device, and driving method of the same

Hiroyuki Kita; Hirokazu Uchiyama; Toshiyuki Matsunaga; Fumiyo Tojo


Archive | 2004

Piezoelectric device and its manufacturing method

Hiroyuki Kita

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