Renner, Otto,Boisselle & Sklar, LLP
Contact tester
 The contact tester of the present invention includes: a holding mechanism for holding a disk and rotating integrally with the disk, an arm driving for driving an arm which supports a slider, the slider is provided with a head for recording/reproducing information on/from the disk. In addition, a first vibration detection element for detecting contact between the slider and the disk is provided. Furthermore, a signal transmission for transmitting an output signal of the first vibration detection element and a signal analysis for analyzing the output signal transmitted via the signal transmission are provided, where the first vibration detection element is mounted at a position where a vibration of the arm is not detected. 
Matsushita Electric Industrial Co., Ltd.
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Koji Kaoru Yoshihiro Masaru
Taniguchi Matsuoka Ueno Nakakita