Metal working – Method of mechanical manufacture – Electrical device making
Reexamination Certificate
2005-08-16
2005-08-16
Tugbang, A. Dexter (Department: 3729)
Metal working
Method of mechanical manufacture
Electrical device making
C029S603120, C029S603130, C029S603150, C029S603180, C029S417000, C029S025350, C216S022000, C216S039000, C216S041000, C360S235400, C360S234300, C360S236500, C360S294700, C451S005000, C451S041000
Reexamination Certificate
active
06928722
ABSTRACT:
A recording/reproduction element is mounted on a magnetic head slider via a piezoelectric element so that a displacement of the piezoelectric element performs fine control of the position of the recording/reproduction, thus enabling fine spacing and high track positioning accuracy. This improves linear recording density and track density. A pair of electrodes are formed on both sides of a piezoelectric element to constitute a piezoelectric actuator. One electrode is arranged opposite the rear surface (air flow out end) of a magnetic head slider11. A recording/reproduction element is arranged on and electrically insulated from the other electrode. The piezoelectric element includes a piezoelectric element displaced in a spacing direction, enabling fine spacing control, a piezoelectric element displaced in the track direction, enabling a fine track position control, and a piezoelectric element displaced in a magnetic disc rotation direction, enabling reduction of jitter of a reproduction signal.
REFERENCES:
patent: 4669011 (1987-05-01), Lemke
patent: 5072240 (1991-12-01), Miyazawa et al.
patent: 5177860 (1993-01-01), Yura et al.
patent: 5327310 (1994-07-01), Bischoff et al.
patent: 5898541 (1999-04-01), Boutaghou et al.
patent: 6246552 (2001-06-01), Soeno et al.
patent: 6289564 (2001-09-01), Novotny
patent: 6327120 (2001-12-01), Koganezawa et al.
patent: 6584660 (2003-07-01), Shimogawa et al.
patent: 0620049 (1994-04-01), None
patent: 61-251307 (1986-11-01), None
patent: 1-107385 (1989-04-01), None
patent: 1-216769 (1989-08-01), None
patent: 3-105716 (1991-05-01), None
patent: 3-245315 (1991-10-01), None
patent: 6-176336 (1994-06-01), None
patent: 7-73619 (1995-03-01), None
patent: 7-235157 (1995-09-01), None
“Natural frequencies of sliders and transducers used to detect slider-disk contacts”; Jeong T.G.; Bogy, D.B.; Magnetics, IEEE Transactions on, vol. 25, Issue: 5 , Sep. 1989; pp. 3725-3727.
“Tribology and Mechanics of Magnetic Storage System Vol. VII”Bharat Bhushan, vol. 7, 1990 pp. 158-164.
“Design and Performance of Piezoelectric Piggyback Actuator for High Density HDD” Soeno et al. Japan Society of Mechanical Engineers, The 75th JSME Spring Annual Meeting No. 98-1, 1998 pp. 208-209.
“A study on a piggy back actuator using LIGA process” Nakamura et al. Japan Society of Mechanical Engineers, The 75th JSME Spring Anneual Meeting No. 98-1, 1998 pp. 210-211.
Hayes & Soloway P.C.
Kim Paul D
TDK Corporation
Tugbang A. Dexter
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