Electricity: measuring and testing – Magnetic – Magnetic information storage element testing
Reexamination Certificate
2008-03-14
2011-11-22
Phan, Huy Q (Department: 2858)
Electricity: measuring and testing
Magnetic
Magnetic information storage element testing
C324S262000, C324S260000, C324S261000, C324S211000, C324S212000, C360S031000
Reexamination Certificate
active
08063630
ABSTRACT:
In testing thin-film magnetic heads, first, a back surface opposite to a medium facing surface of each of a plurality of thin-film magnetic heads is attached to a first surface of a first plate of a jig, the jig including the first plate of rubber having the first and second surfaces facing toward opposite directions, and a second plate greater in rigidity than the first plate and bonded to the second surface of the first plate. Next, the plurality of thin-film magnetic heads and the jig are mounted on a metal plate having a flat top surface, such that the medium facing surfaces of the thin-film magnetic heads touch the top surface of the metal plate. Next, heat-generating components of the plurality of thin-film magnetic heads mounted on the metal plate are energized.
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Sang et al., “Comparison of the Magnetic Recording Performance of Medium-Scale Ring, Double-Sided Pole, Metal-In-Gap Heads on High-Coercivity Longitudinal Media”, Sep. 1987, IEEE Transactions on Magnetics, MAG-23, No. 5, pp. 2085-2087.
Kamimura Takamitsu
Sugahara Masato
Yumoto Kenji
Brown Lamarr
Oliff & Berridg,e PLC
Phan Huy Q
TDK Corporation
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