Dynamic magnetic information storage or retrieval – Fluid bearing head support – Disk record
Reexamination Certificate
2002-03-01
2009-08-11
Davis, David D (Department: 2627)
Dynamic magnetic information storage or retrieval
Fluid bearing head support
Disk record
Reexamination Certificate
active
07573677
ABSTRACT:
Disclosed is a system and a method for reducing high frequency interference pickup by the read element of the magneto-recording head. The reduction is achieved by reducing the parisitic capacitance between certain elements of the magnetic head. In one embodiment, the areas of the pads and leads, including the areas of the leads over the S1 and the areas of the sensor leads, are reduced. A second implementation involves increasing the separation between the pads and leads and the substrate material. Copper studs or vias may be used to connect the contact pads and the underlying layers. A third implementation includes using a low dielectric constant material as a spacer layer between conductors (leads, pads, magnetic shields) and the substrate.
REFERENCES:
patent: 3781486 (1973-12-01), Maryatt et al.
patent: RE29326 (1977-07-01), Lazzari et al.
patent: 4789910 (1988-12-01), Otsuka et al.
patent: 4807073 (1989-02-01), Takeura et al.
patent: 5001591 (1991-03-01), Nakashima
patent: 5048175 (1991-09-01), Jurisch et al.
patent: 5122916 (1992-06-01), Aranovsky
patent: 5483392 (1996-01-01), Ishida
patent: 5771568 (1998-06-01), Gustafson
patent: 5772797 (1998-06-01), Nakanishi et al.
patent: 5805390 (1998-09-01), Takeura
patent: 5820980 (1998-10-01), Asakawa et al.
patent: 5898548 (1999-04-01), Dill et al.
patent: 5923502 (1999-07-01), Christensen et al.
patent: 5966800 (1999-10-01), Huai et al.
patent: 6034847 (2000-03-01), Komuro et al.
patent: 6122148 (2000-09-01), Hamaguchi et al.
WW Brooks Jr., JB Brown, EA Cunningham, JH Mahanna, “On-Head Shield for a Hard File Servo Head”, Apr. 1989.
Burleson Mark Allen
Nikitin Vladimir
Salo Michael Paul
Smith Robert Langland
Yuan Samuel W.
Davis David D
International Business Machines - Corporation
Kunzler & McKenzie
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