Apparatus and method for testing magnetic heads using translatio

Details Apparatus and method for testing magnetic heads using translatio Apparatus and method for testing magnetic heads using translatio

1996-01-18

1998-09-01

Patidar, Jay M.

Electricity: measuring and testing

Magnetic

Magnetic information storage element testing

360106, 369222, G01R 3312, G11B 554, G11B 2114

Patent

active

058015310

ABSTRACT:
An apparatus for testing magnetic heads that interact with magnetic disks includes a translational slide and a rotatable arm mounted to one end of the slide. The translational slide moves the rotatable arm in a longitudinal direction parallel to the surface of a magnetic disk. The arm rotates the magnetic head to different positions relative to data tracks on the disk. A second translational slide moves the magnetic head vertically above the disk to adjust the vertical position of the head. The three movements of the head, (1)horizontally across the disk, (2)rotationally by the arm, and (3)vertically relative to the disk surface are controlled by servomechanisms. A read/write amplifier circuit is connected to the head under test. The test apparatus is controlled by a computer that interfaces with circuitry connected to the servomechanisms.

REFERENCES:
patent: 5491413 (1996-02-01), Guzik
Fletcher et al., Automated multiple-head disk testing machine, IBM Technical Disclosure Bulletine, vol. 22, No. 3, Aug. 1979.

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