Glide height testing using a glide head apparatus with a piezoel

Details Glide height testing using a glide head apparatus with a piezoel Glide height testing using a glide head apparatus with a piezoel

1999-01-18

2000-08-22

Raevis, Robert

Measuring and testing

Surface and cutting edge testing

Roughness

G01B 528

Patent

active

061054216

ABSTRACT:
A glide head apparatus for testing surface characteristics of a disc includes a gimbal, a slider and an actuator including a piezoelectric material disposed between the gimbal and the slider. A voltage applied across the piezoelectric material is controllable to cause the piezoelectric material to expand or contract depending on the applied voltage so as to vary the fly height between the slider and a disc under test. The fly height can be varied without substantially varying the linear velocity of the disc under test. Methods of testing surface characteristics of a disc using the glide head apparatus also are disclosed.

REFERENCES:
patent: 4624564 (1986-11-01), Dahlgren
patent: 4862029 (1989-08-01), Kasai et al.
patent: 5021906 (1991-06-01), Chang et al.
patent: 5229951 (1993-07-01), Sugita et al.
patent: 5293094 (1994-03-01), Flynn et al.
patent: 5475488 (1995-12-01), Fukuzawa et al.
patent: 5488857 (1996-02-01), Homma et al.
patent: 5612841 (1997-03-01), Johnson
patent: 5638234 (1997-06-01), Hagen
patent: 5701218 (1997-12-01), Boutaghou
patent: 5703684 (1997-12-01), Lu et al.
patent: 5711063 (1998-01-01), Budde et al.
patent: 5757492 (1998-05-01), Tokutomi et al.
patent: 5774305 (1998-06-01), Boutaghou
patent: 5781378 (1998-07-01), Heitkamp et al.
patent: 5796556 (1998-08-01), Boutaghou
patent: 5824920 (1998-10-01), Sugimoto et al.
patent: 5863237 (1999-01-01), Felts et al.
Marchon et al., "Glide Avalanche Prediction From Surface Topography", Transactions of the ASME, vol. 118, Jul. 1996, pp. 644-650.
Kuo et al., "Design of Laser Zone Texture for Low Glide Media", IEEE Transactions on Magnetics, vol. 32, No. 5, Sep. 1996, pp. 3753-3758.

Affiliated with

Also associated with

Rating

Glide height testing using a glide head apparatus with a piezoel does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Glide height testing using a glide head apparatus with a piezoel, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Glide height testing using a glide head apparatus with a piezoel will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-568637