Magnetic disk slider having piezo-electric vibration elements
AssigneeInternational Business Machines Corporation
InventorsTakao Chikazawa, Akihiko Aoyagi, Atsushi Tobari
Life of this patent
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Abstract
In the slider 1 on which a transducer 5 is mounted and which moves above a recording surface 4, in order to generate different vibration modes according to various situations such as vertical lift-off and landing, and breaking away from stiction, etc. A plurality of piezo-electric elements 8A, 8B, 8C, and 8D are disposed on the slider 1 and means for supplying a different AC voltage to each of the piezo-electric elements 8A, 8B, 8C, and 8D is provided.
Claims16
A slider for moving a transducer above a recording surface comprising:
- a leading edge;
- a trailing edge;
- a first side;
- a second side;
- a plurality of piezo-electric elements disposed on said slider;
- and
- means for supplying AC voltages to a plurality of the piezo-electric elements to induce vibration of said slider.
A disk storage apparatus comprising:
- a rotatable disk having a recording surface;
- a transducer for writing or reading data to or from said recording surface;
- a slider which moves over the said recording surface of said disk, said slider having said transducer attached thereto;
- a plurality of piezo-electric elements which are disposed on said slider;
- and
- means for supplying AC voltages to a plurality of the piezo-electric elements to induce vibration of said slider.
A method for changing the attitude of a slider in a disk storage apparatus where the slider has a leading edge, a trailing edge, a first side, and a second side, said method comprising the steps of:
- attaching at least one piezo-electric element, which changes shape in response to a voltage being applied to the piezo-electric element, to the slider;
- and
- applying an AC voltage to the piezo-electric element to change its shape and move the center of gravity of the slider.
Dependencies are inferred from the claim text.