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US 4,907,106 AGranted
Head slider driving mechanism for a magnetic disk apparatus
AssigneeNEC Corporation
InventorTadaharu Yamada
Life of this patent
Estimating the term…
Abstract
A head driving system for a magnetic disk includes a controller which drives the head slider radially during times before takeoff and after landing of the head slider. A decrease in sliding abrasion per unit area of the takeoff and landing zone due to the radial movement of the slider results in less net abrasion damage and prolongs the life of the disk apparatus.
Claims14
A head slider driving mechanism for a magnetic disk apparatus, comprising:
- a magnetic disk including contact-start-stop and data areas separated from each other in a radial direction of said magnetic disk;
- motor means for rotating said magnetic disk;
- a head slider opposed to a surface of said magnetic disk and flying over said surface due to air pressure produced during rotation of said magnetic disk;
- a position actuator mechanism for positioning said head slider in a radial direction of said magnetic disk;
- and
- control means for controlling said position actuator mechanism so as to position said head slider within said contact-start-stop area when said motor means stops the rotation of said magnetic disk, said control means controlling said position actuator mechanism to start to effect the driving of said head slider in a radial direction of said magnetic disk within said contact-start-stop area during a first sliding period in which said head slider slides upon and lifts off from the surface of said magnetic disk at substantially the same time said motor means starts rotating said magnetic disk, and said control means controlling said position actuator mechanism to drive said head slider in a radial direction within said contact-start-stop area during a second sliding period in which said head slider lands on and slides upon the surface of said magnetic disk immediately before said motor means stops rotation of said magnetic disk.
3 more elements
A head slider driving mechanism for a magnetic disk apparatus, comprising:
- a magnetic disk including contact-start-stop and data areas separated from each other in a radial direction of said magnetic disk;
- motor means for rotating said magnetic disk;
- a head slider opposed to a surface of said magnetic disk and flying over said surface due to air pressure produced during rotation of said magnetic disk, said head slider comprising side rails extending perpendicularly to said radial direction, and said contact-start-stop area having a radial width which is greater than a width of said head slider by an amount corresponding to at least one width of one of said side rails;
- a position actuator mechanism for positioning said head slider in a radial direction of said magnetic disk;
- and
- control means for controlling said position actuator mechanism so as to position said head slider within said contact-start-stop area when said motor means stops the rotation of said magnetic disk, said control means controlling said position actuator mechanism to start to effect the driving of said head slider in a radial direction of said magnetic disk within said contact-start-stop area during a first sliding period in which said head slider slides upon and lifts off from the surface of said magnetic disk at substantially the same time said motor means starts rotating said magnetic disk.
3 more elements
Dependencies are inferred from the claim text.