Disk drive having an electrically isolated disk stack

Details Disk drive having an electrically isolated disk stack Disk drive having an electrically isolated disk stack

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G11B 5/10 (2006.01) G11B 5/11 (2006.01) G11B 5/127 (2006.01) G11B 5/40 (2006.01) G11B 25/04 (2006.01) G11B 33/14 (2006.01)

Patent

CA 2023029

A disk drive in which the rotatable magnetic memory disks and the metal actuator are electrically isolated from the metallic mainframe of the disk drive and the magnetic heads on the metallic actuator, the coils of the magnetic heads and the magnetic memory disks are maintained at electrical potential levels which are sufficiently close to prevent arcing therebetween and which is different from the potential of the main frame. Electrical isolation is achieved by electrically insulating the disk spindle on which the disks are journaled from the mainframe and by electrically insulating the metal actuator from the metal actuator support when the metal actuator support is attached directly to the main frame, or by electrically insulating the metal actuator support from the main frame. An electrical potential is applied to the disks via the disk spindle and to the body of the magnetic heads via the metal actuator arm to provide potential levels which among these parts are sufficiently close to prevent arcing.

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