초록 ▼

A method of and apparatus for burnishing a surface of a magnetic disc of a disc drive are disclosed. The disc drive has a data head and an actuator supporting the head as the head flies above the surface of the disc. A controller causes the disc to be rotated at rates of rotation which will result i

A method of and apparatus for burnishing a surface of a magnetic disc of a disc drive are disclosed. The disc drive has a data head and an actuator supporting the head as the head flies above the surface of the disc. A controller causes the disc to be rotated at rates of rotation which will result in burnishing head fly heights which are less than a normal operational fly height of the head. An actuator controller controls the actuator to repeatedly move the head across a region of the disc during a burnishing time period. The head flies above the surface of the disc at the burnishing fly heights during the burnishing time period to thereby reduce asperities on the disc.

대표청구항 ▼

[ What is claimed is:] [1.] A method of burnishing a surface of a magnetic disc of a disc drive, the disc drive having a magnetic data head and an actuator coupled to the head for supporting the head as the head flies above the surface of the disc, the method comprising:rotating the disc at rates of

[ What is claimed is:] [1.] A method of burnishing a surface of a magnetic disc of a disc drive, the disc drive having a magnetic data head and an actuator coupled to the head for supporting the head as the head flies above the surface of the disc, the method comprising:rotating the disc at rates of rotation which will result in burnishing head fly heights which are less than a normal operational head fly height of the head;controlling the actuator to thereby repeatedly move the head across a region of the disc in a generally radial direction during a burnishing time period, wherein the head flies above the surface of the disc at the burnishing fly heights during the burnishingmoving the actuator and the head relative to the disc surface with an actuator motor wherein actuator motor back electromotive force (EMF) is sensed during the burnishing time period to control the actuator as a function of the sensed actuator motor back EMF.