Magnetic-recording-disk test-head and method of manufacturing a magnetic-recording disk using the magnetic-recording-disk test-head
View Patent ↗A magnetic-recording-disk test-head. The magnetic-recording-disk test-head includes a slider, a test pad and a slider-surface-shape control mechanism. The slider includes a leading edge and a trailing edge. The test pad is disposed at a trailing-edge side of the slider and is configured to remove and to detect asperities on a magnetic-recording disk. The slider-surface-shape control mechanism is configured to change a shape of an air-bearing surface of the slider and is disposed at a leading-edge side of the slider.
1. A magnetic-recording-disk test-head, comprising:
a slider having a leading edge and a trailing edge,
a test pad disposed at a trailing-edge side of said slider, said test pad configured to detect and remove and to detect asperities on a magnetic-recording disk, and
a slider-surface-shape control mechanism, wherein said slider-surface-shape control mechanism is configured to change a shape of an air-bearing surface of said slider and is disposed at a leading-edge side of said slider.
2. The magnetic-recording-disk test-head of claim 1 , wherein said test pad has mesh-like grooves on a surface thereof.
3. The magnetic-recording-disk test-head of claim 1 , wherein a plurality of slider-surface-shape control mechanisms are disposed on said magnetic-recording-disk test-head and are configured to be arranged along a substantially radial direction of said magnetic-recording disk, and said plurality of slider-surface-shape control mechanisms are configured to be independently controlled to control a roll of said slider.
4. The magnetic-recording-disk test-head of claim 3 , wherein said test pad has mesh-like grooves on a surface thereof.
5. A magnetic-recording-disk test-head, comprising:
a slider having a leading edge and a trailing edge, and
a test pad disposed at a trailing-edge side of said slider, said test pad configured to detect and remove and to detect asperities on a magnetic-recording disk,
wherein said test pad has a slider-surface-shape control mechanism, said slider-surface-shape control mechanism configured to control a distance between said test pad and a recording surface of said magnetic-recording disk.
6. The magnetic-recording-disk test-head of claim 5 , wherein said test pad has mesh-like grooves on a surface thereof.
7. The magnetic-recording-disk test-head of claim 5 , wherein a plurality of slider-surface-shape control mechanisms are disposed on said magnetic-recording-disk test-head and are configured to be arranged along a substantially radial direction of said magnetic-recording disk, and said plurality of slider-surface-shape control mechanisms are configured to be independently controlled to control a roll of said slider.
8. The magnetic-recording-disk test-head of claim 7 , wherein said test pad has mesh-like grooves on a surface thereof.
9. A method of manufacturing a magnetic-recording disk, said method comprising:
rotating said magnetic-recording disk;
positioning a magnetic-recording-disk test-head on a predetermined track of said magnetic-recording disk, said magnetic-recording-disk test-head including:
a slider having a leading edge and a trailing edge,
a test pad that is disposed at a trailing-edge side of said slider, said test pad configured to detect and remove and to detect asperities on said magnetic-recording disk, and
a slider-surface-shape control mechanism, said slider-surface-shape control mechanism configured to change a shape of an air-bearing surface of said slider;
driving said slider-surface-shape control mechanism of said magnetic-recording-disk test-head to control a pitch of said slider, so that said test pad is placed in contact with said magnetic-recording disk;
driving said slider-surface-shape control mechanism while reducing an applied electrical power to correspond to a desired fly-height from an applied electrical power when said test pad contacts said magnetic-recording disk, so that fly-height is corrected to said desired fly-height; and
burnishing a recording surface of said magnetic-recording disk by said magnetic-recording-disk test-head.
10. The method of manufacturing a magnetic-recording disk of claim 9 , wherein said slider-surface-shape control mechanism is disposed at a leading-edge side of said slider.
11. The method of manufacturing a magnetic-recording disk of claim 10 , wherein said magnetic-recording-disk test-head has a plurality of said slider-surface-shape control mechanisms that are configured to be arranged along a substantially radial direction of said magnetic-recording disk, and are configured to be independently controlled to control a roll of said slider.