Spacer ring reservoir for magnetic recording disk lubricant

Details Spacer ring reservoir for magnetic recording disk lubricant Spacer ring reservoir for magnetic recording disk lubricant

1994-06-17

1995-01-10

Levy, Stuart S.

Dynamic magnetic information storage or retrieval

Record transport with head stationary during transducing

Disk record

360 97, 360103, G11B 1732, G11B 560

Patent

active

053812840

ABSTRACT:
A lubricant reservoir system for a magnetic disk near contact data storage device, which rotates in unison with the disk assembly to replace lubricant depleted from the disk surface over the life of the device, includes reservoir chambers in disk spacers with lubricant metering provided by restricted passages or textured surfaces extending radially outward from the reservoir chamber while replacement air passages extend radially inward to replace dispensed lubricant. The metered lubricant is delivered to the disk surface at a location where the surface confronting the disk is made compliant with the disk surface and the adjoining surface is beveled to form an angle of more than 90 degrees with the disk surface thereby preventing migration of lubricant away from the disk. Nonwettable surfaces may be used in metering passages, air passages, and on some beveled surfaces to further control lubricant metering. In operation, the high G forces induced by rotation cause lubricant to be metered to the disk while the same small metering passages function as a barrier when the disk assembly is not rotating.

REFERENCES:
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patent: 4873594 (1989-10-01), Chen
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patent: 5193046 (1993-03-01), Lemke et al.
patent: 5198934 (1993-03-01), Kubo et al.
patent: 5202803 (1993-04-01), Albrecht et al.

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