System, method and apparatus to prevent the formation of lubricant lines on magnetic media

摘要

A system for preventing the accumulation of excess lubrication in the form of lubricant lines on magnetic media disks for hard disk drives uses a mandrel design that produces negligible surface waves when the disks are dipped in lubricant baths. The mandrel has inverted tear drop shaped supports for the disks. The supports are smaller in overall size than an inner diameter hole formed in the disks and diminish the formation of waves in the lubricant bath.

主权项

1. A system for lubricating media disks, comprising:
a bath containing a volume of lubricant; a plurality of flat media disks, each having an inner diameter hole; a fixture for supporting and dipping the media disks in the volume of lubricant in the bath, the fixture having a mandrel with an axis; dividers mounted to the mandrel and defining slots between the dividers for supporting one media disk through a respective inner diameter hole, each divider having an upper end, side edges, and a lower end, and the lower end of each of the dividers is axially spaced apart from the lower end of adjacent ones of the dividers relative to the mandrel axis; the dividers axially abut adjacent ones of the dividers relative to the mandrel axis; and the upper end protrudes above the mandrel by an upper distance, the side edges protrude laterally from the mandrel by a side distance that is greater than or equal to the upper distance, the lower end protrudes below the mandrel by a lower distance, and the lower distance is greater than the side distance.