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US 6,656,333 B2Granted
Process for making patterned magnetic recording media employing a nonfunctional lubricant
AssigneeSeagate Technology LLC
InventorsJean Ling Lee, Jing Gui
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Abstract
A magnetically patterned hard disk is made by sputtering the magnetic layers, sputtering the carbon layer, applying a nonfunctional lubricant, buff/wiping the disk to remove sputtering debris and asperities, removing the nonfunctional lubricant using a standard degreasing process, applying and patterning a resist, and thereafter subjecting the exposed disk to inert ion irradiation.
Claims8
A process for making a patterned media disk, comprising;
- sputter-depositing one or more magnetic layers onto a media disk substrate;
- sputter-depositing a protective overcoat layer;
- applying a lubricant on the protective overcoat layer;
- buff/wiping the lubricated disk to remove debris;
- removing the lubricant;
- and
- exposing the media disk to an effective amount of ion radiation to reduce magnetic remanence in selected portions of the disk.
4 more elements
Dependencies are inferred from the claim text.