Claims
- 1. A method of manufacturing a patterned magnetic recording medium, comprising steps of:(a) providing a non-magnetic substrate including at least one major surface; (b) providing a stamper having a recess-patterned surface comprising a negative image of a pattern of recesses to be formed in said medium; (c) forming a layer of a partially dried sol-gel material (“material”) having a first surface in conformal contact with said recess-patterned surface of said stamper and an exposed second surface opposite said first surface; (d) placing said major surface of said substrate in contact with said exposed second surface of said layer of material; and (e) removing said recess-patterned surface of said stamper from contact with said first surface of said layer of material; whereby said layer of material is transferred to said major surface of said substrate, such that said second surface of said layer of material is in contact with said major surface of said substrate, and said first surface of said layer of material is exposed and includes a positive image of said pattern of recesses.
- 2. The method according to claim 1, wherein:step (a) comprises providing a disk-shaped, high modulus substrate having a pair of major surfaces and comprised of a glass, ceramic, or glass-ceramic material.
- 3. The method according to claim 1, wherein:step (b) comprises providing a stamper wherein at least said patterned surface is comprised of a metal, polymer, or carbon.
- 4. The method according to claim 1, wherein:step (b) comprises providing a stamper having a recess-patterned surface comprising a negative image of a servo pattern to be formed in said magnetic recording medium.
- 5. The method according to claim 1, wherein:step (c) comprises forming a layer of a partially dried sol-gel material comprising a micro-porous structure of silica (SiO2) particles with solvents saturated in the micro-pores thereof.
- 6. The method according to claim 5, wherein:step (c) comprises spin coating a layer of a SiO2-containing sol solution on said recess-patterned surface of said stamper.
- 7. The method according to claim 5, wherein:step (a) comprises providing a non-magnetic substrate wherein a spin-coated, partially dried layer of a sol-gel material comprising a micro-porous structure of silica (SiO2) particles with solvents saturated in the micro-pores thereof comprises said at least one major surface.
- 8. The method according to claim 5, further comprising the step of:(f) converting said layer of partially dried sol-gel material to a glass or glass-like layer while preserving said pattern of recesses in said exposed first surface thereof.
- 9. The method according to claim 8, wherein:step (f) comprises sintering said layer of partially dried sol-gel material at an elevated temperature.
- 10. The method according to claim 8, further comprising the step of:(g) forming a laminate of thin film layers including in sequence: seed, underlayer, magnetic recording, protective overcoat, and lubricant topcoat layers over said exposed first surface of said glass or glass-like layer including said positive image of said pattern of recesses.
- 11. The method according to claim 1, wherein:step (d) comprises urging said major surface of said substrate into contact with said second surface of said layer of material by application of pressure.
CROSS-REFERENCE TO PROVISIONAL APPLICATION
This application claims priority from U.S. provisional patent application Ser. No. 60/293,839 filed May 24, 2001, the entire disclosure of which is incorporated herein by reference.
US Referenced Citations (14)
Provisional Applications (1)
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Number |
Date |
Country |
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60/293839 |
May 2001 |
US |