Mechanical texturing of sol-gel—coated substrates for...

Details Mechanical texturing of sol-gel—coated substrates for... Mechanical texturing of sol-gel—coated substrates for...

2005-03-15

2005-03-15

Resan, Stevan A. (Department: 1773)

Coating processes

Magnetic base or coating

Magnetic coating

C427S131000, C427S240000, C427S264000, C427S266000, C427S269000, C427S271000, C427S283000, C427S287000, C427S330000, C427S355000, C427S376200, C427S387000, C427S397700

Reexamination Certificate

active

06866883

ABSTRACT:
A method of manufacturing a magnetic recording medium comprises steps of providing a non-magnetic substrate having at least one surface; forming a layer of a sol-gel on the surface, partially drying the sol-gel layer at room temperature to remove a portion of the solvent therein to form a partially dried sol-gel layer of hardness less than that of the substrate; mechanically texturing the surface of the partially dried sol-gel layer; and depositing a layer stack including at least one magnetic layer thereover. Embodiments of the invention include embossing a servo pattern in the as-deposited sol-gel layer prior to partial drying and mechanically texturing, followed by sintering at an elevated temperature to form a substantially fully dried layer having a density and hardness similar to that of glass, and formation of a thin film magnetic media layer stack thereon.

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