Laser texturing a glass or glass-ceramic substrate

Details Laser texturing a glass or glass-ceramic substrate Laser texturing a glass or glass-ceramic substrate

1997-09-25

1999-01-19

Pianalto, Bernard

Coating processes

Direct application of electrical, magnetic, wave, or...

Pretreatment of substrate or post-treatment of coated substrate

427129, 427314, B05D 300

Patent

active

058611967

ABSTRACT:
A magnetic recording medium is formed with a laser textured glass, ceramic or glass-ceramic substrate. The use of a pulsed, focused laser light beam, such as a CO.sub.2 derived laser light beam, through an acoustic-optical modulator enables the use of a high pulse repetition rate and/or short pulses. The resulting laser textured substrate comprises a plurality of dome-like protrusions extending above the substrate.

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Baumgart, P. et al., "A New Laser Texturing Technique for High Performance Magnetic Disk Drives", IEEE Transactions on Magnetics, vol. 31, No. 6, pp. 2946-2951, Nov. 1995.

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