Coating processes – Direct application of electrical – magnetic – wave – or... – Pretreatment of substrate or post-treatment of coated substrate
Patent
1997-11-17
1999-10-12
Pianalto, Bernard
Coating processes
Direct application of electrical, magnetic, wave, or...
Pretreatment of substrate or post-treatment of coated substrate
427129, 427131, 427309, 427402, 427596, B05D 300
Patent
active
059652152
ABSTRACT:
The substrate of a magnetic recording medium is laser textured with uniformity and precision employing a fiber optic laser delivery system to form a laser textured landing zone and a laser textured decoupled data zone. A continuous wave laser light beam is split into first and second continuous wave laser light sub-beams. The first continuous laser light sub-beam is impinged on a rotating substrate surface through a microfocusing lens system to laser texture a data zone. The second continuous wave laser light sub-beam is converted into a pulsed laser light beam and passed through a microfocusing lens to impinge on the substrate surface to laser texture a data zone.
REFERENCES:
patent: 3674340 (1972-07-01), Jacob
patent: 3764218 (1973-10-01), Schedewie
patent: 3938878 (1976-02-01), Fox
patent: 4060306 (1977-11-01), Swaminathan
patent: 4139263 (1979-02-01), Lehureau et al.
patent: 5062021 (1991-10-01), Ranjan et al.
patent: 5120927 (1992-06-01), Williams et al.
patent: 5128914 (1992-07-01), Kurata et al.
patent: 5153785 (1992-10-01), Muranushi et al.
patent: 5166006 (1992-11-01), Lal et al.
patent: 5202810 (1993-04-01), Nakamura et al.
patent: 5273834 (1993-12-01), Hoover et al.
patent: 5391522 (1995-02-01), Goto et al.
patent: 5402407 (1995-03-01), Eguchi et al.
patent: 5416755 (1995-05-01), Endo et al.
patent: 5550696 (1996-08-01), Nguyen
patent: 5595791 (1997-01-01), Baumgart et al.
Baumgart 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.
Kuo et al., "Laser Zone Texturing on Glass and Glass-Ceramic Substrates," presented at the Magnetic Recording Conference (TMRC), Santa Clara, California, Aug. 19-21, 1996.
Baumgart et al. "Safe landings: Laser texturing of high-density magnetic disks" Data Storage, Mar. 1996.
Tam, "Laser-cleaning techniques for removal of surface particulates", J. Appl. Phys. 71 (7), Apr. 1, 1992, pp. 3515-3523.
Johnson et al., "In-Plane Anisotropy in Thin-Film Media: Physical Origins of Orientation Ratio (Invited)", IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995, pp. 2721-2727.
Miles et al., "Micromagnetic Simulation of Texture Induced Orientation in Thin Film Media", IEEE Transactions on Magnetics, vol. 31, No. 6, Nov. 1995, pp. 2770-2772.
Kissinger et al., "Fiber-Optic Probe Measures Runout of Stacked Disks", Jul.-Aug. 1997 Data Storage, pp. 79-84.
Pianalto Bernard
Seagate Technology Inc.
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