Chemistry: electrical and wave energy – Processes and products – Coating – forming or etching by sputtering
Reexamination Certificate
2005-02-15
2005-02-15
Resan, Stevan A. (Department: 1773)
Chemistry: electrical and wave energy
Processes and products
Coating, forming or etching by sputtering
C204S192200, C204S192380, C427S131000, C427S249100, C427S249600, C427S249700, C427S249800, C427S249140, C427S580000, C427S523000, C427S577000, C427S590000
Reexamination Certificate
active
06855232
ABSTRACT:
A method for making a magnetic disk comprises forming first and second protective carbon layers on a magnetic layer. The first protective carbon layer is predominantly SP3 carbon. The second protective carbon layer comprises about 50% or less SP3 carbon. The second protective carbon layer is very thin, e.g. between 0.1 and 1.0 nm thick. A lubricant layer (e.g. a perfluoropolyether lubricant) is applied to the second protective carbon layer. The second protective carbon layer facilitates improved cooperation between lubricant and the disk.
REFERENCES:
patent: RE32464 (1987-07-01), Aine
patent: 5110676 (1992-05-01), Murai et al.
patent: 5232570 (1993-08-01), Haines et al.
patent: 5268216 (1993-12-01), Keem et al.
patent: 5476691 (1995-12-01), Komvopoulos et al.
patent: 5507930 (1996-04-01), Yamashita et al.
patent: 5540957 (1996-07-01), Ueda et al.
patent: 5587217 (1996-12-01), Chao et al.
patent: 5637393 (1997-06-01), Ueda et al.
patent: 5714044 (1998-02-01), Lal et al.
patent: 5805380 (1998-09-01), Ishihara et al.
patent: 5837357 (1998-11-01), Matsuo et al.
patent: 5855746 (1999-01-01), Prabhakara et al.
patent: 5858182 (1999-01-01), Horng et al.
patent: 6086730 (2000-07-01), Liu et al.
patent: 6165582 (2000-12-01), Hayashi
patent: 6197120 (2001-03-01), David
patent: 6238780 (2001-05-01), Wu et al.
patent: 6303214 (2001-10-01), Chour et al.
patent: 0 547 820 (1993-06-01), None
patent: 62-183022 (1987-08-01), None
patent: 1-320622 (1989-12-01), None
patent: 5-143972 (1993-06-01), None
patent: 8-212533 (1996-08-01), None
patent: 9-44844 (1997-02-01), None
patent: 9-288818 (1997-11-01), None
patent: 10-50235 (1998-02-01), None
patent: 10-172130 (1998-06-01), None
patent: 10-299012 (1998-08-01), None
patent: 11-39647 (1999-02-01), None
patent: WO9903099 (1999-01-01), None
Ian G. Brown, “Vacuum Arc Ion Sources”, Rev. Sci. Instrum. 65(10), Oct. 1994, pp. 3061-3081.
Anders, et al., “Mechanical Properties of Amorphous Hard Carbon Films Prepared by Cathodic Arc Deposition”, Mat. Res. Soc. Symp. Proc. vol. 383, 1995, pp. 453-458.
Sanders, et al., “Coating Technology Based on the Vacuum Arc—A Review”, IEEE Transactions on Plasma Science, vol. 18, No. 6, Dec. 1990, pp. 883-894.
J. Robertson, “Ultrathin Carbon Overcoats for Magnetic Storage Technology”, TRIB-vol. 9, Proceedings of the Symposium on Interface Technology Towards 100 Gbits/in.sup.2, ASME 1999, pp. 39-45.
Report Submitted I IDS mailed to USPTO on Jan. 21, 2002.
Weiler et al., “Deposition of Tetrahedral Hydrogenated Amorphous Carbon Using a Novel Electron Cyclotron Wave Resonance Reactor”, Applied Physics Letters, vol. 72, No. 11, Mar. 16, 1998, pp. 1314-1316.
Dae-Hwan Kang et al., “Evaluation of the Ion Bombardment Energy for Growing Diamondlike Carbon Films in an Electron Cyclotron Resonance Plasma Enhanced Chemical Vapor Deposition”, J. Vac. Sci. Technol. A 16(4) Jul./Aug. 1998, pp. 2625-2631.
Hashimoto Shigeto
Jairson Bruce
Liu Wen
Tsoi Ching Jackie
Yamashita Tsutomu Tom
Komag, Inc.
Resan Stevan A.
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