Stock material or miscellaneous articles – Web or sheet containing structurally defined element or... – Physical dimension specified
Reexamination Certificate
2005-02-15
2005-02-15
Nakarani, D. S. (Department: 1773)
Stock material or miscellaneous articles
Web or sheet containing structurally defined element or...
Physical dimension specified
C428S692100, C428S690000, C428S690000
Reexamination Certificate
active
06855416
ABSTRACT:
A thin film magnetic recording medium (30) is composed of an underlayer film (32), which is constituted by a nonmagnetic metal oxide film and formed on a nonmagnetic substrate (31), and a magnetic film (33) of Co system, which is formed on the underlayer film (32) through an oblique evaporation process, wherein each of the underlayer film and the magnetic film is laminated in order. Fine particles of the nonmagnetic metal oxide film grow isotropically in the underlayer film (32) constituted by the nonmagnetic metal oxide film and the underlayer film (32) is formed in a construction without having a clear grain boundary, which separates a aggregation of the fine particles.
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Transactions of the Magnetics Society of Japan, vol. 21, No. 4-2, pp. 229-232, published in 1997 Title: “Effect of a CoO Underlayer on Co-O Films Deposited Obliquely” by K. Tohma, et al of Matushita Electric Industrial Co., Ltd.
IEEE Transactions on Magnetics, vol. 36, No. 1, pp. 183-188, published in 2000 Title: “More than 1 Gb/in2 Recording on Obliquely Oriented Thin Film Tape” by Tatsuaki Ishida, et al of Matsushita Electric Industrial Co., Ltd.
IEEE Transactions on Magnetics vol. 35, No. 5, pp. 2688-2690, published in 1999 Title: “Characteristics of Me Tape Made at 1 u m/s Depostion Rate” by Y. Maezawa, et al of Matsushita Electric Industrial Co., Ltd.
Segawa Masaru
Sugiyama Masahiko
Anderson Kill & Olick
Lieberstein Eugene
Meller Michael N.
Nakarani D. S.
Victor Company of Japan Ltd.
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