Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media
Reexamination Certificate
2007-04-03
2007-04-03
Rickman, Holly (Department: 1773)
Stock material or miscellaneous articles
Magnetic recording component or stock
Thin film media
Reexamination Certificate
active
10271172
ABSTRACT:
A magnetic recording medium having high C/N ratio characteristics particularly in a short wavelength range and capable of attaining a further higher-density recording as a magnetic recording tape produced by forming a magnetic layer by a vapor deposition method and other magnetic recording media of the next generation and a method of producing the same, wherein a magnetic layer is formed by a vapor deposition method on a nonmagnetic supporting body made of a polymer substrate, which has a configuration of comprising a nonmagnetic supporting body, an under layer formed on the nonmagnetic supporting body, containing Co and O and having an atomic ratio of O/Co of 0.4 or more and a magnetic layer containing Co and O, wherein the film thickness of the under layer is made 50 nm or less and the maximum incident angle is made 70° or less in the vapor deposition method.
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Wako Hitoshi
Yoshida Shin-ya
Rickman Holly
Sonnenschein Nath & Rosenthal LLP
Sony Corporation
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