Magnetic recording medium and method of manufacturing a...

Stock material or miscellaneous articles – Magnetic recording component or stock – Thin film media

Reexamination Certificate

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C428S847100, C428S847400, C428S847700, C427S131000

Reexamination Certificate

active

10488983

ABSTRACT:
It is a magnetic recording medium for which favorable values for all of reproduced output, noise level and error rate can be obtained, and which is also superior in terms of storage stability. A magnetic recording medium (10), which has a configuration in which a magnetic layer (3) comprised of a maghemite thin film containing cobalt is formed on a tape-shaped substrate (1) comprised of aromatic polyimide, and in which the substrate (1) is 3 to 10 μm in thickness, and 5 to 30 nm in its ten-point average roughness (SRz) of the surface on which the magnetic layer (3) is formed, and the magnetic layer (3) is 10 to 50 nm in thickness, 0.1 to 3.0 nm in center plane average thickness (SRa), and 2,000 to 4,000 Oe (158,000 to 316,000 A/m) in in-plane coercivity, is made.

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Translation JPO 2002-183933.
Translation JPO 2001-307319.
Translation JPO 11-120535.
Translation JPO 2001-283425.

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