Coating processes – Magnetic base or coating
Reexamination Certificate
2007-01-23
2007-01-23
Bashore, Alain L. (Department: 1762)
Coating processes
Magnetic base or coating
C427S129000, C427S130000, C427S131000, C118S715000
Reexamination Certificate
active
10791712
ABSTRACT:
A production method and a production apparatus for a magnetic recording medium, which enable the efficient production of a discrete type magnetic recording medium, while reliably preventing any deterioration of the partitioned recording elements. The magnetic recording medium production apparatus includes: recording layer processing device, which by forming a plurality of grooves, with a spacing therebetween in a planar direction, in an intermediate product of a magnetic recording medium comprising a continuous recording layer, partitions the continuous recording layer into a plurality of partitioned recording elements; non-magnetic body filling device for filling the grooves between the partitioned recording elements with a non-magnetic body; smoothing device for smoothing the surface of the partitioned recording elements and the non-magnetic body; protective layer formation device for forming a protective layer on the partitioned recording elements and the non-magnetic body; and vacuum retention device which houses the recording layer processing device, the non-magnetic body filling device, the smoothing device, and the protective layer formation device, and maintains the environment surrounding the intermediate product in a state of vacuum.
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Hattori Kazuhiro
Suwa Takahiro
Takai Mitsuru
Bashore Alain L.
Oliff & Berridg,e PLC
TDK Corporation
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