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US 8,785,009 B2Granted
Magnetic recording medium having space dots and recording dots alternatively formed in the recording track and method of making the same
AssigneeFujitsu Limited
InventorHiroto Takeshita
Life of this patent
Estimating the term…
Abstract
A magnetic recording medium includes a plurality of recording tracks magnetically continuous with respect to a recording direction and arranged intermittently in a track width direction, a plurality of recording dots intermittently formed in the recording tracks in the recording direction and a plurality of space dots alternately formed in the recording track with the recording dots in the recording direction and having a magnetic moment per unit area smaller than a magnetic moment per unit area of the recording dots.
Claims6
A magnetic recording medium, comprising:
- a plurality of recording tracks magnetically continuous with respect to a recording direction and arranged intermittently in a track width direction;
- a plurality of recording dots intermittently formed in the recording tracks in the recording direction;
- and
- a plurality of space dots alternately formed within the recording tracks with the recording dots in the recording direction, and
- where the plurality of space dots alternatively formed with the plurality of recording dots are directly contiguous with said recording dots, and a ratio of a magnetic moment per unit area of the plurality of space dots to a magnetic moment per unit area of the plurality of recording dots is between about 5-30%.
2 more elements
A method for the manufacture of a magnetic recording medium, comprising:
- forming a plurality of recording tracks magnetically continuous with respect to a recording direction and arranged intermittently in a track width direction;
- forming a plurality of recording dots intermittently formed in the recording tracks in the recording direction;
- and
- forming a plurality of space dots alternately filling space within the recording tracks with the recording dots in the recording direction, and
- where the plurality of space dots alternatively formed with the plurality of recording dots are directly contiguous with said recording dots, and a ratio of a magnetic moment per unit area of the plurality of space dots to a magnetic moment per unit area of the plurality of recording dots is between about 5-30%.
2 more elements
Dependencies are inferred from the claim text.