Method of manufacturing recording medium
AssigneeKabushiki Kaisha Toshiba
InventorsHiroyuki Hieda, Masatoshi Sakurai, Koji Asakawa, Toshiro Hiraoka, Katsuyuki Naito
Life of this patent
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Abstract
A recording medium includes a substrate, and a recording layer formed on the substrate having (a) a recording track band, and (b) recording cells regularly arrayed in the recording track band to form a plurality rows of sub-tracks. The recording cells included in each sub-track are formed apart from each other at a pitch P in the track direction. Nearest neighboring two recording cells, each positioned on adjacent two sub-tracks in the track band, are formed apart from each other at a pitch P/n in the track direction, where 2≦n≦5.
Claims11
A method of manufacturing a recording medium, comprising:
- forming on a disk substrate a continuous or intermittent groove region or a band region containing a specified chemical component concentrically or spirally, which corresponds to a recording track band, the groove region or the band region being defined by isolation regions formed concentrically or spirally;
- forming a two-dimensional regular array structure of self-ordering molecules or fine particles in the groove region or the band region;
- and
- forming recording cells corresponding to the regular array structure including
- forming a recording layer on the disk substrate,
- forming a first film on the recording layer,
- patterning the first film to form a concentric or spiral pattern corresponding to the isolation regions and a concentric or spiral groove region corresponding to the recording track band,
- forming a two-dimensional regular array structure of self-ordering molecules or fine particles in the groove region,
- etching the recording layer using the concentric or spiral pattern of the first film and the self-ordering molecules or fine particles as a mask to form the isolation regions made of the recording layer and the recording cells;
- and
- forming a non-recording material between the recording cells.
Dependencies are inferred from the claim text.