Dielectric recording medium, and method of and apparatus for producing the same
AssigneesPioneer Corporation, Yasuo Cho
InventorsAtsushi Onoe, Yasuo Cho
Life of this patent
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Abstract
A dielectric recording medium is provided with three layers of: a dielectric material, an electric conductor, and a substrate, and has a groove on the recording surface of the dielectric material. The groove is provided with one or a plurality of grooves. When a voltage is applied to a probe, the dielectric material just under the probe is polarized depending on an electric field generated between the electric conductor and the probe, which allows recording. Moreover, the groove facilitates the probe tracking since the probe scans along this groove.
Claims16
A dielectric recording medium for recording information by aligning polarization directions with a probe such that the polarization directions correspond to the information, comprising:
- a substrate;
- an electric conductor disposed on said substrate;
- a ferroelectric material disposed on said electric conductor for recording the information with the probe;
- and
- a groove on a recording surface of said ferroelectric material for tracking with the probe,
- wherein the polarization directions of the ferroelectric material at least under the groove are in a vertical direction to the recording surface.
A method of producing a dielectric recording medium for recording information by aligning polarization directions with a probe such that the polarization directions correspond to the information, comprising:
- an application process of applying a liquid material which contains a solvent and a dielectric precursor dissolved in the solvent onto a substrate on one surface of which an electric conductor is provided;
- a solvent evaporation process of evaporating the solvent after said application process;
- a forming process of putting a tip portion of the probe into the dielectric precursor laminated on the substrate after said solvent evaporation process;
- a voltage application process of applying a voltage between the probe and the electric conductor with the dielectric precursor sandwiched between them after said forming process;
- and
- a moving process of moving the probe under such a condition that the voltage is applied,
- wherein, in the forming process, the tip portion of the probe is put into the dielectric precursor such that the tip portion of the probe subsides into the dielectric precursor, and
- in the moving process, a groove is formed on the dielectric precursor by moving the probe.
An apparatus for producing a dielectric recording medium for recording information by aligning polarization directions with a probe such that the polarization directions correspond to the information, comprising:
- an application device for applying a liquid material which contains a solvent and a dielectric precursor dissolved in the solvent onto a substrate on one surface of which an electric conductor is provided;
- a solvent evaporation device for evaporating the solvent;
- a forming device for putting a tip portion of the probe into the dielectric precursor laminated on the substrate;
- a voltage application device for applying a voltage between the probe and the electric conductor with the dielectric precursor sandwiched between them;
- and
- a moving device for moving the probe under such a condition that the voltage is applied by said voltage application device,
- wherein, the forming device puts the tip portion of the probe into the dielectric precursor such that the tip portion of the probe subsides into the dielectric precursor, and
- the moving device forms a groove on the dielectric precursor by moving the probe.
Dependencies are inferred from the claim text.