Servo recording apparatus, servo write head, method of producing a magnetic tape, and magnetic tape
AssigneeSony Group Corporation
InventorHiroshi Morita
Life of this patent
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Abstract
A servo recording apparatus according to the present technology includes: a servo write head. The servo write head writes a first servo pattern and a second servo pattern to a plurality of servo bands of a magnetic tape, the first servo pattern and the second servo pattern being asymmetric with respect to a width direction of the magnetic tape, the magnetic tape being used in a data recording apparatus that includes a data write head disposed such that a longitudinal direction of the data write head is inclined with respect to the width direction of the magnetic tape by a first head azimuth angle.
Claims26
A servo recording apparatus, comprising:
- a servo write head that writes a first servo pattern and a second servo pattern to a plurality of servo bands of a magnetic tape, the first servo pattern and the second servo pattern being asymmetric with respect to a width direction of the magnetic tape, the magnetic tape being used in a data recording apparatus that includes a data write head disposed such that a longitudinal direction of the data write head is inclined with respect to the width direction of the magnetic tape by a first head azimuth angle,
- wherein the servo write bead includes a plurality of pairs of servo elements corresponding to the plurality of servo bands, each of the pairs of servo elements including a first servo element that writes the first servo pattern and a second servo element that writes the second servo pattern.
A servo write head that writes a first servo pattern and a second servo pattern to a plurality of servo bands of a magnetic tape, the first servo pattern and the second servo pattern being asymmetric with respect to a width direction of the magnetic tape, the magnetic tape being used in a data recording apparatus that includes a data write head disposed such that a longitudinal direction of the data write head is inclined with respect to the width direction of the magnetic tape by a first head azimuth angle, wherein the servo write head includes a plurality of pairs of servo elements corresponding to the plurality of servo bands, each of the pairs of servo elements including a first servo element that writes the first servo pattern and a second servo element that writes the second servo pattern.
A method of producing a magnetic tape, comprising:
- writing, by a servo write head of a servo recording apparatus, a first servo pattern and a second servo pattern to a plurality of servo bands of a magnetic tape, the first servo pattern and the second servo pattern being asymmetric with respect to a width direction of the magnetic tape, the magnetic tape being used in a data recording apparatus that includes a data write head disposed such that a longitudinal direction of the data write head is inclined with respect to the width direction of the magnetic tape by a first head azimuth angle, wherein the servo write head includes a plurality of pairs of servo elements corresponding to the plurality of servo bands, each of the pairs of servo elements including a first servo element that writes the first servo pattern and a second servo element that writes the second servo pattern.
A magnetic tape, comprising:
- a base;
- a non-magnetic layer that is stacked on the base;
- and
- a magnetic layer that is stacked on the non-magnetic layer,
- the magnetic tape having a plurality of servo bands to which servo patterns have been written, the servo patterns including a first servo pattern and a second servo pattern that are asymmetric with respect to a width direction of the magnetic tape,
- the servo patterns in servo bands adjacent to each other having a phase difference,
- wherein the first servo pattern is inclined with respect to the width direction of the magnetic tape at a first angle,
- wherein the second servo pattern is inclined opposite to the first angle at a second angle that is different from the first angle with respect to the width direction of the magnetic tape,
- wherein the first head azimuth angle is adjusted within a predetermined range with reference to a reference angle,
- wherein the phase difference is related to the reference angle, and
- wherein the phase difference is represented by SP×tan(Refθ), the Refθ being the reference angle, the SP being a pitch between the servo bands adjacent to each other in the width direction of the magnetic tape.
A magnetic tape, comprising:
- a base;
- a non-magnetic layer that is stacked on the base;
- and
- a magnetic layer that is stacked on the non-magnetic layer,
- the magnetic tape having a plurality of servo bands to which servo patterns have been written, the servo patterns including a first servo pattern and a second servo pattern that are asymmetric with respect to a width direction of the magnetic tape,
- the servo patterns in servo bands adjacent to each other having a phase difference,
- wherein the first servo pattern is inclined with respect to the width direction of the magnetic tape at a first angle,
- wherein the second servo pattern is inclined opposite to the first angle at a second angle that is different from the first angle with respect to the width direction of the magnetic tape,
- wherein the magnetic tape is used in a data recording apparatus that includes a data write head disposed such that a longitudinal direction of the data write head is inclined with respect to the width direction of the magnetic tape by a first head azimuth angle,
- wherein the first head azimuth angle is adjusted within a predetermined range with reference to a reference angle,
- wherein the first angle and the second angle are related to the reference angle, and wherein the first angle has a value obtained by adding a servo azimuth angle to the reference angle.
Dependencies are inferred from the claim text.