Servo writer and cartridge
AssigneeSony Group Corporation
InventorHiroshi Morita
Life of this patent
Estimating the term…
Abstract
A servo writer includes a running unit that sends a tape-like magnetic recording medium out from a cartridge, winds up the sent out magnetic recording medium, and runs the magnetic recording medium; an erasing unit that erases a first servo pattern formed in the magnetic recording medium that runs; a head that writes a servo signal in the running magnetic recording medium from which the first servo pattern is erased and forms a second servo pattern; and a control unit that controls the head so that the servo signal is written in at least one period of an accelerated running period and a decelerated running period of the magnetic recording medium, and forms the second servo pattern that does not satisfy a standard in the magnetic recording medium.
Claims9
A servo writer, comprising:
- a running unit that sends a magnetic recording medium, in a tape form, out from a cartridge, winds up the sent out magnetic recording medium, and runs the magnetic recording medium;
- an erasing unit that erases a first servo pattern formed in the magnetic recording medium that runs;
- a head that writes a servo signal in the running magnetic recording medium from which the first servo pattern is erased and forms a second servo pattern;
- and
- a control unit that controls the head so that the servo signal is written in at least one period of an accelerated running period and a decelerated running period of the magnetic recording medium, and forms the second servo pattern that does not satisfy a standard in the magnetic recording medium,
- wherein the magnetic recording medium includes:
- a ratio RS=(((a servo bandwidth WSB)×(a number of servo bands))/(a width of the magnetic recording medium))×100,
- wherein the ratio RS is 4% or less,
- wherein the servo bandwidth WSB is 99 μm or less, and
- wherein the number of servo bands is 5 or more.
A servo writer, comprising:
- a running unit that sends a magnetic recording medium, in a tape form, out from a cartridge, winds up the sent out magnetic recording medium, and runs the magnetic recording medium;
- an erasing unit that erases a first servo pattern formed in the magnetic recording medium that runs;
- a head that writes a servo signal in the running magnetic recording medium from which the first servo pattern is erased and forms a second servo pattern;
- and
- a control unit that controls the head so that the servo signal is not written in at least one period of an accelerated running period and a decelerated running period of the magnetic recording medium,
- wherein the magnetic recording medium includes:
- a ratio RS=(((a servo bandwidth WSB)×(a number of servo bands))/(a width of the magnetic recording medium))×100,
- wherein the ratio RS is 4% or less,
- wherein the servo bandwidth WSB is 99 μm or less, and
- wherein the number of servo bands is 5 or more.
A cartridge, comprising:
- a magnetic recording medium in a wound tape form;
- and
- a case in which the magnetic recording medium is accommodated,
- wherein the magnetic recording medium has an unused area, and
- wherein, in the unused area, a servo pattern that does not satisfy a standard is formed or a servo pattern is not formed,
- wherein the magnetic recording medium includes:
- a ratio RS=(((a servo bandwidth WSB)×(a number of servo bands))/(a width of the magnetic recording medium))×100,
- wherein the ratio RS is 4% or less,
- wherein the servo bandwidth WSB is 99 μm or less, and
- wherein the number of servo bands is 5 or more.
Dependencies are inferred from the claim text.