Magnetic transfer master and method of formatting magnetic recording medium
A master is used for writing information to a magnetic recording disk by a magnetic transfer method. The recording disk includes a magnetic recording layer possessing vertical magnetic anisotropy. The master includes a servo zone corresponding part formed with a magnetic material pattern for recording servo information to the recording layer of the recording disk. The master also includes a user data zone corresponding part formed with a second magnetic material pattern for providing the recording layer of the recording disk with a dummy signal.
1. A master for writing information to formatting a magnetic recording medium by a magnetic transfer method, the recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the master comprising:
a servo zone corresponding part formed with a first magnetic material pattern for recording servo information to the magnetic recording layer; and
a user data zone corresponding part formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a circumferential direction of the magnetic disk, the plurality of line elements being disposed side by side in a direction that corresponds to a radial direction of the magnetic disk.
2. A master for writing information to format a magnetic recording medium by a magnetic transfer method, the recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the master comprising:
a servo zone corresponding part formed with a first magnetic material pattern for recording servo information to the magnetic recording layer; and
a user data zone corresponding part formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a radial direction of the magnetic disk, the plurality of line elements being disposed side by side a direction that corresponds to a circumferential direction of the magnetic disk.
3. A master for formatting a magnetic recording medium by a magnetic transfer method, the recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the master comprising:
a plurality of servo zone corresponding parts each formed with a first magnetic material pattern for recording servo information to the magnetic recording layer; and
a plurality of user data zone corresponding parts each directly adjoining two of the servo zone corresponding parts, each of the user data zone corresponding parts being formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a circumferential direction of the magnetic disk, the plurality of line elements being disposed side by side in a direction that corresponds to a radial direction of the magnetic disk.
4. A master for formatting a magnetic recording medium by a magnetic transfer method, the recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the master comprising:
a plurality of servo zone corresponding parts each formed with a first magnetic material pattern for recording servo information to the magnetic recording layer; and
a plurality of user data zone corresponding parts each directly adjoining two of the servo zone corresponding parts, each of the user data zone corresponding parts being formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a radial direction of the magnetic disk, the plurality of line elements being disposed side by side in a direction that corresponds to a circumferential direction of the magnetic disk.
5. A method for formatting a magnetic recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the method comprising:
an initial magnetization step for initially magnetizing the magnetic recording layer in a first direction by applying a magnetic field to the magnetic recording medium in the first direction;
an overlapping step for overlapping a master with the magnetic recording medium, the master comprising a servo zone corresponding part and a user data zone corresponding part directly adjoining the servo zone corresponding part, the servo zone corresponding part being formed with a first magnetic material pattern for recording servo information in the magnetic recording layer, the user data zone corresponding part being formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal, the overlapping being performed so that the first magnetic material pattern of each servo zone corresponding part and the second magnetic material, pattern of the user data zone corresponding part come into facing relation to a first region and a second region of the magnetic recording layer, respectively; and
a magnetic transfer step for recording servo information in the first region of the magnetic recording layer and providing the second region of the magnetic recording layer with a dummy signal by applying a transfer magnetic field to the master and the magnetic recording medium in a second direction opposite to the first direction;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a circumferential direction of the magnetic disk, the plurality of line elements being disposed side by side in a direction that corresponds to a radial direction of the magnetic disk.
6. A method for formatting a magnetic recording medium including a magnetic recording layer that possesses vertical magnetic anisotropy, the method comprising:
an initial magnetization step for initially magnetizing the magnetic recording layer in a first direction by applying a magnetic field to the magnetic recording medium in the first direction;
an overlapping step for overlapping a master with the magnetic recording medium, the master comprising a servo zone corresponding part and a user data zone corresponding part, the servo zone corresponding part being formed with a first magnetic material pattern for recording servo information in the magnetic recording layer, the user data zone corresponding part being formed with a second magnetic material pattern for providing the magnetic recording layer with a dummy signal, the overlapping being performed so that the first magnetic material pattern and the second magnetic material pattern come into facing relation to a first region and a second region of the magnetic recording layer, respectively; and
a magnetic transfer step for recording servo information in the first region of the magnetic recording layer and providing the second region of the magnetic recording layer with a dummy signal by applying a transfer magnetic field to the master and the magnetic recording medium in a second direction opposite to the first direction;
wherein the magnetic recording medium is a magnetic disk and the second magnetic material pattern includes a plurality of line elements each of which extends in a direction that corresponds to a radial direction of the magnetic disk, the plurality of line elements being disposed side by side a direction that corresponds to a circumferential direction of the magnetic disk.