Recording device
View Patent ↗Provided is a recording medium suitable for use in magnetic transfer of a servo pattern onto a magnetic recording medium. The recording medium includes a substrate including a plurality of servo regions and a plurality of data regions, and a magnetic layer formed on each of the servo regions and patterned in the shape of a servo pattern to be patterned on a magnetic recording medium, wherein the servo regions protrude relative to the data regions.
1. A master recording device comprising:
a magnetic substrate including a plurality of servo regions and a plurality of data regions;
a patterned magnetic layer formed on each of the servo regions and at least one magnetic layer pattern formed on each of the servo regions in the shape of at least one servo pattern to be formed on a magnetic recording device; and
a buffer layer formed underneath the magnetic layer to protrude each of the servo regions;
wherein:
the servo regions protrude relative to the data regions;
the servo pattern is spaced from a top surface of the data regions in an axial direction; and
the buffer layer is formed of a magnetic material.
2. The master recording device of claim 1 , wherein the buffer layer is formed of any one of resin, polymer and rubber.
3. The master recording device of claim 1 , wherein the data regions of the substrate are recessed relative to the servo region.
4. The master recording device of claim 1 , Wherein the magnetic layer is formed of any one material of CoFe, CoNiFe and NiFe.
5. The master recording device of claim 1 , wherein the magnetic layer is formed by nano imprinting.
6. The master recording device of claim 1 , wherein the shape of the servo pattern is embossed in the magnetic layer.
7. The master recording device of claim 1 , further comprising a polymer layer formed on each of the servo regions and having an engraved pattern corresponding to a shape of the servo pattern, wherein the magnetic layer fills the engraved pattern.
8. The master recording device of claim 1 , further comprising a polymer layer formed on each of the servo regions to take the shape of the servo pattern embossed on the polymer layer, wherein the magnetic layer is formed on a surface of the polymer layer.
9. A master recording device comprising:
a substrate including a plurality of servo regions and a plurality of data regions;
a patterned magnetic layer formed on each of the servo regions and at least one magnetic layer pattern formed on each of the servo regions in the shape of at least one servo pattern to be formed on a magnetic recording device; and
a buffer layer formed between a surface of the substrate and the magnetic layer adapted for each of the servo regions to protrude relative to the data regions, wherein the buffer layer comprises a magnetic material.
10. A master recording device comprising:
a substrate including a plurality of servo regions and a plurality of data regions;
a patterned magnetic layer formed on each of the servo regions and at least one magnetic layer pattern formed on each of the servo regions in the shape of at least one servo pattern to be formed on a magnetic recording device; and
a buffer layer formed between a surface of the substrate and the magnetic layer adapted for each of the servo regions to protrude relative to the data regions, wherein the buffer layer comprises a different material than the substrate.
11. The master recording device of claim 9 , wherein the buffer layer comprises the same material as the substrate.
12. The master recording device of claim 9 , wherein the buffer layer is formed of any one of resin, polymer and rubber.
13. The master recording device of claim 9 , wherein the servo pattern is spaced from a top surface of the data regions in an axial direction.
14. The master recording device of claim 9 , wherein the magnetic layer is formed of any one material of CoFe, CoNiFe and NiFe.
15. The master recording device of claim 9 , wherein the shape of the servo pattern is embossed in the magnetic layer.
16. The master recording device of claim 9 , further comprising a polymer layer formed on each of the servo regions and having an engraved pattern corresponding to a shape of the servo pattern, wherein the magnetic layer fills the engraved pattern.
17. The master recording device of claim 9 , further comprising a polymer layer formed on each of the servo regions to take the shape of the servo pattern embossed on the polymer layer, wherein the magnetic layer is formed on a surface of the polymer layer.
18. The master recording device of claim 9 , wherein the buffer layer is softer than a material used to form the magnetic layer.