Master carrier for magnetic transfer
View Patent ↗The master carrier for magnetic transfer of the invention comprises a support and a magnetic layer formed on the surface of the support, wherein an uneven transfer pattern that corresponds to the information to be transferred to a magnetic recording medium is formed in the surface of the magnetic layer, and a relief is formed in the site where the transfer pattern is not formed.
1. A master carrier for magnetic transfer, comprising: a support having an uneven transfer pattern on a surface of said support, said uneven transfer pattern corresponding to information to be transferred to a magnetic recording medium; and a magnetic layer on said surface of said support,
wherein said master carrier has a relief in a site where said uneven transfer pattern is not provided in a perpendicular direction of said master carrier at opposite sides of said surface having said uneven transfer pattern, said relief having a thickness less than said master carrier; and
a thickness of said master carrier in said relief gradually decreases with extending to outside in a radial direction.
2. The master carrier for magnetic transfer as claimed in claim 1 , wherein said relief extends from inside to outside in a radial direction of said master carrier.
3. The master carrier for magnetic transfer as claimed in claim 1 , wherein said relief spreads with extending to outside in a radial direction.
4. A master carrier for magnetic transfer, comprising: a support having an uneven transfer pattern on a surface of said support, said uneven transfer pattern corresponding to information to be transferred to a magnetic recording medium; and a magnetic layer on said surface of said support,
wherein said master carrier has a relief in a site where said uneven transfer pattern is not provided in a perpendicular direction of said master carrier at opposite sides of said surface having said uneven transfer pattern, said relief having a thickness less than said master carrier; and
a thickness of said master carrier in said relief gradually increases with extending to outside in a radial direction.
5. The master carrier for magnetic transfer as claimed in claim 4 , wherein said relief extends from inside to outside in a radial direction of said master carrier.
6. The master carrier for magnetic transfer as claimed in claim 4 , wherein said relief spreads with extending to outside in a radial direction.