Title:
磁気記録媒体、磁気記録再生装置及び磁気記録媒体の製造方法
Document Type and Number:
Japanese Patent JP4164110
Kind Code:
B2
Abstract:
The magnetic recording medium includes a substrate and a recording layer formed in a predetermined concavo-convex pattern over the substrate, and the recording layer includes recording elements each formed as a convex portion of the recording layer. Surface steps are formed in an inner area including a radially innermost portion of a recording area. Each surface step is formed in such a manner that a portion over a concave portion between the recording elements is recessed toward a substrate to a level below a portion over the recording element. The surface steps are formed such that the recording area can be sectioned into an annular area adjoining the inner area and the inner area where height of the surface steps is larger than that in the annular area.
More Like This:
Inventors:
Takahiro Suwa
Kazuya Shimakawa
Kazuya Shimakawa
Application Number:
JP2006348243A
Publication Date:
October 08, 2008
Filing Date:
December 25, 2006
Export Citation:
Assignee:
tdk Corporation
International Classes:
G11B5/65; G11B5/82; G11B5/855
Domestic Patent References:
| JP2005243130A | ||||
| JP11110748A | ||||
| JP2000293840A |
Foreign References:
| WO2005064598A1 |
Attorney, Agent or Firm:
Keisuke Matsuyama
Satoshi Takaya
Tsuyoshi Makino
Yoshiyuki Shimada
Satoshi Takaya
Tsuyoshi Makino
Yoshiyuki Shimada