Invention Grant
- Patent Title: Magnetic recording medium with recording layer having a predetermined concavo-convex pattern and magnetic recording and reproducing apparatus
- Patent Title (中): 具有记录层的具有预定凹凸图案的磁记录介质和磁记录和重放装置
-
Application No.: US11222761Application Date: 2005-09-12
-
Publication No.: US07682713B2Publication Date: 2010-03-23
- Inventor: Takahiro Suwa , Kazuhiro Hattori , Shuichi Okawa
- Applicant: Takahiro Suwa , Kazuhiro Hattori , Shuichi Okawa
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2005-025645 20050201
- Main IPC: G11B7/24
- IPC: G11B7/24 ; G11B5/82 ; G11B3/68 ; G11B3/70

Abstract:
The magnetic recording medium includes: recording elements formed as the convex portions of the recording layer formed in the predetermined concavo-convex pattern over a substrate; and a filling elements with which a concave portions between the recording elements are filled. A surface concave portion is formed in a surface of the magnetic recording medium above the recording element. The surface concave portion has a cross-sectional shape of which a portion corresponding to a center of the recording element lying thereunder in a width direction thereof is recessed deepest toward the substrate, and has a width monotonically increasing with increase of a distance from the substrate.
Public/Granted literature
- US20060172154A1 Magnetic recording medium and magnetic recording and reproducing apparatus Public/Granted day:2006-08-03
Information query
IPC分类: