Invention Grant
- Patent Title: Magnetic recording apparatus and magnetic recording medium
- Patent Title (中): 磁记录装置和磁记录介质
-
Application No.: US12379763Application Date: 2009-02-27
-
Publication No.: US07880997B2Publication Date: 2011-02-01
- Inventor: Akimasa Kaizu , Satoshi Tomikawa , Yoshikazu Soeno
- Applicant: Akimasa Kaizu , Satoshi Tomikawa , Yoshikazu Soeno
- Applicant Address: JP Tokyo
- Assignee: TDK Corporation
- Current Assignee: TDK Corporation
- Current Assignee Address: JP Tokyo
- Agency: Oliff & Berridge, PLC
- Priority: JP2008-068514 20080317
- Main IPC: G11B5/02
- IPC: G11B5/02

Abstract:
In the magnetic recording apparatus, a recording layer is formed in a concavo-convex pattern, and recording elements are formed of convex portions of the concavo-convex pattern. Furthermore, the following equation (I) BL≦ERL≦BL+2×GL (Equation (I)) is satisfied in each of tracks, where BL represents a length of the recording element in a circumferential direction, GL represents a length of a gap between the recording elements in the circumferential direction, and ERL represents an effective recording length which is a length of an effective recording area ER in the circumferential direction, the effective recording area ER being created on a magnetic recording medium by a heating head and a recording head.
Public/Granted literature
- US20090231746A1 Magnetic recording apparatus and magnetic recording medium Public/Granted day:2009-09-17
Information query
IPC分类: