Invention Grant
US07732005B2 Method for producing recording medium, recording medium employing said method, and information recording and reproducing apparatus
失效
用于制造记录介质的方法，采用所述方法的记录介质以及信息记录和再现装置
- Patent Title: Method for producing recording medium, recording medium employing said method, and information recording and reproducing apparatus
- Patent Title (中): 用于制造记录介质的方法，采用所述方法的记录介质以及信息记录和再现装置
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Application No.: US11134399Application Date: 2005-05-23
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Publication No.: US07732005B2Publication Date: 2010-06-08
- Inventor: Yuko Tsuchiya , Susumu Soeya , Hiromasa Takahashi
- Applicant: Yuko Tsuchiya , Susumu Soeya , Hiromasa Takahashi
- Applicant Address: JP Tokyo
- Assignee: Hitachi, Ltd.
- Current Assignee: Hitachi, Ltd.
- Current Assignee Address: JP Tokyo
- Agency: Stites & Harbison PLLC
- Agent Juan Carlos A. Marquez, Esq.
- Priority: JP2004-155005 20040525
- Main IPC: B28B3/00
- IPC: B28B3/00 ; B05D5/10 ; G11B5/71 ; C03C15/00
Abstract:
A method for producing a recording medium provides good throughput for mass production and reduces cost. The method facilitates the control of the shape or dimensions of a pattern obtained by microfabrication, allows an accurate pattern transfer, and provides superior uniformity. A magnetic layer is formed on a substrate. A nano-particle film 16 is formed on a desired portion on the magnetic layer. Using the nano-particle film as a mask, the magnetic layer is cut. A micropattern with concavities and convexities is formed on the magnetic layer by removing the nano-particle film.
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