Invention Grant
- Patent Title: Magnetic recording medium
- Patent Title (中): 磁记录介质
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Application No.: US11520621Application Date: 2006-09-14
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Publication No.: US07641991B2Publication Date: 2010-01-05
- Inventor: Yuichiro Murayama , Hiroshi Hashimoto
- Applicant: Yuichiro Murayama , Hiroshi Hashimoto
- Applicant Address: JP Tokyo
- Assignee: FUJIFILM Corporation
- Current Assignee: FUJIFILM Corporation
- Current Assignee Address: JP Tokyo
- Agency: Sughrue Mion, PLLC
- Priority: JP2005-271799 20050920
- Main IPC: G11B5/66
- IPC: G11B5/66

Abstract:
A magnetic recording medium is provided that comprises a non-magnetic support and at least one magnetic layer above the support, the magnetic layer comprising a ferromagnetic powder dispersed in a binder, and the binder comprising a polyurethane resin having a weight-average molecular weight of 200,000 to 400,000. There is also provided a magnetic recording medium that comprises a non-magnetic support, a non-magnetic layer above the support, the non-magnetic layer comprising a non-magnetic powder dispersed in a binder, and at least one magnetic layer above the non-magnetic layer, the magnetic layer comprising a ferromagnetic powder dispersed in a binder and the binder of the magnetic layer and/or the non-magnetic layer comprising a polyurethane resin having a weight-average molecular weight of 200,000 to 400,000.
Public/Granted literature
- US20070065684A1 Magnetic recording medium Public/Granted day:2007-03-22
Information query
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