Invention Application
- Patent Title: Magnetic recording medium with dual layer front coating and method of manufacture
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Application No.: US10263378Application Date: 2002-10-01
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Publication No.: US20040072030A1Publication Date: 2004-04-15
- Inventor: David C. Lowery , Ryosuke Isobe
- Applicant: Imation Corp. , Quantegy, Inc.
- Applicant Address: null null
- Assignee: Imation Corp.,Quantegy, Inc.
- Current Assignee: Imation Corp.,Quantegy, Inc.
- Current Assignee Address: null null
- Main IPC: G11B005/66
- IPC: G11B005/66

Abstract:
A magnetic recording medium including a non-magnetic substrate, a back coat, a lower layer, and a magnetic upper layer. The substrate defines a front side and back side, with the back coat being formed on the back side. The lower layer is disposed over the front side of the substrate and includes a primary powder material and conductive carbon black material dispersed in a binder. The primary lower layer powder material comprises particles having a coercivity of less than 300 Oe coated with an electroconductive material. The magnetic upper layer is disposed over the lower layer and includes a magnetic powder dispersed in a binder.
Public/Granted literature
- US06818298B2 Magnetic recording medium with dual layer front coating and method of manufacture Public/Granted day:2004-11-16
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