Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

2006-06-06

2006-06-06

Resan, Stevan A. (Department: 1773)

Stock material or miscellaneous articles

Magnetic recording component or stock

Binder media

C428S840300, C428S840500, C360S134000, C369S289100

Reexamination Certificate

active

07056607

ABSTRACT:
Provided is a magnetic recording medium permitting the controlling of backcoat layer transfer to a magnetic layer surface, a reduction in dropout even when employing microgranular magnetic material, as well as good running stability, durability, and storage properties. The magnetic recording medium has a magnetic layer with a ferromagnetic powder and a binder on one surface of a nonmagnetic support and a backcoat layer with a nonmagnetic powder and a binder on the other surface of the nonmagnetic support. The nonmagnetic powder is an acicular particle having a mean particle diameter of 5 to 300 nm, and the backcoat layer includes water-soluble cations in a quantity of 100 ppm or less and water-soluble anions in a quantity of 150 ppm or less.

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patent: 2003/0118869 (2003-06-01), Ozawa et al.
patent: 2004/0072030 (2004-04-01), Lowery et al.
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patent: 2004/0110037 (2004-06-01), Kuse et al.
Translation of JA 11-259851.
Translation of JA 10-064041.
Translation of JA 2001-101647.

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