Magnetic recording medium

Details Magnetic recording medium Magnetic recording medium

1998-03-03

2000-09-05

Thibodeau, Paul

Stock material or miscellaneous articles

Composite

Of inorganic material

428694BU, 428694BL, G11B 566, G11B 570

Patent

active

061140570

ABSTRACT:
The present invention provides a magnetic recording medium aimed at improving performance of magnetic recording medium such as videotapes, audiotapes, computer tapes, etc., including electromagnetic transducing characteristic and durability. The magnetic recording medium is coated with a magnetic coating as a dispersion of magnetic micropowder and binders in a solvent over a non-magnetic support. Polyester polyurethane resins having a certain alicyclic skeleton and containing tertiary amines or quaternary ammonium salts are used as the binders.

REFERENCES:
patent: 4788103 (1988-11-01), Okita et al.
patent: 5089344 (1992-02-01), Tamazaki et al.
patent: 5124424 (1992-06-01), Endo et al.
patent: 5536567 (1996-07-01), Kato et al.
patent: 5556698 (1996-09-01), Amirsakis et al.
patent: 5702821 (1997-12-01), Murayama et al.
patent: 5908691 (1999-06-01), Murayama et al.

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