Victor Company of Japan, Limited

Masaru Hanayama

Yukio Matsumoto

Noboru Watanabe

Osamu Kobayashi

Ikuo Matsumoto

Takayuki Deno

Tsutomu Yashiro

Takumu Tada

Toshimitsu Saitou

A magnetic recording medium has a substrate and a magnetic layer formed on the substrate. The magnetic layer includes magnetic powder and a binder for binding the magnetic powder on the substrate. The binder includes at least a resin component containing at least an aminoquinone structure selected from an aminoquinone structure group shown with formulas (1-1a), (1-1b), (1-3a) and (1-3b) as a constitutional unit and at least a polar group selected from a group shown with a formula (1-2) in a composition of the resin component. Thus, the magnetic recording medium has excellent corrosion resistance of the magnetic powder and excellent conservation and running durability.

Magnetic recording medium and binder for use with magnetic coating in

A magnetic recording medium comprising a flexible support and a magnetic layer formed on the flexible support. The flexible support is made of a resin composition which comprises thermoplastic resins and particles of titanium monoxide or dititanium trioxide. The particles are dispersed in the thermoplastic resin in an amount of 0.03 to 10 wt % of the composition and have an average size below 2.5 .mu.m.

Magnetic recording media

Growing community of inventors

Ibaraki-ken, Japan

Masaru Hanayama