Tdk Corporation

Hiroshi Ohta

Kiyoto Fukushima

Shinji Abe

Kinji Sasaki

A magnetic recording medium having a magnetic layer comprising ferromagnetic powder particles dispersed in a binder, wherein the ferromagnetic powder particles satisfy the condition represented by T&lt;600.times.10.sup.3 nm.sup.3 where T is an average value of volume T.sub.1 of each particle, where T.sub.1 is represented by T.sub.1 =L(nm).times.W(nm).times.W(nm) where L is the length of each particle and W is the width thereof, and the skewness in the distribution of the length L is at most 0.4.

Magnetic recording medium and process for its production

A magnetic recording medium having deposited on the surface of a non-magnetic substrate a magnetic layer formed by dispersing a powdered magnetic substance and a powdered abrasive in a binder, which magnetic recording medium is characterized by having abrasive particles activated on the surface thereof.

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Komoro, Japan

Hiroshi Ohta