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US 4,379,803 AGranted
Magnetic recording medium
AssigneeTDK Electronics Co., Ltd.
InventorsKiminori Tamai, Masashi Hayama
Life of this patent
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Abstract
A magnetic recording medium having a substrate coated with a magnetic layer comprises a binder, a magnetic powder and a metal phosphide at a ratio of 0.2 to 5.0 wt. % based on said magnetic powder.
Claims6
A magnetic recording medium, comprising:
- a substrate coated with a magnetic layer, said magnetic layer comprising a synthetic binder, a magnetic powder and at least one Group VIII metal phosphide with the amount of said metal phosphide in said magnetic layer ranging from 0.2 to 5.0 wt. % based on said magnetic powder.
Dependencies are inferred from the claim text.