Magnetic recording medium
AssigneeTDK Electronics Co., Ltd.
InventorsAkihiko Hosaka, Kiyotaka Okuyama, Yukihiro Isobe
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Abstract
A magnetic recording tape or disc which has excellent total characteristics of an adhesive strength, a repeat running durability, an electromagnetic characteristic, a gloss degree of the surface and a curling is provided. A binder of a magnetic layer comprises 40 to 70 wt. % of a urethane resin, 15 to 40 wt. % of an epoxy resin and 10 to 40 wt. % of a phenoxy resin.
Claims5
A magnetic recording medium having a substrate coated with a magnetic layer which comprises a binder and a magnetic powder, said binder in the magnetic layer comprising 40 to 70 wt. % of a urethane resin, 15 to 40 wt. % of a thermosetting epoxy resin characterized by its content of epoxide groups, and 10 to 40 wt. % of a thermoplastic phenoxy resin characterized by its content of polyhydroxyether groups.
Dependencies are inferred from the claim text.