Abstract: A magnetic recording medium comprises a substrate of paper sheet and a magnetic recording layer applied to the substrate, which layer contains a magnetic material and an ultraviolet- or an electron beam-curing binder resin.
Abstract: A magnetic recording medium which has a protective layer on a magnetic recording layer coated on a substrate and said protective layer comprises polyurethane and nitrocellulose in which isopropyl alcohol originally present has been replaced by a resin selected from the group consisting of polyurethane resins, polybutadiene resins, butadiene-acrylonitrile copolymers, vinyl chloride-vinyl acetate-vinyl alcohol copolymers, vinyl chloride-vinyl acetate copolymers, vinyl chloride-vinylidene chloride copolymers, vinylidene chloride-acrylonitrile-copolymers, vinyl acetate resins, epoxy resins, phenoxy resins, polyvinylbutyral resins, polyvinyl formal resins and polyester resins.
Type:
Grant
Filed:
April 5, 1979
Date of Patent:
December 23, 1980
Assignees:
TDK Electronics Co., Ltd., Tokyo Magnetic Printing Co., Ltd.