Process of producing a magnetic recording element

Details Process of producing a magnetic recording element Process of producing a magnetic recording element

G - Physics

11

B

117/24.2

G11B 5/70 (2006.01) G11B 5/738 (2006.01)

Patent

CA 1093905

F-2-16705/76 ABSTRACT OF THE DISCLOSURE A process of producing a magnetic recording element comprising a non-magnetic support having provided thereon a sub- bing layer and further having provided thereon a magnetic layer comprising a ferromagnetic powder and a binder, in which the non- magnetic support is a biaxially stretched polyester and the subbing layer is formed by coating a coating solution of about 0.8 to about 5 wt% concentration of a solid component comprising an amorphous linear saturated polyester resin containing an aromatic dicarboxylic acid, 10 to 50 wt% of a vinylidene chloride addition polymerizable nitrile copolymer based on the polyester resin and an organic solvent mainly composed of methyl ethyl ketone, which comprises coating the subbing solution at a tempera- ture of about 100°C or below to provide a dry thickness of about 0.03 to about 2.0 µm, drying the coated layer and then coating the magnetic recording layer thereon.

262503

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