Fuji Photo Film Company, Limited

Masaru Sekine

Ryuji Shirahata

Goro Akashi

Tadashi Yasunaga

Noburo Hibino

An apparatus for correcting curl of a belt-like magnetic recording medium made of a ferromagnetic thin film formed on a flexible substrate, in which the magnetic recording medium fed from a master roll thereof contacts a heating roller so that curl of the magnetic recording medium is corrected. The surface of the heating roller is covered with a material having thermal conductivity lower than that of a material forming the body of the heating roller.

Apparatus for correcting curl of magnetic recording medium

A magnetic recording medium manufacturing apparatus is comprised of a cooling rotary cylinder can and a small roller, arranged adjacent to each other. A flexible endless belt is laid over the can and roller and carries a tape-shaped support. A ferromagnetic material, evaporated from an evaporation source disposed below the can and roller, is vacuum-deposited onto the tape-shaped support.

Apparatus for manufacturing magnetic recording media

A magnetic recording medium manufacturing apparatus is comprised of a cooling rotary cylinder can and a small roller, arranged adjacent to each other, and with the small roller being swingable about the central axis of the can. A flexible endless belt is laid over the can and roller and carries a tape-shaped support. A ferromagnetic material, evaporated from an evaporation source disposed below the can and roller, is vacuum-deposited onto the tape-shaped support.

Magnetic recording medium manufacturing apparatus

A method for preparing a magnetic recording medium is disclosed. The method involves forming a thin magnetic layer on a polyester film by means of a vapor deposition or plating method, continually moving the film while maintaining it at a tension of 400 g/mm.sup.2 or less and contacting the moving film with a heating device at a temperature within the range of 70.degree. to 200.degree. C. for a period of time within the range of 0.1 to 30 seconds. The method provides a non-binder type magnetic recording medium having improved skew characteristics without formation of curls.

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Kanagawa, Japan

Masaru Sekine