Fuji Photo Film Company, Limited

Shell Internationale Research Maatschappij, B.v.

Keiji Tanaka

Masaaki Fujiyama

Kazuya Watanabe

Eiichi Tadokoro

Nobuo Tsuji

Naoyoshi Chino

Tsunehiko Sato

Yasuhito Hiraki

Noriaki Shinoda

Kenichi Fukumura

Shinichi Funabashi

Yasushi Kawamura

Takahiro Ozaki

Makoto Yoshimura

Isao Yamamoto

Hiromi Nakahara

Kazushige Ohmura

Hiroki Yano

Takeri Koga

Hatsuo Honryo

Kouichi Numazawa

Hirofumi Kuwabara

Toshihiro Asakura

Shigeyuki Sugimori

Takeo Yamamoto

Kazuhiro Miyajima

Takumi Matsumoto

A process for producing a magnetic recording medium is described in which a hardening agent and a lubricant are added to a magnetic coating solution prior to coating thereof on a non-magnetic support. It has been found that improved magnetic recording properties and consistent product characteristics are obtained if the addition of the hardening agent and lubricant to the magnetic coating solution is carried out within about 240 minutes of surface calendering treatment of the magnetic recording medium.

Process for producing a magnetic recording material

A coating method and apparatus using an extrusion head to apply a liquid film to a running web. The thickness of the film is measured at two transverse points and a roller conveying the web is tilted to correct any difference. The amount of tilt per roller with a roller bearing span of 750 mm is 0.5 to 20 mm, preferably 0.5 to 15 mm.

Thickness-correcting coating method

A device for continuously cutting and winding a web includes a cutter blade mounted so that a flat portion thereof is maintained in elastic contact with an outer surface of a web winding roll so as to prevent the web from creasing and folding as it is being cut.

Device for continuously cutting and winding a web

A supercalendering apparatus for smoothing the surface of a web by passing it through the nip between a metal roll and an elastic roll is disclosed. The elastic roll is composed of a core metal roll having a first coating made of a fibrous material wound about the core roll and an inorganic filler loaded epoxy resin impregnated in the fibrous material, and a second coating of an inorganic filler loaded epoxy resin formed on the first coating.

Supercalendering apparatus

In a supercalender consisting of a metal roll and an elastic roll and smoothing a web by nipping the web between the metal roll and the elastic roll, the elastic roll satisfies the condition of:

Calender roll for supercalender

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Kanagawa, Japan

Keiji Tanaka