Takashi Mimura, Seizo Aoki, Kazuo Matsuura, Kenji Tsunashima: Laminated polyester film for heat-sensitive image transfer material. Toray, Austin R Miller, April 18, 1995: US05407724 (38 worldwide citation)

A film suitable as a base of image transfer material for thermal recording or a heat-sensitive mimeograph stencil is disclosed. The laminated film of the present invention comprises a coating layer on at least one surface of a polyester film, which coating layer contains as a major component a wax-b ...

Katsutoshi Miyakawa, Kenji Tsunashima, Seizo Aoki: Polyester film reflector for a surface light source. Toray, Birch Stewart Kolasch & Birch, September 30, 1997: US05672409 (24 worldwide citation)

A reflector used in a surface light source comprising a white polyester film in which fine voids are formed and whose apparent specific gravity is in the range of 0.5 to 1.2. The reflectance of the polyester film can be increased by the fine voids. When the reflector having a high reflectance is use ...

Itsuo Nagai, Seizo Aoki, Yukichi Deguchi: Polyester film for electrical insulation. Toray, Austin R Miller, April 25, 2000: US06054224 (16 worldwide citation)

An electrical insulating polyester film has an apparent density of 1.37 to 0.85 g/cm.sup.3 and a tensile modulus of 2.0 to 4.5 GPa.

Tatsuya Ito, Kenji Tsunashima, Hideyuki Yamauchi, Seizo Aoki, Hirokazu Kurome: Process for forming a polyester film. Toray, Austin R Miller, March 8, 1994: US05292471 (12 worldwide citation)

A polyester film, which is substantially non-oriented and whose main component is polyethylene terephthalate, is formed into a shape for example, a package, at a condition causing no yield point. The formation ability of the polyester film for forming is improved, and a formed body having a good uni ...

Kenji Tsunashima, Seizo Aoki, Masaru Suzuki, Toshihiko Hiraoka: Polyester film having specific surface properties. Toray, Austin R Miller, December 21, 1993: US05271985 (12 worldwide citation)

This invention relates to a polyester film suited for use in optical recording medium. The polyester film of the present invention has a modulus of photoelasticity of not more than 0.9.times.10.sup.-3 mm.sup.2 /kgf, a maximum surface roughness Rt of not more than 100 nm and a mean interval Sm betwee ...

Seizo Aoki, Kenji Tsunashima, Toshiya Yoshii, Yasuji Nakahara, Takashi Sumiya, Takashi Mimura: Film for heat-sensitive mimeograph stencil. Toray, Austin R Miller, October 29, 1991: US05061565 (11 worldwide citation)

A film for heat-sensitive mimeograph stencil and a heat-sensitive mimeograph stencil comprising a porous support and the film laminated thereon are disclosed. Since the film of the present invention has an energy of crystal fusion .DELTA.Hu of 3-11 cal/g and has a difference Tm in temperature of the ...

Seizo Aoki, Kenji Tsunashima, Tetsuo Ikegami, Seiya Sugiura, Morishige Sonoda, Yukio Ota: Process for producing polyester film. Toray, Birch Stewart Kolasch & Birch, December 31, 1991: US05076976 (3 worldwide citation)

A molten polyester sheet is solidified by cooling it on the surface of a mobile cooling medium on which a water film has been formed. The sheet is stretched at least 4.5-fold in overall stretching ratio in a longitudinal direction through a plurality of stretching steps. Since casting is conducted v ...