Toppan Printing Co., Ltd.

Minolta Camera Kabushiki Kaisha

Yosei Chosa

Masato Yoshida

Hirokatsu Shimada

Takayuki Yokoyama

Takeo Kawakami

A transfer recording medium capable of obtaining a satisfactory transfer image is provided without fusing a base film due to heat even if the medium is used for a printer using a large-output laser beam. The medium is made by forming an adiabatic layer or a heat absorbing layer between the base film and a light-heat conversion layer or an ink layer containing a light-heat conversion agent and sublimating dye formed on one side of the base film or forming the heat absorbing layer on the other side of the base film.

Transfer recording medium

A thermal transfer recording medium comprises a substrate and, laminated thereto, an ink layer containing a sublimation dye and a binder resin. The binder resin comprises (a) from 60 to 90% by weight of polyvinyl butyral with a degree of polymerization of from 1,500 to 2,500 and a glass transition point of not lower than 70.degree. C., and (b) from 10 to 40% by weight of ethyl cellulose with a glass transition point of not lower than 130.degree. C.

Thermal transfer recording medium

A thermal transfer recording medium such as a color thermal transfer paper or ribbon which is used in combination with a thermal head or pen to print an image on an image forming body or sheet. The thermal transfer recording medium comprises a polyester supporting film, a first thermal transfer layer formed on the supporting film, which consists mainly of a saturated polyester copolymer having a molecular weight of 8,000 to 30,000 and containing a sublimation or hot-melt transfer dye. A second thermal transfer layer containing a dye as that of the first transfer layer may be formed on the first transfer layer. The thermal transfer image forming body comprises a supporting body, a dyeing image forming layer formed on the supporting body and made mainly of a thermoplastic resin having four or more OH group per molecule, a tensile break strength of 300 kg/cm.sup.2 or more and tensile break elongation of 20% or more, and a surface layer made of a silicone resin.

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Yokohama, Japan

Yosei Chosa