Ricoh Company, Ltd.

Mitsuru Maeda

Tadafumi Tatewaki

Tetsuji Kunitake

Shigeru Miyajima

Junko Yamaguchi

Yasumitsu Kuga

Kazuyoshi Inamura

Yoshiaki Yamada

Masaaki Kobayashi

Minoru Hakiri

Takao Igawa

Hiroki Sugiyama

Kazuhiro Hasebe

Susumu Nemoto

Akihiko Goto

Taeko Maeda

A thermal image transfer recording sodium includes a support and a thermal image transfer ink layer formed on the support. The thermal image transfer ink layer contains a coloring agent, a resin with a melting point of 120.degree. C. or more and an SP value of 10.5 to 12.5, and a melt viscosity lowering material for lowering the melt viscosity of the resin, with the compatibility of the resin and the malt viscosity lowering material, measured by a transparency measurement method, being 0.20 or less, or with the melt viscosity at 150.degree. C. of the thermal image transfer ink layer being in the range of 1.times.10.sup.2 to 5.times.10.sup.6 poise.

Thermal image transfer recording medium

A thermal image transfer recording medium includes a support and a thermal image transfer ink layer formed on the support. The thermal image transfer ink layer contains a coloring agent, a resin with a melting point of 120.degree. C. or more and an SP value of 10.5 to 12.5, and a melt viscosity lowering material for lowering the melt viscosity of the resin, with the compatibility of the resin and the melt viscosity lowering material, measured by a transparency measurement method, being 0.20 or less, or with the melt viscosity at 150.degree. C. of the thermal image transfer ink layer being in the range of 1.times.10.sup.2 to 5.times.10.sup.6 poise.

Thermal image transfer recording medium and recording method using the

A thermosensitive image transfer recording medium having a support, a release layer formed thereon containing as the main components an unvulcanized rubber and a thermofusible wax component, and a thermofusible ink layer containing a coloring agent and a thermofusible resin component, with addition of a thermofusible wax component thereto when necessary, formed on the release layer. Further, the release layer may consist of two sub-release layers which are successively overlaid on the support, with one of the sub-release layers containing the thermofusible wax component, and the other sub-release layer containing the unvulcanized rubber and the thermofusible wax component. The thermosensitive image transfer recording medium may further include a mat layer containing a pigment and a binder agent between the support and the release layer, and if necessary an overcoat layer on the thermofusible ink layer, which contains a thermofusible wax component or a mixture of a thermofusible wax component and a thermofusible resin component.

Thermosensitive image transfer recording medium

An electrostatic recording medium is disclosed, which comprises a substrate, an electroconductive layer, and a recording layer which are successively overlaid on the substrate, with the surface of the recording layer being studded with at least one component selected from the group consisting of a polymeric electrolyte, an inorganic salt and a surface active agent.

Electrostatic recording medium

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Shizuoka-ken, Japan

Mitsuru Maeda