Ricoh Company, Ltd.

Mitsubishi Plastics, Inc.

Hiroki Kuboyama

Hiroyuki Uemura

Hidehiro Mochizuki

Chiharu Nogawa

Keishi Taniguchi

Hiroshi Goto

Masaru Shimada

Kyoji Tsutsui

Keishi Kubo

Eiichi Kawamura

Ichiro Sawamura

Shoji Maruyama

Hideaki Ema

Takehito Yamaguchi

Yutaka Ariga

Yoshihiko Hotta

Tadafumi Tatewaki

Shinya Kawahara

Shuji Miyamoto

Tomohiko Terai

Makoto Kajiyashiki

Shinya Takemoto

Hiroshi Higashi

Naoya Morohoshi

Satoshi Arai

Yutaka Kuga

Makoto Sekiyama

Yasuhiro Kadota

Satoru Sampei

Yoshiko Sakata

Shinya c/o Mitsubishi Plastics Inc Takemoto

Makoto c/o Mitsubishi Plastics Inc Kajiyashiki

Tomohiko c/o Mitsubishi Plastics Inc Terai

Hiroshi c/o Mitsubishi Plastics Inc Higashi

A recording medium contains a support, and an antistatic agent-containing layer, and the antistatic agent-containing layer contains a binder resin and tin oxide-coated titanium oxide particles.

Recording medium

A reversible thermosensitive recording medium including a substrate, and a thermosensitive layer including an electron donating coloring compound, an electron accepting compound, and a phenol anti-oxidation agent containing one or more sulfur atoms having an alkyl group on one side. In addition, the thermosensitive layer reversibly changes its color tone depending on temperature to reversibly record and erase an image thereon.

Reversible thermosensitive recording medium, reversible thermosensitive recording label, reversible thermosensitive recording device, image processing apparatus, and image processing method

A heat reversible recording medium includes a heat sensitive layer which comprises a resin and an organic low molecular compound, and has a transparency which is reversibly variable depending on a temperature. The heat sensitive layer has a glass transition temperature change of &#x2212;10&#xb0; C. to 5&#xb0; C., and a transparency temperature width of 30&#xb0; C. or more.

Heat reversible recording medium, heat reversible recording label, heat reversible recording member, image processor and image processing method

An information recording-displaying card, includes: a core sheet; and an over sheet bonded to the core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer disposed on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of relatively forming a coloring state and a decolorizing state, with a difference in at least one of heating temperature, and cooling rate after heating. The over sheet is embossable in an upper portion thereof, functions as an image displaying section, and meets the following condition (A) and condition (B): (A) (the over sheet's upper limit temperature for erasing &#x2212;30&#xb0; C.)&#x2266;(temperature of a storage elasticity E' (1.0 E+08) Pa)&#x2266;200&#xb0; C., and (B) 1.0 E+04 Pa&#x2266;(the storage elasticity E&#x2032; of the over sheet at 180&#xb0; C.)&#x2266;5.0 E+07 Pa.

Information recording-displaying card, image processing method using same, and image processor

An information recording-displaying card, includes: core sheet; and over sheet bonded to core sheet, including: a support including an amorphous polyester resin, and a reversible thermosensitive recording layer on the support, including: an electron-donating coloring compound, and an electron-accepting compound. The reversible thermosensitive recording layer is capable of forming coloring state and decolorizing state, with difference in at least one of the following: heating temperature, and cooling rate after heating. The over sheet is embossable in upper portion thereof, functions as image displaying section, and meets the following conditions (A), (B) and (C): (A) (over sheet's upper limit temperature for erasing&#x2212;30&#xb0; C.)&#x3e;(over sheet's temperature of storage elasticity E' (1.0 E+08) Pa), (B) 10 &#x3bc;m or less of surface waviness WCM, and (C) 1.0 E+02 Pa&#x2266;(storage elasticity E&#x2032; of reversible thermosensitive over sheet at 180&#xb0; C.)&#x2266;5.0 E+07 Pa.

A method of reversible selective manifestation of different states of a functional element is disclosed. The functional element is composed of at least two compounds and is capable of alternatively assuming (a) a first state in which the two compounds interact to form a regular aggregate structure, or (b) a second state in which the two compounds do not interact, and at least one of the two compounds is in an aggregate or crystallized state. The respective conditions for attaining one of the two states can be reversibly and extremely speedily controlled, for instance, by use of a heat application device.

Method of reversible selective manifestation of different states of functional element

A sublimation thermal transfer recording material including a substrate and one or more ink layers formed on one side of the substrate and including at least a yellow sublimable dye, a magenta sublimable dye and a cyan sublimable dye to form at least a black color image on a receiving material, wherein the magenta and the cyan sublimable dye have better light resistance than the yellow sublimable dye.

Thermal transfer recording material and receiving material thereof and

A sublimation thermal image transfer recording method for thermally forming images on an image receiving sheet prepared by forming a dye-receiving layer on a substrate, includes the steps of superimposing a sublimation thermal image transfer recording sheet which has a substrate and at least one recording layer formed thereon containing a sublimable dye, on the image receiving sheet in such a manner that the recording layer of the recording sheet comes into contact with the dye-receiving layer of the image receiving sheet, recording images on the dye-receiving layer of the image receiving sheet by applying thermal energy Ei imagewise to the recording sheet from the substrate side thereof using a thermal head, and subjecting the image-bearing image receiving sheet to heat treatment by applying thermal energy Eb to the image receiving sheet using the thermal head through a sheet member for heat treatment, the thermal energy Eb being smaller than the thermal energy Ei. In the image receiving sheet, an overcoat layer may be formed on the dye-receiving layer, the overcoat layer having a dynamic friction coefficient of less than 0.45 which is measured in accordance with ASTM-01894 and containing a silicone resin and a lubricant.

Sublimation thermal image transfer recording method and image receiving

A sublimation thermal transfer recording material including a smooth and excellent heat resistant layer which has excellent feeding property and excellent image qualities even when used for n-fold speed mode multiple sublimation thermal transfer recording. The sublimation thermal transfer recording material comprises a substrate, an ink layer formed thereon and a heat resistant layer formed on the non-layered side of the substrate, wherein the heat resistant layer has a softening point of at least 200.degree. C. which is measured by a method based on JIS-K7196.

Sublimation thermal transfer recording method and recording material

A sublimation thermal image transfer recording medium has a substrate, a dye-containing layer formed on the substrate, containing a sublimable dye, and a top layer formed on the dye-containing layer, with the softening temperature of the top layer being at least 200.degree. C. which is measured in accordance with Japanese Industrial Standards JIS-K7196, and the coefficient of friction thereof being 0.2 or less which is measured in accordance with ASTM-D1894. In addition, there is provided a sublimation thermal image transfer recording method which includes the step of superimposing an image receiving sheet having a dye image receiving layer on the above-mentioned sublimation thermal image transfer recording medium, with imagewise application of heat thereto, with the dyeability of the top layer of the recording medium being controlled to be lower than that of the dye image receiving layer of the image receiving sheet.

Sublimation-type thermal image transfer recording medium and thermal

A sublimation-type thermal image transfer recording medium is composed of a support, a dye-containing layer formed on the support, containing a sublimable dye, and a top layer formed on the dye-containing layer, containing a hydrolyzed product of a silane coupling agent. This sublimation-type thermal image transfer recording medium may be composed of a support, at least two dye-containing layers formed on the support, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed, and a top layer formed on at least the two dye-containing layers, containing a hydrolyzed product of a silane coupling agent. Alternatively, the above sublimation-type thermal image transfer recording medium may be composed of a support, a dye-supply layer formed on the support, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed, a dye-transfer layer formed on the dye-supply layer, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed and a low-dyeable resin layer formed on the dye-transfer layer, containing an organic binder agent and a hydrolyzed product of a silane coupling agent.

Sublimation-type thermal image transfer recording medium

An image receiving sheet for sublimation-type thermal image recording includes substrate; and a dye receiving layer which is formed on the substrate directly or through an intermediate layer, the dye receiving layer including a dyeable cured resin and having a gel percentage of 70 wt. % or more. A sublimation-type thermal image transfer recording method for recording images by use of this image receiving sheet and a sublimation-type thermal image transfer recording medium is disclosed.

Image receiving sheet for sublimation-type thermal image transfer

A reversible thermosensitive coloring composition is composed of (i) an electron-donor coloring compound and (ii) an electron-acceptor compound selected from the group consisting of an organic phosphoric acid compound, an aliphatic carboxylic acid, and a phenolic compound, each having a straight chain or branched chain alkyl group or alkyenyl group having 12 or more carbon atoms, the electron-donor coloring compound and the electron-acceptor compound being capable of reacting to induce color formation in the reversible thermosensitive coloring composition at the eutectic temperature thereof. The electron-donor coloring compound and the electron-acceptor compound, when fused and colored in a mixed state, with application of heat thereto, followed by rapidly cooling the fused mixture, exhibit an exothermic peak in a temperature elevation process in a differential scanning calorific analysis or in a differential thermal analysis. A recording medium and display medium using the above reversible thermosensitive coloring composition, a recording method of using the recording medium, a display method of using the display medium, a display method of using the display medium, and a display apparatus using the display medium are disclosed.

Reversible thermosensitive coloring composition, recording medium,

A sublimation-type thermal image transfer recording medium is composed of a support, a dye-containing layer formed on the support, containing a sublimable dye, and a top layer formed on the dye-containing layer, containing a hydrolyzed product of a silane coupling agent. This sublimation-type thermal image transfer recording medium may be composed of a support at least to dye-containing layers formed on the support, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed, and a top layer formed on at least the two dye-containing layers, containing a sublimable product of a silane coupling agent. Alternatively, the above sublimation-type thermal image transfer recording medium may be composed of a support, a dye-supply layer formed on the support, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed, a dye-transfer layer formed on the dye-supply layer, containing a sublimable dye and an organic binder agent in which the sublimable dye is dispersed and a low-dyeable resin layer formed on the dye-transfer layer, containing an organic binder agent and a hydrolyzed product of a silane coupling agent.

Growing community of inventors

Mishima, Japan

Hiroki Kuboyama