Toshiba Tec Kabushiki Kaisha

Kabushiki Kaisha Toshiba

Other

The Pilot Ink Co., Ltd.

Kabushiki Kaisha Pilot Corporation

Kabushiki Kaisha Tec

Kabushiki Toshiba

Takahito Kabai

Osamu Takagi

Ken Iguchi

Minoru Yoshida

Hiroyuki Taguchi

Yoshiaki Kaneko

Tsuyoshi Itou

Seiji Arai

Michihisa Iguchi

Satoshi Katagata

Chinobu Sakai

Tetsuya Nakamura

Takayasu Aoki

Yoshiaki Okano

Hiroshi Hashizume

Hirotaka Fukuyama

Kouichirou Satou

Masahiro Ikuta

Hiroshi Hashidume

Takahisa Hirano

Yasuo Goto

Makoto Tani

Takashi Ishikawa

Masaaki Ishikawa

Satoshi Itaya

Mitsuhisa Kato

Hiroshi Ohno

Takashi Urabe

Toshiaki Yamauchi

Yasuhito Noda

Hisanobu Ajima

Taishi Takano

Shuitsu Sato

Yukihiro Fujikura

Yoshihito Shimada

Tsuyoshi Itoh

Yuichi Hori

Yuuko Takano

An image forming apparatus includes: a first image forming unit which forms a first image on a first recording medium with a first material that is not thermally decolorizable; a second image forming unit which forms a second image on a second recording medium with a second material that is thermally decolorizable; a fixing device which is on a common carrying path shared by the first recording medium and the second recording medium and fixes the first image to the first recording medium; and a controller which controls the fixing device so that a temperature of the fixing device is lower than a decolorizing temperature of the second material when the second recording medium reaches the fixing device.

Image forming apparatus having fixing device that responds to request when using decolorable ink

A method for producing a developing agent including preparing a dispersion liquid containing first fine particles containing a binder resin and second fine particles containing a color developable compound, a color coupler, and a color eraser, and aggregating the first and second fine particles in the dispersion liquid to form aggregated particles.

Developing agent and method for producing the same

Disclosed is a decolorizable electrophotographic toner, including: a binder resin; and a colorant which contains at least a color developable compound and a color developing agent and is covered with an outer shell so as to have a capsule structure, wherein the number ratio of particles having an equivalent circle diameter of 0.6 &#x3bc;m or more and 2.5 &#x3bc;m or less of the toner when measured using a flow particle image analyzer after the toner is dispersed in an aqueous medium at a ratio of 0.08% by weight and the resulting dispersion is subjected to a stirring treatment in which stirring is performed at 5000 rpm for 30 minutes using a homogenizer (T-25 digital ULTRA-TURRAX (manufactured by IKA Japan K.K., provided with a shaft generator S25N-10G)) is 30% by number or less.

Electrophotographic toner and method for producing the same

In accordance with one embodiment, an image forming apparatus forms a metallic toner image with the toner having metallic color tone. The plurality of developing sections includes either or both of a developing section for forming a black toner image with the black toner and a developing section for forming a white toner image with the white toner. The plurality of developing sections is provided with one or more than two developing sections for forming a metallic toner image with the toner having metallic color tone.

Metallic color image forming apparatus and metallic color image forming method

Disclosed here is a method for producing a decolorizable electrophotographic toner, comprising mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm or less are dispersed, aggregating the colorant and the particles containing at least the binder resin, thereby obtaining aggregated particles, fusing the aggregated particles at a temperature lower than a completely decolorizing temperature of the colorant to obtain the toner, and measuring the number ratio of particles having an equivalent circle diameter of 0.6 &#x3bc;m or more and 2.5 &#x3bc;m or less of the toner using a flow particle image analyzer after the toner is subjected to a stirring treatment.

An image forming apparatus includes: a first image forming unit which forms a first image on a first recording medium with a first material which is not thermally decolorized; a second image forming unit which forms a second image on a second recording medium with a second material which is thermally decolorized; a fixing unit which is on a common carrying path shared by the first recording medium and the second recording medium and fixes the first image to the first recording medium; and a control unit which controls the fixing unit so that the temperature of the second recording medium passing through the fixing unit becomes lower than a decolorizing temperature of the second material.

Image forming apparatus and method using decolorable ink

There is provided an image forming apparatus including: an image data acquiring unit that acquires image data of an image formed on a sheet; an identification information acquiring unit that acquires identification information that identifies the sheet on which the image is formed; an image forming unit that forms an image based on the image data on the sheet with a decolorable colorant which becomes colorless by a predetermined chemical reaction and that forms an identification information image based on the identification information on the sheet with a non-decolorable colorant which does not become colorless by the chemical reaction; and a storage control unit that stores the identification information and the image data of the image to be formed on the sheet, on which the identification information image corresponding to the identification information is formed, in a predetermined storage region in a correlated manner.

Image forming apparatus, image forming method, and computer-readable recording medium having image forming program recorded therein

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Shizuoka-ken, Japan

Takahito Kabai