Ricoh Company, Ltd.

Hiromitsu Kawase

Masaru Matsuda

Hiroshi Yamashita

Toshiki Nanya

Kimitoshi Yamaguchi

Keiko Shiraishi

Masahiro Masuzawa

Hideo Yanagita

Okitoshi Kimura

Yuu Zama

Yoichiro Watanabe

Makoto Ookawara

Akihiro Kotsugai

Shinichi Kuramoto

Ryuji Higashi

Kazuo Tsubuko

Yoshikazu Kaneko

Takamichi Enomoto

Shoji Maruyama

Koichi Katoh

Keigo Takauji

Toshihiko Takahashi

Kohji Matsuoka

Masanaga Imamura

Miku Ohkimoto

Yusuke Kanno

Kouchi Ohshima

Junji Toda

Katsumi Kuboshima

A liquid composition for manufacturing electrodes contains a radical polymerizable composition containing an ethylenically unsaturated compound having an oxyethylene group and a polymerization inhibitor, wherein infrared absorption spectra before curing the radical polymerizable composition include a first absorption band in a range of 1640 to 1620 cm, a second absorption band in a range of 1430 to 1400 cm, and a third absorption band in a range of 820 to 800 cm, and the second absorption band has a greater absorption intensity than the third absorption band, and the third absorption band has a greater absorption intensity than the first absorption band, and

Liquid composition, method of manufacturing electrodes and method of manufacturing electrochemical device

A porous insulator is provided. The porous insulator comprises a porous structure comprising a polymer compound having communicating pores, and a solid having a melting point or glass transition temperature lower than that of the polymer compound.

Porous insulator, electrode, and nonaqueous power storage element

A method of forming a toner image on an image transfer sheet include the steps of forming a latent electrostatic image on an image bearing member, developing the latent electrostatic image to a toner image, using a developer, and transferring the toner image to an image transfer sheet, with the developer having a carrier and a toner which contains a thermoplastic resin and a coloring agent having a chromatic color and capable of retaining the chromatic color even after the toner is sintered, and satisfying at least one of three conditions that (1) a toner concentration in the developer is in a range of 8 to 24 wt. %, (2) the toner has an absolute charge quantity value of 12 &mgr;C/g or less, and (3) a ratio of a true specific gravity of the carrier to that of the toner is in a range of 2 to 3. An image can be fixed on a heat-resistant solid surface by further attaching the toner image transferred to the image transfer sheet to a heat-resistant solid surface and sintering the toner image. Further, a developer and a toner image bearing transfer sheet are also disclosed.

Method of forming toner image on image transfer sheet, method of fire fixing image on heat-resistant solid surface, developer and toner image bearing transfer sheet

A toner composition useful for forming a single or full colored image on a transfer sheet, containing a coloring agent, and a binder resin, wherein the coloring agent contains a plural kinds of metal elements (a) which contribute to the color of the coloring agent and at least one kind of a metal element (b) which does not contribute to the color of the coloring agent. At least one of the metal elements (a) shows substantially the same two-dimensional distribution within an area of at least 1 square .mu.m as that of the metal element (b) when analyzed by an electron prove micro analyzer. By sintering a ceramic, such as a tile, on which the image-bearing transfer sheet has been applied, a pattern corresponding to the toner image is formed on the ceramic.

Toner composition and use thereof for forming sintered pattern on solid

A method of forming a toner image on an image transfer sheet include the steps of forming a latent electrostatic image on an image bearing member, developing the latent electrostatic image to a toner image, using a developer, and transferring the toner image to an image transfer sheet, with the developer having a carrier and a toner which contains a thermoplastic resin and a coloring agent having a chromatic color and capable of retaining the chromatic color even after the toner is sintered, and satisfying at least one of three conditions that (1) a toner concentration in the developer is in a range of 8 to 24 wt. %, (2) the toner has an absolute charge quantity value of 12 .mu.C/g or less, and (3) a ratio of a true specific gravity of the carrier to that of the toner is in a range of 2 to 3. An image can be fixed on a heat-resistant solid surface by further attaching the toner image transferred to the image transfer sheet to a heat-resistant solid surface and sintering the toner image. Further, a developer and a toner image bearing transfer sheet are also disclosed.

Method of forming toner image on image transfer sheet, method of fire

A toner composition useful for forming a single or full colored image on a transfer sheet, containing a finely divided coloring agent, and a binder resin, wherein the coloring agent includes a compound oxide pigment and a flux. By sintering a ceramic, such as a tile, on which the image-bearing transfer sheet has been applied, a pattern corresponding to the toner image is formed on the ceramic.

A toner having toner particles for developing latent electrostatic images, each toner particle containing a binder resin and a coloring agent, tho binder resin including a vinyl polymer prepared by polymerizing a plurality of different vinyl monomers, with a weight-average molecular weight (Mw) of 30,000 or less, and a peak molecular weight (PMw) of 10,000 or less in the weight-average molecular weight (Mw), with the amount ratio of a vinyl polymer with a molecular weight of not less than the value of PMw.times.10 being in the range of 1 to 30 wt. % of the entire amount of the vinyl polymer.

Toner for developing latent electrostatic images

A toner having toner particles for developing latent electrostatic images, each toner particle containing a binder resin and a coloring agent, the binder resin including a vinyl polymer prepared by polymerizing a plurality of different vinyl monomers, with a weight-average molecular weight (Mw) of 30,000 or less, and a peak molecular weight (PMw) of 10,000 or less in the weight-average molecular weight (Mw), with the amount ratio of a vinyl polymer with a molecular weight of not less than the value of PMw.times.10 being in the range of 1 to 30 wt % of the entire amount of the vinyl polymer.

A method of forming a colored image on a heat resistant solid surface by use of a toner-image-layer-bearing image formation medium; a method of forming the toner-image-layer bearing image formation medium; inorganic toners for the formation of inorganic toner image for proposed.

Method of forming colored image by use of inorganic toner, inorganic

Polymer particles which are substantially spherical and have protrusions on the surface thereof, with such a particle size distribution that the volume mean diameter dv thereof is 1.ltoreq.dv.ltoreq.15 (.mu.m), and the ratio of the volume mean diameter dv to the number mean diameter dn thereof, that is, dv/dn, is 1.ltoreq.dv/dn.ltoreq.1.2, are prepared, and used as a component for a toner for use in electrophotography.

Polymer particles, method of producing the same, and toner for use in

An image formation material for forming images including color images, such as a toner or developer for use in image formation methods such as electrophotography, electrostatic recording, and in an ink jet printing, includes a binder resin, a dye, and a quencher for preventing the deterioration of the dye; and a method of preventing the fading of images formed by the above image formation methods can be carried out by use of this image formation material.

Image formation materials and image fading prevention method

Polymer particles and toner for electrophotography using the polymer

A method of preparing composite particles is disclosed, which comprises the steps of dispersing matrix organic resin particles having a polar group on a surface thereof in a hydrophilic organic liquid, water or mixture thereof to prepare a dispersion of the matrix organic resin particles; dispersing a wax in a hydrophilic organic liquid, water or mixture thereof by use of a nonionic surface active agent to prepare an emulsion of the wax; mixing the dispersion of the matrix organic resin particles and the emulsion of the wax in the presence of a surface active agent with a polarity opposite to that of the polar group on the matrix organic resin particles to obtain a dispersion in which finely-divided particles of the wax are caused to adhere to the surface of the matrix particles; and heating the dispersion to fix the finely-divided particles of the wax on the surface of the matrix organic resin particles.

Method of preparing composite particles comprising adhering wax

A toner for developing latent electronstatic images comprises a coloring agent, a binder resin component and a negative charge controlling agent in an effective amount which is selected from the group consisting of:

A negatively chargeable toner for developing latent electrostatic images comprising a coloring agent, a resin component which comprises a homopolymer of a first monomer having formula (I) or a copolymer of the aforementioned first monomer and a second monomer: ##STR1## wherein R.sup.1 represents --H or --CH.sub.3 ; R.sup.2 and R.sup.3 each represent --CN, --COOH or --NO.sub.2 ; R.sup.4 represents --F, --Cl or --Br; and n is an integer of 1 to 10.

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Mishima, Japan

Hiromitsu Kawase