Ricoh Company, Ltd.

Nec Corporation

Masahiro Ohki

Masahide Yamada

Naohiro Watanabe

Akinori Saitoh

Ryota Inoue

Shigeru Emoto

Chiaki Tanaka

Tsunemi Sugiyama

Sonoh Matsuoka

Shinichi Wakamatsu

Yohichiroh Watanabe

Takeshi Takada

Ryohta Inoue

Hiroshi Yamada

Eiji Sawamura

Kazushige Yasumatsu

Hiroshi Yamashita

Junichi Awamura

Osamu Uchinokura

Toshiki Nanya

Naohito Shimota

Tomomi Suzuki

Takayuki Yoshii

Kazuyuki Hirai

Toyoshi Sawada

Masashi Nagayama

Yukitsuna Furuya

Keiko Shiraishi

Hideho Tomita

Kazushige Sanyo Chemical Ind Ltd Yasumatsu

Kazuyuki Sanyo Chemical Industries Ltd Hirai

A toner is provided including a binder resin and a wax having primarily C&#x2014;H and C&#x2014;C bonds, and having a melting point of 50 to 90&#xb0; C., wherein the wax is present in a surface portion of the toner in an amount of from 0.1 to 4.0% by weight, wherein the amount of the wax is determined by Fourier transform infrared spectroscopy attenuated total reflectance (FTIR-ATR); and the use of the toner in an image forming method, image forming apparatus, developer and toner cartridge containing the toner.

Toner, developer, image forming method, image forming apparatus, process cartridge, and toner container

Toner and a developer which are excellent in cleaning property and fixing property at low temperature, and capable of forming images with high quality are provided, along with a method for their production. A toner producing method involves dispersing and/or emulsifying an oil phase or a monomer phase containing a toner composition and/or a toner composition precursor in a water-based medium to granulate, wherein the toner has an average circularity of 0.925 to 0.970, and the toner composition and/or the toner composition precursor has a layered inorganic material in which at least a part of interlayer ions in the layered inorganic material has been exchanged with organic ions.

Toner, vessel with the toner, developer, image forming apparatus and process cartridge and image forming method

A toner satisfying at least one of the following relationships:10&#xb0; C.&#x3c;(1&#x2212;2)&#x3c;60&#xb0; C. and 0&#x3c;2/1&#x3c;

Toner and image forming method using the toner

Toner and a developer which are excellent in cleaning property and fixing property at low temperature, and capable of forming images with high quality are provided. A toner prepared by dispersing and/or emulsifying an oil phase or a monomer phase comprising a toner composition and/or a toner composition precursor in a water-based medium to granulate, wherein the toner has an average circularity of 0.925 to 0.970, and the toner composition and/or the toner composition precursor has a layered inorganic material in which at least a part of interlayer ions in the layered inorganic material has been exchanged with organic ions.

A toner satisfying at least one of the following relationships:10&#xb0; C.&#x3c;(1&#x2212;2)&#x3c;60&#xb0; C. and 0&#x3c;2/1&#x3c;2/3 wherein Trepresents a glass transition temperature of the toner and Qrepresents an endothermic quantity at a melting point thereof before melting when heated from &#x2212;20&#xb0; C. to 150&#xb0; C. at a heating speed of 10&#xb0; C./min, and Trepresents a glass transition temperature thereof and Qrepresents a an endothermic quantity at a melting point thereof after melting after heated from &#x2212;20&#xb0; C. to 150&#xb0; C. at a heating speed of 10&#xb0; C./min, cooled to &#x2212;20&#xb0; C. at a cooling speed of 10&#xb0; C./min and heated again at a heating speed of 10&#xb0; C./min.

There are provided: a method for producing a toner containing to granulate a toner and to subjecting the granulated toner to at least washing with an alkali washing solution, in which the total organic carbon amount extractable from the alkali-washed toner is 200 ppm/g or less; a toner comprising polyester in which the total organic carbon amount extractable from the toner is 200 ppm/g or less, under the condition that the toner is subjected to washing with the alkali washing solution before extracting; and an image-forming method using such a toner.

Toner and method for producing the same, and image-forming method using the same

A toner containing a colorant, and a binder resin, wherein the toner is prepared by dissolving or dispersing a colorant, a precursor of the binder resin having a site capable of reacting with an active hydrogen group-containing compound, the active hydrogen group-containing compound, in an organic solvent, to prepare a toner constituent mixture liquid, dispersing or emulsifying the toner constituent mixture liquid, in an aqueous medium while subjecting the precursor to a reaction with the active hydrogen group-containing compound, to prepare a toner dispersion, and removing the organic solvent from the toner dispersion; the binder resin contains a modified polyester having an isocyanate-derived binding site; the Sn content in the toner is 800 ppm or less; the content of a metal which is non Sn and derived from a polyesterified catalyst is 10 ppm to 200 ppm; and the content of a metal which is non Sn and derived from an isocyanated catalyst is 10 ppm to 200 ppm.

Toner, developer, toner container, process cartridge, image forming apparatus, and image forming method

To provide a toner containing an ethyl acetate-soluble polyester component and an ethyl acetate-insoluble polyester component, wherein the toner is granulated in an aqueous medium, the ethyl acetate-insoluble polyester component is obtained by elongating and/or cross-linking a modified polyester resin during granulating and/or after granulating, the modified polyester resin is produced by condensation polymerization of an acid component and at least one type of diol compound selected from aliphatic diol and alicyclic diol in the presence of a catalyst, and the mass average molecular weight of the modified polyester resin is 10,000 to 100,000.

Toner and developer, toner container, process cartridge, image forming apparatus, and image forming method using the same

A toner containing a toner particle manufactured by dispersing an organic solvent in which a component comprising a polymer having a portion reactive with an active hydrogen group is dispersed or dissolved in an aqueous medium; and reacting the polymer with a compound having at least one active hydrogen group, where the polymer is prepared by reacting an aliphatic polyol, a polyester resin and a diisocyanate compound and has an isocyanate group on at least one end of the polymer.

Toner

A toner is provided including a binder resin including at least one polyester resin in an amount of from 50 to 100% by weight, and a colorant having a specific formula, wherein the toner has a shape factor SF-1 of from 120 to 150 and a shape factor SF-2 of from 125 to 180; and a developer using the toner.

Toner and developer using the toner

The object of the present invention is to provide a toner having a uniform composition of toner materials among toner particles, excelling in charge stability, enabling high-quality images without substantially causing fog and toner scattering, and having a small diameter and a narrow particle size distribution. The present invention also provides an effective production method of the toner, and an image forming method and the like using the toner. For this end, the present invention provides a method for producing a toner in which a dissolved and dispersed solution of toner materials is dispersed as dispersion particles in an aqueous medium containing no organic resin fine particles to prepare an oil droplet-in-water dispersion, and organic resin fine particles are added to the oil droplet-in-water dispersion to thereby granulate a toner in the presence of the organic resin fine particles.

Toner and production method of the same, and image forming method

A toner manufacturing method is provided including emulsion-polymerizing monomers including an aromatic vinyl monomer, to prepare a particulate resin dispersion; mixing the particulate resin dispersion and a colorant dispersion including a black metallic material, to prepare an aggregation dispersion including aggregated resin particles including the colorant therein; heating the aggregation dispersion to a temperature of not less than a glass transition temperature of the particulate resin to unite each of the aggregated particles to prepare a toner dispersion; and washing the toner dispersion to obtain the toner; a toner manufactured by the above method, and a developer using the toner.

Toner manufacturing method, toner and developer

A mobile node MN registers a care-of address CoA of a destination with a home agent HA. A node CN to communicate with the mobile node MN inquires a name server DNSY about the care-of address CoA of the mobile node. The name server DNSY obtains the care-of address CoA from the home agent HA and sends it to the node CN in reply. The node CN communicates with the mobile node MN by using the care-of address as the destination address. Alternatively, an access router provided in a subnet holds the care-of address CoA, and forwards packets to the mobile node. This reduces the control traffic and eliminates the triangle routing.

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Numazu, Japan

Masahiro Ohki