Azo Containing Adjuvant Patents (Class 430/108.23)
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Patent number: 11442373Abstract: An electrostatic ink composition comprising a carrier liquid; a first resin comprising a copolymer of an alkylene monomer and a methacrylic acid monomer; and a second resin comprising a copolymer of an alkylene monomer and an acrylic acid monomer, wherein the second resin constitutes at least 35 wt. % of the total amount of resin is disclosed.Type: GrantFiled: July 10, 2017Date of Patent: September 13, 2022Assignee: HP Indigo B.V.Inventors: Hanit Marom Tchaicheeyan, Albert Teishev, Igor Shutyi, Yael Kowal-Blau, Matan Schneider
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Patent number: 11305455Abstract: A shaped ceramic or metallic object is formed by sectioning a model of a shaped body into 2-dimensional slices. For each slice, a toner material is electrostatically printed on a polymer sheet. The toner material includes solid particles. The printed sheets are assembled into a stack and the stack is depolymerized and sintered to form the ceramic object.Type: GrantFiled: September 24, 2018Date of Patent: April 19, 2022Assignee: XEROX CORPORATIONInventors: Christopher D. Blair, David C. Irving
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Patent number: 11070148Abstract: A triboelectric nanogenerator structure is provided. The triboelectric nanogenerator structure is composed of an upper electrode layer, a lower triboelectric layer, a lower electrode layer and an electric connecting member. The upper electrode layer is composed of a hybrid gel. The lower triboelectric layer corresponding to the upper electrode layer has a first surface and a second surface, and the first surface faces toward the upper electrode layer. The lower electrode layer is disposed at the second surface. The electric connecting member connects the upper electrode layer to the lower electrode layer.Type: GrantFiled: March 13, 2019Date of Patent: July 20, 2021Assignee: NATIONAL TSING HUA UNIVERSITYInventors: Zong-Hong Lin, Che-Min Chiu, Yun-Ting Jao, Yi-Yun Ke, Po-Kang Yang
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Patent number: 10828887Abstract: A method of recording an image on a recording medium by applying an auxiliary liquid containing a water-soluble resin and wax particles to an intermediate image formed on an intermediate transfer member, bringing the intermediate image into contact with the recording medium at a temperature higher than a melting point of the wax particles, subsequently peeling off the intermediate image from the intermediate transfer member at a temperature lower than the melting point of the wax particles and transferring the intermediate image onto the recording medium. The method can improve the efficiency of transferring the intermediate image from the intermediate transfer member onto the recording medium.Type: GrantFiled: August 21, 2018Date of Patent: November 10, 2020Assignee: Canon Kabushiki KaishaInventors: Shinichi Sakurada, Takashi Imai
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Patent number: 10619005Abstract: Embodiments of the present invention are concerned with a method for producing a binder resin composition, from which a toner having excellent low-temperature fusing property, heat-resistant storage stability, durability, and image density is obtained, a binder resin composition, and a toner for development of electrostatic images including the binder resin composition. Embodiments according to the present invention are concerned with the following [1] to [3].Type: GrantFiled: August 28, 2018Date of Patent: April 14, 2020Assignee: KAO CORPORATIONInventors: Norihiro Fukuri, Christopher Johnson
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Patent number: 10481513Abstract: The toner for electrostatic charge development includes a toner particle including: a toner base particle containing a binder resin and a release agent; and an external additive containing titanium dioxide. The number fraction of the toner particle containing the titanium dioxide is 0.1% or more and 2.0% or less.Type: GrantFiled: January 7, 2019Date of Patent: November 19, 2019Assignee: KONICA MINOLTA, INC.Inventors: Kenshi Miyajima, Kouji Sugama
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Patent number: 10394149Abstract: The present invention provides a toner for development of electrostatic images including a polyester-based resin and a polypropylene-based wax, which is excellent in fusing properties on a polypropylene film. The present invention relates to [1] a resin binder composition for toners for development of electrostatic images which has an endothermic amount ratio ?HCW/W of not less than 0.10 and not more than 0.Type: GrantFiled: May 18, 2016Date of Patent: August 27, 2019Assignee: Kao CorporationInventors: Tomohide Yoshida, Shoichi Murata, Manabu Suzuki, Eiji Shirai
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Patent number: 10078282Abstract: Disclosed are toner compositions that include an amorphous polyester resin, a crystalline polyester resin, a colorant and a wax, and where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic anhydride to less than 16 weight percent of dodecylsuccinic anhydride, or where the amorphous polyester resin contains in excess of zero weight percent of dodecylsuccinic acid to less than 16 weight percent of dodecylsuccinic acid.Type: GrantFiled: August 7, 2015Date of Patent: September 18, 2018Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Ke Zhou, Michael S. Hawkins, Edward G. Zwartz
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Patent number: 9996018Abstract: In a toner containing a resin, a pigment, and a pigment dispersant, the resin contains a polar resin having an acid value of 2.0 to 30.0 mgKOH/g, and the pigment dispersant has the structure represented by the following formula (1) and a polymer moiety bonded thereto.Type: GrantFiled: August 30, 2016Date of Patent: June 12, 2018Assignee: Canon Kabushiki KaishaInventors: Haruko Kubo, Yu Yoshida, Yuhei Terui, Hitoshi Itabashi
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Patent number: 9971259Abstract: To provide a crosslinked polyester resin by using environmentally friendly and low-cost raw materials while reducing the content of a bisphenol A-derived component. [Subject Matter] [Solutions] To provide a polyester resin containing a trivalent or higher acid-derived component and a bisphenol A-alkylene oxide adduct-derived component. In such a polyester resin, the bisphenol A-alkylene oxide adduct-derived component is contained at 0.01˜0.35 mol relative to 1 mol of all the acid-derived components, and the ratio of acid value (mg KOH/g) to hydroxyl value (mg KOH/g) is set to be 1:3˜1:26.Type: GrantFiled: May 28, 2015Date of Patent: May 15, 2018Assignee: Mitsubishi Chemical CorporationInventors: Yoko Tamura, Tadahiro Ozawa, Akifumi Kondo
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Patent number: 9933720Abstract: An object of the present invention is to provide an electrostatic image developing toner including toner particles containing: an amorphous resin including an amorphous vinyl resin; and a crystalline resin, wherein the toner particles contain: a coloring agent including C. I. Pigment Yellow 74; and alkoxy aniline with an amount in the range of 0.1 to 50.0 mass ppm in the toner particles.Type: GrantFiled: January 9, 2017Date of Patent: April 3, 2018Assignee: KONICA MINOLTA, INC.Inventors: Takanari Kayamori, Masaharu Matsubara, Naoya Tonegawa, Kouji Sekiguchi, Atsushi Iioka
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Patent number: 9825288Abstract: A method for making a lithium ion battery anode active material comprising: providing silicon particles and a silane coupling agent, wherein the silane coupling agent comprises a hydrolysable functional group and an organic functional group; mixing the silicon particles and the silane coupling agent in water to obtain a first mixture; adding a monomer or oligomer to the first mixture to obtain a second mixture, the surfaces of the silicon particles being coated with a polymer layer by in situ polymerization method to obtain silicon polymer composite material, the monomer or the oligomer reacting with the organic functional group of the silane coupling agent in a polymerization, thereby a generated polymer layer being chemically grafted on the surfaces of the silicon particles; and heating the silicon polymer composite material to carbonize the polymer layer to form a carbon layer coated on the surfaces of the silicon particles.Type: GrantFiled: July 2, 2014Date of Patent: November 21, 2017Assignees: Jiangsu Huadong Institute of Li-ion Battery Co. Ltd., Tsinghua UniversityInventors: Qing-Wei Cui, Jian-Jun Li, Xiang-Ming He, Jiang Cao, Li Wang, Zhong-Jia Dai
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Patent number: 9823594Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: October 17, 2016Date of Patent: November 21, 2017Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9804518Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin, a colorant, and 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide, wherein the colorant contains at least one of Pigment Red 238 and Pigment Red 269, the content of the colorant is from 1% by weight to 20% by weight, and the content of 5?-chloro-3-hydroxy-2?-methoxy-2-naphthanilide is from 1 ppm to 300 ppm based on the weight.Type: GrantFiled: November 11, 2015Date of Patent: October 31, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Akira Matsumoto, Shinya Nakashima, Masaki Iwase
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Patent number: 9733586Abstract: A resin composite particle includes a continuous phase formed of a polyester resin, and a dispersed phase formed of a vinyl resin and dispersed in the continuous phase, the volume average particle diameter of the resin composite particles being from 50 nm to 1,000 nm.Type: GrantFiled: February 8, 2016Date of Patent: August 15, 2017Assignee: FUJI XEROX CO., LTD.Inventors: Kousaku Yoshimura, Tomohiro Shinya, Kiyohiro Yamanaka, Shinpei Takagi
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Patent number: 9625845Abstract: The present invention provides a compound capable of improving the dispersibility of yellow, magenta, cyan, and black pigments in a water-insoluble solvent and a pigment-dispersing agent. The present invention also provides a pigment composition, a pigment dispersion, and a toner, which have satisfactory tinting strength. The present invention relates to a compound having a structure in which an azo skeleton structure is bound to a polymer portion via a linking group in the azo skeleton structure.Type: GrantFiled: April 24, 2014Date of Patent: April 18, 2017Assignee: Canon Kabushiki KaishaInventors: Ayano Mashida, Yasuaki Murai, Waka Hasegawa, Masanori Seki, Takayuki Toyoda, Masashi Kawamura, Chiaki Nishiura, Yuki Tsujii, Taiki Watanabe, Masashi Hirose
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Patent number: 9618867Abstract: A pigment dispersion containing a pigment, a non-water-soluble solvent, a compound in which an specific azo skeleton structure is bonded to a specific polymer having a monomer unit given, and a polymer compound having a monomer unit that contains a structure selected from the partial structures given by the specific formulas (3) and (4).Type: GrantFiled: February 16, 2016Date of Patent: April 11, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Takayuki Toyoda, Yasuaki Murai, Waka Hasegawa, Masanori Seki, Chiaki Nishiura, Yuki Tsujii, Ayano Mashida, Masashi Hirose
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Patent number: 9605378Abstract: A textile printing method that includes printing to a textile with a material including a dye expressed by the following general formula 1. In general formula 1, R1 to R16 is H, CH3, OH, NHC2H5, COOH, SO3H, SO3Na, NO2, or NH2.Type: GrantFiled: December 1, 2014Date of Patent: March 28, 2017Assignee: Ricoh Company, Ltd.Inventors: Tsuyoshi Asami, Tsuneo Kurotori, Takeo Yamaguchi, Noriaki Okada
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Patent number: 9593243Abstract: Provided is a compound that improves dispersibility of a pigment in a non-water-soluble solvent, and a pigment dispersing agent, a pigment composition, a pigment dispersion and a toner that use that compound. The present invention relates to a compound in which a polymer and a monoazo compound having a specific structure are bonded. The present invention further relates to a pigment dispersing agent, a pigment composition, a pigment dispersion and a toner containing that compound.Type: GrantFiled: August 26, 2014Date of Patent: March 14, 2017Assignee: CANON KABUSHIKI KAISHAInventors: Yuki Tsujii, Yasuaki Murai, Takayuki Toyoda, Waka Hasegawa, Masanori Seki, Chiaki Nishiura, Masashi Kawamura, Masashi Hirose, Ayano Mashida
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Patent number: 9523935Abstract: An electrostatic charge image developing toner includes a binder resin, a colorant, and 4-nitro-o-anisidine, wherein the colorant contains a compound represented by the following formula (I), a content of the colorant in the toner is from 1.0% by weight to 20.0% by weight, and a content of 4-nitro-o-anisidine in the toner is from 0.1 ppm to 1,000 ppm based on the weight: wherein R represents an organic group.Type: GrantFiled: February 17, 2016Date of Patent: December 20, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Masaki Iwase, Akira Matsumoto
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Patent number: 9470997Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: August 10, 2015Date of Patent: October 18, 2016Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9360780Abstract: To provide a toner, containing: a noncrystalline resin; and a crystalline resin, wherein the crystalline resin has a weight average molecular weight of 100,000 to 180,000, wherein a temperature range of the toner, within which a loss tangent (tan ?) as measured by a dynamic viscoelasticity measurement is 6 or greater, is 20° C. or greater, and wherein a fixed toner image has 60° glossiness of 30 to 50, where the fixed toner image is obtained by forming an unfixed toner image having a deposition amount of 0.4 mg/cm2 on a recording medium having 60° glossiness of 30 for a measurement, and fixing at temperature at which temperature of the toner image is a lowest temperature of the temperature range +10° C., at 0.15 MPa, for a nipping duration of 50 msec.Type: GrantFiled: March 7, 2014Date of Patent: June 7, 2016Assignee: Ricoh Company, Ltd.Inventors: Kazumi Suzuki, Yoshitaka Yamauchi
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Patent number: 9342029Abstract: An image forming apparatus includes a first image forming unit configured to form a first image with a decolorable material and a second image forming unit configured to form a second image with a non-decolorable material. A color state of the decolorable material changes from a first color state to a second color state when a temperature thereof increases from a room temperature to a human body temperature, and from the second color state to the first color state when the temperature thereof decreases from the human body temperature to the room temperature. The first image overlaps with at least a portion of the second image.Type: GrantFiled: September 29, 2015Date of Patent: May 17, 2016Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki KaishaInventor: Sunao Tabata
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Patent number: 9323168Abstract: A yellow toner is provided which is superior in dispersibility of C. I. pigment yellow 185, has a high color development property, and is superior in light resistance. The yellow toner has toner particles containing at least a binder resin, a wax, and a colorant, wherein the yellow toner contains C.I.Type: GrantFiled: March 6, 2013Date of Patent: April 26, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
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Patent number: 9250555Abstract: Provided is a charging roll, including a core body, and an elastic layer that is disposed on an outer circumferential surface of the core body, wherein, with respect to an approximation curve that extends an outer curve of the axial direction of the core body of an outer circumferential surface in a region other than both end portions of the outermost layer up to both end portions of the outermost layer, a maximum increase amount of the outer curve in both end portions of the outermost layer is equal to or less than 60 ?m, and wherein a coefficient of friction of the outer circumferential surface at a position showing the maximum increase amount of the outer curve in both end portions of the outermost layer is equal to or less than 0.3, and a variation amount of the coefficient of friction is equal to or less than 30%.Type: GrantFiled: January 21, 2015Date of Patent: February 2, 2016Assignee: FUJI XEROX CO., LTD.Inventors: Yuji Terai, Yohei Saito
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Patent number: 9176407Abstract: The present invention provides a toner that contains an azo pigment well-dispersed in a binder resin and has a satisfactory color tone. The toner contains toner particles each containing a binder resin and a colorant. Each of the toner particles contains a compound having a polyester moiety and a bisazo structure moiety. The colorant is the azo pigment.Type: GrantFiled: November 8, 2012Date of Patent: November 3, 2015Assignee: Canon Kabushiki KaishaInventors: Yuki Hasegawa, Yasuaki Murai, Masatake Tanaka, Takayuki Toyoda, Masashi Kawamura, Waka Hasegawa, Masashi Hirose
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Patent number: 9122182Abstract: Provided is a charge control agent comprising a phenol multimeric mixture of a plurality of phenol multimers of the formula (1).Type: GrantFiled: February 27, 2012Date of Patent: September 1, 2015Assignee: ORIENT CHEMICAL INDUSTRIES CO., LTD.Inventor: Kazuyoshi Kuroda
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Patent number: 9104126Abstract: A method of producing an emissive toner composition including selecting a photoluminescent agent, a charge control agent, and one or more additives and combining the photoluminescent agent, charge control agent, and one or more additives to form an emissive toner composition that when printed to produce an image component on a substrate, the emission spectra of the image component for irradiation with a first excitation energy includes only dominant emission peaks corresponding to one or more dominant emission peaks of the photoluminescent agent. The photoluminescent agent is selected such that it emits light having one or more dominant emission peaks in a first emission spectral region when irradiated with the first excitation energy. The charge control agent and one or more additives are selected such that they do not emit light in the visible spectrum when irradiated with visible light and does not emit light in the first emission spectral region when irradiated with the first excitation energy.Type: GrantFiled: September 16, 2013Date of Patent: August 11, 2015Assignee: Angstrom Technologies, Inc.Inventors: William J. Coyle, Anthony Stramondo
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Patent number: 9056884Abstract: A process for producing a charge control agent comprising an azo-based iron complex salt compound as an effective component, comprises: synthesizing a monoazo compound through diazotization coupling; and ironing the monoazo compound by using an ironizing agent such as ferric chloride to produce an azo-based iron complex salt compound represented by the following formula. The ironization reaction of the monoazo compound is carried out while pH is kept at 7.0 to 8.0. Since the above azo-based iron complex salt compound having high purity can be obtained at a high yield, it can be used as a charge control agent directly and a special purification step can be eliminated, thereby making it possible to greatly cut the production cost.Type: GrantFiled: March 5, 2013Date of Patent: June 16, 2015Assignee: HODOGAYA CHEMICAL CO., LTD.Inventors: Atsushi Takesue, Yoshihiko Abe, Hideyuki Otsuka, Jun Watanabe, Shunsuke Saitoh, Kanae Hiraishi
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Publication number: 20150140487Abstract: The present invention provides a yellow toner having excellent light resistance. The yellow toner includes toner particles, each of which contains a binder resin, a wax, and a colorant. The colorant is a compound represented by Formula (1).Type: ApplicationFiled: June 19, 2013Publication date: May 21, 2015Inventors: Takeshi Sekiguchi, Shosei Mori, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
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Publication number: 20150037725Abstract: A yellow toner is provided which is superior in dispersibility of C. I. pigment yellow 185, has a high color development property, and is superior in light resistance. The yellow toner has toner particles containing at least a binder resin, a wax, and a colorant, wherein the yellow toner contains C.I.Type: ApplicationFiled: March 6, 2013Publication date: February 5, 2015Inventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
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Patent number: 8940467Abstract: A toner is provided that, even in a small amount thereof, gives a satisfactory image density and that is free of image problems, e.g., fogging and offset resistance, even during long-term use and in a high-temperature, high-humidity environment. The toner contains a binder resin, a pigment, and a prescribed azo compound wherein, designating as (A) the solubility of the azo compound in a toluene-hexane solubility test and as (B) the solubility of the binder resin constituting the toner in the toluene-hexane solubility test, the (A) and the (B) satisfy the relationship |(B)?(A)|?60.Type: GrantFiled: February 26, 2013Date of Patent: January 27, 2015Assignee: Canon Kabushiki KaishaInventors: Yasuhiro Hashimoto, Takayuki Toyoda, Masashi Kawamura, Naotaka Ikeda, Hidekazu Fumita, Emi Watanabe, Yuhei Terui
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Publication number: 20150024321Abstract: To provide an azo compound which improves the dispersibility of an azo pigment in a non-water soluble solvent. The purpose is achieved by an azo compound having a specific structure in which a high molecular weight polymer unit is bonded.Type: ApplicationFiled: February 20, 2013Publication date: January 22, 2015Inventors: Masanori Seki, Yuki Hasegawa, Waka Hasegawa, Masashi Kawamura, Taiki Watanabe, Chiaki Nishiura, Takayuki Toyoda, Ayano Mashida, Yasuaki Murai, Masashi Hirose
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Patent number: 8916319Abstract: Provided is a toner manufactured in an aqueous solvent, whereby a satisfactory image density can be obtained and the toner laid-on level on a recording medium can be reduced with a normal added concentration of pigment without adding a large quantity of pigment to the toner. The toner is manufactured in an aqueous medium by the suspension polymerization or dissolution suspension method and contains a binder resin, a pigment and an azo compound. The azo compound is a specific azo compound, and the absolute value of the difference in zeta potential between the binder resin and the azo compound is 25 mV or less.Type: GrantFiled: February 26, 2013Date of Patent: December 23, 2014Assignee: Canon Kabushiki KaishaInventors: Naotaka Ikeda, Takayuki Toyoda, Masashi Kawamura, Hidekazu Fumita, Emi Watanabe, Yasuhiro Hashimoto, Yuhei Terui
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Publication number: 20140370433Abstract: This disclosure relates to a polymerized toner prepared by suspension polymerization. Particularly, this disclosure relates to a polymerized toner that comprises a binder resin, and a pigment, a charge control agent, and wax, which are dispersed in the binder resin, and maintains peak molecular weight (Mn) of the binder resin, the ratio of number average molecular weight/peak molecular weight (Mn/Mp), and gel content (Gel %), and thereby, can realize high glossiness and excellent off set property when printing, and a method for preparing the same.Type: ApplicationFiled: December 5, 2012Publication date: December 18, 2014Applicant: LG CHEM, LTD.Inventors: Wook Jang, Chang-Soon Lee, Joo-Yong Park, Woo-Cheul Jung
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Publication number: 20140308610Abstract: The present invention provides a toner that contains an azo pigment well-dispersed in a binder resin and has a satisfactory color tone. The toner contains toner particles each containing a binder resin and a colorant. Each of the toner particles contains a compound having a polyester moiety and a bisazo structure moiety. The colorant is the azo pigment.Type: ApplicationFiled: November 8, 2012Publication date: October 16, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Yuki Hasegawa, Yasuaki Murai, Masatake Tanaka, Takayuki Toyoda, Masashi Kawamura, Waka Hasegawa, Masashi Hirose
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Publication number: 20140272689Abstract: A magenta toner includes a binder resin including an amorphous resin; a magenta pigment comprising a naphthol pigment; and a release agent. The magenta toner has a glass transition temperature of from 19 to 40° C. The naphthol pigment has an X-ray diffraction pattern having plural peaks in the following range: 0°?2??35° wherein ? is a Bragg angle. The sum of half widths of the respective peaks is from 5 to 10°.Type: ApplicationFiled: February 26, 2014Publication date: September 18, 2014Inventors: Hiroshi YAMASHITA, Masana SHIBA, Tsuyoshi SUGIMOTO, Daisuke ASAHINA, Susumu CHIBA, Satoyuki SEKIGUCHI
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Publication number: 20140255840Abstract: A toner is provided. The toner includes a crystalline polyester resin (A); and a non-crystalline resin (B). The toner has a viscoelastic property such that the loss tangent (tan ?) defined as a ratio (G?/G?) of loss elastic modulus (G?) to storage elastic modulus (G?) has at least an inflection point or a local maximal point at a temperature ? in a temperature range of from 65° C. to 80° C. while having a local maximal point at a temperature ? in a temperature range of from 75° C. to 90° C., wherein the loss tangent at the temperature ? is from 1.2 to 2.0, and the loss tangent at the temperature ? is from 1.0 to 2.5, wherein the temperature ? is lower than the temperature ?.Type: ApplicationFiled: January 29, 2014Publication date: September 11, 2014Inventors: Yoshitaka SEKIGUCHI, Hisashi Nakajima, Masashi Nagayama, Saori Yamada, Shinya Hanatani, Mariko Takii
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Patent number: 8815485Abstract: A compound that can improve azo pigment dispersibility in a non-water-soluble solvent. The compound is represented by formula (1): wherein R1 to R4 represent hydrogen or halogen; R5 to R9 represent hydrogen, COOR17 or CONR18R19, and at least one of R5 to R9 represents COOR17 or CONR18R19, where R17 to R19 represent hydrogen or an alkyl group having 1 to 3 carbons; R10 represents an alkyl group having 1 to 6 carbons or a phenyl group; R11 to R15 represent a hydrogen, L1R20 or L2R21R22, and at least one of R11 to R15 represents L1R20 or L2R21R22, where L1 represents a divalent linking group, L2 represents a trivalent linking group, and R20 to R22 represent an alkyl group having 8 or more carbons or an alkenyl group having 8 or more carbons; and R16 represents an alkyl group having 1 to 6 carbons or a phenyl group.Type: GrantFiled: August 11, 2011Date of Patent: August 26, 2014Assignee: Canon Kabushiki KaishaInventors: Masatake Tanaka, Masashi Kawamura, Yuki Hasegawa, Takayuki Toyoda, Yasuaki Murai, Masashi Hirose, Takeshi Miyazaki
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Patent number: 8815484Abstract: An object of the present invention is to provide a toner having high dispersibility of an azo pigment in a binder resin and a good color tone, having suppressed image fogging and high transfer efficiency, and providing a stable image for a long time. The toner including toner base particles, each of which includes: at least a binder resin, a compound in which a specific bisazo skeleton unit bonds to a specific polymer resin unit, and an azo pigment as a colorant.Type: GrantFiled: October 5, 2012Date of Patent: August 26, 2014Assignee: Canon Kabushiki KaishaInventors: Masatake Tanaka, Masashi Hirose, Takayuki Toyoda, Waka Hasegawa, Yasuaki Murai, Masashi Kawamura, Yuki Hasegawa
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Patent number: 8802340Abstract: The invention provides an electrophotographic toner having at least: a binder resin, a coloring agent, and an alkali metal salt of polyethylene oxide. The invention further provides an electrophotographic developer having the electrophotographic toner, a process cartridge having a developer bearing body which accommodates the electrophotographic developer, and an image forming apparatus having a toner image forming member that forms a toner image on a recording medium by using the electrophotographic developer and a fixing member that fixes the toner image by heating and pressurizing or by photoirradiation. The processing speed in image formation using the image forming apparatus can be about 1,000 mm/sec or more.Type: GrantFiled: July 9, 2008Date of Patent: August 12, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Yasushige Nakamura, Shinichi Yaoi
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Publication number: 20140170553Abstract: The present invention provides a yellow toner having high compatibility of a colorant with a binder resin, having good chroma, and being useful for broadening the green color gamut. The yellow toner contains the binder resin and the colorant, wherein the colorant contains a compound represented by the general formula (1).Type: ApplicationFiled: February 18, 2014Publication date: June 19, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Shosei Mori, Takeshi Sekiguchi, Yuko Katsumoto, Taichi Shintou, Takayuki Ujifusa, Takeshi Miyazaki
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Publication number: 20140162184Abstract: The present disclosure describes a color single component toner with desirable fusing performance.Type: ApplicationFiled: December 12, 2012Publication date: June 12, 2014Applicant: XEROX CORPORATIONInventors: Grazyna E. Kmiecik-Lawrynowicz, Michael F. Zona, Mark E. Mang, Maura A. Sweeney, Robert D. Bayley
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Publication number: 20140134531Abstract: A yellow toner is provided which is much more improved in color development and chroma, and much more improved in light resistance. The yellow toner contains, at least, a binder resin, a wax, and a coloring agent. The coloring agent is a compound represented by the following general formula (1).Type: ApplicationFiled: January 23, 2014Publication date: May 15, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Takeshi Miyazaki
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Patent number: 8685607Abstract: The continuous process for manufacturing toners disclosed herein includes continuously feeding components of a toner composition into a feed section of a screw extruder at a controlled rate. The continuous process for manufacturing toners may include feeding the components of a toner composition into the feed section of a screw extruder without performing an external or secondary dispersion step. That is to say, the components of the toner composition may be fed directly into the extruder without using dispersions of individual components as used in batch processes. Rather, the toner components are added to the extruder in dry form, melt-mixed, and may be dispersed in aqueous form in the extruder. The process may produce micron-sized toner particles, thus no further size reduction may be necessary.Type: GrantFiled: August 29, 2012Date of Patent: April 1, 2014Assignee: Xerox CorporationInventors: Joo T. Chung, Chieh-Min Cheng, Zhen Lai, Mark E. Mang, Eugene F. Young, Brian Andaya, Joseph Leonardo
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Patent number: 8628899Abstract: There is provided an azo compound for improvement in the dispersibility of an azo pigment into a water-insoluble solvent.Type: GrantFiled: August 23, 2011Date of Patent: January 14, 2014Assignee: Canon Kabushiki KaishaInventors: Masashi Kawamura, Yuki Hasegawa, Masatake Tanaka, Takayuki Toyoda, Kei Inoue, Yasuaki Murai, Masashi Hirose, Takeshi Miyazaki
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Patent number: 8623579Abstract: The invention relates to a solid pigment preparation containing A) 5% to 99% by weight of PY 155 and B) 1% to 95% by weight of copolymer containing the following structural units: (i) 1 to 70 mol % of structural unit B1 (ii) 1 to 70 mol % of structural unit B2 (iii) 1 to 70 mol % of structural unit B3Type: GrantFiled: September 22, 2010Date of Patent: January 7, 2014Assignee: Clariant Finance (BVI) LimitedInventors: Jesús Pitarch López, Ulrike Rohr, Kristin Richter, Eusebio Ruiz Fernandez, Ruediger Baur
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Publication number: 20140004459Abstract: The present invention is a toner for developing electrostatic charge image containing a wax derived from a plant cholesterol, an electric charge-controlling agent, a coloring agent and a binding resin. The toner is suited for use in the electromagnetic induction-heated fixing system which is capable of heating the heating member up to a predetermined fixing temperature in a short period of time, makes it possible to maintain images free of irregular luster or fouling for extended periods of time and is, further, suited for being fixed at a low temperature.Type: ApplicationFiled: March 27, 2012Publication date: January 2, 2014Applicant: HODOGAYA CHEMICAL CO., LTD.Inventors: Masaki Okubo, Tasuji Orita, Hideyuki Otsuka, Kenichi Sato, Kanae Hiraishi
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Publication number: 20140004460Abstract: A toner is provided in which low-temperature fixing properties and high-temperature offset resistance can be compatible, and the environmental stability of image density can also be obtained. A toner obtained by condensation polymerization of an alcohol component containing not less than 70 mol % of an aliphatic polyalcohol with a carboxylic acid component, and including a polyester resin having a concentration of an ester group of not less than 25% by mass and not more than 55% by mass, and a compound represented by the following formula (1) as a charge-controlling agent: (wherein A1, A2, and A3 each independently represent H, a nitro group, or a halogen atom; B1 represents H or an alkyl group; M represents an Fe atom, a Cr atom, or an Al atom; X+ represents a H ion, an alkali metal ion, a NH4 ion, an alkylammonium ion, or mixed ions thereof.Type: ApplicationFiled: March 21, 2012Publication date: January 2, 2014Applicant: CANON KABUSHIKI KAISHAInventors: Daisuke Yoshiba, Yoshihiro Ogawa, Kouji Nishikawa, Shigeto Tamura, Naohiko Tsuchida, Masami Fujimoto
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Patent number: 8603711Abstract: To obtain a pigment dispersion and a yellow toner having high coloring power and high dispersibility of a pigment in a dispersion medium, a pigment dispersion containing a compound represented by general formula (1) and a yellow pigment represented by general formula (2) are provided in a dispersion medium.Type: GrantFiled: March 21, 2012Date of Patent: December 10, 2013Assignee: Canon Kabushiki KaishaInventors: Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Kaoru Takahashi, Satoshi Saito, Tomoyuki Noda, Takeshi Miyazaki, Masashi Hirose