Azo Containing Adjuvant Patents (Class 430/108.23)
  • Patent number: 10481513
    Abstract: 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: Grant
    Filed: January 7, 2019
    Date of Patent: November 19, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kenshi Miyajima, Kouji Sugama
  • Patent number: 10394149
    Abstract: 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: Grant
    Filed: May 18, 2016
    Date of Patent: August 27, 2019
    Assignee: Kao Corporation
    Inventors: Tomohide Yoshida, Shoichi Murata, Manabu Suzuki, Eiji Shirai
  • Patent number: 10078282
    Abstract: 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: Grant
    Filed: August 7, 2015
    Date of Patent: September 18, 2018
    Assignee: Xerox Corporation
    Inventors: Guerino G. Sacripante, Ke Zhou, Michael S. Hawkins, Edward G. Zwartz
  • Patent number: 9996018
    Abstract: 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: Grant
    Filed: August 30, 2016
    Date of Patent: June 12, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventors: Haruko Kubo, Yu Yoshida, Yuhei Terui, Hitoshi Itabashi
  • Patent number: 9971259
    Abstract: 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: Grant
    Filed: May 28, 2015
    Date of Patent: May 15, 2018
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Yoko Tamura, Tadahiro Ozawa, Akifumi Kondo
  • Patent number: 9933720
    Abstract: 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: Grant
    Filed: January 9, 2017
    Date of Patent: April 3, 2018
    Assignee: KONICA MINOLTA, INC.
    Inventors: Takanari Kayamori, Masaharu Matsubara, Naoya Tonegawa, Kouji Sekiguchi, Atsushi Iioka
  • Patent number: 9823594
    Abstract: 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: Grant
    Filed: October 17, 2016
    Date of Patent: November 21, 2017
    Assignee: Angstrom Technologies, Inc.
    Inventors: William J. Coyle, Anthony Stramondo
  • Patent number: 9825288
    Abstract: 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: Grant
    Filed: July 2, 2014
    Date of Patent: November 21, 2017
    Assignees: Jiangsu Huadong Institute of Li-ion Battery Co. Ltd., Tsinghua University
    Inventors: Qing-Wei Cui, Jian-Jun Li, Xiang-Ming He, Jiang Cao, Li Wang, Zhong-Jia Dai
  • Patent number: 9804518
    Abstract: 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: Grant
    Filed: November 11, 2015
    Date of Patent: October 31, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Akira Matsumoto, Shinya Nakashima, Masaki Iwase
  • Patent number: 9733586
    Abstract: 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: Grant
    Filed: February 8, 2016
    Date of Patent: August 15, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kousaku Yoshimura, Tomohiro Shinya, Kiyohiro Yamanaka, Shinpei Takagi
  • Patent number: 9625845
    Abstract: 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: Grant
    Filed: April 24, 2014
    Date of Patent: April 18, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventors: Ayano Mashida, Yasuaki Murai, Waka Hasegawa, Masanori Seki, Takayuki Toyoda, Masashi Kawamura, Chiaki Nishiura, Yuki Tsujii, Taiki Watanabe, Masashi Hirose
  • Patent number: 9618867
    Abstract: 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: Grant
    Filed: February 16, 2016
    Date of Patent: April 11, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Takayuki Toyoda, Yasuaki Murai, Waka Hasegawa, Masanori Seki, Chiaki Nishiura, Yuki Tsujii, Ayano Mashida, Masashi Hirose
  • Patent number: 9605378
    Abstract: 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: Grant
    Filed: December 1, 2014
    Date of Patent: March 28, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Tsuyoshi Asami, Tsuneo Kurotori, Takeo Yamaguchi, Noriaki Okada
  • Patent number: 9593243
    Abstract: 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: Grant
    Filed: August 26, 2014
    Date of Patent: March 14, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuki Tsujii, Yasuaki Murai, Takayuki Toyoda, Waka Hasegawa, Masanori Seki, Chiaki Nishiura, Masashi Kawamura, Masashi Hirose, Ayano Mashida
  • Patent number: 9523935
    Abstract: 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: Grant
    Filed: February 17, 2016
    Date of Patent: December 20, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaki Iwase, Akira Matsumoto
  • Patent number: 9470997
    Abstract: 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: Grant
    Filed: August 10, 2015
    Date of Patent: October 18, 2016
    Assignee: Angstrom Technologies, Inc.
    Inventors: William J. Coyle, Anthony Stramondo
  • Patent number: 9360780
    Abstract: 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: Grant
    Filed: March 7, 2014
    Date of Patent: June 7, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Kazumi Suzuki, Yoshitaka Yamauchi
  • Patent number: 9342029
    Abstract: 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: Grant
    Filed: September 29, 2015
    Date of Patent: May 17, 2016
    Assignees: Kabushiki Kaisha Toshiba, Toshiba TEC Kabushiki Kaisha
    Inventor: Sunao Tabata
  • Patent number: 9323168
    Abstract: 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: Grant
    Filed: March 6, 2013
    Date of Patent: April 26, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
  • Patent number: 9250555
    Abstract: 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: Grant
    Filed: January 21, 2015
    Date of Patent: February 2, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Yuji Terai, Yohei Saito
  • Patent number: 9176407
    Abstract: 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: Grant
    Filed: November 8, 2012
    Date of Patent: November 3, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yuki Hasegawa, Yasuaki Murai, Masatake Tanaka, Takayuki Toyoda, Masashi Kawamura, Waka Hasegawa, Masashi Hirose
  • Patent number: 9122182
    Abstract: Provided is a charge control agent comprising a phenol multimeric mixture of a plurality of phenol multimers of the formula (1).
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: September 1, 2015
    Assignee: ORIENT CHEMICAL INDUSTRIES CO., LTD.
    Inventor: Kazuyoshi Kuroda
  • Patent number: 9104126
    Abstract: 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: Grant
    Filed: September 16, 2013
    Date of Patent: August 11, 2015
    Assignee: Angstrom Technologies, Inc.
    Inventors: William J. Coyle, Anthony Stramondo
  • Patent number: 9056884
    Abstract: 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: Grant
    Filed: March 5, 2013
    Date of Patent: June 16, 2015
    Assignee: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Atsushi Takesue, Yoshihiko Abe, Hideyuki Otsuka, Jun Watanabe, Shunsuke Saitoh, Kanae Hiraishi
  • Publication number: 20150140487
    Abstract: 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: Application
    Filed: June 19, 2013
    Publication date: May 21, 2015
    Inventors: Takeshi Sekiguchi, Shosei Mori, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
  • Publication number: 20150037725
    Abstract: 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: Application
    Filed: March 6, 2013
    Publication date: February 5, 2015
    Inventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Yuko Katsumoto, Takayuki Ujifusa, Takeshi Miyazaki
  • Patent number: 8940467
    Abstract: 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: Grant
    Filed: February 26, 2013
    Date of Patent: January 27, 2015
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yasuhiro Hashimoto, Takayuki Toyoda, Masashi Kawamura, Naotaka Ikeda, Hidekazu Fumita, Emi Watanabe, Yuhei Terui
  • Publication number: 20150024321
    Abstract: 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: Application
    Filed: February 20, 2013
    Publication date: January 22, 2015
    Inventors: Masanori Seki, Yuki Hasegawa, Waka Hasegawa, Masashi Kawamura, Taiki Watanabe, Chiaki Nishiura, Takayuki Toyoda, Ayano Mashida, Yasuaki Murai, Masashi Hirose
  • Patent number: 8916319
    Abstract: 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: Grant
    Filed: February 26, 2013
    Date of Patent: December 23, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Naotaka Ikeda, Takayuki Toyoda, Masashi Kawamura, Hidekazu Fumita, Emi Watanabe, Yasuhiro Hashimoto, Yuhei Terui
  • Publication number: 20140370433
    Abstract: 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: Application
    Filed: December 5, 2012
    Publication date: December 18, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Wook Jang, Chang-Soon Lee, Joo-Yong Park, Woo-Cheul Jung
  • Publication number: 20140308610
    Abstract: 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: Application
    Filed: November 8, 2012
    Publication date: October 16, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yuki Hasegawa, Yasuaki Murai, Masatake Tanaka, Takayuki Toyoda, Masashi Kawamura, Waka Hasegawa, Masashi Hirose
  • Publication number: 20140272689
    Abstract: 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: Application
    Filed: February 26, 2014
    Publication date: September 18, 2014
    Inventors: Hiroshi YAMASHITA, Masana SHIBA, Tsuyoshi SUGIMOTO, Daisuke ASAHINA, Susumu CHIBA, Satoyuki SEKIGUCHI
  • Publication number: 20140255840
    Abstract: 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: Application
    Filed: January 29, 2014
    Publication date: September 11, 2014
    Inventors: Yoshitaka SEKIGUCHI, Hisashi Nakajima, Masashi Nagayama, Saori Yamada, Shinya Hanatani, Mariko Takii
  • Patent number: 8815484
    Abstract: 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: Grant
    Filed: October 5, 2012
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masatake Tanaka, Masashi Hirose, Takayuki Toyoda, Waka Hasegawa, Yasuaki Murai, Masashi Kawamura, Yuki Hasegawa
  • Patent number: 8815485
    Abstract: 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: Grant
    Filed: August 11, 2011
    Date of Patent: August 26, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masatake Tanaka, Masashi Kawamura, Yuki Hasegawa, Takayuki Toyoda, Yasuaki Murai, Masashi Hirose, Takeshi Miyazaki
  • Patent number: 8802340
    Abstract: 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: Grant
    Filed: July 9, 2008
    Date of Patent: August 12, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Yasushige Nakamura, Shinichi Yaoi
  • Publication number: 20140170553
    Abstract: 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: Application
    Filed: February 18, 2014
    Publication date: June 19, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shosei Mori, Takeshi Sekiguchi, Yuko Katsumoto, Taichi Shintou, Takayuki Ujifusa, Takeshi Miyazaki
  • Publication number: 20140162184
    Abstract: The present disclosure describes a color single component toner with desirable fusing performance.
    Type: Application
    Filed: December 12, 2012
    Publication date: June 12, 2014
    Applicant: XEROX CORPORATION
    Inventors: Grazyna E. Kmiecik-Lawrynowicz, Michael F. Zona, Mark E. Mang, Maura A. Sweeney, Robert D. Bayley
  • Publication number: 20140134531
    Abstract: 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: Application
    Filed: January 23, 2014
    Publication date: May 15, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Shosei Mori, Takeshi Sekiguchi, Taichi Shintou, Takeshi Miyazaki
  • Patent number: 8685607
    Abstract: 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: Grant
    Filed: August 29, 2012
    Date of Patent: April 1, 2014
    Assignee: Xerox Corporation
    Inventors: Joo T. Chung, Chieh-Min Cheng, Zhen Lai, Mark E. Mang, Eugene F. Young, Brian Andaya, Joseph Leonardo
  • Patent number: 8628899
    Abstract: There is provided an azo compound for improvement in the dispersibility of an azo pigment into a water-insoluble solvent.
    Type: Grant
    Filed: August 23, 2011
    Date of Patent: January 14, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Masashi Kawamura, Yuki Hasegawa, Masatake Tanaka, Takayuki Toyoda, Kei Inoue, Yasuaki Murai, Masashi Hirose, Takeshi Miyazaki
  • Patent number: 8623579
    Abstract: 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 B3
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: January 7, 2014
    Assignee: Clariant Finance (BVI) Limited
    Inventors: Jesús Pitarch López, Ulrike Rohr, Kristin Richter, Eusebio Ruiz Fernandez, Ruediger Baur
  • Publication number: 20140004460
    Abstract: 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: Application
    Filed: March 21, 2012
    Publication date: January 2, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Daisuke Yoshiba, Yoshihiro Ogawa, Kouji Nishikawa, Shigeto Tamura, Naohiko Tsuchida, Masami Fujimoto
  • Publication number: 20140004459
    Abstract: 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: Application
    Filed: March 27, 2012
    Publication date: January 2, 2014
    Applicant: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Masaki Okubo, Tasuji Orita, Hideyuki Otsuka, Kenichi Sato, Kanae Hiraishi
  • Patent number: 8603711
    Abstract: 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: Grant
    Filed: March 21, 2012
    Date of Patent: December 10, 2013
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yutaka Tani, Masao Nakano, Takayuki Ujifusa, Taichi Shintou, Kaoru Takahashi, Satoshi Saito, Tomoyuki Noda, Takeshi Miyazaki, Masashi Hirose
  • Publication number: 20130323636
    Abstract: The present disclosure is drawn to an electrostatic ink composition comprising: (a) a carrier liquid; (b) particles comprising: (i) a polymer having a melt flow rate of less than 60 g/10 minutes, (ii) a colorant, (c) a charge director, wherein the electrostatic ink composition excludes a positively charged organic molecule or an organic molecule capable of becoming a positively charged organic molecule during an electrostatic printing process. Also disclosed herein is a method of producing a electrostatic ink composition and a method of electrophotographic printing an electrostatic ink composition.
    Type: Application
    Filed: March 30, 2011
    Publication date: December 5, 2013
    Applicant: Hewlett-Packard Indigo B.V.
    Inventors: Gil Bar-Haim, Eyal Bodinger, Albert Teishev, Marc Klein, Alexey Kabalnov, Guang Jin Li
  • Patent number: 8597865
    Abstract: An electrostatic-image-developing toner includes a polyester resin; two or more pigments; a polyethylene wax; and a polyolefin-polyvinyl-based graft copolymer, and satisfies the relationship represented by the following equation (1): 0.2?wd/wp?5.0??(1) wherein wp represents a total content (wt. %) of the pigments, and wd represents a content (wt. %) of the polyolefin-polyvinyl-based graft copolymer.
    Type: Grant
    Filed: February 3, 2010
    Date of Patent: December 3, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Daisuke Ishizuka, Shinichi Yaoi, Yasushige Nakamura
  • Patent number: 8592112
    Abstract: An orange toner including a binder resin containing a polyester resin having a dodecenyl succinic acid structure as a constituent unit; and C.I. Pigment Orange 38 in a blending amount of from 5% by mass to 18% by mass relative to the whole mass of the toner and a toner storage container for storing the same, an orange developer and a process cartridge for storing the same, a color toner set, and an image forming apparatus.
    Type: Grant
    Filed: March 25, 2011
    Date of Patent: November 26, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Satoshi Yoshida, Akira Matsumoto, Masanobu Ninomiya, Yusuke Ikeda
  • Patent number: 8563627
    Abstract: A process for making a self-emulsifying granule suitable for use in forming latex emulsions includes contacting a resin with a solid or highly concentrated surfactant, a solid neutralization agent and water in the absence of an organic solvent to form a mixture, melt mixing the mixture, and forming self-emulsifying granules of the melt mixed mixture. Self-emulsifying granules are also provided and configured to form a latex emulsion when added to water, which may then be utilized to form a toner.
    Type: Grant
    Filed: July 30, 2009
    Date of Patent: October 22, 2013
    Assignee: Xerox Corporation
    Inventors: Santiago Faucher, Joo T. Chung, Shigang Qiu, Fumii Higuchi
  • Publication number: 20130260296
    Abstract: An electrostatic latent image developer contains: an electrostatic-latent-image-developing toner that has toner particles formed by aggregating and fusing particles of a polyester resin, particles of a styrene resin and particles of a coloring agent in a starting material dispersion liquid of those particles dispersed in an aqueous solvent; and a carrier having a core particle and a resin coating layer to coat the surface of the core particle, wherein the ratio of the exposed area of the core particle to the surface of the carrier is about 7% or less.
    Type: Application
    Filed: July 16, 2012
    Publication date: October 3, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Norihito FUKUSHIMA, Manabu SERIZAWA