Organic Nitrogen Or Organic Phosphorus Compound Adjuvant Patents (Class 430/108.2)
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Publication number: 20120100476Abstract: The present invention relates to a pressure fixing toner which can be fixed at a lower temperature to enable energy-efficient high-speed printing, and a preparation method thereof. The pressure fixing toner comprises: a core which comprises a wax mixture including a wax and a pigment; and a shell which comprises a polymer or copolymer of at least one kind of polymerizable monomer selected from the group consisting of an aromatic vinyl-based monomer, an acrylate-based monomer, a methacrylate-based monomer and a diene-based monomer, and surrounds the core. The content of the wax of the core is 44-93 parts by weight based on 100 parts by weight of the total toner.Type: ApplicationFiled: June 16, 2010Publication date: April 26, 2012Applicant: LG CHEM, LTD.Inventors: Wook Jang, Chang-Soon Lee
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Patent number: 8163450Abstract: A toner including toner particles; and external additives including a fatty acid metal salt having an average primary particle diameter of from 0.5 to 1.5 ?m; a positively chargeable particulate inorganic material; and a negatively chargeable particulate inorganic material. An image forming apparatus including a photoreceptor bearing an electrostatic image, and a center feed developing device configured to develop the electrostatic image with a developer including the toner to form a toner image, and a transfer device configured to transfer the toner image onto a receiving material preferably fed at a speed of from 500 to 1700 mm/s. An image forming method including forming an electrostatic image, developing the electrostatic image with the center feed developing device using the toner to form a toner image, and transferring the toner image onto a receiving material preferably fed at a speed of from 500 to 1700 mm/s.Type: GrantFiled: February 9, 2009Date of Patent: April 24, 2012Assignee: Ricoh Company LimitedInventor: Hiroyuki Kishida
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Patent number: 8137880Abstract: The present disclosure provides blue toners and methods for their production. In embodiments, methods of the present disclosure include systems which may be utilized to predict the color properties of a blue toner, thereby permitting adjustment of the pigment loading and/or toner mass per unit area.Type: GrantFiled: January 20, 2010Date of Patent: March 20, 2012Assignee: Xerox CorporationInventors: Jordan H. Wosnick, Richard P. N. Veregin, Eric Rotberg
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Patent number: 8133647Abstract: A toner formulation is disclosed comprising a binder, an IR absorbing colorant, and one or more infrared transmissive colorants, wherein the colorants are configured to provide a low reflectivity in the visible region of the spectrum and an intermediate reflectivity in the near infrared region of the spectrum when the toner is printed and fused onto paper.Type: GrantFiled: January 29, 2008Date of Patent: March 13, 2012Assignee: Lexmark International, Inc.Inventors: Gary Allen Denton, Cary Patterson Ravitz
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Patent number: 8126369Abstract: The invention provides an image forming apparatus, comprising: an electrophotographic photoreceptor, a charging unit, an exposure unit, a developing unit, a transfer unit, a fixing unit, and a cleaning unit; the electrophotographic photoreceptor having an outermost layer containing a charge transporting material and at least one curable resin selected from the group consisting of a phenol resin, an epoxy resin and a melamine resin, and the toner having an ammonium ion concentration as determined by ion chromatography of from about 50 ppm to about 300 ppm.Type: GrantFiled: February 25, 2009Date of Patent: February 28, 2012Assignee: Fuji Xerox Co., Ltd.Inventor: Susumu Yoshino
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Patent number: 8110329Abstract: A charge controlling agent is provided as a compound in which an amide group is introduced together with a sulfonic group or a derivative thereof. The charge controlling agent is characterized by including at least one compound represented by the chemical formula (2) in which an amide group is introduced together with at least one of a sulfonic group, a sulfonic acid ester, a sulfonic acid salt, and a sulfonic acid halide.Type: GrantFiled: November 8, 2006Date of Patent: February 7, 2012Assignee: Canon Kabushiki KaishaInventors: Akiko Tominaga, Tatsuki Fukui, Takashi Kenmoku, Ako Kusakari, Masato Minami, Tetsuya Yano, Takeshi Ikeda, Norikazu Fujimoto, Atsushi Tani
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Patent number: 8101328Abstract: The present disclosure provides polymer-ionic complexes useful as charge control agents. Such charge control agents may be utilized with toner particles to impart excellent triboelectric charging characteristics to the toner.Type: GrantFiled: February 8, 2008Date of Patent: January 24, 2012Assignee: Xerox CorporationInventors: Timothy L. Lincoln, Timothy J. Key, Robert D. Bayley, Yuhua Tong
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Patent number: 8097389Abstract: The invention provides a color toner for flash fusing containing at least: a binder resin, a colorant, a leuco dye, a developer and a decolorizer. An absorbance of the color toner after photoirradiation at a wavelength of about 900 nm is smaller than an absorbance of the color toner before the photoirradiation at the wavelength of about 900 nm. The invention further provides a method for producing the color toner, a electrostatic image developer comprising the color toner, a process cartridge comprising a developer bearing body which accommodates the electrostatic image developer, and an image forming apparatus to form a toner image by the electrostatic image developer.Type: GrantFiled: July 14, 2008Date of Patent: January 17, 2012Assignee: Fuji Xerox Co., Ltd.Inventor: Yasushige Nakamura
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Patent number: 8097390Abstract: The invention provides an electrophotographic toner containing at least a binder resin and an infrared absorber, the infrared absorber comprising a perimidine-squarylium dye represented by the following Formula (1). The invention further provides an invisible electrophotographic toner containing at least a binder resin and an infrared absorber, the infrared absorber containing at least a perimidine-squarylium dye represented by Formula (1). The invention further provides an electrophotographic developer containing at least the invisible electrophotographic toner. The invention further provides a toner cartridge containing at least the invisible electrophotographic toner. The invention further provides a process cartridge equipped with at least a developer holder and having at least the electrophotographic developer.Type: GrantFiled: August 21, 2009Date of Patent: January 17, 2012Assignee: Fuji Xerox Co., Ltd.Inventor: Kazuhiko Yanagida
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Publication number: 20110300479Abstract: The present invention relates to a toner composition with a broad fusing temperature range and a process for preparing the same. The toner composition according to the present invention creates entanglement between adjacent polymer chains using a non-linear polyester resin having a branch structure, provides elasticity to molten materials by the branch structure when the resin is molten, prevents the molten materials from being transferred to the surface of a roller at a high temperature, and thereby increases the maximum fusing temperature. Therefore, as the average branch number per polyester resin increases, the maximum fusing temperature rises and the fusing temperature range of the toner composition can be widened.Type: ApplicationFiled: August 28, 2009Publication date: December 8, 2011Applicant: EXAX TONER, INCInventors: Eui Joon Choi, Hyun Nam Yoon
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Patent number: 8071268Abstract: The present invention relates to a toner for electrophotography containing a resin binder, a colorant, and a clay-organic complex obtained by intercalating into a smectite clay a quaternary ammonium salt represented by the formula (A): [(R1)3(R2)N]+.X???(A) wherein R1 and R2 are not identical; R1 is an alkyl group, alkenyl group, or alkynyl group, each having 4 to 24 carbon atoms; R2 is an alkyl group, alkenyl group, or alkynyl group, each having 1 to 10 carbon atoms; and X? is an anion. The toner for electrophotography of the present invention is suitably used for, for example, developing a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.Type: GrantFiled: August 3, 2006Date of Patent: December 6, 2011Assignee: Kao CorporationInventors: Eiji Shirai, Satoshi Kunii
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Patent number: 8071267Abstract: A photoconductor that includes, for example, a substrate, an optional ground plane layer, an undercoat layer thereover wherein the undercoat layer contains an aminosilane and a phenol polysulfide, a photogenerating layer, and at least one charge transport layer.Type: GrantFiled: April 29, 2009Date of Patent: December 6, 2011Assignee: Xerox CorporationInventors: Jin Wu, Kathleen M Carmichael, J. Robinson Cowdery-Corvan, David M Skinner, Jean D Van Epps, Jr., Richard A Williams
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Patent number: 8067140Abstract: A toner for developing electrostatic image which has a reduced residual amount of a decomposed product of a polymerization initiator remaining in the toner upon production (mainly an ether component) and an unreacted polymerizable monomer (mainly styrene), less odor produced upon fixing so as to avoid deteriorating surrounding environment, an excellent shelf stability at high temperature upon storing or anti-blocking property, and an excellent printing durability under both N/N environment and H/H environment upon printing is provided. A toner for developing electrostatic image comprising a colored resin particle which is obtained by polymerizing a polymerizable monomer composition containing a polymerizable monomer, a colorant and a charge control resin in an aqueous dispersion medium in the presence of a polymerization initiator, wherein the charge control resin is a quaternary ammonium base containing copolymer having a glass transition temperature “Tg” in the range from 70 to 100° C.Type: GrantFiled: January 30, 2008Date of Patent: November 29, 2011Assignee: Zeon CorporationInventor: Keita Sensui
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Patent number: 8067136Abstract: To provide: a charge control agent having negative chargeability, which contributes to environmental conservation and the like to an increased degree, has high performance (high charge amount, quick rise-up of charge, excellent stability with time, and high environmental stability), and has improved dispersibility; a toner for developing an electrostatic charge image containing the charge control agent; and an image forming method and an image forming apparatus each using the toner for developing an electrostatic charge image. A charge control agent for controlling a charged state of powder, characterized by including one or more units each represented by the following chemical formula (1) in a molecule.Type: GrantFiled: June 9, 2005Date of Patent: November 29, 2011Assignee: Canon Kabushiki KaishaInventors: Tetsuya Yano, Takashi Kenmoku, Tatsuki Fukui, Ako Kusakari, Chieko Mihara
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Patent number: 8062819Abstract: A magenta toner for developing an electrostatic image composed of a binder and a colorant is disclosed. The toner contains a tone controlling agent having a peak of fluorescent spectrum from 380 to 500 nm. An image excellent in light fastness and durability can be obtained and high color reproducibility with sufficient transparency and chromaticness can be realized by the magenta toner.Type: GrantFiled: March 7, 2008Date of Patent: November 22, 2011Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hiroyuki Yasukawa, Mikio Kouyama, Kenji Hayashi, Hiroaki Obata, Natsuko Kusaka
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Publication number: 20110223526Abstract: The invention is to provide a toner with a small difference of charging properties and an excellent cleaning property. The toner includes toner particles of cylindrical bodies.Type: ApplicationFiled: March 8, 2011Publication date: September 15, 2011Applicant: SEIKO EPSON CORPORATIONInventor: Masahiro OKI
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Patent number: 8012659Abstract: An image forming apparatus including a fixing device to fix a toner image on a recording medium including a heat roller and an oil applicator to apply a silicone oil to the heat roller, having a system speed of from 500 to 1700 mm/sec, and using a toner including a binder resin including a crystalline polyester resin and an amorphous polyester resin; a fatty acid amide compound; and a colorant, wherein a ratio (W/R) of a height (W) of a peak at a wavenumber of 1638 cm?1, specific to the fatty acid amide compound, to a height (R) of a peak at a wavenumber of 829 cm?1, specific to the amorphous polyester resin, is from 0.010 to 0.040 in an absorption spectrum obtained by an ATR method (total reflectance method) using a Fourier transform infrared (FT-IR) spectrophotometer.Type: GrantFiled: December 14, 2007Date of Patent: September 6, 2011Assignee: Ricoh Company LimitedInventors: Hyo Shu, Minoru Masuda, Yasuaki Iwamoto, Yasutada Shitara
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Publication number: 20110200930Abstract: A process for making a latex emulsion suitable for use in a toner composition includes contacting at least one polyester resin optionally with an organic solvent to form a resin mixture, adding a primary amine, optionally a surfactant, and deionized water to the mixture.Type: ApplicationFiled: February 18, 2010Publication date: August 18, 2011Applicant: XEROX CORPORATIONInventors: Shigang S. Qiu, Kimberly D. Nosella, Tie Hwee Ng, Santiago Faucher, Fumii Higuchi
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Patent number: 7998647Abstract: An electrostatic image developing toner comprising an amide ester represented by formula (1): wherein R1CO— and R2CO— each independently represents a saturated or unsaturated acyl group having a carbon number of 16 to 24, which may have a hydroxyl group; R3 represents a linear or branched alkyl group having a carbon number of 1 to 3; and R4 represents a linear or branched alkylene group having a carbon number of 1 to 6 or a linear or branched alkenylene group having a carbon number of 2 to 6.Type: GrantFiled: November 8, 2006Date of Patent: August 16, 2011Assignee: Fuji Xerox Co., Ltd.Inventor: Ryuichiro Maeyama
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Publication number: 20110183250Abstract: According to one embodiment, a developing agent includes toner particles containing a coloring agent, a binder resin, and a moisturizing agent, and an additive which is added to the surfaces of the toner particles is provided. The moisturizing agent is added in an amount of from 5 to 20% by weight based on the weight of the toner particles. Further, the developing agent satisfies the following formula (1) C=A×B?10. In the formula (1), A represents the volume average particle diameter of the toner particles (?m), B represents the addition amount of the additive (% by weight), and C represents a coverage factor.Type: ApplicationFiled: December 27, 2010Publication date: July 28, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Hisanobu Ajima
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Publication number: 20110177441Abstract: The present disclosure provides processes for producing images of excellent color fidelity when incorporating a cyan toner with a lower colorant loading in addition to a first cyan toner. In embodiments, the cyan pigmented particles may be cyan emulsion aggregation toners. In accordance with the present disclosure, a pair of cyan toners are matched in color, wherein the color of a first cyan toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second cyan toner, which is lighter than the first cyan toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light cyan toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 500 and 600 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers.Type: ApplicationFiled: January 19, 2010Publication date: July 21, 2011Applicant: Xerox CorporationInventors: Daryl W. Vanbesien, Karen Ann Moffat, Yi Xin Gong, Edul N. Dalal, Jing Wang, Richard P.N. Veregin, Jordan H. Wosnick, Cuong Vong, Valerie M. Farrugia
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Publication number: 20110177442Abstract: The present disclosure provides processes for producing images of excellent color fidelity when incorporating a magenta toner with a lower colorant loading in addition to a first magenta toner. In embodiments, the magenta pigmented particles may be magenta emulsion aggregation toners. In accordance with the present disclosure, a pair of magenta toners are matched in color, wherein the color of a first magenta toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second magenta toner, which is lighter than the first magenta toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable.Type: ApplicationFiled: January 19, 2010Publication date: July 21, 2011Applicant: XEROX CORPORATIONInventors: Daryl W. Vanbesien, Karen Ann Moffat, Yi Xin Gong, Edul N. Dalal, Jing Wang, Richard P.N. Veregin, Jordan H. Wosnick, Cuong Vong, Valerie M. Farrugia
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Publication number: 20110165507Abstract: An erasable toner is prepared by mixing colored particles containing at least a color former compound, a color developer agent and a binder resin with de-coloring particles having a melting point higher than the fixing temperature of the colored particles. By using this toner, a colored image is formed by electrostatically transferring a toner image onto a medium, and heating the toner image at a temperature lower than the melting point of the de-coloring particles to form a fixed toner image in a color developed state, and the color of the fixed image is erased by heating the image to a temperature not lower than the melting point of the de-coloring particles. In this toner, the color developing function and the color erasing function are assigned to different particles so that the functions are separated from each other, and therefore, the formation of an image in a color developed state and the erasure thereof can be reliably and promptly achieved.Type: ApplicationFiled: November 24, 2010Publication date: July 7, 2011Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventors: Tsuyoshi Itou, Takayasu Aoki
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Publication number: 20110159425Abstract: To obtain a toner which has excellent charge rise and stability, tends to have a sharp charge distribution, has excellent pigment dispersion properties, exhibits no disarray in an image even during a high-speed copying operation, and can stably output high-resolution images. A toner comprising toner particle containing a binder resin, a colorant, resin PA, and resin PB, wherein the resin PA has unit A represented by Formula (1), the resin PB has unit B represented by Formula (2), a content “a” of the unit A in the toner particle is 2.00 ?mol/g or more, and a molar ratio b/a of the content “a” and a content “b” of the unit B in the toner particle is 0.10 or more and 10.00 or less.Type: ApplicationFiled: December 20, 2010Publication date: June 30, 2011Applicant: CANON KABUSHIKI KAISHAInventors: Hitoshi Itabashi, Takashi Kenmoku, Harumi Takada
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Publication number: 20110143274Abstract: The present disclosure provides toners and processes for making said toners. In embodiments, the toners are invisible when viewed under natural light, but possess a UV emitter that renders them visible when exposed to UV light of a specific wavelength. By selecting the appropriate UV emitter and utilizing an ionic crosslinker, the gloss of the toner may be tailored to match the gloss of any substrate, such as paper, to which the toner is to be applied, thereby further enhancing its invisibility under visible light.Type: ApplicationFiled: December 10, 2009Publication date: June 16, 2011Applicant: XEROX CORPORATIONInventors: Gabriel Iftime, Jordan H. Wosnick, Eric Rotberg, Cuong Vong, Edward Graham Zwartz, Richard P.N. Veregin, Karen Ann Moffat, Peter M. Kazmaier
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Patent number: 7955773Abstract: A toner for developing an electrostatic image includes a toner particle to which particles of an external additive A having a number average particle diameter of from 7 nm to 200 nm and particles of an external additive B having a number average particle diameter of from 30 nm to 4000 nm have been externally added. The ratio of the number average particle diameter of the particles of the external additive B to the number average particle diameter of the particles of the external additive A is in a range of from 2 to 20. The particles of one of the external additive A or the external additive B are particles having a core material covered with an organic material containing hydrogen and nitrogen. The particles of the other one of the external additive A or the external additive B are SiO2 particles.Type: GrantFiled: February 19, 2009Date of Patent: June 7, 2011Assignee: Fuji Xerox Co., Ltd.Inventors: Motoko Sakai, Masahiro Takagi, Jun Igarashi, Tetsuya Taguchi
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Publication number: 20110129774Abstract: A process for making a resin emulsion suitable for use in forming toner particles including an oil component incorporated into the latex core of the toner particles.Type: ApplicationFiled: December 2, 2009Publication date: June 2, 2011Applicant: XEROX CORPORATIONInventors: Valerie M. Farrugia, Kimberly D. Nosella, Edward Graham Zwartz, Barkev Keoshkerian
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Publication number: 20110123918Abstract: According to one embodiment, a color erasable coloring material containing a binder resin, and dispersed therein, a color developable compound and a color developing agent is provided. The color developing agent to be used in the coloring material contains at least an aminohydroxy derivative. The aminohydroxy derivative is obtained by subjecting a starting material selected from a benzene ring compound having a hydroxy group and a heterocyclic compound having a hydroxy group to nitration, hydrogenation, and alkylation.Type: ApplicationFiled: September 2, 2010Publication date: May 26, 2011Applicant: TOSHIBA TEC KABUSHIKI KAISHAInventor: Motonari Udo
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Patent number: 7943280Abstract: A toner containing a colorant, a binder resin and a laminar inorganic mineral in which part or all of the ions present between layers are modified by organic ions. The toner can be prepared by a method including dispersing or emulsifying a toner constituent mixture liquid containing the colorant, the binder resin and/or a precursor thereof, and the laminar inorganic mineral, in an aqueous medium. The density of the laminar inorganic mineral measured by XPS for the toner surface before (A) and after (B) mixing and kneading satisfies the following relationship: A>B.Type: GrantFiled: March 14, 2007Date of Patent: May 17, 2011Assignee: Ricoh Company, Ltd.Inventors: Osamu Uchinokura, Naohiro Watanabe, Junichi Awamura
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Publication number: 20110104607Abstract: A chemical toner composition that includes at least one curable amorphous resin and at least one sublimation colorant.Type: ApplicationFiled: November 3, 2009Publication date: May 5, 2011Applicant: Xerox CorporationInventors: Yulin WANG, Ke ZHOU, Edward G. ZWARTZ, T. Hwee NG
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Publication number: 20110097659Abstract: A toner including a mother toner particle having a core-shell structure formed of a core containing a binder resin, a coloring agent, and an optional releasing agent, and a shell having a layer thickness of from 0.01 to 2.00 ?m, the core having a softening index of from 60 to 85° C. as measured by a flow tester, and the shell having a thermal hardness of from 0.7 to 1.8 m, and an optional external additive.Type: ApplicationFiled: October 26, 2010Publication date: April 28, 2011Inventors: Hideki Sugiura, Yuka Mizoguchi
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Publication number: 20110091801Abstract: The present disclosure provides toners and methods for their production. In embodiments, the amount of coagulant utilized in producing those toners may be less than amounts currently in use, which may have a beneficial effect by reducing the time for coalescence. Modified waxes may also be utilized which provide excellent gloss and charging characteristics.Type: ApplicationFiled: October 15, 2009Publication date: April 21, 2011Applicant: XEROX CORPORATIONInventors: Mark E. Mang, Grazyna Kmiecik-Lawrynowicz, Maura A. Sweeney, Timothy L. Lincoln
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Publication number: 20110086306Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics. In embodiments, the charge control agents include copolymers formed by an emulsion polymerization process.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: XEROX CORPORATIONInventors: Robert D. Bayley, Yuhua Tong, Timothy L. Lincoln, Grazyna E. Kmiecik-Lawrynowicz, Maura A. Sweeney, Daniel W. Asarese, Susan J. LaFica, Mark E. Mang
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Publication number: 20110086301Abstract: A toner composition that includes at least one low molecular weight amorphous polyester resin, at least one high molecular weight amorphous polyester resin, at least one crystalline polyester resin, at least one wax, at least one biocide and at least one colorant, and wherein the toner composition has a minimum fusing temperature of from about 100° C. to about 125° C.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: XEROX CORPORATIONInventors: Chieh-Min CHENG, Zhen LAI, Zhaoyang OU, Dennis A. MATTISON, JR., Phil DALE, Christopher D. BLAIR, Steven M. MALACHOWSKI, Ryan ACCETTA
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Publication number: 20110086304Abstract: The present disclosure provides toners and methods for their production. In embodiments, the toner may include a core/shell configuration, with a non-crosslinked resin and a crosslinked resin in the core, with a second non-crosslinked resin in the shell, pigment/pigments and a wax possessing both branched and linear carbons.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: Xerox CorporationInventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley
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Publication number: 20110065036Abstract: A toner including: a first binder resin; a colorant; a releasing agent; and a crystalline organic compound, wherein the first binder resin contains an amorphous polyester resin (a) having a polyhydroxycarboxylic acid skeleton derived from optically active monomers in a part of a main chain of the amorphous polyester resin, and the polyhydroxycarboxylic acid skeleton has an optical purity X, calculated on the monomer basis, of 80% or less, and the optical purity X is determined from the equation, Optical Purity X (%)=|X (L-form)?X (D-form)| wherein the crystalline organic compound is any one of a crystalline polyester resin (b) and a crystalline low molecular compound having a melting point of 60° C. to 100° C., and being selected from a group consisting of fatty acid having 16 to 24 carbon atoms, alcohol having 16 to 24 carbon atoms, a fatty acid ester compound, and aliphatic carboxylic acid amide.Type: ApplicationFiled: September 9, 2010Publication date: March 17, 2011Inventors: Ryota Inoue, Akihiro Kotsugai, Yoshihiro Moriya, Akiyoshi Sabu, Shingo Sakashita, Keiko Osaka, Yukiko Nakajima, Yoshitaka Yamauchi, Daiki Yamashita
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Patent number: 7892344Abstract: The invention provides a pigment preparation comprising (a) C.I. Pigment Red 254 with an average particle size d50 of not more than 100 nm; (b) 0.1% to 30% by weight, based on the weight of the PR 254, of one or more dispersants from the group of the unlaked sulfo-containing monoazo dyes; and (c) 0.Type: GrantFiled: July 2, 2009Date of Patent: February 22, 2011Assignee: Clariant Finance (BVI) LimitedInventors: Tanja Reipen, Jens Reichwagen, Lars Schneider, Carsten Plueg, David Blum
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Publication number: 20110027713Abstract: The disclosure provides an electrophotographic toner including a binder resin; and a light absorber, wherein the light absorber includes a metal nanorod and a surfactant covering a surface of the metal nanorod.Type: ApplicationFiled: July 19, 2010Publication date: February 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon-il JUNG, Seung-Jin Oh, Eun-ha Lee
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Publication number: 20110027712Abstract: The present disclosure provides toner compositions able to prevent the formation of mold or bacterial growth during storage. In embodiments, toners may include at least one biocide that prevents the formation of mold and/or bacteria in a toner composition, including any emulsion that may be utilized in forming the toner composition. In embodiments, the biocide may also improve charging characteristics of the toner.Type: ApplicationFiled: July 28, 2009Publication date: February 3, 2011Applicant: XEROX CORPORATIONInventors: Kimberly D. Nosella, Maria N.V. McDougall, Melanie Lynn Davis
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Publication number: 20110014559Abstract: The present disclosure provides violet toners and methods for their production. In embodiments, methods of the present disclosure include systems which may be utilized to predict the color properties of a violet toner, thereby permitting adjustment of the pigment loading and/or target mass per unit area.Type: ApplicationFiled: July 20, 2009Publication date: January 20, 2011Applicant: XEROX CORPORATIONInventors: Jordan H. Wosnick, Suxia Yang, Richard P.N. Veregin, Karen A. Moffat
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Publication number: 20110003695Abstract: The present invention provides a method for obtaining O/W emulsions by emulsifying various to-be-emulsified material without the use of any organic solvent, and drying and making into powder the O/W emulsion. The invention relates to a method for producing an O/W emulsion including after preliminarily dispersing a to-be-emulsified material and an interfacially active organic compound in water, heating the preliminary dispersion to a temperature equal to or higher than the melting point of the to-be-emulsified material and equal to or higher than the phase transition temperature of a self-assembled product of the interfacially active organic compound in the absence of an organic solvent, and performing emulsification under a pressure.Type: ApplicationFiled: February 25, 2009Publication date: January 6, 2011Applicants: HODOGAYA CHEMICAL CO., LTD., NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGYInventors: Masumi Asakawa, Masaki Kogiso, Toshimi Shimizu, Atsushi Kisuno
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Publication number: 20100323289Abstract: The present invention relates to chemical toner compositions comprising a resin and a polymer modified pigment comprising a pigment having attached at least one polymeric group. The polymer modified pigment comprises the reaction product or combination product of a modified pigment comprising the pigment having attached at least one organic group which comprises at least one first functional group, and at least one polymer comprising at least one second functional group.Type: ApplicationFiled: June 16, 2010Publication date: December 23, 2010Inventors: Joseph B. Carroll, Qingling Zhang
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Publication number: 20100316946Abstract: A process for making a self-emulsifying composite suitable for use in forming latex emulsions includes contacting a resin with a solid or highly concentrated surfactant, a solid neutralizing agent in the absence of water and an organic solvent to form a mixture, melt mixing the mixture, and forming a self-emulsifying composite of the melt mixed mixture such as a granule. 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: ApplicationFiled: June 16, 2009Publication date: December 16, 2010Applicant: XEROX CORPORATIONInventors: Santiago Faucher, Rina Carlini, Joo T. Chung, Fumii Higuchi, Shigang Qiu, Allan K. Chen, Edward Graham Zwartz, Michael Steven Hawkins, Brian J. Andaya, Joseph L. Leonardo
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Publication number: 20100310980Abstract: A toner, including a colorant; a binder resin; a release agent; and a fixing supplemental component, wherein the toner has a storage elastic modulus G? (Pa) satisfying the following conditions: 5.0×104<G?<5.0×105 at 80° C. 1.0×104<G?<1.0×105 at 90° C. 5.0×103<G?<5.0×104 at 100° C. 1.0×103<G?<1.0×104 at 120° C. 1.0×103<G?<1.0×104 at 150° C.Type: ApplicationFiled: May 11, 2010Publication date: December 9, 2010Inventors: Tsuyoshi Sugimoto, Naohito Shimota, Hiroshi Yamashita, Satoshi Ogawa, Masana Shiba, Junichi Awamura, Tsuneyasu Nagatomo, Masaki Watanabe
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Publication number: 20100310979Abstract: A process and system for making a resin emulsion suitable for use in forming toner particles including a silicone free anti-foam agent to control foam during formation of a polyester dispersion.Type: ApplicationFiled: June 8, 2009Publication date: December 9, 2010Applicant: Xerox CorporationInventors: Zhaoyang OU, Robert D. BAYLEY, Zhen LAI, Rashid MAHMOOD, David R. KURCEBA, John ABATE, Shigang QIU, Chieh-Min CHENG
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Patent number: 7842445Abstract: A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document, a fluorescent pigment that under normal lighting is masked by the colorant but creates a visible image on the first surface of the a substrate when irradiated by black or ultra-violet light, and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image. In addition, if a solvent is used in an attempt to alter the printed image on the substrate, the dye migrates or diffuses to indicate tampering with the document.Type: GrantFiled: April 26, 2007Date of Patent: November 30, 2010Assignee: Troy Group, Inc.Inventors: Michael R. Riley, Kevin L. Heilman, Carrie A. Gilson, Linda M. Barnum, Bruce Littleton
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Publication number: 20100297546Abstract: Toner particles are provided which may, in embodiments, include a core and a shell. In embodiments, charge control agents may be co-emulsified with a resin utilized to form a shell. The shell may prevent a crystalline resin in the core from migrating to the toner surface. Inclusion of the charge control agent in the shell itself may provide the resulting toner particles with desirable charge characteristics and sensitivity to relative humidity.Type: ApplicationFiled: May 20, 2009Publication date: November 25, 2010Applicant: Xerox CorporationInventors: Ke Zhou, Maria N.V. McDougall, Karen A. Moffat, Richard P.N Veregin, Enno E. Agur
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Publication number: 20100291481Abstract: A toner including: a binder resin containing at least a polyester resin (A) and a polyester resin (B) as main components; a colorant; a release agent; and a graft polymer containing a polyolefin resin and a vinyl resin, wherein the polyester resin (A) is a condensation product resulting from condensation polymerization between an alcohol component containing a dihydric alcohol compound, and a carboxylic acid component containing a rosin compound, and the rosin compound occupies 5% by mass or more of the total amount of the alcohol component and the carboxylic acid component, and wherein the polyester resin (B) is a condensation product resulting from condensation polymerization between an alcohol component containing a dihydric alcohol compound which includes at least an alkylene oxide adduct of a bisphenol compound represented by General Formula (1) below, and a carboxylic acid component:Type: ApplicationFiled: May 11, 2010Publication date: November 18, 2010Inventors: Saori YAMADA, Hisashi Nakajima, Shinya Nakayama, Yohichiroh Watanabe
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Patent number: 7833343Abstract: The invention relates to a pigment preparation containing (a) 50-99 percent by weight of at least one pigment, (b) 1 to 50 percent by weight of an additive based on polyalkylene glycols, and (c) 0 to 10 percent by weight of an auxiliary agent from among the group comprising fillers, fire retardants, preservatives, light-stability agents, pigmentary and non-pigmentary dispersing agents, surfactants, antioxidants, foam inhibitors, resins, and antistatic agents, the percentages being in relation to the total weight of the pigment preparation. The additive that is based on polyalkylene glycols corresponds to formula Z?-[-(AO—)n1—B-T-X—Y]m—Z (1), wherein AO represents a C2-C10 alkyleneoxy unit, B represents a C2-C10 alkylene radical, and T represents —NR—, X represents one of the groups (formula), and Y represents a chemical bond or —NR3—.Type: GrantFiled: September 28, 2007Date of Patent: November 16, 2010Assignee: Clariant Finance (BVI) LimitedInventors: Carsten Plueg, Jesús Pitarch López
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Patent number: 7833684Abstract: A toner having charge control agents which impart excellent triboelectric charging characteristics.Type: GrantFiled: November 14, 2007Date of Patent: November 16, 2010Assignee: Xerox CorporationInventors: Timothy L. Lincoln, Yuhua Tong, Robert D. Bayley