By Coalescing Or Aggregating Patents (Class 430/137.14)
  • Patent number: 10745548
    Abstract: The invention relates to a polypropylene composition (C) comprising: (i) 62 to 85 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO1) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 6.0 to 50.0 g/10 min; (ii) 10 to 30 wt.-%, based on the total weight of the polypropylene composition (C), of a heterophasic propylene copolymer (HECO2) with a melt flow rate MFR2 (230° C.) measured according to ISO 1133 in the range of 0.1 to 5.5 g/10 min; (iii) 5 to 30 wt.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: August 18, 2020
    Assignee: BOREALIS AG
    Inventors: Claudia Kniesel, Pavel Shutov, Susanne Kahlen, Daniela Mileva, Floran Prades
  • Patent number: 10613450
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: April 7, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
  • Patent number: 10606182
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, hot toner slurry is added to an external reactor containing a coolant comprised of previously cooled toner slurry in combination with cooled de-ionized water. The previously cooled toner slurry found in the coolant has the same toner composition as the incoming hot toner slurry. Also, the amount of the coolant in the external reactor is equivalent to the amount of incoming hot toner slurry. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling process results in an improvement to the toner performance especially a decrease in the overall toner usage.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 31, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale
  • Patent number: 10591831
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, hot toner slurry is added to an external reactor containing a coolant comprised of previously cooled toner slurry in combination with cooled de-ionized water. The previously cooled toner slurry found in the coolant has the same toner composition as the incoming hot toner slurry. Also, the amount of the coolant in the external reactor is equivalent to the amount of incoming hot toner slurry. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling process results in an improvement to the toner performance especially a decrease in the overall toner usage.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 17, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale
  • Patent number: 10591833
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 17, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
  • Patent number: 10591832
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, hot toner slurry is added to an external reactor containing a coolant comprised of previously cooled toner slurry in combination with cooled de-ionized water. The previously cooled toner slurry found in the coolant has the same toner composition as the incoming hot toner slurry. Also, the amount of the coolant in the external reactor is equivalent to the amount of incoming hot toner slurry. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling process results in an improvement to the toner performance especially a decrease in the overall toner usage.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 17, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale
  • Patent number: 10591835
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 17, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
  • Patent number: 10591834
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In the crash cooling process, an amount of hot toner slurry is added to an external reactor holding an amount of chilled cooling water, wherein the temperature of the chilled cooling water in the external reactor is from about 8° C. to about 25° C. The amount of the chilled cooling water in the external reactor is about 10% to about 40% lower compared to the amount of the added hot toner slurry. Toner prepared using this crash cooling method is cooled at a rate of less than 0.8° C./min. Polyester toners and polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this crash cooling processes using less water results in an improvement to the toner's print density and usage efficiency.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: March 17, 2020
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Anna Sara McLeland, Rahel Bekru Bogale, Trent Duane Peter
  • Patent number: 10474046
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: November 12, 2019
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
  • Patent number: 10450437
    Abstract: The present invention provides a resin for thermoplastic polyurethane (TPU) yarn using nanosilica and a method for manufacturing a thermoplastic polyurethane yarn using the same, where nanosilica having a particle size of 100 nm or less is added as a thickening agent for improving productivity and glossiness in the production of thermoplastic polyurethane yarns (preferably, mono- or multi-filament yarns using TPU alone), specifically in the production of thin TPU yarns, such as mono-filament TPU yarns having a denier count of 50 to 350 or multi-filament TPU yarns having a denier count of 50 or less without applying a coating of TPU to the surface of polyester or nylon yarns as disclosed in the prior art, thereby securing desired workability and properties and realizing continuous drawing of TPU yarns without thread breakage.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: October 22, 2019
    Inventor: Heedae Park
  • Patent number: 10203620
    Abstract: Toner contains a binder resin, a releasing agent, and a tri- or higher metal salt, wherein the toner has a weight average molecular weight (Mw) of from 7,000 to 10,000, a ratio of the weight average molecular weight (Mw) to a number average molecular weight (Mn) of 5 or less, and an acid value of from 6 mgKOH/g to 12 mgKOH/g, wherein the binder resin is a polyester resin, wherein the releasing agent is a monoester wax.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: February 12, 2019
    Assignee: Ricoh Company, Ltd.
    Inventors: Yu Naito, Kazumi Suzuki, Yoshitaka Yamauchi, Masashi Nagayama, Hisashi Nakajima, Saori Yamada
  • Patent number: 10196533
    Abstract: A hydrophilic pigment dispersant for an inkjet ink includes water and a hydrophilic polyurethane having a weight average molecular weight from 3,000 to 15,000, and an acid number ranging from 50 to 100. The polyurethane is formed from 25 wt % to 70 wt % of a non-aromatic polyisocyanate; 0 wt % to 60 wt % of a polyol having a weight average molecular weight from 500 to 5,000; 0 wt % to 30 wt % of an aromatic diol having a weight average molecular weight ranging from 100 to 1000; 5 wt % to 25 wt % of an acid monomer having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; and 0 wt % to 5 wt % of a polyethyleneoxide compound having a hydroxyl functional group, an amino functional group, or both hydroxyl and amino functional groups; wherein at least one of the polyol or the aromatic diol is present.
    Type: Grant
    Filed: October 31, 2014
    Date of Patent: February 5, 2019
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Tienteh Chen, June Yang, Marcos A. Barreto
  • Patent number: 10162279
    Abstract: Provided is an emulsion that includes a water phase and a resin containing phase. The emulsion is prepared from a mixture comprising water, a surfactant, a resin that includes an acidic moiety, and an organic compound having at least two different moieties. Each of the two moieties have a single functionality or dual functionality. The single functionality and the dual functionality are selected from a capability to neutralize the acidic moiety of the resin, a capability to form a hydrogen bond, or both.
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: December 25, 2018
    Assignee: XEROX CORPORATION
    Inventors: Shigang Qiu, Kathryne S. Brockman, Michael J. D'Amato, Frank Ping Hay Lee
  • Patent number: 10131777
    Abstract: A method produces a composite of a polymer and tungstic acid and/or molybdic acid; and the composite obtained by the method has high transparency and a desired refractive index. This composite contains tungstic acid and/or molybdic acid and a polymer that has a number average molecular weight of 1,000-10,000,000 and an ether bond and/or an ester bond. The content of tungstic acid and/or molybdic acid in the composite is 0.01-95% by weight.
    Type: Grant
    Filed: June 17, 2013
    Date of Patent: November 20, 2018
    Assignee: National University Corporation Kumamoto University
    Inventors: Hirotaka Ihara, Hirokuni Jintoku
  • Patent number: 10108100
    Abstract: The present disclosure relates generally to a method to make a chemically prepared toner that employs a crash cooling process. In particular, the crash cooling process involves the addition of a toner slurry having a temperature between 70° C. and 90° C. to an equivalent amount of cold water having a temperature between 5° C. and 20° C. Polyester and styrene acrylic toners as well as polyester core shell toners having a borax coupling agent between the toner core and toner shell made from this cooling process results in an improvement to the amount of toner waste, thereby achieving a higher toner usage efficiency for an electrophotographic printing system.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: October 23, 2018
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Kasturi Rangan Srinivasan, Rahel Bekru Bogale, Trent Duane Peter, Brian David Munson
  • Patent number: 10031432
    Abstract: According to the present invention, there are provided a process for producing a toner for development of electrostatic images which is capable of suppressing desorption and exposure of a releasing agent therein, and excellent in fusing property, suppression of toner cloud and durability; a process for producing a dispersion, and a kit for producing the dispersion.
    Type: Grant
    Filed: June 13, 2014
    Date of Patent: July 24, 2018
    Assignee: KAO CORPORATION
    Inventors: Hiroshi Mizuhata, Koji Shimokusa
  • Patent number: 9874825
    Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. The aggregated particle slurry is heated, then coalesced by raising the pH. The coalesced particles are homogenized and exit as a coalesced particle slurry. A multi-screw extruder is used for the coalescing. These processes are useful for providing coalesced particles such as toner compositions.
    Type: Grant
    Filed: March 21, 2017
    Date of Patent: January 23, 2018
    Assignee: XEROX CORPORATION
    Inventors: Joo T. Chung, Chieh-Min Cheng, Steven M. Malachowski, Eric Joseph Young, Eric David Godshall, Brian Joseph Marion
  • Patent number: 9874826
    Abstract: A toner, including a binder resin, a release agent, and a colorant, wherein a total amount of hydrocarbon compounds having 33 to 35 carbon atoms in the toner measured by ion attachment mass spectrometry (IAMS) is 40% to 70% in terms of a signal intensity ratio.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: January 23, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideki Sugiura, Mio Kumai
  • Patent number: 9804513
    Abstract: The present disclosure provides processes for producing toners by emulsion aggregation where the resulting toner particles have high pigment loadings and desired circularity. The methods include adding a metal, in embodiments a metal salt, at the beginning of coalescence, which surprisingly speeds the coalescence process and produces toner particles having a desired size and circularity for use in electrophotographic imaging systems.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: October 31, 2017
    Assignee: Xerox Corporation
    Inventors: Daryl Vanbesien, Yixin Gong, Karen A Moffat, Richard P N Veregin, Cuong Vong, Jordan H Wosnick, Suxia Yang
  • Patent number: 9804561
    Abstract: An image forming apparatus includes a body having a port, an image forming section positioned further than the center of the body toward a first side while including an image forming unit that forms an image on a medium by a developer including an additive and a fixing unit that heats and fixes the image onto the medium, a duct extending from the vicinity of the fixing unit to a position further than the center of the body toward a second side, a connecting portion connected to a portion of the duct, which is farthest from the fixing unit, and the port on the second side while being wider than the duct such that a flow velocity of a gas inside the connecting portion is less than that inside the duct, and a moving unit that moves the gas from the fixing unit to the connecting portion through the duct.
    Type: Grant
    Filed: July 13, 2016
    Date of Patent: October 31, 2017
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Masato Mikami
  • Patent number: 9798255
    Abstract: A process is provided comprising forming a phase inversed resin emulsion comprising a resin, water, and an organic solvent, wherein the process excludes subjecting the phase inversed resin emulsion to an organic solvent removal technique, thereby retaining the organic solvent in the phase inversed resin emulsion. The phase inversed resin emulsion may be formed by dissolving a resin in an organic solvent to form a resin mixture; optionally, adding a neutralizing agent to the resin mixture to neutralize acid groups on the resin; and adding a sufficient amount of water to the resin mixture to emulsify and induce phase inversion in the resin mixture. Also provided are processes for preparing particles and processes for preparing toners utilizing the phase inversed resin emulsions.
    Type: Grant
    Filed: June 9, 2016
    Date of Patent: October 24, 2017
    Assignee: Xerox Corporation
    Inventors: Yulin Wang, Shigang S. Qiu, Chieh-Min Cheng, Kathryne S. Brockman
  • Patent number: 9763860
    Abstract: An apparatus and process for forming particles. The apparatus and process employs an intermediate mixer.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: September 19, 2017
    Assignee: The Procter & Gamble Company
    Inventors: Vincent Sodd, Alessandro Corona, III
  • Patent number: 9718970
    Abstract: A nanocomposite includes a core comprising a first polymer, a shell disposed about the core, the shell comprising a sulfonated polyester, the first polymer and sulfonated polyester are different, and a plurality of silver nanoparticles disposed throughout the shell layer.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: August 1, 2017
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Alana Desouza, Sandra J. Gardner
  • Patent number: 9703220
    Abstract: The present invention relates to an image forming method using a yellow toner, a magenta toner, and a cyan toner, in which the yellow toner, the magenta toner, and the cyan toner respectively contain toner base particles containing a binder resin containing an amorphous polyester resin as a main component and a crystalline resin, aluminum, and a colorant, and the concentration of aluminum in the toner base particles of the yellow toner measured by high-frequency inductively coupled plasma emission spectral analysis satisfies a specific relation. According to the present invention, an image forming method and a toner set which can improve the thin paper separation property while maintaining favorable low temperature fixability are provided.
    Type: Grant
    Filed: September 28, 2016
    Date of Patent: July 11, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventors: Shiro Hirano, Noboru Ueda, Kouji Sugama, Junya Onishi, Aya Shirai, Tatsuya Fujisaki
  • Patent number: 9657114
    Abstract: Methods of encapsulating particles (260) in polymer (280, 382, 384) and compositions of matter using such encapsulated particles (260). Methods include mixing particles (260) of one or more materials with one or more initial radical polymerizable monomers (265) and one or more initial charge-generating components (270) to form a first suspension of monomer-wetted particles (260/265/270), mixing the first suspension with an aqueous dispersant medium (275) to form a second suspension, adding one or more initial reaction initiators to at least one of the first suspension and the second suspension, subjecting the second suspension to homogenization sufficient to form a stable submicron emulsion having an aqueous continuous phase (275), and reacting available radical polymerizable monomers (265) of the emulsion to encapsulate the particles (260) in one or more layers of polymer (280, 382, 384) and to incorporate ionic species from available charge-generating components (270).
    Type: Grant
    Filed: July 31, 2009
    Date of Patent: May 23, 2017
    Assignee: Hewlett-Packard Development Company, L.P.
    Inventors: Doris Pik-Yiu Chun, Hou T. Ng
  • Patent number: 9529288
    Abstract: An electrostatic charge image developing toner includes a toner particle containing a binder resin, a release agent, and an inorganic mineral, wherein 80% or more of the entire release agent is present in a portion within 400 nm from the surface of the toner particle and 80% or more of the entire inorganic mineral is present in a portion within 400 nm from the surface of the toner particle.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 27, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Atsushi Sugawara, Kana Yoshida, Tsuyoshi Murakami, Yukiaki Nakamura
  • Patent number: 9470990
    Abstract: A storage to store a dispersion liquid in which particles including a resin are dispersed in a solvent is provided. The storage includes a storage tank to store the dispersion liquid, which is arranged on a passage leading from a dispersion liquid producing device to produce the dispersion liquid to a solvent removing device to remove the solvent from the dispersion liquid; and a pressure adjuster to adjust the pressure of the dispersion liquid in the storage tank to a pressure between the pressure of the dispersion liquid in the dispersion liquid producing device and the pressure of the dispersion liquid in the solvent removing device.
    Type: Grant
    Filed: February 23, 2015
    Date of Patent: October 18, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Taro Araki, Masashi Miyakawa, Toshihiko Usami
  • Patent number: 9416232
    Abstract: A solvent-free emulsification process for making a latex where a high viscosity resin is prepared under pressure is described.
    Type: Grant
    Filed: January 13, 2015
    Date of Patent: August 16, 2016
    Assignee: Xerox Corporation
    Inventors: Ke Zhou, Nan-xing Hu, Guerino G Sacripante
  • Patent number: 9410037
    Abstract: A process for making a crystalline latex suitable for use in a toner by phase inversion emulsification (PIE) where the liquid reagents, such as, organic solvent(s), neutralizing agent and water, are reused from a prior PIE.
    Type: Grant
    Filed: December 5, 2014
    Date of Patent: August 9, 2016
    Assignee: Xerox Corporation
    Inventors: Shigeng Li, Yanjia Zuo, Shigang Qiu, Peter V Nguyen, Chieh-Min Cheng
  • Patent number: 9383666
    Abstract: Toners and processes useful in providing toners suitable for electrophotographic apparatuses, including apparatuses such as digital, image-on-image, and similar apparatuses. In particular, emulsion aggregation toners that comprise toner particles having a core composed of either polyester resin or both styrene-acrylate and polyester resins. These embodiments also comprise a shell disposed over the core, wherein the shell comprises styrene-acrylate resin.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: July 5, 2016
    Assignee: XEROX CORPORATION
    Inventors: David J. W. Lawton, Richard P. N. Veregin, Guerino G. Sacripante, Melanie Lynn Davis, Edward G. Zwartz
  • Patent number: 9372421
    Abstract: In an exemplary embodiment of the invention, a continuous process for rounding conventional toner particles includes forming a conventional toner particle slurry by mixing a dispersant and/or a liquid with dry toner particles, heating the conventional toner particle slurry to a first temperature beyond its glass transition temperature to form a coalesced toner particle slurry, quenching the coalesced toner particle slurry to a second temperature below the glass transition temperature after a residence time has elapsed, and recovering the quenched particle slurry at an outlet wherein the circularity of the conventional toner particles in the quenched toner particle slurry is from approximately 0.940 to 0.999 and the time frame for the heating, quenching and recovering steps is less than 20 minutes.
    Type: Grant
    Filed: November 5, 2014
    Date of Patent: June 21, 2016
    Assignee: XEROX CORPORATION
    Inventors: Steven M. Malachowski, Eric Joseph Young, Linda Jan, Eric David Godshall, Brian J. Marion, Chieh-Min Cheng
  • Patent number: 9354532
    Abstract: A method of producing an electrophotographic toner includes aggregation and fusion steps. The aggregation step includes obtaining aggregates by mixing a first dispersion that contains pigment particles with a second dispersion that contains fine resin particles, and aggregating the pigment particles and the fine resin particles. The fusion step includes fusing the pigment particles and the fine resin particles by heating the aggregates. When the first dispersion is mixed with the second dispersion, the sign of the mean of zeta potential of the pigment particles in the first dispersion is set to be opposite to the sign of the mean of zeta potential of the fine resin particles in the second dispersion. In the first dispersion, the proportion of the pigment particles out of the total, having a sign opposite to the sign of the mean of zeta potential of the pigment particles is 10% or less.
    Type: Grant
    Filed: June 19, 2014
    Date of Patent: May 31, 2016
    Assignees: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Maiko Yoshida, Satoshi Araki, Taishi Takano, Takashi Urabe
  • Patent number: 9346937
    Abstract: The present invention relates to PBS- and silica-based composites, said composites having a high swelling ability. It also relates to a method of preparing said composites, a method of swelling said composites and films obtained by swelling said composites.
    Type: Grant
    Filed: October 16, 2012
    Date of Patent: May 24, 2016
    Assignee: Roquette Freres
    Inventors: Nicolas Jacquel, Rene Saint-Loup, Francoise Fenouillot-Rimlinger, Jean-Pierre Pascault, Alain Rousseau
  • Patent number: 9341968
    Abstract: The disclosure provides a toner composition comprising toner particles with a core and a shell, wherein the core comprises a polyester polymer and a styrene acrylate polymer, and the shell comprises a polyester polymer and, optionally, a styrene acrylate polymer, either or both of which can be the same or different from that in the core.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: May 17, 2016
    Assignee: XEROX CORPORATION
    Inventors: David Lawton, Edward G. Zwartz, Kimberly D. Nosella, Melanie Lynn Davis, Richard P. N. Veregin, Guerino G. Sacripante
  • Patent number: 9334381
    Abstract: Crosslinked organic porous particles are non-swellable in propyl acetate and have a crosslinked organic solid phase and discrete pores dispersed within the crosslinked organic solid phase, which discrete pores are isolated from each other. The discrete pores have an average size greater than or equal to 0.1 ?m and the crosslinked organic porous particles have a mode particle size of at least 3 ?m and up to and including 100 ?m. The discrete pores can contain a marker material.
    Type: Grant
    Filed: November 25, 2013
    Date of Patent: May 10, 2016
    Assignee: EASTMAN KODAK COMPANY
    Inventor: Mridula Nair
  • Patent number: 9329508
    Abstract: The method of manufacturing toners disclosed herein includes a continuous temperature ramp and coalescence process that involves continuously passing toner slurry, such as an aggregated toner slurry, through at least one heat exchanger before being subjected to a cooling step. The heat exchanger is pressurized, so the temperature of the slurry may be increased above the atmospheric boiling point of water without boiling the water component of the slurry. Because of these higher temperatures, the coalescence step can be completed more quickly than in conventional batch processes. More than two heat exchangers may be connected in the coalescence step, yielding multiple ramping/cooling temperature steps, ability to inject components, or recycling heat from the process to reduce energy consumption.
    Type: Grant
    Filed: March 26, 2013
    Date of Patent: May 3, 2016
    Assignee: XEROX CORPORATION
    Inventors: David John William Lawton, David R. Kurceba, Frank Ping-Hay Lee, Daniel McDougall McNeil, Santiago Faucher
  • Patent number: 9304423
    Abstract: An electrostatic charge image developing toner includes toner particles containing an amorphous polyester resin (a1), a crystalline polyester resin (a2), and a styrene-acrylic resin (b) containing 2-carboxyethyl acrylate as a polymerization component.
    Type: Grant
    Filed: August 11, 2014
    Date of Patent: April 5, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Eisuke Iwazaki, Narumasa Sato, Asafumi Fujita, Kotaro Yoshihara, Noriyuki Mizutani, Tomoaki Tanaka
  • Patent number: 9285693
    Abstract: The disclosure describes a process to produce toner with tunable gloss levels comprising a stabilizer to freeze particle growth following aggregation, where the stabilizer does not chelate metal ions.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: March 15, 2016
    Assignee: Xerox Corporation
    Inventors: Yulin Wang, Ke Zhou, Tie Hwee Ng, Edward Graham Zwartz, Cuong Vong, Shigang Qiu
  • Patent number: 9282615
    Abstract: A method for producing an electrophotographic photosensitive member has a charge transporting layer, including preparing a first solution containing a specified first liquid, a charge transporting substance and a binder resin, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer, and a method for producing an organic device has a charge transporting layer, including preparing a first solution containing a specified first liquid and a charge transporting substance, preparing a second solution containing a specified second liquid and water, preparing an emulsion from the first and second solutions, forming the emulsion coating, and heating the coat to form the charge transporting layer are used.
    Type: Grant
    Filed: December 6, 2012
    Date of Patent: March 8, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Keiko Yamagishi, Atsushi Okuda, Kimihiro Yoshimura, Harunobu Ogaki, Yohei Miyauchi, Hiroki Uematsu
  • Patent number: 9267032
    Abstract: A process for making a crystalline latex emulsion suitable for use in toner using phase invention emulsification (PIE) where solvent is reused is presented.
    Type: Grant
    Filed: November 6, 2014
    Date of Patent: February 23, 2016
    Assignee: Xerox Corporation
    Inventors: Shigeng Li, Yanjia Zuo, Shigang Qiu, Peter V Nguyen, Amy A Grillo, Steven M Malachowski, Chieh-Min Cheng
  • Patent number: 9250549
    Abstract: Toners of respective colors of a full-color toner set each contain a binder resin which is polyester resin; and a release agent dispersing aid which is styrene acrylic copolymer resin having at least one of an ?-methylstyrene structure and a styrene structure. The styrene acrylic copolymer resin is contained in an amount of 7 parts by weight to 14 parts by weight with respect to 100 parts by weight of the polyester resin. The full-color toner set has a sum of resistivities of the toners of the respective colors of 410×109 to 510×109 (?·cm).
    Type: Grant
    Filed: March 8, 2013
    Date of Patent: February 2, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shintaro Fukuoka, Tadayuki Sawai, Yoritaka Tsubaki, Keigo Mitamura, Yui Kawano, Keiichi Kikawa
  • Patent number: 9239529
    Abstract: Processes for producing toners are provided. The processes include determining the desired gloss for a given toner, and determining the desired amount of aluminum in the toner to obtain that gloss. Utilizing the processes of the present disclosure, the solids content of an emulsion utilized to produce such a toner, as well as the mixing speed utilized in the aggregation process and the temperature at which aggregation of the toner particles occurs, may then be selected to obtain toner particles possessing the desired amount of aluminum, and thus the desired gloss.
    Type: Grant
    Filed: December 20, 2010
    Date of Patent: January 19, 2016
    Assignee: Xerox Corporation
    Inventors: Kimberly D. Nosella, Daryl W. Vanbesien, Allan K. Chen, Sonja Hadzidedic
  • Patent number: 9229344
    Abstract: Unsaturated polyester resins and processes for making the same are disclosed herein. In particular, the process for making the resin provides resins with improved properties. The unsaturated polyester resins have substantially reduced free fumaric acid as compared to that made from conventional processes. The toner resins are used to prepare toner compositions that have improved performance.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: January 5, 2016
    Assignee: XEROX CORPORATION
    Inventors: Karen A. Moffat, Yulin Wang, Shigang Steven Qiu, John Lawrence Pawlak, Alexander N. Klymachyov, Kevin F. Marcell, Judith M. Vandewinckel, Wafa F. Bashir, Richard P. N. Veregin, Christopher M. Wolfe
  • Patent number: 9223239
    Abstract: Amorphous polyester resins and processes for making the same are disclosed herein. In particular, the process for making the resin provides resins with improved properties. The amorphous polyester resins have substantially reduced free fumaric acid as compared to that made from conventional processes. The toner resins are used to prepare toner compositions the have improved performance.
    Type: Grant
    Filed: April 17, 2014
    Date of Patent: December 29, 2015
    Assignee: XEROX CORPORATION
    Inventors: Karen A. Moffat, Yulin Wang, Shigang Steven Qiu, John Lawrence Pawlak, Alexander N. Klymachyov, Kevin F. Marcell, Judith M. Vandewinckel, Wafa F. Bashir, Richard P. N. Veregin, Christopher M. Wolfe
  • Patent number: 9182691
    Abstract: Processes for continuously coalescing particles from an aggregated particle slurry are disclosed. An aggregated particle slurry is further heated in a first heat exchanger, and the heated slurry then flows through a residence time reactor. The slurry, now containing coalesced particles, then flows through a second heat exchanger and is quenched. The recovered coalesced particle slurry is then suitable for washing and drying. No moving parts are needed in this system.
    Type: Grant
    Filed: October 18, 2013
    Date of Patent: November 10, 2015
    Assignee: Xerox Corporation
    Inventors: David John William Lawton, David R. Kurceba, Edward Graham Zwartz, Daniel McDougall McNeil
  • Patent number: 9176404
    Abstract: Regarding a method for manufacturing an electrostatic latent image developing toner, which includes a process for aggregating particulates of components such as a binder resin, a colorant, and a releasing agent, a dispersion solution of binder resin particulates obtained by a specific method is used. The dispersion solution of the binder resin particulates are prepared as an oil-in-water emulsion containing particulates including the binder resin by mixing the binder resin, which is polyester resin, in a molten state with an organic base in a liquid state so as to neutralize the binder resin and subsequently mixing a resin molten solution with water. The amount of use of the organic base is 6 parts by mass or more with respect to 100 parts by mass of the binder resin. The degree of neutralization of the binder resin neutralized by the organic base is 100% or more.
    Type: Grant
    Filed: December 10, 2013
    Date of Patent: November 3, 2015
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Ryotaro Komada
  • Patent number: 9152066
    Abstract: A toner, including: a binder resin; releasing agent-encapsulating capsules; and a colorant, wherein the releasing agent-encapsulating capsules each include: a capsule formed of a resin (I) which is different from the binder resin; and a releasing agent (RA) which is encapsulated in the capsule, and the releasing agent-encapsulating capsules exist in the binder resin, and wherein 50% to 100% of the releasing agent-encapsulating capsules exist in a region from a surface of the toner to a depth of 0.10 times a volume-average particle diameter of the toner.
    Type: Grant
    Filed: March 11, 2013
    Date of Patent: October 6, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Inoue, Hiroaki Katoh, Masahiro Seki, Shun Saito, Yoshitaka Sekiguchi, Yoshihiro Mikuriya, Kazuoki Fuwa, Satoshi Ogawa, Tomohiro Fukao, Takayuki Nakamura
  • Patent number: 9134635
    Abstract: A method for the continuous aggregation of pre-toner particles including continuously flowing a slurry that includes at least one resin, and optionally includes other components used in forming aggregated pre-toner particles, or continuously flowing individual dispersions of the components of the slurry, into a reactor. The reactor includes a cylinder with a cylindrical channel, a mixing shaft located in the cylindrical channel, a longitudinal axis of the mixing shaft is substantially parallel to a longitudinal axis of the cylinder, at least one blade that has a plurality of holes is attached to the mixing shaft. The slurry or the dispersions are continuously mixed to form aggregated pre-toner particles.
    Type: Grant
    Filed: April 14, 2014
    Date of Patent: September 15, 2015
    Assignee: XEROX CORPORATION
    Inventors: David J. Lawton, David T. Borbely
  • Patent number: 9122179
    Abstract: A method of forming toner particles includes aggregating a mixture of a latex, a wax, and an optional pigment to form pre-toner particles, and coalescing the pre-toner particles at a substantially constant target temperature selected within a range from about the glass transition temperature of the pre-toner particles to about 75° C., thereby creating toner particles having a substantially constant particle size distribution during the coalescing step.
    Type: Grant
    Filed: August 21, 2013
    Date of Patent: September 1, 2015
    Assignee: XEROX CORPORATION
    Inventors: Jay Lee Schneider, Abdisamed Sheik-Qasim, Randy Pheav Tin, Christopher Michael Wolfe, Richard Philip Nelson Veregin, Mark Elliott, Melanie Davis, Cuong Vong, Shigang Steven Qiu
  • Patent number: 9104123
    Abstract: A washing process using one or more ionic liquids (ILs) as a washing aid agent for toners, including toners produced using such ILs, such as, low melt toners, is provided. ILs are environmentally sound, green solvents that act to swell toner particle surfaces so that surface absorbed and adsorbed pollutants, such as, surfactants and other manufacturing reactants, can be effectively removed. The resulting toners have good charging, charge maintenance and RH sensitivity.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: August 11, 2015
    Assignee: Xerox Corporation
    Inventors: Zhen Lai, Chieh-Min Cheng, Zhaoyang Ou