By Coalescing Or Aggregating Patents (Class 430/137.14)
  • Patent number: 11891468
    Abstract: Polymers and membranes with acrylamide moieties are disclosed herein. A disclosed copolymer includes first repeat units of an acrylamide moiety and second repeat units of a hydrophobic moiety. The molar ratio of second repeat units:first repeat units is between 0.8:1 to 2.5:1 based on a molar ratio of the respective monomers in a production feed. The disclosed copolymer can also include a crosslinker. The amount of cross-linker in a corresponding monomer feed is 0 to 1 mol %, based on the total monomer in the production feed.
    Type: Grant
    Filed: March 31, 2023
    Date of Patent: February 6, 2024
    Assignee: Dioxycle
    Inventor: Edward Luke Malins
  • Patent number: 11860570
    Abstract: A toner set includes a plurality of toners, wherein the toner set includes a first toner containing a yellow colorant and a second toner containing a cyan colorant, the first toner and the second toner each contain a binder resin containing a vinyl-based resin and a crystalline resin, and a release agent containing a hydrocarbon wax, a content of the vinyl-based resin with respect to a total mass of the binder resin is 50% by mass or more, the first toner contains the crystalline resin having a moiety having a crystal structure and a crystal nucleating agent moiety having a crystal nucleating agent, and the second toner contains the cyan colorant that is a compound represented by general formula (1).
    Type: Grant
    Filed: June 7, 2021
    Date of Patent: January 2, 2024
    Assignee: KONICA MINOLTA, INC.
    Inventors: Hiroshi Nagasawa, Yusuke Takigaura, Takaki Kawamura, Ami Motohashi, Natsuki Ito, Shiro Hirano
  • Patent number: 11762307
    Abstract: A toner having a toner particle containing a binder resin and a styrene-acrylic resin, the toner being characterized in that the styrene-acrylic resin is a graft polymer having an aliphatic hydrocarbon compound segment and a styrene-acrylic segment, the styrene-acrylic segment has a specific monomer unit, the melting point of the styrene-acrylic segment is from 30° C. to 80° C., and when the toner is measured using a FT-IR ATR method, the intensity assigned to the styrene-acrylic resin and the intensity assigned to the binder resin satisfy a specific relationship.
    Type: Grant
    Filed: August 7, 2020
    Date of Patent: September 19, 2023
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Junichi Tamura, Takaho Shibata, Ryuji Murayama, Kenta Mitsuiki, Megumi Shino, Hironori Minagawa
  • Patent number: 11687013
    Abstract: A toner for electrostatic charge image development, wherein a spin-spin relaxation time of the toner at 90° C. is 0.30 msec or more but 1.50 msec or less, and a spin-spin relaxation time of the toner at 50° C. is 0.0185 msec or more but 0.0300 msec or less, the spin-spin relaxation time of the toner at 90° C. and the spin-spin relaxation time of the toner at 50° C. being obtained by Hahn echo method of pulse NMR analysis.
    Type: Grant
    Filed: October 22, 2020
    Date of Patent: June 27, 2023
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiko Sugiyama, Minoru Masuda, Yuka Mizoguchi, Hideki Sugiura
  • Patent number: 11531283
    Abstract: A white toner for electrostatic image development contains white toner particles that contain a binder resin and a white pigment and satisfy condition 1 below: condition 1: a grain size distribution index GSDvL of the white toner particles satisfies formula (1) below, and a ratio of a number of white toner particles having a diameter of 3 ?m or less to a total number of white toner particles is 1% by number or more and less than 6% by number: 1.2?GSDvL(=D84v/D50v)?1.5??formula (1): (in formula (1), D84v is a particle diameter at which a cumulative frequency cumulated from a small diameter side in a volume-based particle size distribution is 84%, and D50v is a particle diameter at which the cumulative frequency cumulated from the small diameter side in the volume-based particle size distribution is 50%).
    Type: Grant
    Filed: August 19, 2021
    Date of Patent: December 20, 2022
    Assignee: FUJIFILM Business Innovation Corp.
    Inventors: Takahiro Yamashita, Tsuyoshi Murakami
  • Patent number: 11467510
    Abstract: Provided is a toner containing a toner particle comprising a binder resin and an organosilicon polymer, wherein the organosilicon polymer contains an organosilicon polymer particle, the organosilicon polymer particle has a structure represented by the following formula (1): R1—SiO3/2??(1) in formula (1), R1 is a C1-4 alkyl group, and in cross-sectional observation of the toner particle by transmission electron microscopy, the organosilicon polymer particle is present in a region extending up to 80% of the distance A from the centroid out of the total distance A from the centroid of the toner particle cross-section to the contour of the cross-section, and the particle diameter of the organosilicon polymer particle is from 10 nm to 200 nm.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: October 11, 2022
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yuhei Terui, Yoshihiro Nakagawa, Junya Asaoka, Yuu Sasano, Koki Inoue, Kenta Katayama
  • Patent number: 11230645
    Abstract: Solutions to the problems of scuffing and chipping of the paint films in high traffic areas and in tight spaces, such as dressing rooms in department stores, where multiple scrapings of the wall paints are created by consumers, clothes hangers, shoes, etc., and hallways and conference rooms in office and other commercial buildings are disclosed. Wax seeded latex polymers admixed with an added wax in architectural compositions and optionally with polyurethane resin are utilized to create paint films that are resistant to scuffing and chipping.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: January 25, 2022
    Assignee: Columbia Insurance Company
    Inventors: Jonathan Dugan, Ashlee Agens, Ed Ament, Glenn Cooper, Johanna Garcia, Jeff Hood, Kevin Lee, Kate O'Connor, Rogina Saad, Marie Saturne, Jeffrey T. Spillane
  • Patent number: 11199786
    Abstract: Methods of making a fluorescent white toner are provided. In embodiments, such a method comprises forming one or more fluorescent latexes which comprise a fluorescent agent, a first type of amorphous resin, and a second type of amorphous resin, wherein the first and second types of amorphous resins are present at a ratio in a range of from 2:3 to 3:2; forming a mixture comprising the one or more fluorescent latexes; a dispersion comprising a white colorant and a surfactant; one or more emulsions which comprise a crystalline resin, the first type of amorphous resin, the second type of amorphous resin; and optionally, a wax dispersion; aggregating the mixture to form particles of a predetermined size; forming a shell over the particles of the predetermined size to form core-shell particles; and coalescing the core-shell particles to form a fluorescent white toner. The fluorescent white toners and methods of using such toners are also provided.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: December 14, 2021
    Assignee: Xerox Corporation
    Inventors: Yu Qi, Judith Vandewinckel, Shigeng Li, Chunliang Lu, Chieh-Min Cheng
  • Patent number: 11098167
    Abstract: Polymer particles excellent in uniform dispersibility and the use thereof are provided. The polymer particles contain a surfactant, and have a coefficient of variation in the volume-based particle diameter distribution in the range from not less than 13.0% to not more than 25.0%. When 15.0 g of water is added to 5.0 g of the polymer particles so as to disperse the polymer particles in the water by performing a dispersion treatment for 60 minutes using an ultrasonic cleaner, and furthermore when an obtained dispersion liquid is put into a centrifuge tube with an inside diameter of 24 mm so as to be centrifuged, by a centrifugal separator, under conditions that K factor is 6943 and a rotating time is 30 minutes to recover a supernatant, a concentration of non-volatile components in the obtained supernatant is less than 3.5 wt. %.
    Type: Grant
    Filed: March 25, 2016
    Date of Patent: August 24, 2021
    Assignee: SEKISUI PLASTICS CO., LTD.
    Inventors: Takashi Goto, Tomoyuki Takahashi, Satoru Matsumoto
  • Patent number: 11078348
    Abstract: A rubber composition for a tennis ball includes a base rubber and a high-flatness filler. The high-flatness filler has an average particle diameter D50 of not less than 1 ?m and not greater than 50 ?m. A degree of flatness DL is not less than 40 and not greater than 200. An amount of the high-flatness filler per 100 parts by weight of the base rubber is not less than 5 parts by weight and not greater than 100 parts by weight. A ratio (E2/E1) of a tensile elastic modulus E2 in a tensile strain range from 70% to 100% to a tensile elastic modulus E1 in a tensile strain range from 10% to 30%, of a vulcanized rubber obtained by vulcanizing the rubber composition, is not less than 0.60 and less than 1.00. The tennis ball includes a hollow core formed from the rubber composition.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: August 3, 2021
    Assignee: SUMITOMO RUBBER INDUSTRIES, LTD.
    Inventors: Takehiko Hyodo, Masanori Taguchi, Kazuyoshi Shiga, Fumiya Suzuki, Hiroaki Tanaka, Kunio Niwa
  • Patent number: 11061344
    Abstract: Provided is a toner including a binder resin and a colorant, wherein the colorant includes Solvent Red 49, and an acid value of the toner is 9.0 mgKOH/g or greater but 30.0 mgKOH/g or less.
    Type: Grant
    Filed: April 6, 2018
    Date of Patent: July 13, 2021
    Assignee: Ricoh Company, Ltd.
    Inventors: Toyoshi Sawada, Kazumi Suzuki, Natsuko Matsushita, Yu Naito
  • 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: 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: 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: 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: 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: 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: 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: 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: 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