Dry Toner With Chemically Identified Adjuvant (e.g., Charge Control Agent, Colorant, Etc.) Patents (Class 430/108.1)
  • Patent number: 10427985
    Abstract: A ceramic composite material comprises a ceramic compound, a plurality of shaping particles dispersed in the ceramic compound, and a plurality void spaces dispersed in the ceramic compound. The plurality of shaping particles are contained within the plurality of void spaces, and each of the plurality of void spaces is a closed cell. The plurality of shaping particles also comprise nanostructures have a length to diameter ratio of less than or equal to 10 to 1 and a length of less than or equal to 500 nanometers.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: October 1, 2019
    Assignee: Lockheed Martin Corporation
    Inventors: Daniel H. Hecht, Antonio P. De La Garza, III
  • Patent number: 10338487
    Abstract: A toner including: a toner particle including a toner base particle containing a binder resin, and an organosilicon condensate present on a surface of the toner base particle, wherein a charge attenuation constant of the toner is 3.5×10?3 or more to 1.0×100 or less.
    Type: Grant
    Filed: May 8, 2018
    Date of Patent: July 2, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kenta Kamikura, Kunihiko Nakamura, Maho Tanaka, Fumiya Hatakeyama
  • Patent number: 10324391
    Abstract: The present invention provides means for improving the softening rate in photoirradiation and image fixation property. The toner according to the present invention includes an azobenzene derivative represented by the following chemical formula (1), and in the chemical formula (1), R1 to R10 in the following are groups defined in claim 1.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: June 18, 2019
    Assignee: KONICA MINOLTA, INC.
    Inventors: Seijiro Takahashi, Hidekazu Kawasaki
  • Patent number: 10259944
    Abstract: Provided is an external additive for toner, which is suitable for producing a toner having excellent storage stability and chargeability. A silica fine powder suitable for being added to the external additive for toner is also provided. The silica fine powder has a specific surface area of 15 m2/g or more and 90 m2/g or less, a loose bulk density of 0.09 g/cm3 or more and 0.18 g/cm3 or less, a carbon content of 0.25 wt % or more and 0.90 wt % or less, and a hydrophobicity of 60% or more and 75% or less. It is preferable that a ratio (A)/(B) of the loose bulk density of the silica fine powder after surface treatment (A) to a loose bulk density of the silica fine powder before the surface treatment (B) be 1.05 or more and 1.60 or less.
    Type: Grant
    Filed: July 24, 2015
    Date of Patent: April 16, 2019
    Assignee: DENKA COMPANY LIMITED
    Inventors: Shuji Sasaki, Junya Nitta, Takahisa Mizumoto
  • Patent number: 10216109
    Abstract: An electrostatic latent image developing toner includes a plurality of toner particles each including a toner core and a shell layer covering a surface of the toner core. The shell layer contains a hydrophobic thermoplastic resin and a positively chargeable hydrophilic water-insoluble resin. An existing amount A of alkali metal elements present in a surface layer of the shell layer measured by X-ray photoelectron spectroscopy and an existing amount B of alkali metal elements present in a toner particle as a whole measured by fluorescent X-ray analysis satisfy expressions (a) and (b) shown below A?300 ppm??(a) 0.5?A/B<1.0??(b).
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: February 26, 2019
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Jun Hioki
  • Patent number: 10216106
    Abstract: A method for producing a toner includes a step (1) of forming resin microparticles in an aqueous medium in the presence of a surfactant, a step (2) of aggregating the resin microparticles to form aggregated particles, and a step (3) of heating and the aggregated particles and allowing the aggregated particles to coalesce to form toner particles, in which a resin component in the resin microparticles contains an olefinic copolymer and resin A, the resin A has an acid value of 1 mgKOH/g or more and 50 mgKOH/g or less, the resin A has a SP value of 19.0 (J/cm3)0.5 or more and 21.0 (J/cm3)0.5 or less, and the resin component has an olefinic copolymer content of 50% by mass or more with respect to the total mass of the resin component.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: February 26, 2019
    Assignee: Canon Kabushiki Kaisha
    Inventors: Tomoyo Miyakai, Junichi Tamura, Hayato Ida, Takaho Shibata, Kouichirou Ochi, Yuya Chimoto, Ryuji Murayama, Daisuke Yamashita, Akemi Watanabe, Takashi Hirasa
  • Patent number: 10202518
    Abstract: Provided are an elastomer composition including epoxy resin, acrylate resin, an organic filler, an inorganic filler, a cross linking agent, a hardener, an initiator and a solvent, and a magnetic ferrite for a wireless power transmitting and receiving device, the magnetic ferrite being coated with the elastomater composition having an elastic restoring force not to be damaged by a physical impact applied from the outside. According to embodiments of the present invention, the magnetic ferrite having improved impact resistance can be provided by being coating with the elastomer composition having the elastic restoring force, and thus an existing problem such as a reduction in magnetic property caused by damage to the ferrite resulting from an external impact can be solved.
    Type: Grant
    Filed: September 4, 2013
    Date of Patent: February 12, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Soon Young Hyun, Seok Bae, So Yeon Kim, Won Ha Moon, Nam Yang Lee, Hyung Eui Lee
  • Patent number: 10191402
    Abstract: An image forming apparatus for developing an image with developer includes a development part, a transfer part, and a fuser the medium. The developer is configured with a plurality of particles, an average circularity degree of the developer is ranged within 0.955 to 0.970, and a peeling rate (%) of the external additive by a following equation is 30.6% or less, peeling rate (%)=[1?(X/Y)]×100??(1) wherein X is an amount (weight %) of the external additive included in the developer after ultrasonic waves are applied, and Y is an amount (weight %) of the external additive included in the developer before the ultrasonic waves are applied.
    Type: Grant
    Filed: February 17, 2017
    Date of Patent: January 29, 2019
    Assignee: Oki Data Corporation
    Inventor: Yuichi Furukawa
  • Patent number: 10156799
    Abstract: An electrostatic charge image developing toner set includes an electrostatic charge image developing black toner that includes black toner particles including a black colorant, a binder resin, and a release agent, and inorganic particles containing an oil; and an electrostatic charge image developing color toner that includes color toner particles including a color colorant, a binder resin, and a release agent, and inorganic particles containing an oil, wherein a proportion of the release agent exposed to a surface of the color toner particles is greater than a proportion of the release agent exposed to a surface of the black toner particles.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: December 18, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Hiroki Ohmori, Yutaka Saito, Yuka Yamagishi, Fusako Kiyono
  • Patent number: 10126671
    Abstract: The present disclosure provides processes for producing images with toner particles. In embodiments, toner particles of a certain diameter in size are applied to a substrate as an incomplete monolayer, and then fused to form an image that is a complete monolayer and possesses a thickness less than the diameter of the particles utilized to form the image.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: November 13, 2018
    Assignee: XEROX CORPORATION
    Inventors: Richard P. N. Veregin, Eric Rotberg, Edward Graham Zwartz, Suxia Yang, Daryl W. Vanbesien, Cuong Vong, Karen Ann Moffat
  • Patent number: 10126670
    Abstract: Toner particles of a toner each include a toner mother particle and an external additive. The toner mother particle includes a toner core containing a binder resin and a shell layer covering a surface of the toner core. The external additive contains a plurality of first external additive particles each containing a resin. The first external additive particles are present on a surface of the shell layer. The toner core and each of the first external additive particles are bonded together through a covalent bond in the shell layer. The covalent bond includes a first amide bond and a second amide bond. The shell layer contains a vinyl resin. The vinyl resin includes constitutional units (1-1), (1-2), and (1-3). The first amide bond is an amide bond included in the constitutional unit (1-1). The second amide bond is an amide bond included in the constitutional unit (1-2).
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: November 13, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Erika Tanaka
  • Patent number: 10126669
    Abstract: A composite core of a toner particle is a composite of a toner core containing a polyester resin and a plurality of resin particles each containing a first resin. A shell layer partially covering a surface of the composite core is a film containing a second resin. The first resin has a glass transition point that is 10° C. or more higher than a glass transition point of the second resin. The plurality of resin particles each have a particle diameter that is 1.5 times or more greater than a thickness of the shell layer. An amount of the resin particles is at least 0.3 parts by mass and no greater than 2.0 parts by mass relative to 100 parts by mass of the toner cores. The resin particles have a positive zeta potential at pH 4.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: November 13, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Seishi Ojima
  • Patent number: 10048608
    Abstract: Toner particles each have a toner core, a shell layer covering a surface of the toner core, and first resin particles containing a melamine resin. A shell layer coverage is 60% to 80%. The first resin particles each have an embedded portion and a protrusion portion. The embedded portions are embedded beneath the surface of the toner core. The protrusion portions protrude outward from the surface of the toner core in a radial direction of the toner particle. An average value Wd of thicknesses b of the shell layers, a number average value Dp of embedment depths c of the first resin particles, and a number average value Pd of primary particle diameters d of the first resin particles satisfy relations (1) to (3) shown below. 0.2?Dp/Pd?0.8??(1) (Pd?Dp)>Wd??(2) 0.10 ?m?Pd?1.
    Type: Grant
    Filed: November 8, 2017
    Date of Patent: August 14, 2018
    Assignee: KYOCERA Document Solutions Inc.
    Inventor: Toshiki Takemori
  • Patent number: 10007205
    Abstract: Disclosed herein include processes of preparing hybrid toner compositions with toner particles having a core-shell type structure, where the shell contains a non-volatile coalescent agent. More particularly, embodiments relate to processes of preparing styrene acrylate hybrid toner compositions.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: June 26, 2018
    Assignee: XEROX CORPORATION
    Inventors: Richard P N Veregin, Valerie M. Farrugia, Nan-Xing Hu, Sandra J. Gardner
  • Patent number: 9964873
    Abstract: A toner fixable on an image bearer with heat. The toner has a first storage modulus of from 1×103 to 1×106 Pa, measured at 100° C. when being heated, and a second storage modulus of from 1×103 to 1×106 Pa, measured at 100° C. when being cooled, the first storage modulus and second storage modulus being measured by a rheometer, and the second storage modulus at 100° C. when being cooled is higher than the first storage modulus at 100° C. when being heated.
    Type: Grant
    Filed: May 27, 2016
    Date of Patent: May 8, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Hiroshi Yamashita, Minoru Masuda, Hiroshi Yamada, Shizuka Hashida, Masanori Rimoto
  • Patent number: 9958798
    Abstract: There is provided a toner set including a yellow toner, a cyan toner and a magenta toner, the toners each comprising an external additive and colored resin particles comprising a binder resin, a colorant and a charge control agent. An absolute value of an average of q/d for any of the yellow, cyan and magenta toners is expressed by charge amount q (fC) and particle diameter d (?m). It is obtained by measurement using an electric field detachment-type charge amount distribution measurement device. It is in a range of 2.0 to 6.5 fC/10 ?m, and a standard deviation (SD) of q/d is 13 fC/10 ?m or less. A difference between average values of q/d for any two of the yellow, cyan and magenta toners is 2.0 fC/10 ?m or less. A difference (?SD) between standard deviations of q/d for the two toners is 5.0 fC/10 ?m or less.
    Type: Grant
    Filed: March 26, 2015
    Date of Patent: May 1, 2018
    Assignee: ZEON CORPORATION
    Inventors: Hiroshi Nakatani, Takeru Chiba
  • Patent number: 9946179
    Abstract: A toner comprising a binder resin, a crystalline material, and a colorant, wherein, in a cross section image of the toner, when R (?m) is a long axis of the toner, r (?m) is a long axis of a crystalline material domain, domain A is a domain satisfying formula (ii), and domain B is a domain satisfying formula (iii), the toner in which the domain A and the domain B are both present is at least 50 number %; an number average diameter RAvg of the long axis of the toner satisfies formula (i); and a number of domain B per toner cross section of one toner is 20 to 300. 4 ?m?RAvg?12 ?m??(i) 0.125?r/R?0.375??(ii) 0.000625?r/R?0.
    Type: Grant
    Filed: November 29, 2016
    Date of Patent: April 17, 2018
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Satoshi Arimura, Yusuke Hasegawa, Tomohisa Sano, Yoshitaka Suzumura, Takuma Ikejiri
  • Patent number: 9939760
    Abstract: An image forming apparatus includes a recording material feeding portion, an image forming portion, and a heating portion. An ultraviolet irradiating portion irradiates an image on a recording material with ultraviolet radiation, when the recording material is in an ultraviolet irradiation positon and is already heated by the heating portion, and a detecting portion detects a temperature of the recording material which has not yet been heated by the heating portion. In addition, a controller controls an output of the heating portion depending on the detected temperature so that the temperature of the recording material, when the recording material heated by the heating portion enters the ultraviolet irradiation position, is within a target temperature range that is set in advance.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: April 10, 2018
    Assignee: Canon Kabushiki Kaisha
    Inventor: Isao Komatsu
  • Patent number: 9904196
    Abstract: A white toner for developing an electrostatic charge image includes a white toner particle containing a binder resin and a white pigment particle, wherein, when a number average circle equivalent diameter of the white pigment particles, which are observed in a sectional image of the white toner particle, is taken as A, and a number average circle equivalent diameter of the white pigment particles, which are present in a surface layer portion within 35% from a surface of the white toner particle with respect to a particle diameter thereof, is taken as B, a relationship expressed by A>B is satisfied.
    Type: Grant
    Filed: April 28, 2017
    Date of Patent: February 27, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Kana Yoshida, Atsushi Sugawara, Tsuyoshi Murakami, Masaki Iwase
  • Patent number: 9882133
    Abstract: Embodiments of the disclosure provide an electronic package device and a fabrication method thereof, and a method for testing the electronic package device. The electronic package device comprises a base substrate and a package substrate that are provided opposite to each other, and a sealant provided therebetween. The electronic package device further comprises an electronic function layer provided on a side of the base substrate facing the package substrate, and a laminated film layer and a test lead provided on a side of the package substrate facing the base substrate. The laminated film layer comprises a hygroscopic film adjacent to the package substrate and a piezoelectric film coating surfaces of the hygroscopic film. The piezoelectric film contacts one end of the test lead, and the other end of the test lead passes through the sealant and extends to an exterior of the electronic package device.
    Type: Grant
    Filed: October 21, 2014
    Date of Patent: January 30, 2018
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Dan Wang
  • Patent number: 9857709
    Abstract: To provide a toner, containing: a binder resin; a colorant; a releasing agent; and a crystalline polyester resin, wherein the toner satisfies the following formulae (1) to (3): 40° C.?X?55° C. Formula (1) 85° C.?Y?92° C. Formula (2) 35° C.?Y?X?50° C. Formula (3) where X is an onset temperature and Y is an endset temperature of an endothermic peak on a differential scanning calorimetry (DSC) curve of the toner as measured by a differential scanning calorimeter (DSC).
    Type: Grant
    Filed: September 15, 2011
    Date of Patent: January 2, 2018
    Assignee: Ricoh Company, Ltd.
    Inventors: Naohiro Watanabe, Tsuyoshi Sugimoto, Mamoru Hozumi, Tomoyuki Sato, Shinya Hanatani
  • Patent number: 9717798
    Abstract: A composition is disclosed. The composition comprises at least one polymeric colorant having a polymer component with a colorant component covalently bound thereto, a medicament, and a liquid vehicle. The at least one colorant component does not react directly or indirectly with the medicament. Methods of using the polymeric colorants, including a method for the preparation of skin as a site for a surgical procedure and a method of treating a medical condition, are also provided.
    Type: Grant
    Filed: November 16, 2012
    Date of Patent: August 1, 2017
    Assignee: 3M Innovative Properties Company
    Inventors: Louis C. Haddad, Douglas A. Hanggi, David B. Olson, Matthew T. Scholz, Dong-Wei Zhu
  • Patent number: 9703223
    Abstract: The present invention provides a toner that includes a charge control agent containing one or two or more resorcin derivatives represented by the following formula (1), a colorant, and a binder resin.
    Type: Grant
    Filed: September 24, 2014
    Date of Patent: July 11, 2017
    Assignee: HODOGAYA CHEMICAL CO., LTD.
    Inventors: Masaki Okubo, Motonori Tsuji, Masami Ito, Masaya Tojo, Masafumi Asakai, Tetsuya Yoshida
  • Patent number: 9699192
    Abstract: A method for managing a data item includes a hub receiving a first access request from a first engine executing on a computing device operated by a first host and sending the first access request to a second engine executing on a first computing device of a second host. The second host owns the data item. The hub receives, from the second engine, the data item and an access rule set by the second host for the first host, and sends the first access rule and the data item to the first engine for storage. The first engine grants the first host access to the data item according to the first access rule.
    Type: Grant
    Filed: August 3, 2015
    Date of Patent: July 4, 2017
    Assignee: Gramboo Inc.
    Inventors: Nitish John, Harriet H. John, Yu Yin Doo Kin
  • Patent number: 9671710
    Abstract: The present disclosure relates to a chemically prepared toner composition including a toner particle having a core including a first polymer binder, an styrene acrylic encapsulated crystalline polyester latex, a pigment, a wax, and a shell formed around the core including a second polymer binder and method to make the same. The disclosed method of preparing the toner results in a change in the distribution of the components of the toner particle wherein the lower molecular weight resins, the pigment, and the wax are located away from the surface of the toner particle.
    Type: Grant
    Filed: November 10, 2015
    Date of Patent: June 6, 2017
    Assignee: LEXMARK INTERNATIONAL, INC.
    Inventors: Jing X Sun, Cory Nathan Hammond
  • Patent number: 9625848
    Abstract: A toner, wherein the toner is obtained by washing a toner particle dispersion liquid which is obtained by adding cellulase to a dispersion slurry, and the dispersion slurry is obtained from a dispersion liquid or an emulsion of a toner material-containing oil phase in an aqueous medium, and wherein the dispersion liquid or the emulsion contains a cellulosic dispersion stabilizing agent.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: April 18, 2017
    Assignee: Ricoh Company, Ltd.
    Inventors: Yousuke Suzuki, Sayaka Yuasa, Sayuri Kojima, Takahiro Kadota, Yasuaki Iwamoto
  • Patent number: 9606466
    Abstract: The present invention is a toner including a toner particle containing a binder resin and a charge control agent, wherein the binder resin includes a resin having a polyester unit with at least one aliphatic compound condensed to the terminal thereof, the at least one aliphatic compound being selected from the group consisting of aliphatic monocarboxylic acids each having 30 or more and 102 or less carbon atoms and aliphatic monoalcohols each having 30 or more and 102 or less carbon atoms; and the charge control agent includes a specific compound (a pyrazolone monoazo metal compound).
    Type: Grant
    Filed: March 16, 2015
    Date of Patent: March 28, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Toru Takahashi, Yoshihiro Ogawa, Daisuke Tsujimoto, Wakashi Iida
  • Patent number: 9574036
    Abstract: Ionomer composite resins and core/shell nanoparticles are described. The ionomer resin contains a metal ion. The metal can be in the core, shell or both.
    Type: Grant
    Filed: May 7, 2015
    Date of Patent: February 21, 2017
    Assignee: Xerox Corporation
    Inventors: Valerie M Farrugia, Wendy Chi, Sandra J Gardner
  • Patent number: 9551947
    Abstract: A magnetic toner is provided that exhibits an excellent dot reproducibility and developing performance after being allowed to stand in a high temperature and high humidity environment and an excellent low-temperature fixability. The magnetic toner has an inorganic fine powder and a magnetic toner particle containing a binder resin, a magnetic body, and a release agent, wherein in a stress relaxation measurement using a rotating plate rheometer, the magnetic toner exhibits a yield value A at 25° C. of at least 3×106 (sec), and the magnetic toner that has been heated to 80° C. and then cooled to 25° C. exhibits a yield value B at 25° C. of not more than 1×105 (sec).
    Type: Grant
    Filed: August 8, 2011
    Date of Patent: January 24, 2017
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Shuichi Hiroko, Yoshihiro Nakagawa, Tomohisa Sano
  • Patent number: 9546286
    Abstract: Disclosed herein are resistive composites comprising at least one resin; at least one carbon black having a surface hydrophobically modified with at least one organic group, the at least one organic group having a molecular weight of the composite of 4000 or less and comprising the formula —X(G)-, wherein X is directly attached to the at least one carbon black and is selected from arylene, heteroarylene, and alkylene, G is a substituent of X, and —X(G)- is nonionic; and wherein the resistive composite has a volume resistivity, Rv, at a relative volume fraction, XCB, of the at least one carbon black in the coating, where Rv is at least 106 ohm-cm; and log Rv has a substantially linear relationship with XCB when XCB is varied from 0.1 to 0.5. Also disclosed are coatings made from such composites, such as coatings for rollers/belts for office automation machines, and methods of making such coatings.
    Type: Grant
    Filed: July 20, 2012
    Date of Patent: January 17, 2017
    Assignee: Cabot Corporation
    Inventors: Eugene N. Step, Andriy Korchev, Agathagelos Kyrlidis, Clovis D. Haynes, Gregory R. Schulz, John R. Szwec
  • Patent number: 9534118
    Abstract: Dye mixtures based on dye(s) of formula (1) and dye(s) of formula (2) formula (3) formula (4) formula (5a) and/or formula (5b)
    Type: Grant
    Filed: January 6, 2014
    Date of Patent: January 3, 2017
    Assignee: DyStar Colours Distribution GmbH
    Inventors: Fanny Vermandel, Adrian Murgatroyd, Clemens Grund, Manfred Hoppe, Ulrich Weingarten
  • Patent number: 9518156
    Abstract: A method includes heating a sulfonated polyester resin in an organic-free solvent, adding a solution of silver (I) ion to the heated resin in water to form a mixture, reducing silver (I) to silver (0) by heating the mixture from about 65° C. to about 90° C., thereby forming an emulsion of composite particles comprising a sulfonated polyester matrix and a plurality of silver nanoparticles disposed within the sulfonated polyester matrix, and allowing the silver nanoparticles to agglomerate into a silver nanodendrite structure.
    Type: Grant
    Filed: January 23, 2015
    Date of Patent: December 13, 2016
    Assignee: XEROX CORPORATION
    Inventors: Valerie M. Farrugia, Alana Desouza, Sandra J. Gardner
  • Patent number: 9513593
    Abstract: An image forming apparatus includes an image holding member; a charging unit; an electrostatic charge image forming unit; a developing unit that accommodates an electrostatic charge image developer that contains toner particles having a shape factor SF1 of 120 to 145 and hydrophobic inorganic oxide particles having a number average particle diameter of 30 nm to 80 nm and satisfies the Formula (1), and develops the electrostatic charge image formed on the surface of the image holding member to form a toner image, by the electrostatic charge image developer; a transfer unit; and a cleaning unit that includes a cleaning blade which contacts with the surface of the image holding member at contact pressure of 9.8 mN/mm to 21.6 mN/mm, and removes toner remaining on the surface of the image holding member after transferring the toner image by the cleaning blade: Q?160?12R??(1).
    Type: Grant
    Filed: February 19, 2014
    Date of Patent: December 6, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventor: Nagahito Ichijo
  • Patent number: 9500969
    Abstract: Disclosed here is a method for producing a decolorizable electrophotographic toner, comprising mixing a first dispersion liquid in which a colorant is dispersed in an amount such that the content of the colorant in the toner is from 5% to 35% by weight, with a second dispersion liquid in which particles containing at least a binder resin and having a volume average particle diameter of 500 nm or less are dispersed, aggregating the colorant and the particles containing at least the binder resin, thereby obtaining aggregated particles, fusing the aggregated particles at a temperature lower than a completely decolorizing temperature of the colorant to obtain the toner, and measuring the number ratio of particles having an equivalent circle diameter of 0.6 ?m or more and 2.5 ?m or less of the toner using a flow particle image analyzer after the toner is subjected to a stirring treatment.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: November 22, 2016
    Assignees: Toshiba Tec Kabushiki Kaisha, Kabushiki Kaisha Pilot Corporation, The Pilot Ink Co., Ltd.
    Inventors: Masahiro Ikuta, Takahito Kabai, Takayasu Aoki, Tsuyoshi Itou
  • Patent number: 9501015
    Abstract: An image forming apparatus includes an image forming unit, a heating unit, and a fixing unit. The image forming unit uses a toner including a flat pigment. The heating unit heats a recording medium. The fixing unit allows the recording medium to pass therethrough so as to cause an image formed on the recording medium to be fixed onto the recording medium by heat. In the image forming apparatus, the heating unit heats the recording medium on which the image has not been formed, the image forming unit forms the image on the recording medium having been heated, and the fixing unit fixes the image having been formed onto the recording medium.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: November 22, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Aya Kakishima, Miho Ikeda, Koichiro Yuasa, Yasumitsu Harashima, Toko Hara, Yoshihiro Hayashi
  • Patent number: 9500970
    Abstract: Provided is a toner that has excellent low-temperature fixability and is capable of obtaining an image having a stable image density, in which the occurrence of image defects is suppressed. The toner includes toner base particles, each of which contains a binder resin and a magnetic material, and organic-inorganic composite fine particles on each of the toner base particles. Each of the organic-inorganic composite fine particles comprises a vinyl resin particle, and inorganic fine particles which are embedded in the vinyl resin particle, and at least a part of which are exposed. The volumetric specific heat of the organic-inorganic composite fine particles and the volumetric specific heat of the toner base particles satisfy a predetermined provision.
    Type: Grant
    Filed: July 30, 2014
    Date of Patent: November 22, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventors: Shotaro Nomura, Masami Fujimoto, Katsuhisa Yamazaki, Kouji Nishikawa, Daisuke Yoshiba, Hiroki Akiyama
  • Patent number: 9494885
    Abstract: A method for producing a developing agent including preparing a dispersion liquid containing first fine particles containing a binder resin and second fine particles containing a color developable compound, a color coupler, and a color eraser, and aggregating the first and second fine particles in the dispersion liquid to form aggregated particles.
    Type: Grant
    Filed: March 5, 2015
    Date of Patent: November 15, 2016
    Assignee: TOSHIBA TEC KABUSHIKI KAISHA
    Inventors: Takahito Kabai, Tsuyoshi Itou
  • Patent number: 9383669
    Abstract: Provided is a brilliant toner containing a brilliant metallic pigment of which the surface is covered with at least one kind of metal oxides selected from a group consisting of silica, alumina, and titania, wherein the brilliant toner has a dielectric loss factor of from 10×10?3 to 60×10?3.
    Type: Grant
    Filed: February 28, 2013
    Date of Patent: July 5, 2016
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Masaru Takahashi, Sakiko Hirai, Shotaro Takahashi, Atsushi Sugitate, Shuji Sato
  • Patent number: 9366980
    Abstract: A process for making colored polyester latex by phase inversion emulsification is described.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: June 14, 2016
    Assignee: Xerox Corporation
    Inventors: Shigeng Li, Peter V Nguyen, Judith M Vandewinckel, Amy A Grillo, Chieh-Min Cheng
  • Patent number: 9359512
    Abstract: A siloxane-containing ink composition for variable data lithographic printing includes a nano-particle polymer or blend of nano-particle polymers, wherein the polymer or polymers of the blend are water dispersible at temperatures below 100 degrees Celsius; and solids content is in an amount of greater than 25 percent by total weight.
    Type: Grant
    Filed: December 23, 2013
    Date of Patent: June 7, 2016
    Assignee: XEROX CORPORATION
    Inventors: Carolyn Moorlag, Marcel Breton, Guerino Sacripante, Ke Zhou
  • Patent number: 9354531
    Abstract: A process for making a latex emulsion where distillation occurs at an elevated temperature is used to make resin particles with a conditioned surface which can be used to make magenta toner with increased efficiency.
    Type: Grant
    Filed: July 1, 2014
    Date of Patent: May 31, 2016
    Assignee: XEROX CORPORATION
    Inventors: Shigeng Li, Christopher M Wolfe, Randy P Tin, Eric Godshall, Shigang Qiu, Peter V Nguyen, Jay L Schneider, Linda S Schriever, Steven M Malachowski, Amy A Grillo, Chieh-Min Cheng
  • Patent number: 9329512
    Abstract: Bio-based toner compositions that exhibit excellent performance and provide high print quality. More specifically, the present bio-based toner compositions comprise greater than 20% bio-resins but avoid the moisture sensitivity issues that bio-resins are prone to by also including one or more oil additives.
    Type: Grant
    Filed: December 9, 2014
    Date of Patent: May 3, 2016
    Assignee: XEROX CORPORATION
    Inventors: Varun Sambhy, Juan A. Morales-Tirado, Santokh S. Badesha, Susan J. LaFica
  • Patent number: 9316960
    Abstract: A fixing device includes: a non-contact heating portion that includes at least one non-contact heating unit which heats a toner image on a sheet; and a pressurizing and heating unit that is provided downstream in a sheet transport direction with respect to the non-contact heating portion and that pressurizes and heats the toner image. A time from a first point of time when the toner image reaches a toner melting temperature by heating of the non-contact heating portion to a second point of time when the toner image enters the pressurizing and heating unit is set equal to or more than a predetermined time. The predetermined time is a time when a ratio between the weight of the toner in the toner image before the entrance and the sum of the weight of the toner and the weight of the carrier liquid is equal to or more than 70%.
    Type: Grant
    Filed: August 31, 2015
    Date of Patent: April 19, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Yuji Kamoda, Junya Hirayama, Shigeo Uetake, Tomohiko Masuda
  • Patent number: 9291931
    Abstract: Provided is an electrostatic charge image developing toner, including: toner base particles including a polyester resin as a binder resin; and an external additive on the surface of the toner base particles. The external additive includes silica. The silica is produced by sol-gel method, and is aspherical. The percentage of change in the specific surface area of the toner when it is stored under high-temperature, high-humidity conditions is from 25% to 45%.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 22, 2016
    Assignee: Ricoh Company, Ltd.
    Inventors: Junichi Awamura, Tsuneyasu Nagatomo, Satoshi Kojima, Shingo Sakashita, Tomoki Murayama, Masaya Fukuda
  • Patent number: 9261808
    Abstract: Fluorescing highlights can be provided in selected portions of non-color image areas of a printed toner image using fluorescing dry toner particles, such as fluorescing magenta and fluorescing yellow dry toner particles. Before fixing, each fluorescing dry toner particle comprises a polymeric binder phase and a fluorescing colorant that emits at one or more ?max wavelengths of at least 420 nm and up to and including 690 nm and that is dispersed within the polymeric binder phase.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: February 16, 2016
    Assignee: EASTMAN KODAK COMPANY
    Inventors: Dinesh Tyagi, Louise Granica
  • Patent number: 9261814
    Abstract: A developing roller that is capable of carrying toner on a surface thereof, and that supplies the toner carried on the surface to a surface of a photosensitive drum when a voltage is applied thereto, includes: an elastic layer; and a surface layer that covers the elastic layer and contains aluminum oxide, wherein the aluminum oxide of the surface layer contains tetracoordinated aluminum atoms and hexacoordinated aluminum atoms existing in a higher proportion than the tetracoordinated aluminum atoms.
    Type: Grant
    Filed: November 4, 2014
    Date of Patent: February 16, 2016
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Kazunari Hagiwara, Tatsuaki Orihara, Shuhei Tokiwa, Yasuyuki Matsumoto, Manami Haraguchi, Atsushi Nakamoto, Yasuhiro Horiguchi
  • Patent number: 9235152
    Abstract: There is provided a toner, including toner mother particles which contain a binder resin, a colorant, and a wax, wherein a difference between a density of the wax in a solid state and a density of the wax in a liquid state is not less than 0.11 g/cm3; the density of the wax in the liquid state is not more than 0.835 g/cm3; and a heat quantity of the wax per unit mass which is obtained from an endothermic peak area at a low temperature side measured by a differential scanning calorimetry is not less than 190 mJ/mg.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: January 12, 2016
    Assignee: Brother Kogyo Kabushiki Kaisha
    Inventors: Kumiko Suzuki, Jun Ikami
  • Patent number: 9213252
    Abstract: A transparent developer has a glass transition point of 63.0° C. to 66.0° C., both inclusive, and a melt temperature, indicative of a softening point by a 1/2 method, of 94.3° C. to 97.0° C., both inclusive.
    Type: Grant
    Filed: September 10, 2014
    Date of Patent: December 15, 2015
    Assignee: Oki Data Corporation
    Inventor: Manami Hiraide
  • Patent number: 9182693
    Abstract: A toner to develop an electrostatic charge image, the toner including at least a binder resin, a colorant, and a releasing agent, wherein a weight average molecular weight of the toner measured by using a gel permeation chromatography (GPC) method on a tetrahydrofuran (THF) soluble fraction is in a range of about 30,000 to about 80,000 g/mol, wherein a molecular weight distribution curve of the toner obtained by using the GPC method on the THF soluble fraction has at least one peak in a molecular weight range of 100 to 1,000 g/mol, a peak in a molecular weight range of 1,000 to 5,000 g/mol, and a main peak in a molecular weight range of 5,000 to 20,000 g/mol, a method of preparing the toner, a device to supply the toner, and an apparatus and method of forming an image by using the toner. The toner has more than certain levels of low-temperature fixability, an anti-hot-offset property, a charging ability, a gloss property, and a heat storage ability.
    Type: Grant
    Filed: March 7, 2013
    Date of Patent: November 10, 2015
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Takeshi Yoshida, Sung-jin Park, Yo-da Shin, Hwoing-woon Lee, Jin-mo Hong
  • Patent number: 9081315
    Abstract: A toner composition including at least one phosphorescent pigment that absorbs energy released by natural or artificial light, and is able to be seen in a dark environment through luminescence of a certain color created by the energy released as light, and a method of forming and using the toner are described. The phosphorescent toner has a particle size in the range of about 15-40 microns, which allows the toner to have the ability to absorb and then release the needed amount of light energy to be noticeable in a dark environment.
    Type: Grant
    Filed: April 18, 2012
    Date of Patent: July 14, 2015
    Assignee: TROY GROUP, INC.
    Inventors: Carrie A. Gilson, Kevin L. Heilman, Michael R. Riley