Fixing Toner Image (i.e., Fusing) Patents (Class 430/124.1)
  • Patent number: 11066782
    Abstract: Herein is described a method of printing on a textile substrate. The method may comprise: a. applying a primer comprising a cross-linkable primer resin onto a surface of the textile substrate to form a primer layer; b. electrophotographically printing onto the primer layer an electrostatic ink composition comprising a cross-linkable thermoplastic resin to form a printed layer; c. applying a cross-linking composition comprising a cross-linking agent to the printed layer, wherein i. the cross-linking agent penetrates into at least the electrostatic ink composition and the primer layer; and/or ii. the cross-linking agent is a non-isocyanate agent; and d. activating the cross-linking agent. Printed textiles are also described.
    Type: Grant
    Filed: July 21, 2016
    Date of Patent: July 20, 2021
    Assignee: HP Indigo B.V.
    Inventors: Dafna Or-Chen, Eyal Joseph, Inna Tzomik, Asaf Salant, Dani Tulchinski
  • Patent number: 10520857
    Abstract: A method of operating an electrophotographic printer (100) to control the optical density of a printed image is described. The method comprises providing a printing substance on a transfer member (104); emitting a pulse of heat to heat the printing substance on the transfer member to increase flowability of the printing substance on the transfer member; and transferring, from the transfer member to a substrate (108), the printing substance heated by the pulse of heat so as to provide the printed image on the substrate.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: December 31, 2019
    Assignee: HP Indigo B.V.
    Inventors: Peter Nedelin, Mark Sandler, Shai Lior
  • Patent number: 10072179
    Abstract: The invention relates to a vinyl functionalized urethane resin (VFUR) useful as a curing agent in thermosetting powder coating compositions, a process for making said vinyl functionalized urethane resin, a vinyl functionalized urethane resin composition (VFURC) useful as a curing agent in thermosetting powder coating compositions, a process for making vinyl functionalized urethane resin composition, a thermosetting powder coating composition (TPCC), a process for the preparation thereof, a cured thermosetting powder coating composition, processes for coating an article with said thermosetting powder coating composition and an article coated with said thermosetting powder coating composition as well as uses of the vinyl functionalized urethane resin or of the vinyl functionalized urethane resin composition or of the thermosetting powder coating composition or of the articles having coated and cured thereon said thermosetting powder coating composition.
    Type: Grant
    Filed: April 22, 2014
    Date of Patent: September 11, 2018
    Assignee: DSM IP ASSETS B.V.
    Inventor: Jan Pieter Drijfhout
  • Patent number: 9946184
    Abstract: An image forming apparatus includes a first image forming portion that uses toner containing flat pigment; a second image forming portion that uses toner not containing the flat pigment; and a toner image carrier that carries a first toner image that is formed in the first image forming portion and a second toner image that is formed in the second image forming portion. The image forming apparatus has a mode in which a relationship Am<Ac is satisfied, where Am denotes a number of toner layers of the first toner image that is carried by the toner image carrier, and Ac denotes the number of toner layers of the second toner image that is carried by the toner image carrier.
    Type: Grant
    Filed: September 16, 2014
    Date of Patent: April 17, 2018
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Koichiro Yuasa, Miho Ikeda, Takaharu Nakajima, Aya Kakishima, Yasumitsu Harashima, Toko Hara
  • Patent number: 9639033
    Abstract: An image forming apparatus includes: a latent image carrier; an image forming unit configured to form, on the latent image carrier, a toner image using a developer including a toner and a lubricating external additive charged with an opposite polarity to a charge polarity of the toner; a transfer device configured to electrostatically transfer, at a transfer position, the toner image formed by the image forming unit to a transfer medium; and a cleaning device configured to remove the toner remaining on the latent image carrier after passing the transfer position. The transfer device is configured to control a transfer voltage applied at the transfer position, based on an area ratio of an image to be printed.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: May 2, 2017
    Assignee: KONICA MINOLTA, INC.
    Inventor: Atsuto Hirai
  • Patent number: 9581926
    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: April 13, 2010
    Date of Patent: February 28, 2017
    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: 9494898
    Abstract: An image formation method includes a step of preparing an electrostatic latent image developer, a transferring step, and a fixation step. The step of preparing an electrostatic latent image developer includes a step of preparing an electrostatic latent image developer containing toner particles having prescribed viscoelasticity characteristics. The fixation step includes steps of heating a recording medium and fixing the toner particles to the recording medium at a pressure not lower than 200 kPa and not higher than 800 kPa.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: November 15, 2016
    Assignee: KONICA MINOLTA, INC.
    Inventors: Kunitomo Sasaki, Naoki Yoshie, Masahiro Anno
  • Patent number: 9102790
    Abstract: A polyester resin is a polymer of a carboxylic acid component and an alcohol component including a rosin diol represented by the formula (1), wherein an acid value is from 10 mg KOH/g to 30 mg KOH/g, a content of carboxylic acid having a rosin skeleton in the resin is 1% by weight or less, and a content of carboxylic acid except carboxylic acid having the rosin skeleton in the resin is 1% by weight or less: wherein, R1 and R2 each independently represent hydrogen or a methyl group, L1, L2 and L3 each independently represent a divalent linking group selected from the group consisting of a carbonyl group, a carboxyl group, an ether group, a sulphonyl group, a chain alkylene group, a cyclic alkylene group, an arylene group, and combinations thereof, and A1 and A2 represent a rosin ester group.
    Type: Grant
    Filed: May 20, 2014
    Date of Patent: August 11, 2015
    Assignee: FUJI XEROX CO., LTD.
    Inventors: Shiori Chonan, Sumiaki Yamasaki, Susumu Yoshino, Yuki Sasaki
  • Patent number: 9034548
    Abstract: A toner containing colorant, releasing agent, and binder resin containing crystalline polyester resin, and non-crystalline polyester resin containing urethane bond, urea bond, or both, the non-crystalline polyester resin containing first and second non-crystalline polyester resins, both containing urethane bond, or urea bond, or both, wherein monomers constituting the first non-crystalline polyester resin contains isocyanate monomer for forming the urethane bond, the urea bond, or the both, in an amount of 0.5 mol % or greater to total amount of the monomers, monomers constituting the second non-crystalline polyester resin contain isocyanate monomer for forming the urethane bond, the urea bond, or the both, in an amount of 0.5 mol % or greater to total amount of the monomers, the first non-crystalline polyester resin has Tg of ?60° C. or higher but lower than 10° C., and the second non-crystalline polyester resin has Tg of 30° C. or higher but lower than 70° C.
    Type: Grant
    Filed: December 10, 2012
    Date of Patent: May 19, 2015
    Assignee: Ricoh Company, Ltd.
    Inventors: Tatsuru Moritani, Hiroshi Yamashita, Tsuyoshi Sugimoto, Daisuke Asahina, Rintaro Takahashi, Susumu Chiba
  • Publication number: 20150132697
    Abstract: A toner includes toner particles, each containing binder resin and a plurality of microcapsules dispersed therein, each of the microcapsules containing a liquid material. A method for forming an image on a medium includes forming an electrostatic latent image on a carrier, forming a toner image by developing the electrostatic latent image using the toner, transferring the toner image onto a medium, and fixing the transferred toner image on the medium.
    Type: Application
    Filed: November 13, 2014
    Publication date: May 14, 2015
    Inventors: Maiko YOSHIDA, Satoshi ARAKI, Taishi TAKANO, Takashi URABE
  • Publication number: 20150111143
    Abstract: A method for producing a positively chargeable toner, including: step 1: melt-kneading a toner raw material composition containing a resin binder, a positively chargeable charge control agent, and fine fluororesin particles, and a recycled powder; step 2: cooling a melt-kneaded mixture obtained in the step 1, and pulverizing a cooled mixture; and step 3: classifying a pulverized product obtained in the step 2, wherein the resin binder in the toner raw material composition contains 50% by mass or more of a polyester having a softening point of 125° C. or higher and 170° C. or lower. The positively chargeable toner obtainable by the method of the present invention is suitably used in developing latent images formed in, for example, an electrophotographic method, an electrostatic recording method, an electrostatic printing method, or the like.
    Type: Application
    Filed: October 6, 2014
    Publication date: April 23, 2015
    Applicant: Kao Corporation
    Inventors: Kohei KATAYAMA, Masahito YAMAZAKI
  • Publication number: 20150104740
    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: Application
    Filed: March 8, 2013
    Publication date: April 16, 2015
    Applicant: Sharp Kabushiki Kaisha
    Inventors: Shintaro Fukuoka, Tadayuki Sawai, Yoritaka Tsubaki, Keigo Mitamura, Yui Kawano, Keiichi Kikawa
  • Publication number: 20150086913
    Abstract: A fluorescing yellow polymeric toner particle comprises one or more non-fluorescing yellow colorants, and one or more fluorescing yellow colorants having one or more emission peak wavelengths of at least 480 nm and up to and including 600 nm. These fluorescing yellow polymeric toner particles can be used to provide multicolor toner images with increased yellow color gamut on various printed receiver materials.
    Type: Application
    Filed: December 3, 2014
    Publication date: March 26, 2015
    Inventors: Dinesh Tyagi, Chung-Hui Kuo, Louise Granica
  • Publication number: 20150079513
    Abstract: A toner for electrostatic image development is configured such that: a binder resin is polyester resin; a release agent dispersing aid is styrene acrylic copolymer resin having at least one of an ?-methylstyrene structure and a styrene structure, and is contained in an amount of 5.5 parts by weight to 12 parts by weight with respect to 100 parts by weight of the polyester resin; and the styrene acrylic copolymer resin has an acid value of 3 KOHmg/g to 9 KOHmg/g, and the toner for electrostatic image development has an acid value of 14 KOHmg/g to 19 KOHmg/g.
    Type: Application
    Filed: March 8, 2013
    Publication date: March 19, 2015
    Inventors: Shintaro Fukuoka, Tadayuki Sawai, Yoritaka Tsubaki, Keiichi Kikawa, Keigo Mitamura, Yui Kawano
  • Publication number: 20150072282
    Abstract: An electrostatic latent image developing toner includes toner particles. Each toner particle includes a toner core containing a binder resin, a shell layer coating a surface of the toner core, and particulates having a higher hardness than the shell layer. Each shell layer contains a thermosetting resin, and the particulates are present within the shell layer. Preferably, the content of the particulates having a higher hardness than the shell layer is 0.1% by mass or more and 5.0% by mass or less with respect to a total amount of the toner particles.
    Type: Application
    Filed: September 10, 2014
    Publication date: March 12, 2015
    Applicant: KYOCERA Document Solutions Inc.
    Inventor: Seiji OKADA
  • Patent number: 8900786
    Abstract: A plurality of image parts, each having a different gloss level, are formed on the same recording material by electrophotographic technology. The plurality of gloss levels are visually recognized due to the plurality of image parts. The image forming method includes: developing electrostatic latent images on respective image carriers using a high softening point clear toner and a low softening point clear toner, to form a toner image by the high softening point clear toner and a toner image by the low softening point clear toner; transferring the toner images onto a recording material; and heat-fixing the toner image for low gloss and the toner image for high gloss transferred and formed onto the recording material, wherein a softening point Tm(a) of the high softening point clear toner and a softening point Tm(b) of the low softening point clear toner satisfy Tm(a)?Tm(b)>6° C.
    Type: Grant
    Filed: June 14, 2013
    Date of Patent: December 2, 2014
    Assignee: Konica Minolta, Inc.
    Inventors: Yoshiyasu Matsumoto, Aya Shirai, Ryuichi Hiramoto, Taiki Amemiya
  • Patent number: 8889330
    Abstract: A toner including a mother toner particle having a core-shell structure formed of a core containing a binder resin, a coloring agent, and an optional releasing agent, and a shell having a layer thickness of from 0.01 to 2.00 ?m, the core having a softening index of from 60 to 85° C. as measured by a flow tester, and the shell having a thermal hardness of from 0.7 to 1.8 m, and an optional external additive.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: November 18, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Hideki Sugiura, Yuka Mizoguchi
  • Publication number: 20140272339
    Abstract: A fluorescing yellow polymeric toner particle comprises one or more non-fluorescing yellow colorants, and one or more fluorescing yellow colorants having one or more emission peak wavelengths of at least 480 nm and up to and including 600 nm. These fluorescing yellow polymeric toner particles can be used to provide multicolor toner images with increased yellow color gamut.
    Type: Application
    Filed: March 15, 2013
    Publication date: September 18, 2014
    Inventors: Dinesh Tyagi, Chung-Hui Kuo, Louise Granica
  • Publication number: 20140227638
    Abstract: A carrier for use in a two-component developer for developing an electrostatic latent image is provided. The carrier includes a particulate magnetic core; and a cover layer located on a surface of the particulate magnetic core and including a resin and a particulate electroconductive material. The carrier has a BET specific surface area of from 0.8 to 1.6 m2/g.
    Type: Application
    Filed: December 16, 2013
    Publication date: August 14, 2014
    Inventors: Hiroyuki KISHIDA, Shigenori Yaguchi, Hiroshi Tohmatsu, Koichi Sakata, Hitoshi Iwatsuki, Toyoaki Tano, Kenichi Mashiko
  • Patent number: 8771911
    Abstract: A magenta toner for electrophotography, including: toner particles containing, a polyester resin, a coloring agent containing a solid solution of C.I. Pigment Violet 19 and C.I. Pigment Red 122, a release agent, and inorganic particles; and an external additive, wherein an average particle diameter of the inorganic particle is 0.75 times or more the average particle diameter of the coloring agent.
    Type: Grant
    Filed: May 3, 2012
    Date of Patent: July 8, 2014
    Assignee: Fuji Xerox, Co., Ltd.
    Inventors: Satoshi Kamiwaki, Akira Matsumoto, Yusuke Ikeda, Yukiaki Nakamura, Masanobu Ninomiya
  • Patent number: 8741524
    Abstract: A toner containing at least a binder resin and a colorant, wherein the toner has a core-shell structure composed of a core, and a shell having a thickness of 0.01 ?m to 2 ?m on a surface of the core, and wherein the toner satisfies the following relation: 1.1?ST/CT?2.0 where ST is a softening temperature of the shell, and CT is a softening temperature of the core, both measured by a SPM probe with an integrated heater.
    Type: Grant
    Filed: February 18, 2009
    Date of Patent: June 3, 2014
    Assignee: Ricoh Company, Ltd.
    Inventor: Hideki Sugiura
  • Patent number: 8741529
    Abstract: An image forming method including forming an electrostatic latent image on an image bearing member; developing the electrostatic latent image using a color toner and a transparent toner to form a color toner image and a transparent toner image thereon; transferring the color toner image and the transparent toner image to a recording material; and fixing the color toner image and the transparent toner image on the recording material. The color toner includes a polyester resin and a colorant, and the loss tangent of the color toner has a maximum peak at a temperature of from 80° C. to 160° C., and is not greater than 3 at the maximum peak. The transparent toner includes a crystalline polyester resin, and the loss tangent of the transparent toner has a maximum peak at a temperature of from 80° C. to 160° C., and is not less than 3 at the maximum peak.
    Type: Grant
    Filed: March 14, 2012
    Date of Patent: June 3, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Mitsuo Aoki, Hisashi Nakajima, Masashi Nagayama, Saori Yamada
  • Patent number: 8741530
    Abstract: A method of forming an image on a substrate with an electrophotographic photoreceptor and a toner, a photosensitive layer of the electrophotographic photoreceptor contains a resin having a structural unit represented by the following formula (A) the toner containing toner matrix particles formed in an aqueous medium; the toner has a volume median diameter (Dv50) of from 4.0 ?m to 7.0 ?m; and the relationship between the volume median diameter (Dv50) and the percentage in number (Dns) of toner particles having a particle diameter of from 2.00 ?m to 3.56 ?m satisfies following formula (1) Dns?0.233EXP(17.3/Dv50)??(1).
    Type: Grant
    Filed: November 21, 2012
    Date of Patent: June 3, 2014
    Assignee: Mitsubishi Chemical Corporation
    Inventors: Teruyuki Mitsumori, Kozo Ishio, Hiroaki Takamura, Masaya Oota, Shiho Sano, Takeshi Oowada, Masakazu Sugihara, Teruki Senokuchi, Shiro Yasutomi, Yumi Hirabaru
  • Publication number: 20140147785
    Abstract: An electrostatic charge image developing toner includes toner particles containing a binder resin, and first silica particles attached to surfaces of the toner particles, in which the first silica particles are treated with a hydrophobizing agent in supercritical carbon dioxide.
    Type: Application
    Filed: May 23, 2013
    Publication date: May 29, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Emi MATSUSHITA, Junichi TOMONAGA, Yasuo KADOKURA, Shunsuke NOZAKI
  • Patent number: 8728698
    Abstract: The present invention is to provide a carrier and a developer, which have fewer occurrences of carrier adhesion and background smear, excellent granularity and longer durability. The carrier comprises the core material particles having magnetism and resin coating layer covering the core material particles, and wherein the weight average particle diameters is in the range of 22 m to 32 m, the proportion of the weight average particle diameters relative to the number average particle diameter is in the range of 1.00 to 1.20, the content of particles having a diameter of 20 m or smaller is 7% by mass, the content of carrier particles having a diameter of 36 m or smaller is in the range of 90% by mass to 100% by mass, and the proportion of the particle density of the core material particles is in the range of 85% to 100% of the true density of the core material particles.
    Type: Grant
    Filed: March 6, 2007
    Date of Patent: May 20, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Masashi Nagayama, Kimitoshi Yamaguchi, Naoki Imahashi
  • Publication number: 20140113227
    Abstract: An electrostatic charge image developing toner is provided which includes a core particle that contains an amorphous polyester resin and a colorant; and a shell layer that covers the core particle and contains a polystyrene resin, wherein a softening temperature Ma of the shell layer and a softening temperature Mb of the core particle satisfy a relationship of 10° C.?Ma-Mb?45° C.
    Type: Application
    Filed: June 6, 2013
    Publication date: April 24, 2014
    Inventors: Tomohiro SHINYA, Shinpei TAKAGI, Soichiro KITAGAWA, Shinya SAKAMOTO
  • Publication number: 20140113228
    Abstract: A toner has a weight-average particle diameter (D4) of 3.0 ?m or more and 8.0 ?m or less, wherein the average circularity analyzed by dividing particles of the toner having an equivalent circle diameter of 1.98 ?m or more and less than 200.00 ?m into 800 in a range of a circularity of 0.200 or more and 1.000 or less is 0.960 or more and 0.985 or less, the proportion of particles A having a circularity of 0.990 or more and 1.000 or less is 25.0% or less on a basis of the number of particles, and the ratio of particles B having an equivalent circle diameter of 0.50 ?m or more and less than 1.98 ?m to the total particles having an equivalent circle diameter of 0.50 ?m or more and less than 200.00 ?m is 10.0% or less on a basis of the number of particles.
    Type: Application
    Filed: May 30, 2012
    Publication date: April 24, 2014
    Applicant: CANON KABUSHIKI KAISHA
    Inventors: Yoshiaki Shiotari, Kosuke Fukudome, Nozomu Komatsu, Kunihiko Nakamura, Kentaro Kamae, Hiroyuki Fujikawa, Koh Ishigami, Takayuki Itakura
  • Patent number: 8703376
    Abstract: A toner, wherein a binder resin contains a polyester resin (A) produced by polycondensing an alcohol component with a carboxylic acid component which contains a rosin compound in an amount of 5% by mass or more of the total amount by mass of the alcohol component and the carboxylic acid component, and a polyester resin (B) produced by polycondensing an alcohol component containing an alkylene oxide adduct of bisphenol A represented by General Formula (1) given below with a carboxylic acid component, and wherein the toner contains abietic acid in an amount of 0.01% by mass to 1% by mass: where R1 and R2 each represent C2-C4 alkylene; R3 and R4 are each any one of a hydrogen atom, C1-C6 straight-chain alkyl, and C1-C6 branched-chain alkyl; and x and y each represent a positive integer and the sum of x and y is 1 to 16.
    Type: Grant
    Filed: November 24, 2009
    Date of Patent: April 22, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Saori Yamada, Shinya Nakayama, Hisashi Nakajima, Mitsuo Aoki, Hyo Shu, Hiroyuki Kishida
  • Publication number: 20140106275
    Abstract: An electrostatic-image developing toner contains an amorphous polyester resin that has repeating units having a backbone derived from dehydroabietic acid in a main chain thereof and that has a weight average molecular weight of about 30,000 to about 80,000; and at least one of a crystalline polyester resin containing a dicarboxylic acid (C10) and a diol (C9) as polymerization components and a crystalline polyester resin containing a dicarboxylic acid (C9) and a diol (C10) as polymerization components.
    Type: Application
    Filed: May 15, 2013
    Publication date: April 17, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Shigeru SEITOKU
  • Publication number: 20140099579
    Abstract: An electrostatic charge image developing toner includes toner particles having a core that includes a block copolymer of a crystalline polyester block and an amorphous polyester block, and a shell that covers the core and includes an amorphous polyester resin having an ethylenically unsaturated double bond, and of which a surface layer part includes a crosslinked product of the amorphous polyester resin having an ethylenically unsaturated double bond.
    Type: Application
    Filed: June 7, 2013
    Publication date: April 10, 2014
    Inventors: Shinpei TAKAGI, Soichiro KITAGAWA, Shinya SAKAMOTO, Tomohiro SHINYA
  • Patent number: 8691486
    Abstract: An electrostatic image developing toner including a toner particle (C), wherein the toner particle (C) has a structure in which a resin particle (A) containing at least a first resin (a) or a coated film (P) containing the first resin (a) is attached to a surface of a resin-containing particle (B) containing a second resin (b), and wherein the resin (b) includes a polyhydroxycarboxylic acid skeleton, and the resin (a) is a polyester resin containing a polybasic acid and a polyhydric alcohol.
    Type: Grant
    Filed: June 28, 2010
    Date of Patent: April 8, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryota Inoue, Akihiro Kotsugai, Akiyoshi Sabu, Shingo Sakashita, Yukiko Nakajima, Keiko Osaka
  • Patent number: 8685603
    Abstract: An electrostatic charge image developer includes a toner containing an external additive and a carrier comprising a resin-coated layer formed on a surface of a core material. The average shape factor SF1 of the toner is from 125 to 135, the number of particles having shape factor SF1 of less than 125 is from 5% to 30% by number with respect to the total number of toner particles, the number of particles having shape factor SF1 of greater than 135 is from 5% to 30% by number with respect to the total number of toner particles, the scratch line width in a scratch strength test of the resin used in the resin-coated layer is from 80 ?m to 200 ?m, and the scratch depth is from 60 ?m to 150 ?m.
    Type: Grant
    Filed: July 2, 2008
    Date of Patent: April 1, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Fusako Kiyono, Taichi Yamada, Yosuke Tsurumi, Akira Matsumoto, Akihiro Iizuka
  • Patent number: 8679713
    Abstract: An electrostatic image-developing toner comprising a binder resin, wherein the content of all the chlorine-substituted benzene derivatives in the electrostatic image-developing toner is about 0.01 ppb or more and about 10 ppb or less.
    Type: Grant
    Filed: September 17, 2010
    Date of Patent: March 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Akira Matsumoto, Yusuke Ikeda, Yukiaki Nakamura
  • Patent number: 8679721
    Abstract: The present disclosure aims to provide a toner that is capable of keeping a photoreceptor drum in satisfactory condition for a long period of time and preventing the occurrence of pinholes on the photoreceptor drum, which plays a key role in forming images. The present disclosure provides an electrostatic charge image developing toner in which an external additive is added to toner base particles, wherein the external additive includes inorganic fine particles attached with conductive fine particles, and the conductive fine particles are attached to the inorganic fine particles with certain strength.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: March 25, 2014
    Assignee: Kyocera Mita Corporation
    Inventor: Seiji Kikushima
  • Publication number: 20140080050
    Abstract: Toner contains a binder resin, wherein the binder resin contains a block copolymer A containing a crystalline segment X and a non-crystalline segment Y, wherein the toner has a thermo-mechanical analysis (TMA) compressive deformation amount (TMA %) of 10% or less at 50° C. and a relative humidity of 90%, wherein the toner has a spin-spin relaxation time (t130) of 10 ms or greater at 130° C. as measured by pulse nuclear magnetic resonance (NMR), wherein the toner has a spin-spin relaxation time (t?70) of 1 ms or less at 70° C. as measured by pulse NMR when descending from 130° C. to 70° C.
    Type: Application
    Filed: September 17, 2013
    Publication date: March 20, 2014
    Inventors: Daisuke Asahina, Hiroshi Yamashita, Tsuyoshi Sugimoto, Taichi Nemoto, Yoshitaka Yamauchi, Satoyuki Sekiguchi, Susumu Chiba
  • Publication number: 20140080053
    Abstract: An electrostatic-image developing toner contains a polyester resin prepared by addition reaction of a polycondensate of a carboxylic acid component and an alcohol component with an isocyanate-containing compound. The polycondensate has an active hydrogen group. The alcohol component includes a rosin diol represented by general formula (1): (wherein R1 and R2 are each independently hydrogen or methyl; L1, L2, and L3 are each independently a divalent linking group selected from the group consisting of carbonyl, carboxyl, ether, sulfonyl, optionally substituted linear alkylenes, optionally substituted cyclic alkylenes, optionally substituted arylenes, and combinations thereof; L1 and L2 or L1 and L3 are optionally taken together to form a ring; and A1 and A2 are rosin ester groups).
    Type: Application
    Filed: February 7, 2013
    Publication date: March 20, 2014
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Emi MIYATA, Hirotaka MATSUOKA, Susumu YOSHINO, Yuki SASAKI
  • Patent number: 8658338
    Abstract: A toner includes a resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a polymerization initiator.
    Type: Grant
    Filed: August 17, 2012
    Date of Patent: February 25, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Koji Horiba, Takahiro Ishizuka, Yoshihiro Inaba, Akira Imai, Ryosaku Igarashi, Takako Kobayashi, Daisuke Yoshino, Masahiro Oki
  • Publication number: 20140051021
    Abstract: An electrostatic charge image developing toner includes toner particles that have a core containing polyester, a release agent, and a colorant in which the polyester does not have an ethylenically unsaturated bond, and a shell coating the core and containing a polymer of vinyl monomers, and the toner particles satisfy the following Expression (1): Expression (1): 0.1?B/(A+B)?0.7, wherein in Expression (1), A represents a proportion (atom %) of atoms constituting the polyester in the entire atoms, that is obtained by analyzing surfaces of the toner particles by X-ray photoelectron spectroscopy; and B represents a proportion (atom %) of atoms constituting the polymer of vinyl monomers in the entire atoms, that is obtained by analyzing the surfaces of the toner particles by X-ray photoelectron spectroscopy.
    Type: Application
    Filed: May 31, 2013
    Publication date: February 20, 2014
    Inventors: Shinya SAKAMOTO, Shinpei TAKAGI, Soichiro KITAGAWA, Tomohiro SHINYA
  • Patent number: 8652739
    Abstract: The present invention provides a toner for developing an electrostatic charge image including toner particles having residual ammonium ions and silica particles containing a chlorine compound as an external additive.
    Type: Grant
    Filed: February 9, 2011
    Date of Patent: February 18, 2014
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Hiroko Kobayashi, Yasuhiro Arima
  • Patent number: 8652737
    Abstract: A toner which has i) toner base particles containing at least a binder resin and a colorant and ii) a fatty acid metal salt composition as an external additive. The fatty acid metal salt composition contains a nonionic surface-active agent and a fatty acid metal salt. This toner and an image forming process making use of the toner can keep the toner from adhering to a toner carrying member throughout running, promise a stable chargeability of the toner and can keep any deterioration of halftone image quality from being caused by excess charging of the toner and any image fog from being caused by insufficient charging of the toner.
    Type: Grant
    Filed: November 6, 2008
    Date of Patent: February 18, 2014
    Assignee: Canon Kabushiki Kaisha
    Inventors: Satoshi Handa, Naoya Isono, Katsuyuki Nonaka, Koji Abe, Yasuhiro Hashimoto, Akira Sugiyama, Yuhei Terui
  • Patent number: 8626015
    Abstract: Printers are provided for printing using large particle toner. One printer has a printer controller causing a first imaging module to form first toner image using a first toner particle having a first charge-to-mass ratio and a median volume weighted diameter between 3 um and 9 um and having a first charge-to-mass ratio and, a second imaging module to form a second toner image using second toner particles having a median volume weighted diameter that is greater than 20 um and a charge-to-mass ratio that is between ? to ½ of the first charge to mass ratio of the first toner times the ratio of the median volume weighted diameter of the first toner to the median volume weighted diameter of the second toner. The first toner image is transferred to a receiver using a first electrostatic field and the second toner image is transferred using a second electrostatic field.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: January 7, 2014
    Assignee: Eastman Kodak Company
    Inventors: Muhammed Aslam, Donald S. Rimai, Dinesh Tyagi
  • Patent number: 8623580
    Abstract: To provide a toner including: a resin particle (C) containing a first resin (a1), a second resin (a2), and a resin particle (B) to a surface of which the first resin (a1) and the second resin (a2) are attached, wherein the first resin (a1) and the second resin (a2) have mutually different glass transition temperatures, and wherein the resin particle (B) contains a third resin (b) having an amorphous polyhydroxycarboxylic acid skeleton.
    Type: Grant
    Filed: August 3, 2010
    Date of Patent: January 7, 2014
    Assignee: Ricoh Company, Ltd.
    Inventors: Yukiko Nakajima, Akihiro Kotsugai, Ryota Inoue, Akiyoshi Sabu, Shingo Sakashita, Keiko Osaka
  • Publication number: 20140004462
    Abstract: A method of making an article such as a lens on a receiver member having a desired cross-sectional profile includes: moving the receiver member past a plurality of deposition stations, with at least two of the deposition stations having first and second sources of marking particles having different volume average diameters, and selecting at least two different deposition stations with each having different size marking particles and depositing selected amounts of different marking particles on selected different locations of the receiver member depending upon the desired cross-section of a portion of the lens, the unfused toner stack height capability of each deposition station, and the fused toner stack height capability for the fusing method. The method further includes heating the deposited marking particles to fuse the toner stack and form the article having desired cross-sectional profile.
    Type: Application
    Filed: June 29, 2012
    Publication date: January 2, 2014
    Inventor: MARK CAMERON ZARETSKY
  • Patent number: 8603713
    Abstract: A toner including a colorant, a thermoplastic resin (a) comprising an amorphous polyester resin having a main chain having a polyhydroxycarboxylic acid skeleton, and a thermoplastic resin (b) is provided. The toner is manufactured by a method including mixing the colorant with the thermoplastic resin (a) to prepare a preliminary mixture, and mixing the preliminary mixture with the thermoplastic resin (b).
    Type: Grant
    Filed: February 26, 2010
    Date of Patent: December 10, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Akihiro Kotsugai, Toyoshi Sawada, Ryota Inoue, Akiyoshi Sabu, Shingo Sakashita, Keiko Osaka, Yukiko Nakajima
  • Patent number: 8592121
    Abstract: An electrostatic image developing toner for pressure fixing includes a binder resin that has a sea-island structure, wherein a difference between a glass transition temperature of a resin forming the sea phase and a glass transition temperature of a resin forming the island phase is about 30° C. or more, both of the glass transition temperatures of the resin forming the sea phase and the resin forming the island phase are less than about 55° C., and the island phase has a major axis of about 150 nm or less.
    Type: Grant
    Filed: March 9, 2009
    Date of Patent: November 26, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventor: Yasuo Matsumura
  • Patent number: 8586276
    Abstract: A carrier for developing an electrostatic latent image includes carrier particles, and the carrier particles include magnetic particles and a coating layer coating the surfaces of the magnetic particles. The BET specific surface area of the magnetic particles is 0.1300 m2/g to 0.2500 m2/g, and the difference in BET specific surface areas obtained by subtracting the BET specific surface area of the magnetic particles from the BET specific surface area of the carrier particles is 0.0300 m2/g to 0.400 m2/g.
    Type: Grant
    Filed: March 27, 2008
    Date of Patent: November 19, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Akira Matsumoto, Taichi Yamada, Yosuke Tsurumi, Fusako Kiyono, Akihiro Iizuka, Fumiaki Mera, Hirotaka Matsuoka
  • Patent number: 8580468
    Abstract: A developer for electrostatic photography, includes: a toner containing toner particles containing a colorant and a binder resin, and an external additive having a number average particle diameter of about 100 nm or more and about 800 nm or less; and rugged particles having a rate of ruggedness represented by formula (1) of about 30% or more and about 70% or less: Rate of Ruggedness=100?(Projected area/Envelope area)×100??(1).
    Type: Grant
    Filed: September 7, 2011
    Date of Patent: November 12, 2013
    Assignee: Fuji Xerox Co., Ltd.
    Inventors: Tetsuya Taguchi, Hirokazu Hamano, Masahiro Takagi, Tsuyoshi Murakami
  • Publication number: 20130295502
    Abstract: A method is used to provide a toner image with a metallic effect. After forming a latent image, it is developed with metallic dry toner particles to form a developed toner image that is transferred and fixed to a receiver material. Each metallic dry toner particle consists essentially of a polymeric binder phase and non-conductive metal oxide particles. Before fixing, the metallic dry toner particle has a mean volume weighted diameter (Dvol) of at least 15 ?m and up to and including 40 ?m. The non-conductive metal oxide particles are present in an amount of 20-50 weight %. The ratio of the metallic dry toner particle Dvol to the average equivalent circular diameter (ECD) of the non-conductive metal oxide particles in the metallic dry toner particles, before fixing, is greater than 0.1 and up to and including 10.
    Type: Application
    Filed: April 30, 2013
    Publication date: November 7, 2013
    Inventors: Dinesh Tyagi, Louise Granica, Kevin D. Lofftus
  • Publication number: 20130295341
    Abstract: A fluorescing dry toner particle comprises a polymeric binder phase comprising a non-fluorescing binder polymer and a polymeric fluorescing colorant dispersed within the non-fluorescing binder polymer. The polymeric fluorescing colorant comprises a fluorescing moiety that is covalently attached to a colorant polymer that is the same or different than the non-fluorescing binder polymer, but the polymeric fluorescing colorant is blendable with the non-fluorescing binder polymer to form a homogeneous polymeric binder matrix, and is present in an amount of at least 1 weight % and up to and including 40 weight %, based on the total fluorescing dry toner particle weight. These fluorescing dry toner particles can be used in various dry developers to provide fluorescing toner images with or without non-fluorescing color toner images.
    Type: Application
    Filed: May 2, 2012
    Publication date: November 7, 2013
    Inventors: Dinesh Tyagi, Louise Granica
  • Patent number: 8563116
    Abstract: There is described a method for producing a fuser member. The method includes obtaining a substrate and positioning a fluoroplastic sleeve around the substrate. The outer surface of the fluoroplastic sleeve is roughened to a surface roughness of between about 0.03 ?m Ra and about 3 ?m Ra. The outer surface is coated with a functional silicone oil.
    Type: Grant
    Filed: September 2, 2010
    Date of Patent: October 22, 2013
    Assignee: Xerox Corporation
    Inventors: Patrick J. Finn, Kenneth R. Rasch