Fixing Toner Image (i.e., Fusing) Patents (Class 430/124.1)
  • 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: 8565633
    Abstract: An image forming system including an image forming device forming on a recording sheet a first chromatic toner image, and a second chromatic toner image having an outermost layer of transparent toner, wherein the transparent toner has lower glass transition temperature than the chromatic toners; a fixing device having a fixing member contacting the recording sheet to heat the toner images to temperature not lower than the glass transition temperature of the chromatic toners so that the toner images are fixed; and a glossing device having a glossing member contacting the recording sheet to heat the toner images to temperature not lower than the glass transition temperature of the transparent toner and lower than the glass transition temperatures of the chromatic toners so that only the transparent toner achieves a rubber state and to cool the heated first and second toner images so that the transparent toner is solidified.
    Type: Grant
    Filed: October 26, 2011
    Date of Patent: October 22, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Yoshihiro Sonohara, Shinya Kobayashi, Tadashi Kasai, Masakazu Terao
  • 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
  • Publication number: 20130260296
    Abstract: An electrostatic latent image developer contains: an electrostatic-latent-image-developing toner that has toner particles formed by aggregating and fusing particles of a polyester resin, particles of a styrene resin and particles of a coloring agent in a starting material dispersion liquid of those particles dispersed in an aqueous solvent; and a carrier having a core particle and a resin coating layer to coat the surface of the core particle, wherein the ratio of the exposed area of the core particle to the surface of the carrier is about 7% or less.
    Type: Application
    Filed: July 16, 2012
    Publication date: October 3, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Norihito FUKUSHIMA, Manabu SERIZAWA
  • Publication number: 20130260302
    Abstract: A toner, including: crystalline resin; non-crystalline resin; and a composite resin, wherein the crystalline resin is crystalline polyester resin (A), the non-crystalline resin comprises: non-crystalline resin (B) containing chloroform insoluble matter; and non-crystalline resin (C) having a softening temperature (T½) lower than that of the non-crystalline resin (B) by 25° C. or more, an absolute value |Tgc?Tgb| of a difference between a glass transition temperature (Tgc) of non-crystalline resin (C) and a glass transition temperature (Tgb) of non-crystalline resin (B) is 10° C. or lower, wherein the composite resin is composite resin (D) containing a condensation polymerization resin unit and an addition polymerization resin unit, and the toner has a molecular weight distribution having a main peak in 1,000 to 10,000 and a half width of 15,000 or less, where the molecular weight distribution is obtained by gel permeation chromatography (GPC) of tetrahydrofuran (THF) soluble matter of the toner.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 3, 2013
    Inventors: Hisashi Nakajima, Saori Yamada, Masashi Nagayama, Mariko Takii, Shinya Hanatani
  • Publication number: 20130260307
    Abstract: A toner including a crystalline polyester resin (A), an amorphous resin (B), and a composite resin (C) having a condensation polymerization resin unit and an addition polymerization resin unit is provided. A molecular weight distribution of the toner based on THF-soluble contents thereof has a main peak within a molecular weight range from 1,000 to 10,000 and a half bandwidth of the main peak is 15,000 or less. The molecular weight distribution is determined by gel permeation chromatography. The toner includes chloroform-insoluble contents. A ratio C/R of the toner is within a range from 0.03 to 0.55. C and R represent heights of spectrum peaks specific to the crystalline polyester resin (A) and the amorphous resin (B), respectively, determined by a Fourier transform infrared spectroscopic attenuation total reflection method after the toner is stored in a thermostatic chamber at 45° C. for 12 hours.
    Type: Application
    Filed: March 14, 2013
    Publication date: October 3, 2013
    Inventors: Masashi Nagayama, Hisashi Nakajima, Saori Yamada, Shinya Hanatani, Mariko Takii, Yoshitaka Sekiguchi
  • Publication number: 20130252166
    Abstract: An electrostatic charge image developer includes a toner for developing an electrostatic charge image, containing toner particles including a polyester resin having a rosin skeleton and an external additive, and a carrier having core material particles and a coating resin layer which coats the surface of the core material particles, in which the hardness of the coating resin layer is from 1.2 times to 2.0 times that of the toner particles.
    Type: Application
    Filed: June 27, 2012
    Publication date: September 26, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: Kazuhiko YANAGIDA
  • Publication number: 20130252156
    Abstract: An electrostatic charge image developing toner includes toner particles that contain a binder resin having a carboxyl group, in which the carboxyl group in the binder resin present on the surfaces of the toner particles forms an alkaline earth metal salt, and an amount of the alkaline earth metal which is detected through ion chromatography of the toner particles is in a range of from 1.00×10?10 mol/g to 0.90×10?6 mol/g.
    Type: Application
    Filed: August 2, 2012
    Publication date: September 26, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi KAMIWAKI, Akira MATSUMOTO, Yukiaki NAKAMURA, Masanobu NINOMIYA, Yusuke IKEDA
  • Publication number: 20130252169
    Abstract: A carrier for developing electrostatic latent image, including a particulate magnetic core material; and a coated layer covering the surface of the particulate magnetic core material, wherein the coated layer includes a resin including a silicone resin and a methacrylic ester or an acrylic ester resin, and a filler including a substrate; and an electroconductive layer comprising tin dioxide (SnO2), overlying the substrate, and wherein the carrier includes tin (Sn) in an amount not less than 0.5% by atom and has a ratio (Sn/Si) of tin (Sn) to silicon (Si) of from 0.03 to 0.2 when subjected to an XPS analysis.
    Type: Application
    Filed: March 8, 2013
    Publication date: September 26, 2013
    Inventors: Shigenori Yaguchi, Hiroshi Tohmatsu, Koichi Sakata, Hitoshi Iwatsuki, Hiroyuki Kishida, Toyoaki Tano
  • Publication number: 20130244170
    Abstract: A polyester resin for a toner is a polycondensate of a carboxylic acid component and an alcohol component including rosin diol that is represented by the following formula (1) and has an alicyclic structure (alicyclic alcohol), wherein R1 and R2 each independently represents hydrogen or a methyl group, L1 represents a divalent linking group having an alicyclic structure, L2 and L3 each independently represents a divalent linking group selected from a group consisting of a carbonyl group, a carboxyl group, an ether group, a sulfonyl group, a chain-like alkylene group which may have a substituent, a cyclic alkylene group, a phenylene group, and combinations thereof, and A1 and A2 represent a rosin ester group, provided that a divalent linking group having the alicyclic structure represented by L1 may be a divalent linking group having an alicyclic structure formed through linking with any of R1, R2, L2 or L3.
    Type: Application
    Filed: September 5, 2012
    Publication date: September 19, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Emi MIYATA, Sumiaki YAMASAKI, Yuki SASAKI, Satoshi HIRAOKA, Hirofumi SHIOZAKI
  • Publication number: 20130244168
    Abstract: A toner including a resin particle (C) is provided. The resin particle (C) includes a resin particle (B) and; a resin particle (A) or covering layer (P) that is adhered to a surface of the resin particle (B). The resin particle (B) includes a resin (b) having a polyhydroxycarboxylic acid skeleton. The resin particle (A) or covering layer (P) includes a resin (a). The resin (a) is a polyester resin having a polybasic acid unit and a polyol unit and has a weight average molecular weight within a range from 9,500 to 100,000.
    Type: Application
    Filed: February 6, 2013
    Publication date: September 19, 2013
    Inventors: Daiki YAMASHITA, Shinya Nakayama, Atsushi Yamamoto, Yukiko Nakajima, Akiyoshi Sabu, Yoshihiro Moriya, Hideyuki Santo
  • Publication number: 20130244171
    Abstract: A polyester resin for a toner is a polycondensate of a dicarboxylic acid component and an alcohol component including rosin diol that is represented by the following formula (1), and has a weight average molecular weight (Mw) of from 40000 to 150000, and a molecular weight distribution (Mw/Mn) of from 12 to 25: wherein, R1 and R2 each independently represents hydrogen or a methyl group; L1, L2, and L3 each independently represents a divalent linking group selected from a group consisting of a carbonyl group, a carboxyl group, an ether group, a sulfonyl group, a chain-like alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and combinations thereof, and L1 and L2 or L1 and L3 may form a ring; and A1 and A2 represent a rosin ester group.
    Type: Application
    Filed: September 11, 2012
    Publication date: September 19, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Sumiaki YAMASAKI, Yuki SASAKI
  • Publication number: 20130244169
    Abstract: To provide a toner, which contains: a binder resin; a colorant; and wax, wherein the toner has Ta of 30° C. to 55° C., and Tb—Ta of 8° C. to 25° C., where Ta is a glass transition temperature of the toner determined from a constant heating component of a DSC curve of the toner obtained in a second heating process of temperature modulated differential scanning calorimetry, and Tb is a glass transition temperature of the toner determined from a constant heating component of a DSC curve of the toner obtained in a first heating process of temperature modulated differential scanning calorimetry.
    Type: Application
    Filed: November 2, 2011
    Publication date: September 19, 2013
    Inventors: Azumi Miyaake, Hideki Sugiura, Yuka Mizoguchi
  • Publication number: 20130244163
    Abstract: An electrostatic latent image developing toner contains toner particles that contain a binder resin and a pigment; and an external additive that contains inorganic particles, a ratio (C/D) of an average maximum thickness C to an average equivalent circle diameter D in the toner particles is from 0.05 to 0.7, the inorganic particles include silicone oil-treated inorganic particles in which the amount of free silicone oil with respect to the inorganic particles is from 0.1% by weight to 10% by weight, and the amount of the silicone oil-treated inorganic particles added with respect to 100 parts by weight of the toner particles is from 0.1 part by weight to 10 parts by weight.
    Type: Application
    Filed: August 1, 2012
    Publication date: September 19, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Shuji SATO, Atsushi SUGITATE, Masaru TAKAHASHI, Shotaro TAKAHASHI
  • Publication number: 20130236831
    Abstract: A polyurethane resin which is an addition polymer, includes an isocyanate compound containing at least a compound having two or more isocyanate groups; and an alcohol compound containing rosin diol represented by Formula (1): wherein in Formula (1), R1 and R2 represent a hydrogen atom or a methyl group, L1, L2, and L3 each independently represent a carbonyl group, an ester group, an ether group, a sulfonyl group, a chain alkylene group which may have a substituent, a cyclic alkylene group which may have a substituent, an arylene group which may have a substituent, and a divalent linking group selected from a group consisting of combinations of the above-described groups, wherein L1 and L2 or L1 and L3 may form a ring together, and A1 and A2 represent a rosin ester group.
    Type: Application
    Filed: July 31, 2012
    Publication date: September 12, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hirotaka MATSUOKA, Sumiaki YAMASAKI, Yuki SASAKI, Satoshi HIRAOKA, Hirofumi SHIOZAKI, Emi MIYATA
  • Publication number: 20130236829
    Abstract: A toner particle having a core and a shell, and a method for making the toner particle. The core includes a crystalline resin and the shell includes an amorphous resin. The shell is substantially to completely free of the crystalline resin. The toner particle permits inclusion of greater amounts of crystalline resin materials in the core, thereby lowering the minimum fusing temperature of the toner formed from the particles.
    Type: Application
    Filed: March 6, 2012
    Publication date: September 12, 2013
    Applicant: XEROX CORPORATION
    Inventors: Jordan H. Wosnick, Richard P. N. Veregin, Edward G. Zwartz, Michael S. Hawkins
  • Publication number: 20130236828
    Abstract: A toner including a binder resin and a colorant, the toner having a core-shell structure containing a core and a shell, wherein the binder resin contains a crystalline polyester resin and a non-crystalline polyester resin, wherein a ratio (A/B) of a mass (A) of the crystalline polyester resin to a mass (B) of the non-crystalline polyester resin is 5/95 to 75/25, and wherein a ratio (Ds/Dc) of a hardness (Ds) of the shell to hardness (Dc) of the core is 1.05 to 1.50 where the hardnesses (Ds) and (Dc) are measured with a scanning probe microscope.
    Type: Application
    Filed: November 2, 2011
    Publication date: September 12, 2013
    Inventors: Yuka Mizoguchi, Hideki Sugiura, Azumi Miyaake
  • Patent number: 8530130
    Abstract: A method of forming a glossy image is disclosed, comprising the steps of (a) forming a clear toner particle layer with clear toner particles on an image support, (b) heating and pressing the clear toner particle layer formed on the image support, while bringing the surface of the clear toner particle layer into contact with a belt, and (c) cooling the clear toner particle layer to form a clear toner layer, wherein the clear toner particles contain a binder resin and a releasing agent and exhibit a heat quantity of fusion of not less than 3.0 J/g and not more than 9.5 J/g, and the clear toner particles meeting the following requirement: 0.5?S2/S1?1.0.
    Type: Grant
    Filed: September 23, 2011
    Date of Patent: September 10, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Yasuko Uchino, Tatsuya Nagase, Asao Matsushima, Aya Shirai, Ryuichi Hiramoto, Michiyo Fujita
  • Patent number: 8524436
    Abstract: In the image forming method, a color toner image and a transparent toner image are formed using a first developing device containing a first developer including color toner and carrier, and a second developing device containing a second developer including transparent toner and carrier. At least the second developing device includes a developer bearing member bearing the second developer for developing an electrostatic image; a developer supplying passage supplying the developer to the developer bearing member while feeding the developer in a first direction; and a developer feeding passage separated from the developer supplying passage at a central portion thereof and feeding the developer used for development in a direction parallel to the first direction. The transparent toner includes a resin and a lubricant and has viscoelastic property such that loss tangent has a peak with height of not less than 3 at a temperature of from 80° C. to 160° C.
    Type: Grant
    Filed: June 24, 2011
    Date of Patent: September 3, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Masashi Nagayama, Mitsuo Aoki, Hideyuki Santo, Shigenori Yaguchi
  • Publication number: 20130224643
    Abstract: A transparent electrostatic charge image developing toner contains a binder resin, europium, and bismuth.
    Type: Application
    Filed: July 5, 2012
    Publication date: August 29, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yuki TAKAMIYA, Tsuyoshi MURAKAMI, Eisuke IWAZAKI, Satoshi YOSHIDA, Satoshi INOUE
  • Publication number: 20130224650
    Abstract: A liquid developer contains a carrier liquid, and toner particles containing a binder resin and a pigment surface-treated with a polyallylamine compound as a colorant.
    Type: Application
    Filed: August 21, 2012
    Publication date: August 29, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Masahiro OKI, Yoshihiro INABA, Akira IMAI, Daisuke YOSHINO, Takako KOBAYASHI, Koji HORIBA
  • Publication number: 20130196258
    Abstract: A toner includes a binder resin including an amorphous polyester resin (A), a crystalline polyester resin (B), and a polyurethane thermoplastic elastomer (C).
    Type: Application
    Filed: July 24, 2012
    Publication date: August 1, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshihiro INABA, Daisuke YOSHINO, Akira IMAI, Takako KOBAYASHI, Koji HORIBA, Masahiro OKI, Ryosaku IGARASHI
  • Publication number: 20130196259
    Abstract: An electrostatic charge image developing toner includes toner particles, and an external additive. The toner particles are (1) prepared by forming aggregated particles by aggregating resin particles in a raw material dispersion in which the resin particles are dispersed, and causing the aggregated particles to coalesce by heating an aggregated particle dispersion in which the aggregated particles are dispersed so as to form the toner particles, or (2) obtained by kneading and pulverizing a material including a binder resin and a release agent, and the external additive is silica particles having an average diameter in the range of 100 nm to 500 nm, an average circularity in the range of 0.5 to 0.85, and an average of a ratio of a circle-equivalent diameter Da obtained by plane image analysis to a maximum height H obtained by 3-D image analysis of greater than 1.5 and less than 1.9.
    Type: Application
    Filed: August 3, 2012
    Publication date: August 1, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yoshifumi IIDA, Hideaki YOSHIKAWA
  • Patent number: 8497058
    Abstract: An image forming method comprising the step of: forming a toner image employing toner particles containing at least a resin on an image supporting substrate having thereon a toner holding layer via a toner image holding process to form an image print, the toner image being held in the toner holding layer in the toner image holding process, wherein at least the toner particles or the image supporting substrate is separated from the image print via a separation process; and at least the separated toner particles or the separated image supporting substrate is recyclable as an image forming material.
    Type: Grant
    Filed: March 15, 2010
    Date of Patent: July 30, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Mitsutoshi Nakamura, Shigenori Kouno, Masaharu Matsubara
  • Publication number: 20130177842
    Abstract: To provide an electrophotographic photoconductor, which contains a layer containing a cured product obtained by crosslinking (i) a compound containing a charge-transporting group and three or more methylol groups, and (ii) a compound containing a charge-transporting group, which is other than the compound containing a charge-transporting group and three or more methylol groups.
    Type: Application
    Filed: September 13, 2011
    Publication date: July 11, 2013
    Inventors: Yuuji Tanaka, Norio Nagayama, Kazukiyo Nagai
  • Publication number: 20130171554
    Abstract: A yellow toner including: a non-crystalline resin; C.I. Pigment Yellow 185; and a releasing agent, wherein the yellow toner has a glass transition temperature of more than 18° C. but less than 40° C.
    Type: Application
    Filed: December 26, 2012
    Publication date: July 4, 2013
    Inventors: Hiroshi YAMASHITA, Masana Shiba, Satoyuki Sekiguchi, Yukari Fukuda, Daisuke Asahina, Rintaro Takahashi, Tsuyoshi Sugimoto
  • Publication number: 20130171434
    Abstract: The present disclosure relates to polymer particles comprising a polymer matrix having a coating of an inorganic semimetal oxide or metal oxide, wherein the polymer matrix has at least one first functional group A and at least one second functional group B, both functional groups A and B being able to enter into at least one covalent bond with one another, functional group A being selected from the group consisting of an azide group, C—C double bond, C—C triple bond, aldehyde group, ketone group, imine group, thioketone group and thiol group, and functional group B being selected from the group consisting of a C—C double bond, C—C triple bond, C—N triple bond, diene group, thiol group and amine group.
    Type: Application
    Filed: September 7, 2011
    Publication date: July 4, 2013
    Inventors: Thomas Hirth, Achim Weber, Kristin Borchers, Stefan Güttler
  • Publication number: 20130164672
    Abstract: A polyester resin is a polycondensate obtained by reacting a divalent alcohol, a divalent carboxylic acid, and a mono- or divalent rosin by the use of a zinc compound as a reaction catalyst.
    Type: Application
    Filed: April 26, 2012
    Publication date: June 27, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hirofumi SHIOZAKI, Susumu YOSHINO, Hirotaka MATSUOKA, Yuki SASAKI
  • Publication number: 20130164667
    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: Application
    Filed: May 3, 2012
    Publication date: June 27, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Satoshi KAMIWAKI, Akira MATSUMOTO, Yusuke IKEDA, Yukiaki NAKAMURA, Masanobu NINOMIYA
  • Publication number: 20130157193
    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: Application
    Filed: December 10, 2012
    Publication date: June 20, 2013
    Inventors: Tatsuru MORITANI, Hiroshi Yamashita, Tsuyoshi Sugimoto, Daisuke Asahina, Rintaro Takahashi, Susumu Chiba
  • Publication number: 20130157184
    Abstract: To provide a toner, including at least: a non-crystalline polyester resin; and a crystalline polyester resin, wherein the toner has a glass transition temperature in a first heating Tg1st and a glass transition temperature in a second heating Tg2nd, and a difference between Tg1st and Tg2nd (Tg1st?Tg2nd) is 10° C. or greater, and wherein the crystalline polyester resin is a modified crystalline polyester resin having a urethane skeleton or a urea skeleton, or both thereof.
    Type: Application
    Filed: November 26, 2012
    Publication date: June 20, 2013
    Inventors: Tsuyoshi SUGIMOTO, Hiroshi Yamashita, Daisuke Asahina, Rintaro Takahashi, Masahide Yamada, Shinya Nakayama, Atsushi Yamamoto, Shingo Sakashita
  • Patent number: 8465899
    Abstract: Printing methods are provided. In accordance with one aspect, a first toner image is formed with a first toner particles having a median volume weighted diameter between about 3 um and 9 um and having a first charge-to-mass ratio and, a second toner image is formed with second toner particles having a median volume weighted diameter greater than about 20 um and having a charge-to-mass ratio that is between ? to ½ of the first charge-to-mass ratio times the ratio of the volume weighted average diameter of the first toner to the volume weighted average 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 the receiver using a second electrostatic field.
    Type: Grant
    Filed: October 26, 2010
    Date of Patent: June 18, 2013
    Assignee: Eastman Kodak Company
    Inventors: Muhammed Aslam, Donald S. Rimai, Dinesh Tyagi
  • Patent number: 8460846
    Abstract: A toner for electrostatic image development, containing a resin binder and a wax, wherein the resin binder contains an amorphous polyester obtained by polycondensing a carboxylic acid component containing fumaric acid in an amount of from 55 to 100% by mole, with an alcohol component, wherein the wax contains an ester of pentaerythritol and a fatty acid having 15 to 25 carbon atoms, and a method of forming fixed images, including the step of applying the toner for electrostatic image development to a non-contact fixing type image-forming apparatus. The toner for electrostatic image development of the present invention is suitably used for, for example, developing a latent image formed in electrophotography, electrostatic recording method, electrostatic printing method, or the like.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: June 11, 2013
    Assignee: Kao Corporation
    Inventors: Satoshi Kunii, Masahito Yamazaki
  • Publication number: 20130143155
    Abstract: To provide a toner, including: a crystalline binder resin including a urethane bond or a urea bond, or both thereof, and a colorant, wherein the colorant has a number-average particle diameter of 0.5 ?m or less, and a ratio of particles having a particle diameter of 0.7 ?m or greater in a number-size distribution of the colorant is 5% by number or less.
    Type: Application
    Filed: November 19, 2012
    Publication date: June 6, 2013
    Inventors: Hideyuki SANTO, Shinya NAKAYAMA, Atsushi YAMAMOTO, Daiki YAMASHITA, Suzuka AMEMORI
  • Publication number: 20130143153
    Abstract: A transparent electrostatic charge image developing toner satisfies the relationships of the following Formulas (1), (2), and (3) wherein Dt (?m) is a volume average particle diameter, upper GSDv is an upper volume particle size distribution index, and lower GSDp is a lower number particle size distribution index: Formula (1): 18?Dt?30; Formula (2): 1.05?upper GSDv?1.20; and Formula (3): 1.29?lower GSDp?1.50.
    Type: Application
    Filed: April 12, 2012
    Publication date: June 6, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Tsuyoshi MURAKAMI, Satoshi YOSHIDA
  • Patent number: 8455166
    Abstract: A radiation curable toner is described having at least a radiation curable binder (e.g. a UV curable polymer), a photoinitiator, and a wax; wherein the wax is present in a concentration ranging from 0.3 to 3% by weight. The ratio of scratch resistance before curing is preferably at least 2. The toner may be used in a developer, e.g. a two-component developer, for printing or copying.
    Type: Grant
    Filed: July 24, 2008
    Date of Patent: June 4, 2013
    Assignee: Xeikon Manufacturing N.V.
    Inventors: Werner Op De Beeck, Michel Vervoort, Lode Deprez
  • Patent number: 8455169
    Abstract: The toner includes a binder resin; a colorant; and a release agent. The first inter-particle force Fp(A) of the toner, which is measured under an environmental condition of 23° C. and 60% RH after the toner is pressed for 1 minute at 25° C. under a compression stress of 15 kg/cm2, is from 1.0×10?9 (N) to 1.0×10?6 (N). The difference (Fp(B)?Fp(A)) between the second inter-particle force Fp(B) of the toner, which is measured under the environmental condition of 23° C. and 60% RH after the toner is pressed for 1 minute at 50° C. under a compression stress of 15 kg/cm2, and the first inter-particle force Fp(A) is 0 (N) to 1.0×10?7 (N).
    Type: Grant
    Filed: June 23, 2010
    Date of Patent: June 4, 2013
    Assignee: Ricoh Company, Limited
    Inventors: Daisuke Inoue, Fumihiro Sasaki, Osamu Uchinokura, Satoshi Kojima, Hideki Sugiura, Naoko Morisawa
  • Publication number: 20130122416
    Abstract: A releasing fluid is disclosed. The releasing fluid includes: an end functional polydimethylsiloxane formed of Formula (i): a pendent functional polydimethlysiloxane formed of Formula (ii): a combination of end and pendent functional siloxane formed of Formula (iii): and wherein the release fluid comprises less than 0.5% by weight of the sum of Formula (i) where e+g>1 and Formula (iii) where e+g are >1.
    Type: Application
    Filed: November 16, 2011
    Publication date: May 16, 2013
    Inventor: Jerry Alan Pickering
  • Patent number: 8431293
    Abstract: A method of recycling an image forming material comprising the steps of holding a toner image formed by employing toner particles in a toner holding layer formed on an image supporting substrate to form a first generation image print, separating the toner particles from the first generation image print; and recycling the separated toner particles to form a second generation image print by holding a toner image formed by employing the separated toner particles in a toner holding layer formed on an image supporting substrate, provided that the image forming material comprises at least toner particles, wherein Condition (1) 0.9?B/A?0.1 and Condition (2) 1?C/A?0.9 are satisfied, A, B and C representing particle shape factors of original toner particles, toner particles held in the image holding layer of the first generation image print; and separated toner particles, respectively.
    Type: Grant
    Filed: April 26, 2010
    Date of Patent: April 30, 2013
    Assignee: Konica Minolta Business Technologies, Inc.
    Inventors: Mitsutoshi Nakamura, Shigenori Kouno, Masaharu Matsubara
  • Publication number: 20130084520
    Abstract: An electrostatic image developing toner of the exemplary embodiment of the invention contains an amorphous first polyester resin of a polycondensation product of at least a carboxylic acid component and an alcohol component containing rosin, and a second polyester resin having the difference (absolute value) in parameter of solubility relative to the first polyester resin of from about 0.3 (cal/cm3)1/2 to about 3 (cal/cm3)1/2.
    Type: Application
    Filed: September 25, 2012
    Publication date: April 4, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: FUJI XEROX CO., LTD.
  • Patent number: 8404424
    Abstract: Printed products, printing methods and methods for verifying authenticity of a printed product are provided. In one aspect, the printed product has a receiver and an image formed thereon by an electrophotographic process using toner particles, said image having at least one raised portion, wherein at least parts of said raised portion of said image comprise phosphorescent or fluorescent toner particles.
    Type: Grant
    Filed: February 8, 2011
    Date of Patent: March 26, 2013
    Assignee: Eastman Kodak Company
    Inventors: Detlef Schulze-Hagenest, Dinesh Tyagi
  • Publication number: 20130071784
    Abstract: A toner for developing an electrostatic charge image includes an aliphatic polyester resin and a polyester resin having a repeating unit derived from rosin diol.
    Type: Application
    Filed: August 13, 2012
    Publication date: March 21, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Hirotaka MATSUOKA, Yuki SASAKI, Sumiaki YAMASAKI, Satoshi HIRAOKA
  • Patent number: 8390882
    Abstract: A method for estimating the color of a coated print includes: measuring the color of an uncoated print with a color measuring device; and estimating the color of the print when coated by a coating process based on the uncoated color measurement using a function that correlates uncoated color measurements and coated color measurements; and adjusting at least one parameter of the printing process based on the coated color estimation. The correlating function may be derived by measuring the color of a plurality of uncoated color patches; measuring the color of the plurality of patches after the patches have been coated by the coating process; and correlating the color of the coated patches with the uncoated patches based on the coated and uncoated color patch measurements.
    Type: Grant
    Filed: August 7, 2009
    Date of Patent: March 5, 2013
    Assignee: Xerox Corporation
    Inventors: Edul N. Dalal, Lalit Keshav Mestha
  • Publication number: 20130029264
    Abstract: An electrostatic image developing toner contains toner particles containing a polyester resin having a repeating unit deriving from a dicarboxylic acid and a repeating unit deriving from a rosin diol, and an external additive containing silica particles, wherein a weight average molecular weight (Mw) of the soluble matter in tetrahydrofuran of the toner is from about 60,000 to about 200,000.
    Type: Application
    Filed: September 25, 2012
    Publication date: January 31, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: FUJI XEROX CO., LTD.
  • Publication number: 20130022908
    Abstract: There is provided a polyester resin for a toner, including: a polycondensate of a polyvalent carboxylic acid component and a polyhydric alcoholic component, wherein the polyhydric alcoholic component contains a rosin diol represented by the following Formula (1) and a content of the rosin diol is 80 mole % to 100 mole % based on the total polyhydric alcoholic component. wherein, each of R1 and R2 independently represents a hydrogen atom or a methyl group; L1 represents a divalent linking group having the following Formula (I); each of L2 and L3 independently represents a divalent linking group selected from the group consisting of carbonyl groups, carboxyl groups, ether groups, sulfonyl groups, substituted or unsubstituted chained alkylene groups, substituted or unsubstituted cyclic alkylene groups, substituted or unsubstituted arylene groups, and combinations thereof; and each of A1 and A2 independently represents a rosin ester group.
    Type: Application
    Filed: September 25, 2012
    Publication date: January 24, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: FUJI XEROX CO., LTD.
  • Publication number: 20130022905
    Abstract: An electrostatic image developing toner includes (A) an amorphous polyester resin containing at least a repeating unit derived from a dicarboxylic acid component and a repeating unit derived from a dialcohol component represented by the specific formula, and (B) an amorphous polyester resin differing in the weight average molecular weight from the amorphous polyester resin (A), wherein the difference (absolute value) in the weight average molecular weight between the amorphous polyester resin (A) and the amorphous polyester resin (B) is from about 30,000 to about 100,000.
    Type: Application
    Filed: September 25, 2012
    Publication date: January 24, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: FUJI XEROX CO., LTD.
  • Publication number: 20130022903
    Abstract: A photoreceptor including an electroconductive substrate; and a photosensitive layer overlying the electroconductive substrate, wherein the uppermost surface layer of the photosensitive layer has a three-dimensional cross-linked product formed by polymerization reaction of a charge transport compound A represented by the following Chemical Structure 1 and a charge transport compound B having three or more [tetrahydro-2H-pyran-2-yl)oxy]methyl groups linked with aromatic rings in which part of the [tetrahydro-2H-pyran-2-yl)oxy]methyl groups is severed and detached. In the Chemical Structure 1, Ar1 represents an aromatic hydrocarbon group having 6 to 20 carbon atoms that may have an alkyl group having one to four carbon atoms as a substitution group.
    Type: Application
    Filed: July 19, 2012
    Publication date: January 24, 2013
    Inventors: Yuuji TANAKA, Kazukiyo Nagai, Tetsuro Suzuki, Yuusuke Koizuka
  • Publication number: 20130022906
    Abstract: A polyester resin for a toner including: a repeating unit derived from a dicarboxylic acid component; and a repeating unit derived from a diol component represented by Formula 1: wherein each of R1 and R2 independently represents a hydrogen atom or a methyl group, each of L1, L2 and L3 independently represents a divalent linking group selected from the group consisting of carbonyl groups, ester groups, ether groups, sulfonyl groups, substituted or unsubstituted chained alkylene groups, substituted or unsubstituted cyclic alkylene groups, substituted or unsubstituted arylene groups, and combinations thereof, L1 and L2 or L1 and L3 optionally forms a ring, and each of A1 and A2 independently represents a rosin ester group, wherein the solubility parameter (SP) value is from 9.1 to 9.7.
    Type: Application
    Filed: September 25, 2012
    Publication date: January 24, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventor: FUJI XEROX CO., LTD.
  • Publication number: 20130017482
    Abstract: An electrostatic image developing carrier includes a ferrite particle that contains magnesium element in an amount of about 3.0 wt % or more and about 10.0 wt % or less and manganese element in an amount of about 0.2 wt % or more and less than about. 1.0 wt %; and a resin layer that covers the ferrite particle.
    Type: Application
    Filed: September 14, 2012
    Publication date: January 17, 2013
    Applicant: FUJI XEROX CO., LTD.
    Inventors: Yosuke TSURUMI, Rieko KATAOKA