Identified Toner, I.e., Identified Resin Coated Pigment, Etc. Patents (Class 430/114)
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Patent number: 9012119Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.Type: GrantFiled: August 29, 2013Date of Patent: April 21, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Keitaro Mori, Satoshi Tatsuura, Yutaka Nogami
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Publication number: 20150093700Abstract: A liquid developer set of the present invention includes a first liquid developer including an insulating liquid and first toner particles and a second liquid developer including an insulating liquid and second toner particles, the first toner particles include carbon black and a first resin, the second toner particles include a coloring agent other than carbon black and a second resin, without including carbon black, the first resin and the second resin each include a hydrocarbon long chain which is a hydrocarbon group having a carbon number of 8 to 30, and a mass ratio of the hydrocarbon long chain to the first toner particles is higher than a mass ratio of the hydrocarbon long chain to the second toner particles.Type: ApplicationFiled: September 22, 2014Publication date: April 2, 2015Applicant: Konica Minolta, Inc.Inventors: Keiko MOMOTANI, Naoki YOSHIE, Yukiko UNO, Masaaki OKA
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Publication number: 20150086919Abstract: A resin in a liquid developer contains 80 mass % or more of a urethane-modified polyester resin. A component derived from a polyester resin contains a constitutional unit derived from an acid component and a constitutional unit derived from an alcohol component. A ratio of a constitutional unit derived from an aliphatic monomer occupied in the constitutional unit derived from the acid component and the constitutional unit derived from the alcohol component is not lower than 90 mass %. Relation of |Tm1?Tm5|?20° C. (70° C.?Tm1?170° C., 60° C.?Tm5?120° C.) is satisfied, where Tm1 (° C.) represents a softening temperature T1/2 of toner particles measured with a flow tester under a load of 1 kg and Tm5 (° C.) represents a softening temperature T1/2 of toner particles measured with a flow tester under a load of 5 kg.Type: ApplicationFiled: September 17, 2014Publication date: March 26, 2015Applicant: Konica Minolta, Inc.Inventors: Naoki YOSHIE, Keiichiro HIGASHI
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Patent number: 8974996Abstract: A liquid developer used for wet-type image forming apparatuses includes toner particles and an insulating liquid, the toner particles include a resin, a pigment, and a pigment dispersant, the pigment includes a pigment having an acid group, and the pigment dispersant is a basic polymer dispersant including units derived from ?-caprolactone.Type: GrantFiled: November 1, 2012Date of Patent: March 10, 2015Assignee: Konica Minolta Business Technologies, Inc.Inventors: Naoki Yoshie, Kenji Hayashi, Chiaki Yamada, Keiko Momotani, Masahiro Anno, Yuya Kubo, Miyuki Hotta
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Patent number: 8974997Abstract: The present disclosure is drawn to LEP toners, systems, and methods of manufacturing LEP liquid toners. Specifically, a high NVS liquid toner can comprise a ground up admixture of a hydrocarbon carrier fluid, pigment particles, and a polymer paste having an NVS content of about 38 wt % to about 65 wt %. The resultant high NVS liquid toner has an NVS content of about 28 wt % to about 38 wt % and a viscosity of about 3,000 cPs to about 25,000 cPs.Type: GrantFiled: October 4, 2010Date of Patent: March 10, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Eyal Bachar, Swissa Shay, Yaron Grinwald, Merav Shapira, Albert Teishev, Nava Klein
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Patent number: 8940469Abstract: A liquid developer for electrography, comprising toner particles dispersed in a liquid carrier, wherein the toner particles include a pigment, a thermoplastic resin, and an organic filler, which organic filler is reactive with groups of the thermoplastic resin and incompatible with the liquid carrier.Type: GrantFiled: October 13, 2006Date of Patent: January 27, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Albert Teishev, Stalla Stolin Rodith, Michael Shishkin
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Patent number: 8932791Abstract: A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein.Type: GrantFiled: January 31, 2011Date of Patent: January 13, 2015Assignee: Hewlett-Packard Development Company, L.P.Inventors: Doris Pik-Yiu Chun, Hou T. Ng, Albert Teishev
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Patent number: 8911925Abstract: 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: GrantFiled: August 21, 2012Date of Patent: December 16, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Masahiro Oki, Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba
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Publication number: 20140363764Abstract: A novel liquid toner development system is disclosed. The liquid development system includes conductive core-shell particles comprising silver-copper or copper-silver. A novel apparatus and method relying on the novel liquid toner development system results in electro-conductive patterning capable of high conductivity with low background fogging, reduced processing time and reduced environmental impact.Type: ApplicationFiled: November 27, 2013Publication date: December 11, 2014Applicant: AFIT CorporationInventors: Ichiro Yoshida, Shuji Iino
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Publication number: 20140363208Abstract: The present invention relates to a liquid electrophotographic ink comprising a carrier liquid, a pigmented resin composite dispersed in the carrier liquid, and about 0.15 to about 10% (w/w) of an organic wax. The liquid electrophotographic ink is typically formulated for printing in a liquid electrophotographic printer.Type: ApplicationFiled: December 19, 2011Publication date: December 11, 2014Applicant: Hewlett-Packard Indigo B.V.Inventors: Stella Stolin Roditi, Haim Cohen, Getahun Biadglin, Femanda Orilik, Nava Klein, Albert Teishev
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Patent number: 8895219Abstract: An ink is disclosed. The ink includes a carrier fluid; an encapsulated metallic pigment particle further including a metallic pigment particle and a polymer, wherein the polymer covers between 70% and 100%, inclusive, of the surface area of the metallic pigment particle and wherein the morphology of the metallic pigment particle by itself is substantially the same as the morphology of the metallic pigment particle covered by the polymer; and a polymer resin.Type: GrantFiled: April 30, 2012Date of Patent: November 25, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Hou T. Ng, Albert Teishev
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Publication number: 20140287356Abstract: A liquid developer includes a toner that contains a binder resin and a release agent, and a carrier liquid that has a difference (?SP (tc)) in SP value from the binder resin of from 1.5 to 7.0, wherein the release agent is not eluted in the carrier liquid at a temperature lower than a glass transition temperature of the binder resin.Type: ApplicationFiled: August 29, 2013Publication date: September 25, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Keitaro MORI, Satoshi TATSUURA, Yutaka NOGAMI
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Publication number: 20140272693Abstract: A toner includes a crystalline polyester resin having an unsaturated double bond, a thiol compound having a bi- or more-functional thiol group, and a photopolymerization initiator.Type: ApplicationFiled: August 8, 2013Publication date: September 18, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Koji HORIBA, Yoshihiro INABA, Daisuke YOSHINO, Takako KOBAYASHI, Akira IMAI, Masahiro OKI, Hiroyuki MORIYA
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Publication number: 20140234771Abstract: The present invention provides an electrostatic ink composition comprising a carrier liquid, a resin, a pigment and a conductive polymer. Method for producing the electrostatic ink composition and methods for printing the composition are also disclosed.Type: ApplicationFiled: September 30, 2011Publication date: August 21, 2014Applicant: Hewlett-Packard Indigo B.V.Inventors: Gil Bar-Haim, Anatoly Sobolevsky, Yaron Grinwald
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Publication number: 20140186764Abstract: A method for producing a liquid developer containing toner particles containing a resin containing a polyester and a pigment, and an insulating liquid, wherein the toner particles are dispersed in the insulating liquid, including: step 1: melt-kneading the resin and the pigment, and pulverizing a melt-kneaded mixture to provide toner particles; step 2: dispersing the toner particles obtained in the step 1 in the insulating liquid in the presence of a basic dispersant to provide a dispersion of toner particles; and step 3: wet-milling the dispersion of toner particles obtained in the step 2 to provide a liquid developer, wherein the basic dispersant is an amide compound obtained by a reaction between a polyethyleneimine and a polyester (D) obtained by self-condensation of 12-hydroxystearic acid.Type: ApplicationFiled: December 26, 2013Publication date: July 3, 2014Applicant: Kao CorporationInventors: Tatsuya YAMADA, Hiromi Ito, Yoko Hanada
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Publication number: 20140186763Abstract: A liquid developer containing toner particles containing a resin and a pigment, and an insulating liquid, the toner particles being dispersed in the insulating liquid, wherein the insulating liquid contains an olefin having 12 carbon atoms or more and 18 carbon atoms or less in an amount of 10% by mass or more. The liquid developer of the present invention can be 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: ApplicationFiled: December 20, 2013Publication date: July 3, 2014Applicant: Kao CorporationInventors: Tatsuya YAMADA, Shingo TAKADA
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Publication number: 20140170556Abstract: A liquid developer includes a carrier liquid having insulation property, colored particles, and an organic high molecular compound. The organic high molecular compound is dissolved in the carrier liquid. The organic high molecular compound includes elastomer A that is a styrene-butadiene-based elastomer not having an acid group or a basic group and elastomer B that is a styrene-based elastomer having an acid group or a basic group. A content of the elastomer A in the liquid developer is 6% by mass or more and 8% by mass or less, and a content of the elastomer B in the liquid developer is 0.4% by mass or more and 0.8% by mass or less. The colored particles include aniline black.Type: ApplicationFiled: December 17, 2013Publication date: June 19, 2014Applicant: Kyocera Document Solutions Inc.Inventor: Katsuki OSANISHI
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Patent number: 8741527Abstract: A liquid developer includes: a carrier liquid; and toner particles that are dispersed in the carrier liquid and that includes a styrene-based thermoplastic elastomer, a styrene-based thermoplastic resin, and a quaternary ammonium base-containing polymer having a constituent unit expressed by Chemical Formula I: wherein R1 represents hydrogen or an alkyl group with a carbon number equal to or less than 3, R2 represents an alkylene group with a carbon number equal to or less than 18, R3 to R5 represent an alkyl group or an aralkyl group with a carbon number equal to or less than 18, X represents —COO— or —CONH—, and Y? represents a halogen ion or an anion having a —COO— group or a —SO3— group in the structure thereof.Type: GrantFiled: December 28, 2011Date of Patent: June 3, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba, Takahiro Ishizuka, Masahiro Oki, Ryosaku Igarashi
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Publication number: 20140147172Abstract: A deinkable liquid toner is disclosed herein. The deinkable liquid toner includes a non-polar carrier fluid, a styrene-alkyl acrylate, and a colorant. The styrene-alkyl acrylate has a glass transition temperature ranging from about 65 C to about 100 C. A method for making the deinkable liquid toner and a printing system are also disclosed herein.Type: ApplicationFiled: July 26, 2011Publication date: May 29, 2014Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.Inventors: Hou T. Ng, Sivapackia Ganapathiappan, Albert Teishev
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Publication number: 20140134536Abstract: A liquid developer includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the resin includes a crystalline resin, the pigment includes a first pigment, a second pigment, and a third pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, the third pigment is nigrosine, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: ApplicationFiled: November 7, 2013Publication date: May 15, 2014Applicant: Konica Minolta, Inc.Inventors: Chiaki YAMADA, Masahiro Anno, Sho Kim, Yukiko Uno
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Publication number: 20140134537Abstract: A liquid developer is characterized in that it includes toner particles and an insulating liquid, the toner particles include a resin and a pigment, the pigment includes a first pigment and a second pigment, the first pigment is carbon black, the second pigment is C.I. Pigment Brown 23 and/or C.I. Pigment Brown 25, and 20 to 60% by mass of the pigment is included relative to the toner particles.Type: ApplicationFiled: November 7, 2013Publication date: May 15, 2014Applicant: Konica Minolta, Inc.Inventors: Chiaki YAMADA, Masahiro Anno, Sho Kim, Yukiko Uno
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Patent number: 8722302Abstract: The present invention provides a method for producing a liquid developer for electrophotography or electrostatic recording obtained by a coacervation method, which sufficiently maintains the charging property and has good dispersion stability of colored resin particles, as well as a liquid developer obtained by the method. A method for producing a liquid developer by a coacervation method, wherein a colored resin particle is dispersed in an insulating hydrocarbon dispersion medium in the presence of a particle dispersant and an acid group-containing resin, and the particle dispersant is a reaction product of a polyamine compound and a self-condensation product of a hydroxycarboxylic acid.Type: GrantFiled: September 26, 2008Date of Patent: May 13, 2014Assignee: Sakata Inx Corp.Inventors: Hirohito Maeda, Katsutoshi Okamoto, Takaaki Yodo, Naoya Inazumi, Koji Iwase
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Publication number: 20140093821Abstract: A method of producing a liquid developer containing an insulation liquid and toner particles is provided. The method includes: grinding a toner material under the presence of a substance A in the insulation liquid; subjecting a dispersion liquid to a heat treatment at a higher temperature than a glass transition temperature of a resin material while giving shear force to the dispersion liquid: and mixing the dispersion liquid having been subjected to the heat treatment with a substance B. A liquid developer including an insulation liquid, toner particles, and a substance B is also provided. The toner particles are constituted of a substance A, a resin material and a coloring agent. The resin material is a polyester resin and/or a styrene-acrylic resin. The substance A is an acrylic modified silicone sufficiently soluble to the insulation liquid and the substance B is a silanol group-containing polysiloxane and/or a fluorine modified silicone.Type: ApplicationFiled: September 25, 2013Publication date: April 3, 2014Applicants: Shin-Etsu Chemical Co., Ltd., SEIKO EPSON CORPORATIONInventors: Tsutomu TERAOKA, Fuminori YANO, Masanao KAMEI
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Patent number: 8685610Abstract: A printing method comprising: forming a first image utilizing a liquid toner comprising carrier liquid and pigmented polymer particles having a first color; transferring the first image to an intermediate transfer member; forming at least one additional image utilizing a liquid toner comprising at least one carrier liquid and pigmented polymer particles having a second color, different from the first color; transferring the at least one additional image to the intermediate transfer member overlaid on the first image, to form a composite image on the intermediate transfer member; and further transferring the composite image to a further substrate, wherein said polymer particles in said first liquid toner and in at least one of said additional liquid toners have different compositions, aside from colorants, the differences in composition including at least one of different polymers or blends of polymers, different amounts or types of placticizers, different amounts of solvated liquid and different compositionsType: GrantFiled: April 2, 2009Date of Patent: April 1, 2014Assignee: Hewlett-Packard Indigo B.V.Inventors: Galia Golodetz, Benzion Landa, Yosef Cohen, Ehud Chatow, Paul Fenster
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Publication number: 20140087304Abstract: Toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. Heat of fusion with differential scanning calorimetry of the second resin satisfies Equations (1) to (2) below. In Equations (1) to (2) below, H1 and H2 represent heats of fusion (J/g) at initial temperature increase and second temperature increase with differential scanning calorimetry of the second resin, respectively. 5?H1?70??Equation (1) 0.2?H2/H1?1.Type: ApplicationFiled: September 24, 2013Publication date: March 27, 2014Applicant: Konica Minolta, Inc.Inventors: Yukiko Uno, Satoshi Matsumoto, Naoki Yoshie, Chiaki Yamada
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Publication number: 20140087302Abstract: In a liquid developer in which toner particles are dispersed in an insulating liquid, the toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The second resin particles further contain a pigment and a dispersant for pigment, and solubility of the dispersant for pigment in the insulating liquid is not higher than 10 mass % at 25° C.Type: ApplicationFiled: September 18, 2013Publication date: March 27, 2014Applicant: Konica Minolta, Inc.Inventors: Sho KIM, Satoshi MATSUMOTO, Naoki YOSHIE, Kenji HAYASHI
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Publication number: 20140087303Abstract: A liquid developer is obtained by dispersing toner particles containing at least a resin and a coloring agent in an insulating liquid. The toner particles have a core-shell structure that first resin particles containing a first resin are attached to or cover surfaces of second resin particles containing a second resin. The coloring agent contains nigrosine. A content of nigrosine in the toner particles is not lower than 1 mass % and not higher than 20 mass %. The second resin satisfies Equations (1) to (2) below. In Equations (1) to (2), x represents a number average molecular weight of the second resin and y represents a urethane group concentration (mass %) in the second resin. ?0.00003x+2.03?y??0.00003x+6.Type: ApplicationFiled: September 24, 2013Publication date: March 27, 2014Applicant: Konica Minolta, Inc.Inventors: Kenji HAYASHI, Masahiro ANNO, Yukiko UNO, Satoshi MATSUMOTO
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Patent number: 8679370Abstract: A conductive coating is described, suitable for coating a developer, charge or transfer roller in a developing apparatus to give a charge providing layer. The coating comprises a conductive polymer in a matrix. A roller is also described, suitable for a developing apparatus comprising, from the center to the periphery, a conductive mandrel, a conductive elastic base layer and a charge providing layer.Type: GrantFiled: March 13, 2013Date of Patent: March 25, 2014Assignee: Ten Cate Enbi International B.V.Inventors: John Jansen, Tsuyoshi Tokiwa, Eiji Sawa
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Patent number: 8673531Abstract: The present invention provides a liquid developer including an insulating carrier liquid and toner particles containing a binder resin, the binder resin including a styrene-based thermoplastic elastomer and a styrene thermoplastic resin, and the toner particles being dispersed in the insulating carrier liquid.Type: GrantFiled: May 31, 2011Date of Patent: March 18, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Yoshihiro Inaba, Akira Imai, Daisuke Yoshino, Takako Kobayashi, Koji Horiba, Ryosaku Igarashi
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Patent number: 8669034Abstract: Toner compositions, treated fluoropolymer particles, methods of making treated fluoropolymer particles, and the like, are disclosed.Type: GrantFiled: October 7, 2008Date of Patent: March 11, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Elliad Silcoff, Gili Assaf, Gil Bar-Haim, Albert Teishev
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Patent number: 8669037Abstract: A method of manufacturing a liquid electrophotographic ink includes: mixing a first portion of a carrier fluid and a resin to form a resin mixture; heating the resin mixture until the resin has melted; cooling the resin mixture to form a resin cake, followed by pulverizing the resin cake to form a resin powder; and mix the resin powder with a pigment and a second portion of carrier fluid in a microfluidizer to form a concentrating ink containing composite particles. An alternate method of manufacturing a liquid electrophotographic ink includes: mixing a pigment with a resin powder; and microfluidizing the mixture together with a carrier fluid in a microfluidizer in a number of passes to form a concentrated ink containing composite particles.Type: GrantFiled: April 26, 2012Date of Patent: March 11, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventors: Sivapackia Ganapathiappan, Hou T. Ng, Albert Teishev
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Patent number: 8658338Abstract: 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: GrantFiled: August 17, 2012Date of Patent: February 25, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Koji Horiba, Takahiro Ishizuka, Yoshihiro Inaba, Akira Imai, Ryosaku Igarashi, Takako Kobayashi, Daisuke Yoshino, Masahiro Oki
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Publication number: 20140030651Abstract: The present disclosure is drawn to a liquid toner composition comprising: (a) a carrier liquid; (b) particles comprising (i) a first component comprising a polymer having acidic side groups; and (ii) a second component comprising a polymer having ester side groups; and (c) a charge director. Also described herein are a method of producing a liquid toner composition and a method of electrophotographic printing using a liquid toner composition.Type: ApplicationFiled: March 30, 2011Publication date: January 30, 2014Inventors: Stella Stolin Roditi, Fernanda Orlik, Haim Cohen, Albert Teishev, Nava Klein
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Patent number: 8637218Abstract: A carrier for developing electrostatic latent image, including a core material; and a coated layer covering the core material, including a binder resin and a particulate material, wherein the core material is exposed on the surface of the carrier at an areal ratio of from 0.1 to 5.0% and has the largest exposed part having an areal ratio not greater than 0.03%, and wherein the coated layer comprises the particulate material in an amount of from 100 to 500 parts by weight per 100 parts by weight of the binder resin.Type: GrantFiled: July 24, 2012Date of Patent: January 28, 2014Assignee: Ricoh Company, Ltd.Inventors: Koichi Sakata, Shigenori Yaguchi, Kimitoshi Yamaguchi, Toyoshi Sawada, Hiroshi Tohmatsu, Hiroyuki Kishida
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Patent number: 8628906Abstract: A method of printing, comprising: a) developing a latent image on a photosensitive surface with a visible toner, thereby producing a visible toner image; b) transferring the visible toner image to a surface of an intermediate transfer member; c) applying a layer of an adhesive material over at least a portion of the visible toner on the intermediate transfer member, but substantially not to any part of the surface of the intermediate transfer member which is not covered with the visible toner; and d) transferring the visible toner image and the layer of adhesive material from the intermediate transfer member to a printing medium, thereby causing the visible toner to adhere better to the printing medium than it would without the layer of adhesive material, wherein the adhesive material has a stronger adhesion to the printing medium than the visible toner.Type: GrantFiled: April 27, 2007Date of Patent: January 14, 2014Assignee: Hewlett-Packard Development Company, L.P.Inventor: Ofer Thaler
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Patent number: 8617783Abstract: An ink contains dispersed particles, individually including at least one thermoplastic first resin exhibiting a MFI less than or equal to 100, at least one thermoplastic second resin exhibiting a MFI greater than 100, and a white pigment. A liquid toner producing method includes forming a paste containing the resins, combining the paste with a white pigment, and after combining the paste and pigment, applying a shear force, encapsulating the pigment, and dispersing the encapsulated pigment. A digital printing method includes providing a liquid marking agent containing charged particles dispersed in a carrier liquid, individual particles including at least one thermoplastic first resin and at least one thermoplastic second resin encapsulating a white pigment, and printing a hard image on a substrate. At least a portion of the image has a white color.Type: GrantFiled: July 23, 2009Date of Patent: December 31, 2013Assignee: Hewlett-Packard Indigo B.V.Inventors: Galia Golodetz, Gal Victor
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Patent number: 8592125Abstract: Provided is a liquid developer containing toner particles and an insulating liquid containing an epoxy modified fatty acid alkyl ester.Type: GrantFiled: February 18, 2010Date of Patent: November 26, 2013Assignee: Seiko Epson CorporationInventor: Takashi Teshima
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Patent number: 8592126Abstract: A liquid developer contains a liquid insulator formed of a liquid hydrocarbon, toner particles formed by chemically modifying surfaces of mother toner particles formed of a material containing a rosin-based resin and a polyester resin with a polyalkyleneimine, and a metal soap dissolved in the liquid insulator.Type: GrantFiled: January 19, 2011Date of Patent: November 26, 2013Assignee: Seiko Epson CorporationInventors: Yoshihiro Ueno, Masahiro Oki, Tsutomu Teraoka, Ken Ikuma
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Publication number: 20130302733Abstract: A liquid electrophotographic ink is disclosed herein. One example of the liquid electrophotographic ink includes a non-polar carrier liquid; pigmented toner particles; a charge director; and polymer resin encapsulated metal oxide nanoparticles. A method for making the liquid electrophotographic ink is also disclosed herein.Type: ApplicationFiled: January 31, 2011Publication date: November 14, 2013Inventors: Doris Pik-Yiu Chun, Hou T. Ng, Albert Teishev
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Patent number: 8577256Abstract: 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: GrantFiled: September 14, 2012Date of Patent: November 5, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Yosuke Tsurumi, Rieko Kataoka
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Publication number: 20130288176Abstract: An ink is disclosed. The ink includes a carrier fluid; an encapsulated metallic pigment particle further including a metallic pigment particle and a polymer, wherein the polymer covers between 70% and 100%, inclusive, of the surface area of the metallic pigment particle and wherein the morphology of the metallic pigment particle by itself is substantially the same as the morphology of the metallic pigment particle covered by the polymer; and a polymer resin.Type: ApplicationFiled: April 30, 2012Publication date: October 31, 2013Inventors: Sivapackia Ganapathiappan, Hou T. Ng, Albert Teishev
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Patent number: 8563210Abstract: A liquid electrophotographic ink concentrate includes non-volatile solids present in an amount ranging from about 20% to about 70% of the ink concentrate, the non-volatile solids including encapsulated pigment particles having a particle size ranging from about 500 nm to about 20 ?m, and a viscosity modifier. The ink concentrate includes a balance of a liquid composition, the liquid composition including a carrier. The concentrate is dispersible in an ink vehicle to form a print-ready liquid electrophotographic ink having the non-volatile solids present in an amount ranging from about 0.5% to 5% of the print-ready liquid electrophotographic ink.Type: GrantFiled: April 18, 2013Date of Patent: October 22, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Doris Pik-Yiu Chun, Sivapackia Ganapathiappan, Hou T. Ng, Albert Teishev
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Patent number: 8563209Abstract: A liquid developer includes: a carrier liquid and toner particles dispersed in the carrier liquid, including a binder resin which contains a thermoplastic resin having repeating units derived from a monomer having a styrene skeleton and repeating units derived from a monomer having an acrylic ester structure, and a thermoplastic elastomer resin that is a block copolymer, the block copolymer having a first block portion including repeating units derived from a monomer having a styrene skeleton, a second block portion including repeating units derived from an alkene having 2 to 6 carbon atoms, and a third block portion including repeating units derived from a monomer having a styrene skeleton and these block portions being bonded in this order.Type: GrantFiled: August 18, 2011Date of Patent: October 22, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Koji Horiba, Yoshihiro Inaba, Ryosaku Igarashi, Akira Imai, Takako Kobayashi, Daisuke Yoshino, Takahiro Ishizuka
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Patent number: 8524435Abstract: A liquid developer containing an electrically insulating carrier fluid and colored particles dispersed in the carrier fluid and a wet-type image forming apparatus using this liquid developer are provided, with the colored particles being pigments and this liquid developer containing at least one selected from a group consisting of styrene elastomer, polyvinyl butyral, cyclic olefin copolymer and cellulose ether. Additionally, a liquid developer containing an electrically insulating carrier fluid, colored particles dispersed in the carrier fluid, and an organic macromolecular compound for fixing the colored particles to a recording medium and a wet-type image forming apparatus using this liquid developer are provided, with the organic macromolecular compound being dissolved in the carrier fluid and the colored particles being pigments.Type: GrantFiled: March 14, 2011Date of Patent: September 3, 2013Assignee: Kyocera Mita CorporationInventors: Jumpei Hobo, Katsuki Osanishi
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Publication number: 20130223887Abstract: The present disclosure is drawn to LEP toners, systems, and methods of manufacturing LEP liquid toners. Specifically, a high NVS liquid toner can comprise a ground up admixture of a hydrocarbon carrier fluid, pigment particles, and a polymer paste having an NVS content of about 38 wt % to about 65 wt %. The resultant high NVS liquid toner has an NVS content of about 28 wt % to about 38 wt % and a viscosity of about 3,000 cPs to about 25,000 cPs.Type: ApplicationFiled: October 4, 2010Publication date: August 29, 2013Applicant: Hewlett-Packard Development Company, L.P.Inventors: Eyal Bachar, Swissa Shay, Yaron Grinwald, Merav Shapira, Albert Teishev, Nava Klein
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Publication number: 20130216943Abstract: 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: ApplicationFiled: August 17, 2012Publication date: August 22, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Koji HORIBA, Takahiro ISHIZUKA, Yoshihiro INABA, Akira IMAI, Ryosaku IGARASHI, Takako KOBAYASHI, Daisuke YOSHINO, Masahiro OKI
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Patent number: 8512930Abstract: A matte liquid toner suitable for use in a liquid toner printer, comprising a carrier liquid, toner particles comprising a resin and substantially uncolored additive particles of average diameter between 1 and 20 micrometers dispersed in the resin.Type: GrantFiled: December 8, 2003Date of Patent: August 20, 2013Assignee: Hewlett-Packard Development Company, L.P.Inventors: Ehud Chatow, Haim Victor Gal, Galia Golodetz
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Patent number: 8501381Abstract: The invention relates to a liquid developer composition comprising a dispersant, and toner particles dispersed in said dispersant. The liquid developer composition can be used for printing onto a substrate. The binder resin in the toner particles is curable, e.g. by UV-light.Type: GrantFiled: March 19, 2008Date of Patent: August 6, 2013Assignee: Hologi Hitec-Imaging GmbHInventors: Hans-Josef Humpert, Serge Tavernier, Kerstin Hymon
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Publication number: 20130196258Abstract: A toner includes a binder resin including an amorphous polyester resin (A), a crystalline polyester resin (B), and a polyurethane thermoplastic elastomer (C).Type: ApplicationFiled: July 24, 2012Publication date: August 1, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Yoshihiro INABA, Daisuke YOSHINO, Akira IMAI, Takako KOBAYASHI, Koji HORIBA, Masahiro OKI, Ryosaku IGARASHI
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Publication number: 20130115552Abstract: A liquid developer used for wet-type image forming apparatuses includes toner particles and an insulating liquid, the toner particles include a resin, a pigment, and a pigment dispersant, the pigment includes a pigment having an acid group, and the pigment dispersant is a basic polymer dispersant including units derived from ?-caprolactone.Type: ApplicationFiled: November 1, 2012Publication date: May 9, 2013Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Naoki YOSHIE, Kenji HAYASHI, Chiaki YAMADA, Keiko MOMOTANI, Masahiro ANNO, Yuya KUBO, Miyuki HOTTA