Using Identified Toner (e.g., Identified Colorant, Toner Property, Etc.) Patents (Class 430/123.5)
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Patent number: 11049420Abstract: A label sheet assembly and method is disclosed for improving the process of feeding label sheets through a printer. The label sheet assembly may include a facestock layer and a liner sheet. The facestock layer may include an adhesive layer along at least a portion of a first side and include a label surface along at least a portion of the second side opposite the adhesive layer. The liner sheet layer may include at least one surface feature provided along a back side of the liner sheet. In another embodiment, the facestock layer may include at least one surface feature provided along the front of the facestock layer. The surface features may create a zone of increased friction or increase tactile sensitivity along the various surfaces of the label sheet assembly to improve printer processing.Type: GrantFiled: November 15, 2017Date of Patent: June 29, 2021Assignee: CCL LABEL, INC.Inventors: Martin Utz, Alan Jameson, Eric Cushing, Le-Hoa Hong, Sriram Venkatasanthanam, Adam Bratter, Heba Armand, Ana Trinh, Thomas Amann, Martin Bögl, Andreas Meyer, Rebekka Trabitzsch
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Patent number: 10838316Abstract: An image forming apparatus in which occurrence of an image failure in association with contamination caused by an external additive, such as silica, adhering to a charging unit is suppressed. The image forming apparatus is configured to charge an image bearing member through use of the charging unit, and uses toner having, on a surface thereof, strontium titanate particles and silica particles having predetermined physical properties.Type: GrantFiled: August 23, 2019Date of Patent: November 17, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Akinori Miyamoto, Kota Mori, Masami Hano, Takashi Kase, Tadashi Fukuda, Mikihiro Akasaki, Takeshi Ohtsu
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Patent number: 9298116Abstract: An electrostatic charge image developing toner includes a plurality of toner particles each having a toner core, organic particles adhering to a surface of the toner core, and a shell layer covering the toner core and the organic particles. The shell layers contain a thermosetting resin.Type: GrantFiled: November 21, 2014Date of Patent: March 29, 2016Assignee: KYOCERA Document Solutions Inc.Inventors: Ken Maetani, Tomoyuki Ogawa
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Patent number: 9188895Abstract: Toner additives for improving overall toner charging. In particular, incorporation of fluorinated surfactants into latex for formation of toner core particles provide enhanced charging without any significant adverse impact on the other properties of the toner. Methods of making toners comprising the fluorinated surfactants are also provided.Type: GrantFiled: December 16, 2013Date of Patent: November 17, 2015Assignee: XEROX CORPORATIONInventors: Valerie M. Farrugia, Kimberly D. Nosella, Richard P. N. Veregin, Michael S. Hawkins
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Patent number: 9034550Abstract: 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: GrantFiled: November 2, 2011Date of Patent: May 19, 2015Assignee: Ricoh Company, Ltd.Inventors: Yuka Mizoguchi, Hideki Sugiura, Azumi Miyaake
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Patent number: 9034553Abstract: A method of transferring a foil comprising: forming a foil transferring face on a photoreceptor employing a foil transferring face forming toner; transferring the foil transferring face onto a base substance, followed by fixing the foil transferring face; supplying a transfer foil having at least a foil and an adhesive layer on the base substance having the fixed foil transferring face, heating the transfer foil and the foil transferring face while the adhesive layer of the transfer foil is in contact with the foil transferring face to adhere the foil onto the foil transferring face; removing the transfer foil from the base substance while leaving the foil adhered onto the foil transferring face, wherein the foil transferring face forming toner comprises at least a binder resin, wherein the binder resin comprises a polymer formed by using a vinyl monomer comprising at least a carboxyl group.Type: GrantFiled: March 16, 2011Date of Patent: May 19, 2015Assignee: KONICA MINOLTA BUSINESS TECHNOLOGES, INC.Inventors: Ryuichi Hiramoto, Takao Yamanouchi, Kazue Nakamura, Michiyo Fujita
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Patent number: 8993208Abstract: A foil transferring method employing an electrophotography is disclosed, in which a toner used for forming a foil transferring layer contains at least a vinyl based resin and a polyester based resin as a binder resin and an amount of the vinyl based resin is 50 to 95% by weight based on the total amount of the binder resin.Type: GrantFiled: April 4, 2012Date of Patent: March 31, 2015Assignee: Konica Minolta Business Technologies, Inc.Inventors: Asao Matsushima, Tatsuya Nagase, Yasuko Uchino, Aya Shirai, Ryuichi Hiramoto, Michiyo Fujita
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Patent number: 8986916Abstract: 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: GrantFiled: December 26, 2012Date of Patent: March 24, 2015Assignee: Ricoh Company, Ltd.Inventors: Hiroshi Yamashita, Masana Shiba, Satoyuki Sekiguchi, Yukari Fukuda, Daisuke Asahina, Rintaro Takahashi, Tsuyoshi Sugimoto
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Patent number: 8980513Abstract: 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: GrantFiled: April 26, 2012Date of Patent: March 17, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Hirofumi Shiozaki, Susumu Yoshino, Hirotaka Matsuoka, Yuki Sasaki
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Patent number: 8974998Abstract: A method of forming an image including an electrophotographic photoreceptor and a toner, wherein a photosensitive layer in the electrophotographic photoreceptor includes an undercoat layer including metal oxide particles, a charge generation layer including hydroxygallium phthalocyanine, and a charge transport layer, and the toner contains 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—0.0517EXP(22.4/Dv50)?Dns?0.233EXP(17.3/Dv50) where Dv50 is the volume median diameter (?m) of the toner, and Dns is the percentage in number of toner particles having a particle diameter of from 2.00 ?m to 3.56 ?m.Type: GrantFiled: September 14, 2011Date of Patent: March 10, 2015Assignee: Mitsubishi Chemical CorporationInventors: Teruyuki Mitsumori, Kozo Ishio, Hiroaki Takamura, Masaya Oota, Shiho Sano, Takeshi Oowada, Masakazu Sugihara, Teruki Senokuti, Shiro Yasutomi, Yumi Hirabaru
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Patent number: 8962230Abstract: 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: GrantFiled: May 15, 2013Date of Patent: February 24, 2015Assignee: Fuji Xerox Co., Ltd.Inventor: Shigeru Seitoku
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Patent number: 8951706Abstract: 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: GrantFiled: September 25, 2012Date of Patent: February 10, 2015Assignee: Fuji Xerox Co., Ltd.Inventors: Hirotaka Matsuoka, Sumiaki Yamasaki, Satoshi Hiraoka, Yuki Sasaki, Susumu Yoshino
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Publication number: 20150024319Abstract: A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having a copolymer (including acrylonitrile units, butadiene units, and aromatic units), a charge control agent, and a heat absorber. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.Type: ApplicationFiled: July 17, 2013Publication date: January 22, 2015Inventor: Trevor I. Martin
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Publication number: 20150024317Abstract: A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having a high-performance thermoplastic material and a charge control agent. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.Type: ApplicationFiled: July 16, 2014Publication date: January 22, 2015Inventors: James E. Orrock, Steven A. Chillscyzn, Trevor I. Martin
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Publication number: 20150024316Abstract: A part material for printing three-dimensional parts with an electrophotography-based additive manufacturing system, the part material including a composition having an engineering-grade thermoplastic material and a charge control agent. The part material is provided in a powder form having a controlled particle size, and is configured for use in the electrophotography-based additive manufacturing system having a layer transfusion assembly for printing the three-dimensional parts in a layer-by-layer manner.Type: ApplicationFiled: July 16, 2014Publication date: January 22, 2015Inventors: James E. Orrock, Steven A. Chillscyzn, Trevor I. Martin
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Patent number: 8936895Abstract: To provide a toner, which contains: base particles each having a core-shell structure, where a core of the base particle contains crystalline polyester, non-crystalline polyester, a colorant, and a releasing agent, and a shell of the base particle contain a resin, wherein the toner has thermal hardness of 0.5 to 1.8, wherein the toner has a softening index of 80° C. to 95° C., and wherein the toner has thermal retentiveness of 30° C. to 50° C.Type: GrantFiled: October 7, 2011Date of Patent: January 20, 2015Assignee: Ricoh Company, Ltd.Inventor: Hideki Sugiura
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Patent number: 8936897Abstract: A composite color toner image can be enhanced by applying a separate fluorescing toner image over it to provide an enhanced color toner image having a “pinkish” fluorescing effect. This separate fluorescing toner image is obtained using visible fluorescing dry magenta toner particles. Each of these toner particles consists essentially of a polymeric binder phase and a visible fluorescing colorant that emits at one or more peak wavelengths of at least 510 nm and up to and including 590 nm and that is dispersed within the polymeric binder phase.Type: GrantFiled: May 2, 2012Date of Patent: January 20, 2015Assignee: Eastman Kodak CompanyInventors: Dinesh Tyagi, Louise Granica, Chung-Hui Kuo
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Patent number: 8932788Abstract: The present invention provides a toner containing at least a binder resin and a pigment, wherein the amount of the pigment in the toner is 3.0% by mass to 8.5% by mass, the volume average particle diameter of the toner is 2.0 ?m to 6.0 ?m, and a monochrome image, which has been fixed on a recording medium so that the amount of the toner adhered onto the recording medium is 0.25 mg/cm2, has a reflection density of 1.2 to 2.5.Type: GrantFiled: October 6, 2008Date of Patent: January 13, 2015Assignee: Ricoh Company, Ltd.Inventors: Shinichi Wakamatsu, Hiroshi Yamashita, Naohiro Watanabe, Tsuyoshi Sugimoto
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Patent number: 8883389Abstract: An object of the present invention is to provide a developing apparatus which is less affected by usage environments, has high development efficiency for long term use and can provide a high quality image without image density non-uniformity. The present invention relates to a developing apparatus wherein a magnetic toner-carrying member has a work function value at the surface thereof within a specific range, a toner regulating member which regulates toner carried on the magnetic toner-carrying member is made of a specific material at a portion contacting the magnetic toner, the magnetic toner has an average circularity of 0.950 or more and the magnetic toner has a surface tension index within a specific range.Type: GrantFiled: December 21, 2012Date of Patent: November 11, 2014Assignee: Canon Kabushiki KaishaInventors: Takashi Matsui, Michihisa Magome, Shotaro Nomura, Atsuhiko Ohmori
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Publication number: 20140272696Abstract: Toner contains a mother toner particle that contains a crystalline resin; and wax; and a coloring agent, wherein the area of endothermic peak derived from the crystalline resin during a first temperature rising as measured by differential scanning calorimetry is at least 20 J/g, wherein the ratio of the area of endothermic peak derived from the wax during a second time temperature rising as measured by differential scanning calorimetry (DSC) to the area of endothermic peak derived from the wax during a first time temperature rising as measured by differential scanning calorimetry is at least 0.50, wherein the ratio of the area of endothermic peak derived from the wax during a first time temperature rising as measured by differential scanning calorimetry to the area of endothermic peak derived from the crystalline resin during a first temperature rising as measured by differential scanning calorimetry is at least 0.10.Type: ApplicationFiled: February 4, 2014Publication date: September 18, 2014Inventors: Hiroshi YAMASHITA, Toyoshi Sawada, Hideyuki Santo
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Publication number: 20140272690Abstract: To provide a toner, containing: a noncrystalline resin; and a crystalline resin, wherein the crystalline resin has a weight average molecular weight of 100,000 to 180,000, wherein a temperature range of the toner, within which a loss tangent (tan ?) as measured by a dynamic viscoelasticity measurement is 6 or greater, is 20° C. or greater, and wherein a fixed toner image has 60° glossiness of 30 to 50, where the fixed toner image is obtained by forming an unfixed toner image having a deposition amount of 0.4 mg/cm2 on a recording medium having 60° glossiness of 30 for a measurement, and fixing at temperature at which temperature of the toner image is a lowest temperature of the temperature range +10° C., at 0.15 MPa, for a nipping duration of 50 msec.Type: ApplicationFiled: March 7, 2014Publication date: September 18, 2014Inventors: Kazumi SUZUKI, Yoshitaka YAMAUCHI
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Patent number: 8835090Abstract: An object of the present invention is to provide a developing apparatus which is less affected by usage environments, has high development efficiency for long term use and can provide a high quality image without image density non-uniformity. The present invention relates to a developing apparatus wherein a magnetic toner-carrying member has a work function value at the surface thereof within a specific range, a toner regulating member which regulates toner carried on the magnetic toner-carrying member is made of a specific material at a portion contacting the magnetic toner, the magnetic toner has an average circularity of 0.950 or more and the magnetic toner has a surface tension index within a specific range.Type: GrantFiled: December 21, 2012Date of Patent: September 16, 2014Assignee: Canon Kabushiki KaishaInventors: Takashi Matsui, Michihisa Magome, Shotaro Nomura, Atsuhiko Ohmori
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Publication number: 20140248557Abstract: A carrier is provided. The carrier includes a particulate magnetic core, and a cover layer located on the surface of the particulate magnetic core and including a resin and a filler. When determined from observation of cross-section of the carrier, the shape factor SF2 of the carrier is from 120 to 160, the ratio of the average domain diameter of the particulate magnetic core to the number average particle diameter of the filler is from 1:1 to 1:0.003, and the area ratio of the filler in the cover layer is from 30 to 85%.Type: ApplicationFiled: January 29, 2014Publication date: September 4, 2014Inventors: Shigenori Yaguchi, Koichi Sakata, Hitoshi Iwatsuki, Toyoaki Tano, Hiroyuki Kishida, Kenichi Mashiko, Hiroshi Tohmatsu
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Patent number: 8808956Abstract: 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: GrantFiled: September 25, 2012Date of Patent: August 19, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Shiori Chonan, Sumiaki Yamasaki, Satoshi Hiraoka, Yuki Sasaki, Susumu Yoshino, Hirotaka Matsuoka
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Patent number: 8741521Abstract: A toner containing toner particles, each toner particle containing: a releasing agent; a colorant; and a binder resin containing at least a crystalline polyester resin and a non-crystalline polyester resin, wherein in the case where a volume average particle diameter of the toner is defined as Dv, the toner contains a group of the toner particles having 4/5 Dv, and a group of the toner particles having 6/5 Dv, and wherein an endothermic value A of the crystalline polyester resin at a first temperature increase in DSC of the toner, an endothermic value B of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particle having 4/5 Dv, and an endothermic value C of the crystalline polyester resin at a first temperature increase in DSC of the group of the toner particles having 6/5 Dv satisfy the relation represented by the following formulas: 50<(B/A)×100<90, and 110<(C/A)×100<150.Type: GrantFiled: September 14, 2011Date of Patent: June 3, 2014Assignee: Ricoh Company, Ltd.Inventors: Mamoru Hozumi, Tsuyoshi Sugimoto, Naohiro Watanabe, Tomoyuki Satoh, Shinya Hanatani, Osamu Uchinokura, Kiwako Hirohara
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Publication number: 20140147784Abstract: An image forming apparatus, including: an electrostatic latent image bearing member; an electrostatic latent image forming unit configured to form an electrostatic latent image on the electrostatic latent image bearing member; and a developing unit containing a toner and configured to develop the electrostatic latent image with the toner to thereby form a visible image, wherein the developing unit is a contact type one-component developing unit which includes a toner bearing member being in contact with the electrostatic latent image bearing member, wherein a contact pressure between the electrostatic latent image bearing member and the toner bearing member is 2.0×104 N/m2 to 7.5×104 N/m2, wherein the toner contains a binder resin and a releasing agent, and wherein an extracted amount of the releasing agent extracted with hexane from the toner is 10 mg/g to 25 mg/g.Type: ApplicationFiled: November 25, 2013Publication date: May 29, 2014Inventors: Takuya Kadota, Yoshihiro Mikuriya, Tsuyoshi Nozaki, Yoshimichi Ishikawa, Kazuoki Fuwa, Tomohiro Fukao, Yuta Takeuchi, Tomoharu Miki, Takayuki Nakamura, Naoki Nakatake, Yasuhide Matsuno
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Patent number: 8722291Abstract: Provided is an electrostatic charge image developer including a first toner that contains a binder resin and a brilliant pigment, a second toner that contains a binder resin without a brilliant pigment, and a carrier, wherein the developer satisfies the following formulae, 5 ?m?A?30 ?m??(1): 1 ?m?B?15 ?m??(2): 3.0?C/A?5.0??(3): 5.0?C/B?20.0??(4): wherein A represents a volume average particle size of the first toner, B represents a volume average particle size of the second toner, and C represents a volume average particle size of the carrier.Type: GrantFiled: June 25, 2012Date of Patent: May 13, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Atsushi Sugitate, Masaru Takahashi, Shotaro Takahashi
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Patent number: 8722301Abstract: 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: 18?Dt?30;??Formula (1): 1.05?upper GSDv?1.20;??Formula (2): 1.29?lower GSDp?1.50??Formula (3).Type: GrantFiled: April 12, 2012Date of Patent: May 13, 2014Assignee: Fuji Xerox Co., LtdInventors: Tsuyoshi Murakami, Satoshi Yoshida
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Patent number: 8709692Abstract: 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: GrantFiled: September 5, 2012Date of Patent: April 29, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Emi Miyata, Sumiaki Yamasaki, Yuki Sasaki, Satoshi Hiraoka, Hirofumi Shiozaki
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Patent number: 8709694Abstract: 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: GrantFiled: July 31, 2012Date of Patent: April 29, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Hirotaka Matsuoka, Sumiaki Yamasaki, Yuki Sasaki, Satoshi Hiraoka, Hirofumi Shiozaki, Emi Miyata
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Patent number: 8709693Abstract: 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: GrantFiled: September 11, 2012Date of Patent: April 29, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Sumiaki Yamasaki, Yuki Sasaki
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Publication number: 20140106273Abstract: There is provided a positively chargeable toner including toner mother particles containing a binder resin having an ethylenically unsaturated bond, wherein the amine value of a component extracted with a water phase by the addition of ion exchanged water after mixing the toner with methyl ethyl ketone is from 600 to 1,250 and the weight average molecular weight of the component extracted with the water phase is from 1,000 to 200,000.Type: ApplicationFiled: April 25, 2013Publication date: April 17, 2014Applicant: Fuji Xerox Co., Ltd.Inventors: Atsushi SUGAWARA, Masanobu NINOMIYA, Noriyuki MIZUTANI, Akira MATSUMOTO, Yusuke IKEDA, Satoshi KAMIWAKI, Yukiaki NAKAMURA
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Patent number: 8685602Abstract: There is provided a toner for electrophotography containing at least a binder resin, a colorant and a barium compound, and having a relaxation modulus G(t) of from about 2.0×102 Pa to about 3.0×103 Pa in a relaxation time of t=10×Dt (wherein Dt is the heating time taken during fixing) as determined by the measurement of dynamic viscoelasticity, and a barium content of from about 0.1% to about 0.5% with respect to the total amount of constituent atoms in the toner as determined by X-ray fluorescence.Type: GrantFiled: August 16, 2011Date of Patent: April 1, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Yuka Ishihara, Emi Takahashi, Masahiro Okita
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Patent number: 8663889Abstract: A polyester resin for a toner containing: a repeating unit derived from a dicarboxylic acid component; and a repeating unit derived from a dial 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, each of A1 and A2 independently represents a rosin ester group, and the acid value is from 3 mgKOH/g to 30 mgKOH/g.Type: GrantFiled: September 25, 2012Date of Patent: March 4, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Sumiaki Yamasaki, Satoshi Hiraoka, Yuki Sasaki, Susumu Yoshino, Hirotaka Matsuoka
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Publication number: 20140051022Abstract: An electrostatic charge image developing carrier includes a core particle that has a BET specific surface area of from 0.15 m2/g to 0.30 m2/g; and a coating layer that contains a polycyclohexyl methacrylate resin and has a void ratio of from 2% to 10% and with which the core particle is coated, in which a content of a volatile organic compound is less than or equal to 500 ppm.Type: ApplicationFiled: May 1, 2013Publication date: February 20, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Takeshi SHOJI, Norihito FUKUSHIMA, Toshiaki HASEGAWA
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Patent number: 8652731Abstract: 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: GrantFiled: September 25, 2012Date of Patent: February 18, 2014Assignee: Fuji Xerox Co., LtdInventors: Yuki Sasaki, Sumiaki Yamasaki, Satoshi Hiraoka, Susumu Yoshino, Hirotaka Matsuoka
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Patent number: 8652722Abstract: An electrostatic charge image developing toner contains a binder resin, a release agent, a black colorant, a methylglycine diacetate, and an aluminum element, the content of the methylglycine diacetate is in the range of from 5 ppm to 500 ppm, and the content of the aluminum element is in the range of from 0.07 atomic % to 0.18 atomic % in total element analysis using fluorescent X-rays.Type: GrantFiled: February 15, 2012Date of Patent: February 18, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Yoshida, Tsuyoshi Murakami, Eisuke Iwazaki, Shinya Sakamoto
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Patent number: 8628902Abstract: A polyester resin for a toner containing: 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.Type: GrantFiled: November 15, 2011Date of Patent: January 14, 2014Assignee: Fuji Xerox Co., Ltd.Inventors: Sumiaki Yamasaki, Satoshi Hiraoka, Yuki Sasaki, Susumu Yoshino, Hirotaka Matsuoka
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Publication number: 20130344432Abstract: 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: ApplicationFiled: June 14, 2013Publication date: December 26, 2013Inventors: Yoshiyasu MATSUMOTO, Aya SHIRAI, Ryuichi HIRAMOTO, Taiki AMEMIYA
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Patent number: 8609315Abstract: A transparent toner includes toner particles having a volume average particle diameter in the range of 18 ?m to 28 ?m, and satisfying formulae (1) and (2): 0.1?Ntb/Nta×100?2.5??(1) 0?Ntc/Nta×100?1.0??(2) Nta is the number of particles under the measurement conditions satisfying 0.5 ?m?circle-equivalent diameter?200 ?m, and 0.40?circularity?1.00; Ntb is the number of particles under the measurement conditions satisfying 0.5×Dta (?m)?circle-equivalent diameter?2.5×Dta (?m), and 0.60?circularity?0.90; and Ntc is the number of particles under the measurement conditions satisfying 2.5×Dta (?m)?circle-equivalent diameter?200 ?m, and 0.40?circularity?1.00; Dta is the average circle-equivalent diameter under the measurement conditions satisfying 0.5?m?circle-equivalent diameter?200 ?m, and 0.40?circularity?1.00.Type: GrantFiled: July 24, 2012Date of Patent: December 17, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Satoshi Yoshida, Tsuyoshi Murakami
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Publication number: 20130295500Abstract: 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: ApplicationFiled: March 15, 2013Publication date: November 7, 2013Inventors: Dinesh Tyagi, Louise Granica
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Patent number: 8574802Abstract: Environmentally friendly toner particles are provided which may include a bio-based amorphous polyester resin, optionally in combination with another amorphous resin and/or a crystalline resin. Methods for providing these toners are also provided. In embodiments, the bio-based amorphous polyester resin includes a biologically derived diol, such as 2,3-butanediol.Type: GrantFiled: February 24, 2011Date of Patent: November 5, 2013Assignee: Xerox CorporationInventors: Valerie M. Farrugia, Guerino G. Sacripante, Rosa M. Duque
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Patent number: 8568953Abstract: To provide an apparatus for producing a toner, including: a droplet forming unit configured to periodically discharge a toner composition liquid, which includes at least a resin and a colorant, from a plurality of nozzles so as to form droplets; a gas flow forming unit configured to form a gas flow which passes through a narrowed portion that corresponds to a nozzle formation area and that is placed on a downstream side of the nozzles with respect to a droplet discharge direction, and which advances in the droplet discharge direction; and a particle forming unit configured to form toner particles by solidifying the droplets of the toner composition liquid passed through the narrowed portion and then discharged, wherein the opening area of an opening which forms the narrowed portion decreases from an inlet side of the narrowed portion toward an outlet side of the narrowed portion.Type: GrantFiled: August 19, 2010Date of Patent: October 29, 2013Assignee: Ricoh Company, Ltd.Inventors: Kenta Kenjoh, Tetsuya Tanaka
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Patent number: 8568950Abstract: 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: GrantFiled: September 25, 2012Date of Patent: October 29, 2013Assignee: Fuji Xerox Co., Ltd.Inventors: Hirofumi Shiozaki, Sumiaki Yamasaki, Satoshi Hiraoka, Yuki Sasaki, Susumu Yoshino, Hirotaka Matsuoka, Emi Miyata
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Publication number: 20130252155Abstract: Provided is an electrostatic charge image developer including a first toner that contains a binder resin and a brilliant pigment, a second toner that contains a binder resin without a brilliant pigment, and a carrier, wherein the developer satisfies the following formulae, 5 ?m?A?30 ?m??(1): 1 ?m?B?15 ?m??(2): 3.0?C/A?5.0??(3): 5.0?C/B?20.0??(4): wherein A represents a volume average particle size of the first toner, B represents a volume average particle size of the second toner, and C represents a volume average particle size of the carrier.Type: ApplicationFiled: June 25, 2012Publication date: September 26, 2013Applicant: FUJI XEROX CO., LTD.Inventors: Atsushi SUGITATE, Masaru TAKAHASHI, Shotaro TAKAHASHI
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Patent number: 8507170Abstract: An image-forming method includes forming an electrostatic image on an electrostatic image bearing member which has been charged; developing the electrostatic image to form a toner image; transferring the toner image on the electrostatic image bearing member with or without mediating an intermediate transferring member onto a transfer material; and fixing the toner image on the transfer material. The electrostatic image bearing member is a photosensitive member obtained by sequentially laminating a photoconductive layer and a surface layer formed of hydrogenated amorphous silicon carbide, and a sum of an atomic density of silicon atoms and an atomic density of carbon atoms in the surface layer of the photosensitive member is 6.60×1022 atoms/cm3 or more. The toner has a binder resin and magnetic iron oxide particles, and the magnetic iron oxide particles contain Fe(2+) at a content of 20.0 mass % or more and 25.0 mass % or less.Type: GrantFiled: July 24, 2009Date of Patent: August 13, 2013Assignee: Canon Kabushiki KaishaInventors: Tooru Takahashi, Katsuhisa Yamazaki, Syuhei Moribe, Daisuke Yoshiba, Masami Fujimoto
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Patent number: 8486596Abstract: A toner produced by a method including dissolving or dispersing toner components comprising a colorant and at least one of a binder resin and a precursor thereof in an organic solvent to prepare a toner components liquid, dispersing the toner components liquid in an aqueous medium including a surfactant, a particulate resin A having the same polarity as the surfactant and a volume average particle diameter of from 5 to 50 nm, and a particulate resin B having a volume average particle diameter of from 10 to 500 nm to form liquid droplets, and removing the organic solvent from the liquid droplets. The particulate resin B is incompatible with the binder resin and swells in the organic solvent.Type: GrantFiled: June 26, 2009Date of Patent: July 16, 2013Assignee: Ricoh Company, LimitedInventors: Masaki Watanabe, Hiroshi Yamashita, Tsuyoshi Sugimoto, Naohiro Watanabe, Shinichi Wakamatsu
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Publication number: 20130164669Abstract: A toner including a binder resin containing an ester bond, and a releasing agent, wherein the releasing agent includes first C30-C50 alkyl monoester compound and second C30-C50 alkyl monoester compound, wherein the number of carbon atoms of the first C30-C50 alkyl monoester compound is different from that of the second C30-C50 alkyl monoester compound, wherein the amount of the first C30-C50 alkyl monoester compound is largest and the amount of the second C30-C50 alkyl monoester compound is second largest or same as the amount of the first C3OC50 alkyl monoester compound, wherein the amount of the first C30-C50 alkyl monoester compound is 30% by mass or more but less than 50% by mass to the releasing agent, and wherein the amount of the second C30-C50 alkyl monoester compound is 10% by mass or more but less than 50% by mass to the releasing agent.Type: ApplicationFiled: August 18, 2011Publication date: June 27, 2013Inventors: Hiroshi Yamashita, Yuichi Shirasu, Tomoki Murayama, Masaki Watanabe
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Publication number: 20130157186Abstract: A magnetic carrier having excellent charge-imparting ability includes a magnetic particle and a coating layer disposed on a surface of the magnetic particle. The coating layer includes at least a resin component including an acrylic polymer and hydrotalcite dispersed in a form of particles having a predetermined number-average particle. A content of the hydrotalcite CH (parts by weight) is in a range of approximately 3 or more to approximately 30 parts by weight or less based on 100 parts by weight of the resin component. A content of the acrylic monomer unit CA (mol %) with respect to a total monomer unit included in the resin component and the content of the hydrotalcite CH satisfy the following relationship: 78?CH×0.38+CA?99.Type: ApplicationFiled: December 18, 2012Publication date: June 20, 2013Applicant: Samsung Electronics Co., Ltd.Inventor: Samsung Electronics Co., Ltd.
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Patent number: 8431310Abstract: A color particle is disclosed, comprising a color-exhibitive piece which comprises microparticles for structural color and a matrix and is dispersed in a binder resin, wherein the color particle meets the following requirement: 1.5?A/B?5.0 wherein A is a major axis diameter of the color particle and B is a minor axis diameter of the color particle; and an angle of a longitudinal direction of the color-exhibitive piece to a major axis direction of the color particle falls within a range of ±20 degrees.Type: GrantFiled: April 12, 2010Date of Patent: April 30, 2013Assignee: Konica Minolta Business Technologies, Inc.Inventors: Aya Shirai, Tatsuya Nagase, Motoi Nishimura