Toner Image Transfer Patents (Class 430/125.3)
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Publication number: 20120064443Abstract: An N-phenyl-diphenylisoindole derivative having the following formula (I): wherein each of R1 and R2 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, or a substituted or an unsubstituted phenoxy group; R3 represents a hydrogen atom, a substituted or an unsubstituted alkyl group, a substituted or an unsubstituted alkoxy group, a substituted or an unsubstituted phenyl group, a substituted or an unsubstituted phenoxy group, or has the following formula (2): wherein each of R4 and R5 represents a substituted or an unsubstituted alkyl group, or a substituted or an unsubstituted phenyl group; 1 represents an integer of from 1 to 4; and each of m and n represents an integer of from 1 to 5.Type: ApplicationFiled: September 13, 2011Publication date: March 15, 2012Inventors: Ryota ARAI, Tomoyuki Shimada
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Publication number: 20120052436Abstract: Various embodiments provide systems and methods for direct digital marking, wherein an electrostatic latent image or a surface charge contrast can be formed and developed at a development nip formed by a nano-enabled imaging member and a negatively-biased development subsystem.Type: ApplicationFiled: August 26, 2010Publication date: March 1, 2012Applicant: XEROX CORPORATIONInventors: Kock-Yee LAW, Yuanjia ZHANG, Mandakini KANUNGO
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Publication number: 20120040281Abstract: A transfer printing method including applying a curable sublimation toner having at least one curable component and at least one sublimation colorant in a desired pattern onto a transfer substrate to form an image on the transfer substrate at a first temperature which is below the sublimation temperature of the sublimation colorant; wherein the curable sublimation toner is a conventional toner or a chemical toner; and wherein the curable sublimation toner includes at least one curable amorphous resin and optionally, a crystalline resin; curing the image on the transfer substrate; and optionally, bringing the transfer substrate into contact with a final image-receiving substrate, optionally applying pressure, and heating to a second temperature which is sufficient to cause the sublimation colorant to sublime and form a permanent image on the final image-receiving substrate.Type: ApplicationFiled: August 16, 2010Publication date: February 16, 2012Applicant: XEROX CORPORATIONInventors: Yulin Wang, Ke Zhou, Tie Hwee Ng, Marko Saban
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Publication number: 20120028179Abstract: An electrophotographic photoreceptor, including an electroconductive substrate; a charge generation layer; a hole transport layer; and a hole transportable protection layer being a three-dimensional crosslinked film formed by irradiating at least a radical polymerizable hole transportable compound with UV to be chain-polymerized, layered in this order, wherein the hole transportable protection layer comprises a silole compound having the following formula (1): wherein each of R1 and R2 represents a monovalent alkyl group having 1 to 4 carbon atoms or a monovalent phenyl group; Each of Ar1 to Ar4 represents a phenyl group, a naphtyl group and a biphenylyl group or a phenyl group, a naphtyl group and a biphenylyl group substituted with a monovalent alkyl group having 1 to 4 carbon atoms and a trifluoromethyl group; and R1, R2 and Ar1 to Ar4 adjacent to each other optionally connect with each other to form rings.Type: ApplicationFiled: June 9, 2011Publication date: February 2, 2012Inventors: Hongguo LI, Kazukiyo NAGAI, Tetsuro SUZUKI
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Patent number: 8088545Abstract: Disclosed is a production apparatus of a wired member, including: a mask forming unit that forms a mask on a transfer substrate by using a toner in accordance with an electrophotographic method so as to be transferable to a member to be wired, the mask corresponding to a wiring pattern to be formed on the member to be wired; a mask transferring unit that transfers the mask formed on the transfer substrate by the toner to the member to be wired; a conductive film forming unit that supplies a conductive material onto the mask-transferred side of the member to be wired to form a film of the conductive material thereon; and a mask removing unit that removes the mask from the member to be wired on which the film of the conductive material has been formed.Type: GrantFiled: June 17, 2008Date of Patent: January 3, 2012Assignee: Fuji Xerox Co., Ltd.Inventors: Kei Shimotani, Takayuki Takeuchi, Tetsuro Kodera, Taishi Shigematsu, Masaki Hirakata
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Publication number: 20110300476Abstract: A positive charging single-layer electrophotographic photoconductor configured to serve as an image-bearing member for use in an image-forming apparatus includes a photosensitive layer on a conductive base, including a charge-generating material, a hole-transport material, an electron-transport material, and a binder resin, in which the photosensitive layer has a polysiloxane oil, with the amount of the polysiloxane oil being in the range of about 0.005% by mass to about 0.021% by mass with respect to the total mass of materials.Type: ApplicationFiled: June 2, 2011Publication date: December 8, 2011Applicant: KYOCERA MITA CORPORATIONInventors: Kuboshima Daisuke, Shishido Makoto, Yamamoto Yohei, Shimizu Tomofumi, Miyamoto Eiichi
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Publication number: 20110229820Abstract: A toner pattern for detecting the degree of toner deterioration is created on a photosensitive element and transferred to an intermediate transfer belt by a primary transfer unit under a transfer condition different from that at the time of image formation. A toner adhesion amount detection unit detects the toner adhesion amount of the toner pattern at multiple places. A degree-of-toner-deterioration calculation unit calculates the degree of toner deterioration on the basis of the variation in data of the toner adhesion amount at multiple places detected by the toner adhesion amount detection unit. A background potential determination coefficient in a process control unit is controlled on the basis of the degree of toner deterioration calculated by the degree-of-toner-deterioration calculation unit.Type: ApplicationFiled: March 10, 2011Publication date: September 22, 2011Inventor: Takuma HIGA
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Patent number: 7945189Abstract: An image forming apparatus and an image forming method are provided that realize both the use of a decolorizing toner and a non-decolorizing toner and miniaturization of the apparatus.Type: GrantFiled: April 10, 2008Date of Patent: May 17, 2011Assignees: Kabushiki Kaisha Toshiba, Toshiba Tec Kabushiki KaishaInventor: Toshimi Yamashita
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Publication number: 20110104607Abstract: A chemical toner composition that includes at least one curable amorphous resin and at least one sublimation colorant.Type: ApplicationFiled: November 3, 2009Publication date: May 5, 2011Applicant: Xerox CorporationInventors: Yulin WANG, Ke ZHOU, Edward G. ZWARTZ, T. Hwee NG
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Publication number: 20110086305Abstract: A toner including a mother toner comprising a binder resin and a calixarene having a halogen group, and a charge controlling agent having a halogen group that is present on a surface of the mother toner. The ratio of halogen ion to carbon ion on a surface of the toner is from 0.01 to 0.5, when determined by TOF-SIMS. The toner can be prepared by preparing a first liquid by dissolving or dispersing toner components including a calixarene having a halogen group and a binder resin and/or a precursor of the binder resin in an organic solvent; preparing a second liquid by emulsifying or dispersing the first liquid in an aqueous medium; removing the organic solvent from the second liquid; preparing a third liquid by washing the second liquid from which the organic solvent is removed; and adding a charge controlling agent having a halogen group to the third liquid.Type: ApplicationFiled: October 6, 2010Publication date: April 14, 2011Inventors: Masaki Watanabe, Hiroshi Yamashita, Tomoh Kubo
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Publication number: 20110076611Abstract: The electrographic printing of one or more multi-channeled layers having a particular pattern by electrographic techniques that produces a three-dimensional optical waveguide electrographically. Such electrographic printing comprises the steps of forming a desired print image, electrographically, on a receiver member utilizing predetermined sized marking particles; and, where desired, forming one or more final multi-channeled layers utilizing marking particles of a predetermined size or size distribution.Type: ApplicationFiled: September 30, 2009Publication date: March 31, 2011Inventors: Lee W. Tutt, Donna P. Suchy
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Patent number: 7910278Abstract: The present invention provides a toner for developing electrostatic image comprising a colored particle containing a binder resin, a colorant and a release agent, wherein the toner for developing electrostatic image has two or more peaks of loss tangent (tan ?) in the range from 50 to 120° C., a loss tangent (tan ?) in the range from 100 to 200° C. is 0.8 or less, and a dispersed diameter of the release agent is 0.1 times or less shorter than a volume average particle diameter of the colored particle.Type: GrantFiled: December 28, 2005Date of Patent: March 22, 2011Assignee: Zeon CorporationInventors: Gen-ichi Ohta, Hiroto Kidokoro
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Publication number: 20110033791Abstract: Disclosed is an electrophotographic photosensitive body which does not cause image defects such as black spots and image unevenness when image exposure is performed using light having a wavelength of 350-500 nm, which is so-called short-wavelength light. The electrophotographic photosensitive body is characterized by having at least an intermediate layer, a charge-generating layer containing a metal phthalocyanine pigment and a charge-transporting layer on a conductive supporting body which has a skewness of the profile (Rsk) within the range of ?8<Rsk<0.Type: ApplicationFiled: September 2, 2009Publication date: February 10, 2011Inventor: Shigeaki Tokutake
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Publication number: 20110033797Abstract: An image formation apparatus including: a two-component developer that contains toner and carrier; a photoconductor that forms a toner image by the two-component developer; and an intermediate transfer body to which the toner image on the photoconductor is transferred. The intermediate transfer body has a surface layer that is provided on a transfer surface of the intermediate transfer body onto which the toner image is transferred and that contains a first fluoropolymer. The carrier has a carrier core particle and a coat layer that is provided on a surface of the carrier core particle and that contains a second fluoropolymer. The toner is positively charged.Type: ApplicationFiled: August 10, 2009Publication date: February 10, 2011Applicant: Kyocera Mita CorporationInventor: Akinori Koyama
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Publication number: 20110027713Abstract: The disclosure provides an electrophotographic toner including a binder resin; and a light absorber, wherein the light absorber includes a metal nanorod and a surfactant covering a surface of the metal nanorod.Type: ApplicationFiled: July 19, 2010Publication date: February 3, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Moon-il JUNG, Seung-Jin Oh, Eun-ha Lee
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Publication number: 20110027715Abstract: A developer for forming an image on a transfer medium includes a toner having a volume average particle size of 3 to 8 ?m, and a mixed carrier including a first carrier having a volume average particle size of 25 to 40 ?m and conductivity that corresponds to a current value of 1.5 to 2.0 ?A at application of 1000 V for 30 sec, and a second carrier having a volume average particle size of 35 to 60 ?m larger than the first carrier and conductivity that corresponds to a current value of 2.0 to 4.0 ?A larger than the first carrier at application of 1000 V for 30 sec.Type: ApplicationFiled: July 29, 2010Publication date: February 3, 2011Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Mitsutoshi Watanabe
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Publication number: 20110020746Abstract: An electrostatic image developer is provided, the electrostatic image developer including: a carrier for an electrostatic image developer, the carrier including a core particle which has a plurality of projections on a surface of the core particle; and electrostatic image developing toners, wherein the electrostatic image developer satisfies following relationships of formulae (1) and (2): 0.5t<H??(1) 21/2t<L<5t??(2) wherein t represents a volume average particle diameter (?m) of the toners; H represents an average height difference (?m) in the recesses and projections of the core particle; and L represents an average distance (?m) between the projections.Type: ApplicationFiled: March 26, 2010Publication date: January 27, 2011Applicant: FUJI XEROX CO., LTD.Inventors: Susumu YOSHINO, Hideo Maehata, Satoshi Hiraoka
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Publication number: 20110014562Abstract: A substrate transfer system to reduce total processing time by transferring a substrate at a first delivery stage to a process block where processing can be carried out earliest. The substrate processing apparatus includes a first transfer device delivering a wafer with respect to a substrate carrier, and a second transfer device delivering a wafer between a plurality of process blocks and the first transfer device via a first delivery stage, to transfer the wafer with respect to the process blocks. The process block where there is no wafer or where processing of the last wafer within the relevant process block will be completed earliest is determined based on processing information of the wafers from the process blocks, and the wafer of the first delivery stage is transferred by the second transfer device to the relevant process block. This ensures smooth transfer of the wafer to the process block.Type: ApplicationFiled: September 21, 2010Publication date: January 20, 2011Applicant: TOKYO ELECTRON LIMITEDInventors: Nobuaki MATSUOKA, Yoshio KIMURA, Akira MIYATA
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Publication number: 20110008724Abstract: A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y??1.54x+5.93 ??(1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.Type: ApplicationFiled: July 13, 2010Publication date: January 13, 2011Inventors: Nobuyuki YOSHIOKA, Takanori Kamoto, Osamu Wada, Tadashi Iwamatsu
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Publication number: 20100330480Abstract: An electrophotographic photoreceptor comprising an electrically conductive support having thereon a photo sensitive layer having a laminated structure comprising a charge generation layer and a charge transport layer, wherein the charge generation layer comprises a titanyl phthalocyanine pigment having a crystal structure exhibiting the following peaks of Bragg angles 2? (±0.2°) of X-ray powder diffraction employing a characteristic X-ray of a CuK? radiation (having a wavelength of 1.542 ?): at least a largest diffraction peak at 27.2°, major diffraction peaks at 9.4°, 9.6° and 24.0°, and a diffraction peak of a lowest angle at 7.3° while exhibiting no peak between the peaks of 7.3° and 9.4° and no peak at 26.Type: ApplicationFiled: June 17, 2010Publication date: December 30, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventor: Akihiko ITAMI
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Patent number: 7813661Abstract: An electrophotographic printing control apparatus serves for transferring an image via an electrically biasable ITM drum to a conductive substrate. The electrically biasable ITM drum is in contact with the conductive substrate over a contact period during which the image is transferred to the conductive substrate. The printing control apparatus includes a bias unit which provides electrical bias to the ITM drum and with short circuit protection, and a bias switching unit controllable to cut bias from the bias unit to the ITM drum during the contact period such that the ITM drum is unbiased when in contact with the conductive substrate.Type: GrantFiled: October 27, 2005Date of Patent: October 12, 2010Assignee: Hewett-Packard Development Company, L.P.Inventors: Naseem Yacoub, Ran Soffer
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Patent number: 7811738Abstract: In an image forming method including a charging step, an exposure step, a development step using a developing roll, a transfer step, a fixing step and a cleaning step of removing a toner remaining on the surface of a photosensitive member after the transfer step, the developing roll has a surface brightness of 30 to 220 and a surface roughness Rz of 1 to 20 ?m, the cleaning blade is a cleaning blade made of a polyurethane elastomer and having a peak value of at most 0.95, a peak temperature of ?15 to 10° C. and a width at half maximum of at least 25° C. in viscoelasticity tan ?, the toner has a volume average particle diameter of 4 to 10 ?m and an average circularity from 0.950 to 0.995, the charge level of the toner on the surface of the photosensitive member is 10 to 80 ?C/g in terms of an absolute value, and the pH of a water extract of the toner is 3 to 8.Type: GrantFiled: May 31, 2005Date of Patent: October 12, 2010Assignees: Zeon Corporation, Toyo Tire & Rubber Co., Ltd., Yamanashi Electronics Co., Ltd., Shin-Etsu Polymer Co., Ltd.Inventors: Kazunori Shigemori, Muneharu Ito, Toshiyuki Nagai, Toshiro Murano, Fuminori Tsuruta, Tomoharu Takeuchi, Masahiro Ikeda, Sokuei Motoda
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Publication number: 20100255413Abstract: An imaging member is disclosed having a surface layer comprising a heat-sensitive material whose surface compatibility to printing agents, such as toners and inks, can be substantially reversed in response to small changes in temperature. The imaging member is suitable for use in lithographic and printing applications, permitting reversible switching between compatibility states of printing agents, such as between hydrophilic and hydrophobic states or oleophilic and oleophobic states, and enabling rapid production of images on a recording medium. The heat-sensitive material comprises an acrylamide polymer and a silicon material.Type: ApplicationFiled: April 1, 2009Publication date: October 7, 2010Applicant: Xerox CorporationInventors: Jin Wu, Jing Zhou
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Publication number: 20100248116Abstract: A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 ?m. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.Type: ApplicationFiled: March 24, 2010Publication date: September 30, 2010Inventors: Takanori KAMOTO, Takayuki Yamanaka, Osamu Wada, Tadashi Iwamatsu, Nobuyuki Yoshioka
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Publication number: 20100227264Abstract: A photoreceptor including an electroconductive substrate, a photosensitive layer located overlying the electroconductive substrate, and a surface layer located overlying the photosensitive layer, the surface layer including a cross-linked material of a radical polymerizable monomer having at least 3 functional groups with no charge transport structure and a radical polymerizable compound having a charge transport structure, the surface layer having a sulfur concentration of 50 ppmw or lower.Type: ApplicationFiled: March 5, 2010Publication date: September 9, 2010Applicant: RICOH COMPANY, LTD.Inventors: Yoshiaki KAWASAKI, Kazukiyo Nagai, Yukio Fujiwara
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Patent number: 7776502Abstract: A toner for developing an electrostatic charge image, includes: a binder resin formed by reacting a polymerizable aromatic monomer having an ethylenically unsaturated double bond conjugated to an aromatic ring thereof, a nitrogen-containing polymerizable aliphatic monomer having an ethylenically unsaturated double bond and a sulfur-containing aliphatic compound to each other; and a colorant, wherein a ratio (MN/MS) of an amount of nitrogen (MN) to an amount of sulfur (MS) is in a range of from 1.0 to 15.Type: GrantFiled: April 26, 2007Date of Patent: August 17, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Norihito Fukushima, Rieko Kataoka, Sakon Takahashi, Toshiyuki Yano
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Publication number: 20100203436Abstract: An electrophotographic photoconductor system for use in an electrophotographic device and method of using the same. The electrophotoconductor system comprises an electroconductive support, a charge generation layer disposed on the electroconductive support, and a charge transport layer disposed on the charge generation layer. The charge generation layer includes a photosensitive material comprising titanyl phthalocyanine, and at least one oligomeric phenylene additive. The electrophotographic photoconductor system is capable of absorbing light having a wavelength of about 350 nm to about 850 nm.Type: ApplicationFiled: February 11, 2009Publication date: August 12, 2010Inventors: Mark Thomas Bellino, Weimei Luo, Scott Daniel Reeves, Tanya Yvonne Thames
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Patent number: 7771910Abstract: An image forming method is disclosed, comprising (a) forming a toner image on an image forming body, (b) transporting the image forming body to a transfer region, (c) overlapping an image supporting body onto the image forming body, (d) radiating ultrasonic waves onto the image forming body and the image supporting body by an ultrasonic radiation means with applying an electric field between the image forming body and the image supporting body to transfer the toner image onto the image supporting body and (e) subjecting the toner image on the image supporting body to contact heat-fixing to fix the toner image, wherein a toner is comprised of toner particles containing a resin, a colorant and a releasing agent, and the toner particles exhibiting a coefficient of variation of shape factor of not more than 16% and a coefficient of variation of number particle size distribution of not more than 27%.Type: GrantFiled: August 23, 2004Date of Patent: August 10, 2010Assignee: Konica Minolta Holdings, Inc.Inventors: Hiroshi Yamazaki, Hiroyuki Yamada, Tomoe Kitani
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Publication number: 20100190101Abstract: There is provided a technique capable of reducing a transfer residual ratio of a toner to an image carrier. A developer includes a magnetic particle, and a toner particle charged by the magnetic particle, and when a relation between an adhesion force F of the toner particle to an image carrier of an image forming apparatus and a square of a charge amount q of the toner particle is represented by a linear function approximate expression of F=K×q2+F0 based on a particle size distribution of the toner particle, a value of a proportional constant K of the square of the charge amount q of the toner particle and a value of a non-electrostatic adhesion force F0 satisfy a specified relation.Type: ApplicationFiled: January 28, 2010Publication date: July 29, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Shoko Shimmura
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Patent number: 7754315Abstract: The invention relates to a toner receiver element comprising a marking enhancement layer comprising inorganic particles and a polymer film-forming binder.Type: GrantFiled: November 30, 2004Date of Patent: July 13, 2010Assignee: Eastman Kodak CompanyInventors: Mridula Nair, Tamara K. Jones, Daniel M. Leusch
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Patent number: 7745082Abstract: A photoreceptor drum is disclosed with a charge transport layer comprising a substituted terphenyl diamine having the structure of Formula (I): wherein R1 and R2 are independently selected from the group consisting of hydrogen, alkyl having from 1 to 10 carbon atoms, halogen, and phenyl; and wherein at least one of R1 and R2 is not hydrogen.Type: GrantFiled: August 9, 2007Date of Patent: June 29, 2010Assignee: Xerox CorporationInventors: Nancy L. Belknap, John F. Yanus, Dale S. Renfer, Anthony M. Horgan, Kendra M. Giza
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Patent number: 7736725Abstract: The present invention provides a laminate film for electrophotography including a substrate, a laminate layer formed on one surface of the substrate, and a non-laminate layer formed on the other surface of the substrate, wherein the non-laminate layer contains at least a resin and fine particles and satisfies the inequalities (1) 1.5?R?5; (2) 0.1?t<R; and (3) 7/R?n, wherein R represents a volume average particle diameter (?m) of the fine particles; t represents a thickness (?m) of the non-laminate layer; and n represents the number of the fine particles contained in the non-laminate layer per 10,000 square ?m in the substrate plane direction (particles/(100 ?m)2).Type: GrantFiled: July 31, 2008Date of Patent: June 15, 2010Assignee: Fuji Xerox Co., Ltd.Inventors: Kunio Sakurai, Tomoo Kobayashi, Kaoru Torikoshi
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Publication number: 20100124714Abstract: A developing agent is used for a recycle type image forming apparatus including an image bearing body on which an electrostatic latent image is developed with the developing agent and an image transferred to a transfer medium is formed, and includes a toner particle, a magnetic carrier to charge the toner particle to a specified polarity, and a circulation agent which is charged to a polarity reverse to that of the toner particle in the developing agent, has a primary particle diameter of 20 to 100 ?m, has a magnetization lower than that of the magnetic carrier, and has a transfer efficiency of 0 to 10% from the image bearing body to the transfer medium.Type: ApplicationFiled: November 17, 2009Publication date: May 20, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Hiroshi Kawaguchi
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Publication number: 20100119964Abstract: An electrophotographic photoreceptor including a conductive substrate and a photosensitive layer located overlying the conductive substrate. The photosensitive layer comprises a specific diamine compound.Type: ApplicationFiled: November 6, 2009Publication date: May 13, 2010Inventors: Tomoyuki Shimada, Naohiro Toda, Yoshinori Inaba
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Publication number: 20100119963Abstract: The presently disclosed embodiments relate in general to electrophotographic imaging members, such as layered photoreceptor structures, and processes for making and using the same. More particularly, the embodiments pertain to an improved photoreceptor that exhibits little to no response to injected charges and demonstrates excellent ghosting properties.Type: ApplicationFiled: November 12, 2008Publication date: May 13, 2010Applicant: XEROX CORPORATIONInventors: Markus R. Silvestri, Jin Wu, M. John Hinckel, David M. Skinner, Kent J. Evans, Robert J. Meyer, Kathleen M. Carmichael, Dale S. Renfer
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Patent number: 7709171Abstract: The present invention provides a charge control agent, adapted to control charging ability of resins or compositions containing resins, comprising a copolymer that comprises a polymer block A and a polymer block B, the polymer block A is prepared by copolymerizing a maleimide, which being unsubstituted or substituted for a hydrogen atom of an imide group by an electron-donating group, and styrene or a styrene derivative, and the polymer block B is formed of a polymer of styrene or a styrene derivative.Type: GrantFiled: July 18, 2007Date of Patent: May 4, 2010Assignee: Ricoh Company, Ltd.Inventors: Atsushi Yamamoto, Chiyoshi Nozaki, Tsuyoshi Nozaki, Mitsuyo Matsumoto, Katsunori Kurose
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Publication number: 20100104969Abstract: An organic photoreceptor is disclosed, comprising on an electrically conductive support an intermediate layer, a charge generation layer, a charge transport layer and a protective layer in this order, wherein the protective layer contains inorganic particles in an amount of not less than 5% by mass and not more than 30% by mass, and a skewness (Rsk) of a cross section curve of a surface of the electrically conductive support is within a range of ?8<Rsk<0.Type: ApplicationFiled: October 21, 2009Publication date: April 29, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Fumitaka MOCHIZUKI, Shinichi YABUKI, Chigusa YAMANE, Kunihiro OGURA
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Patent number: 7704654Abstract: An embodiment may be an image forming method, which comprises forming a latent image on an image carrier; developing the latent image with a toner to form a toner image on the image carrier; transferring the toner image; and applying ultrasonic vibration at one of the developing step and the transferring step. The toner comprises a resin particle and a release agent particle having a melting point in a range of 40 to 75° C. and the toner has Dp50 of 3.0 to 5.0 ?m.Type: GrantFiled: February 9, 2005Date of Patent: April 27, 2010Assignee: Konica Minolta Business Technologies, Inc.Inventors: Hiroshi Yamazaki, Meizo Shirose, Masafumi Uchida
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Publication number: 20100086753Abstract: A foiled article and methods of making the foiled article. The foiled article includes a substrate with one or more foiled areas on one or both surfaces of the substrate. The foiled areas are formed by applying a predetermined pattern of toner or ink to the substrate, and bonding a foil material to the patterned areas by the application of heat. The foiled areas can then be printed to create a multi-colored foil, images, or text thereon. The foiled areas can be simultaneously printed with the non-foiled areas. The digital patterning of the toner or ink, as well as the optional digital printing of the foiled areas allow for variable images without the expenditure for stamping dies and printing plates, such that a short-run product can be produced at lower cost with faster turn around times than traditional foiling processes.Type: ApplicationFiled: October 2, 2008Publication date: April 8, 2010Inventors: Wade Johnson, David Spangenberg, Martin Koebel
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Publication number: 20100075241Abstract: A toner set includes a plurality of toners, at least one toner but less than all toners of the toner set including binder, colorant and fluorescence agent and remaining additional toners including binder, colorant and free of fluorescence agent. At least a first toner grouping and a second toner grouping of the toner set form a combination, the first and second groupings of the combination exhibiting a substantially same color under ambient light conditions upon image formation. The first toner grouping and the second toner grouping of the combination contain a different amount of the fluorescence agent, wherein upon exposure to activating energy, the fluorescence agent fluoresces to cause a visible change in the color of a pattern formed in an image by the first toner grouping as compared to the second toner grouping.Type: ApplicationFiled: September 19, 2008Publication date: March 25, 2010Applicant: XEROX CORPORATIONInventors: Peter M. KAZMAIER, Gabriel IFTIME, Daryl W. VANBESIEN, Edward G. ZWARTZ, Shen-ge WANG, Reiner ESCHBACH
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Patent number: 7682766Abstract: In an image forming method in which a toner image, which is visualized via an electrostatic latent image formed on an electrophotographic photoreceptor, employing a developer incorporating toner, is transferred onto a recording material followed by fixing, and any residual toner remaining on the electrophotographic photoreceptor is removed, an image forming method in which an electrophotographic photoreceptor and a toner which satisfy specified requirements are employed and image formation is carried out while feeding a surface energy lowering agent from the developer onto the aforesaid electrophotographic photoreceptor, and an image forming apparatus employing the same.Type: GrantFiled: April 18, 2007Date of Patent: March 23, 2010Assignee: Konica Minolta Business Technologies, Inc.Inventors: Shingo Fujimoto, Takao Yamanouchi, Hirofumi Koga, Masaaki Kondo, Shiro Hirano, Junya Onishi
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Publication number: 20100068641Abstract: An electrophotographic developer including: magnetic particles, and a toner containing toner particles charged with the magnetic particles and having a particle diameter distribution, wherein the toner exhibits cumulative toner weight distributions of both square of charge amount q2 [C2] and attachment force F [N] per particle with respect to a representative toner particle diameter in the particle diameter distribution, giving a linear approximation of plots of the attachment force F [N] versus the square of charge amount q2 [C2] per particle at a plurality of corresponding cumulative toner weight ratios, and the linear approximation satisfies a slope of the linear approximation of from 5×1020 to 3×1022 and a squared multiple correlation coefficient (R2) of 0.6 or more. As a result, the developer allows good control of transferability under the control of an electric field and allows a reduction in transfer residual amount of the toner.Type: ApplicationFiled: September 14, 2009Publication date: March 18, 2010Applicants: KABUSHIKI KAISHA TOSHIBA, TOSHIBA TEC KABUSHIKI KAISHAInventor: Shoko Shimmura
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Publication number: 20100068635Abstract: A photoreceptor including a layer including a crosslinked material obtained by polymerizing at least a vinyl group-containing triarylamine compound, a radically polymerizable monomer which has at least three radically polymerizable groups in a molecule and has no charge transport structure, and an optional radically polymerizable polycarbonate. An image forming apparatus including the photoreceptor, a charger configured to charge the photoreceptor, a light irradiating device configured to irradiate the charged photoreceptor to form an electrostatic latent image; a developing device configured to develop the electrostatic latent image with a developer including a toner to form a toner image, and a transferring device configured to transfer the toner image onto a receiving material.Type: ApplicationFiled: September 10, 2009Publication date: March 18, 2010Applicant: RICOH COMPANY, LTD.Inventor: Yuuji TANAKA
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Publication number: 20100062356Abstract: An embodiment of toner for electrostatic development may include toner base particles, and resin fine particles. Further, some embodiments may include external additives, such as hydrophobic silica. In some embodiments, the resin fine particles may include a polymer having an isobornyl group-containing acrylate monomer.Type: ApplicationFiled: May 21, 2009Publication date: March 11, 2010Applicant: KYOCERA MITA CORPORATIONInventor: Koji KURAMASHI
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Publication number: 20100062353Abstract: A multicolor image forming apparatus which includes a developer image forming unit to form an image using a developer and a transferring unit to transfer the formed developer image to a recording medium, wherein the developer comprises a plurality of dark developers and one or more light developers, wherein the dark developers and the light developers each include a binder resin having a weight average molecular weight from about 50,000 Mw to about 160,000 Mw, and wherein about 50,000 Mw to about 160,000 Mw of the weight average molecular weight of the binder resin of the dark developer is larger than about 50,000 Mw to about 160,000 Mw of the weight average molecular weight of the binder resin of the light developer.Type: ApplicationFiled: April 30, 2009Publication date: March 11, 2010Applicant: Samsung Electronics Co., LtdInventor: Tae-hyun KIM
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Publication number: 20100062354Abstract: A full-color toner set including a yellow component, a cyan component, and a magenta component, wherein in each of the color components, resin fine particles are added to a surface of base particles. Further, the yellow component may include a monoazo pigment serving as a colorant in the base particles. In addition, the following formulae (1) and (2) may be satisfied, where the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the yellow component is represented by Wy, the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the cyan component is represented by Wc, and the amount of addition of the resin fine particles based on 100 parts by mass of base particles in the magenta component is represented by Wm, Wy>Wc ??(1) Wy>Wm ??(2).Type: ApplicationFiled: May 11, 2009Publication date: March 11, 2010Applicant: KYOCERA MITA CORPORATIONInventor: Koji KURAMASHI
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Patent number: 7666564Abstract: Disclosed is an image forming method employing an apparatus comprising a plurality of toner image forming units, which forms a plurality of toner images and transfer them onto an intermediate transferring member in sequence, and the transferred images is transferred onto a recording sheet. The developer is a non-magnetic single component toner and turbidity of toners of each color is less than 60; and the maximum turbidity difference among the toners is 5-45.Type: GrantFiled: October 19, 2004Date of Patent: February 23, 2010Assignee: Konica Minolta Business Technologies, Inc.Inventors: Masao Asano, Tomoe Kitani
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Patent number: 7662530Abstract: Provided is an image forming apparatus containing a latent electrostatic image bearing member, a latent electrostatic image forming unit configured to form a latent electrostatic image on the latent electrostatic image bearing member, a developing unit configured to develop the latent electrostatic image using a toner to form a toner image, and a transferring unit configured to transfer the toner image on a recording medium, wherein a surface of the toner is coated with an external additive containing fine particles having an average particle diameter Da of 100 nm to 300 nm, and a value obtained by dividing an average F of non-electrostatic adhesion between the toner and the latent electrostatic image bearing member by a product of volume average particle diameter of the toner Dt and average particle diameter of the external additive Da, [F/(Dt×Da)] is 7.5×104 N/m2 or less.Type: GrantFiled: June 22, 2006Date of Patent: February 16, 2010Assignee: Ricoh Company, Ltd.Inventor: Haruo Iimura
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Patent number: 7648813Abstract: By using an intaglio plate for holding a pattern formed by a developing agent, a transfer device for transferring patterns developed on the intaglio plate to a transfer object medium, and a baking chamber for eliminating an electrode layer after transfer or heightening resistance thereof, the patterns developed on the intaglio plate are transferred onto the electrode layer disposed at the opposite side of the transfer object medium, and then heated in the baking chamber, whereby the electrode layer is eliminated or heightened in resistance.Type: GrantFiled: November 11, 2008Date of Patent: January 19, 2010Assignee: Kabushiki Kaisha ToshibaInventors: Mitsunaga Saito, Yasushi Shinjiyo, Yoshihiro Tajima, Koichi Ishii, Masahiro Hosoya, Ken Takahashi
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Publication number: 20100009278Abstract: A toner is provided which has toner particles and a fine silica powder mixed by external addition to the toner particles. The toner has a weight average particle diameter of 4.0 to 9.0 ?m. The fine silica powder is subjected to hydrophobic treatment with dimethylsilicone oil, and has, in particle size distribution based on volume, a peak at which cumulative frequency is largest, in the measurement range of 0.02 ?m to 1,000.00 ?m; the cumulative frequency of 0.10 ?m to less than 1.00 ?m being 7.0% or less, and, the fine silica powder fulfills the following conditions: 1) A+B?93.0; 2) 0.45?A/B?6.00; and 3) the value of [(carbon content of the treated fine silica powder)/(BET specific surface area of fine silica powder before hydrophobic treatment)] is 0.030 or more to 0.055 or less.Type: ApplicationFiled: September 21, 2009Publication date: January 14, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Naotaka Ikeda, Shinya Yachi, Katsuyuki Nonaka, Emi Watanabe, Koji Abe, Nobuhisa Abe