Dry Multicolor Toner (i.e., Composition Containing More Than One Colored Toner (e.g., Cyan, Magenta, And Yellow Toners, Etc.)) With Chemically Identified Colorant Or Colorant Identified By Color Patents (Class 430/107.1)
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Publication number: 20110177441Abstract: The present disclosure provides processes for producing images of excellent color fidelity when incorporating a cyan toner with a lower colorant loading in addition to a first cyan toner. In embodiments, the cyan pigmented particles may be cyan emulsion aggregation toners. In accordance with the present disclosure, a pair of cyan toners are matched in color, wherein the color of a first cyan toner printed at a predetermined halftone area coverage on a substrate substantially matches the color of the solid (100%) printed patch of the second cyan toner, which is lighter than the first cyan toner, thus avoiding a visible hue shift on the print that would otherwise be objectionable. In embodiments, the light cyan toner is color matched by adding a hue-adjusting colorant or combination of colorants which absorb wavelengths of light between 500 and 600 nanometers, and optionally adding a shade-adjusting colorant or combination of colorants which absorb wavelengths of light between 400 and 500 nanometers.Type: ApplicationFiled: January 19, 2010Publication date: July 21, 2011Applicant: Xerox CorporationInventors: Daryl W. Vanbesien, Karen Ann Moffat, Yi Xin Gong, Edul N. Dalal, Jing Wang, Richard P.N. Veregin, Jordan H. Wosnick, Cuong Vong, Valerie M. Farrugia
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Publication number: 20110159424Abstract: Provided are a method of forming a toner image and an electrophotographic image forming apparatus including a toner. The method of forming a toner image is performed using a first toner having a yellow color and color coordinate values of a lightness (L) ranging from 91 to 94, a redness (a) ranging from ?11 to ?9, and a yellowness (b) ranging from 77 to 82; a second toner having a magenta color and color coordinate values of a lightness (L) ranging from 56 to 61, a redness (a) ranging from 56 to 61, and a yellowness (b) ranging from ?7 to ?5; and a third toner having a cyan color and color coordinate values of a lightness (L) ranging from 58 to 62, a redness (a) ranging from ?33 to ?30, and a yellowness (b) ranging from ?42 to ?37.Type: ApplicationFiled: June 4, 2009Publication date: June 30, 2011Applicant: SAMSUNG FINE CHEMICALS CO., LTDInventors: Dae Woong Choi, Woo Young Yang, Keon Il Kim, Dae Il Hwang, Il Hyuk Kim, Jae Bum Park, Il Sun Hwang, Jae Kwang Hwang, Dong Won Kim, Duck Kyun Ahn
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Publication number: 20110086304Abstract: The present disclosure provides toners and methods for their production. In embodiments, the toner may include a core/shell configuration, with a non-crosslinked resin and a crosslinked resin in the core, with a second non-crosslinked resin in the shell, pigment/pigments and a wax possessing both branched and linear carbons.Type: ApplicationFiled: October 8, 2009Publication date: April 14, 2011Applicant: Xerox CorporationInventors: Daniel W. Asarese, Grazyna E. Kmiecik-Lawrynowicz, Samir Kumar, Maura A. Sweeney, Siddhesh N. Pawar, Robert D. Bayley
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Publication number: 20110081606Abstract: Disclosed is an electrostatic image developing toner comprised of toner particles containing a binding resin and a coloring agent, and the coloring agent contains a black color material and a cyan color material, the content of the black color material being 0.5 to 3 parts by mass with respect to 100 parts by mass of the above binding resin, as well as the content of the cyan color material being 0.1 to 0.5 parts by mass with respect to 100 parts by mass of the above binding resin.Type: ApplicationFiled: September 28, 2010Publication date: April 7, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Hidemasa SAWADA, Kazuhiko NAKAJIMA, Miyuki MURAKAMI
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Publication number: 20110053072Abstract: A toner set has toners used in an image forming method by forming a toner image with toners of several colors and fixing the toner image onto a recording medium. The toners include first and second toners of different colors. The first and second toners contain toner base particles including a binding resin, a colorant and a wax. The colorant of the first toner contains a quinacridone pigment. The wax includes a carnauba wax and a wax other than the carnauba wax. The base particles of the first toner have a mass % Wq1 of carnauba wax and Wo1 of the other wax and the base particles of the second toner have a mass % Wq2 of carnauba wax and Wo2 of the other wax. These mass % values are selected to satisfy the following: Wq1/(Wq1+Wq2)<Wo1/(Wo1+Wo2) 3?Wo1+Wo2<Wq1+Wq2?10.Type: ApplicationFiled: August 17, 2010Publication date: March 3, 2011Applicant: KYOCERA MITA CORPORATIONInventor: Koji Kuramashi
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Publication number: 20110045394Abstract: An electrostatic image developing toner set includes two or more toners different in hue, wherein a difference between maximum and minimum values of an absorption rate ? in a range of from 380 nm to 1,500 nm of each of the two or more toners is about 0.1 or less, the absorption rate ? being represented by the following equation (1): Absorption ? ? rate ? ? ? = { ? ? = 380 1500 ? e ? ? ( 1 - 1 10 A ? ) } / { ? ? = 380 1500 ? e ? } ( 1 ) wherein e? represents an emission intensity of a light source at a wavelength ?, and A? represents an absorbance of a toner at a wavelength ?.Type: ApplicationFiled: February 11, 2010Publication date: February 24, 2011Applicant: FUJI XEROX CO., LTDInventors: Noriyuki MIZUTANI, Shinichi YAOI, Yasushige NAKAMURA
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Publication number: 20110039198Abstract: The present disclosure relates to a magenta toner formulation that may be used in a toner printer cartridge for an electrophotographic printer. The magenta toner may include polymer resin binder containing three polymer resins with different number average molecular weight values. The concentration of such polymer resins may be selected to provide a desired temperature versus viscosity behavior for the magenta toner that may be configured to conform to the viscosity versus temperature provide for yellow, cyan and black toner.Type: ApplicationFiled: August 13, 2009Publication date: February 17, 2011Inventors: Danielle Renee Ashley, James Robert Combes, John Joseph Earley, Lale Gokbudak Lovell, George Pharris Marshall, Walter Mychajlowskij
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Publication number: 20110008720Abstract: Disclosed are a toner for developing an electrostatic image, a full color toner kit and an image formation method, the toner containing at least a resin and a colorant, wherein the colorant comprises a quinacridone pigment having a number average primary particle size of from 30 to 150 nm and having a ratio of a major axis direction length to a minor axis direction length of from 1.0 to 2.0 and Pigment Red 238.Type: ApplicationFiled: July 2, 2010Publication date: January 13, 2011Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Hiroyuki YASUKAWA, Hiroshi YAMAZAKI, Kaori SOEDA
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Publication number: 20100330484Abstract: Black particles include a black pigment; and a cyan pigment, wherein when the reflectance to light of wavelength of 420 nm and the reflectance to light of wavelength of 770 nm of plural samples are measured, the standard deviations (1?) of the measured values are about 1 or less with respect to both wavelengths.Type: ApplicationFiled: December 4, 2009Publication date: December 30, 2010Applicant: FUJI XEROX CO., LTD.Inventor: Shigeru SEITOKU
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Publication number: 20100316945Abstract: According to embodiments illustrated herein, there is provided a black toner having a resin, an optional additive, and at least two or more colored pigments, and the at least two or more colored pigments are selected from the group consisting of a blue pigment, a green pigment, a red pigment. a magenta pigment, a cyan pigment, a yellow pigment, a white pigment, and mixtures thereof, and the black toner has a colorimetric value L* of about less than 30.Type: ApplicationFiled: August 26, 2010Publication date: December 16, 2010Applicant: XEROX CORPORATIONInventors: Mark Scheuer, Mark Petrush, James Winters, John Ianni, Julia Kohlmeier, William Hollenbaugh, JR., Kip Jugle, Jeffrey McEwen
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Patent number: 7842445Abstract: A toner for printing documents that are difficult to chemically or physically forge and that are readily easy to visually verify and methods of using and forming the toner are disclosed. The toner includes a colorant for printing an image on a surface of a document, a fluorescent pigment that under normal lighting is masked by the colorant but creates a visible image on the first surface of the a substrate when irradiated by black or ultra-violet light, and a dye for forming a latent version of the image underneath a surface of a substrate. An image formed using the toner of the invention is readily verified by comparing the colorant-formed image and the dye-formed image. In addition, if a solvent is used in an attempt to alter the printed image on the substrate, the dye migrates or diffuses to indicate tampering with the document.Type: GrantFiled: April 26, 2007Date of Patent: November 30, 2010Assignee: Troy Group, Inc.Inventors: Michael R. Riley, Kevin L. Heilman, Carrie A. Gilson, Linda M. Barnum, Bruce Littleton
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Patent number: 7838192Abstract: According to embodiments illustrated herein, there is provided a black toner having a resin, an optional additive, and at least two or more colored pigments, and the at least two or more colored pigments are selected from the group consisting of a blue pigment, a green pigment, a red pigment, a magenta pigment, a cyan pigment, a yellow pigment, a white pigment, and mixtures thereof, and the black toner has a calorimetric value L* of about less than 30.Type: GrantFiled: April 24, 2007Date of Patent: November 23, 2010Assignee: Xerox CorporationInventors: Mark Scheuer, Mark Petrush, James Winters, John Ianni, Julia Kohlmeier, William Hollenbaugh, Jr., Kip Jugle, Jeffrey McEwen
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Publication number: 20100266942Abstract: A manufacturing method of an electrophotographic toner is disclosed. The method includes steps of dispersing the minute colored particles having a volume average particle diameter of D1 in the toner binder resin, the toner particle satisfies formula of 3=D2/D1>1, wherein D2 is an average diameter of dye cloud formed by the colored particles in the toner particle.Type: ApplicationFiled: June 30, 2010Publication date: October 21, 2010Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Kaori ONO, Hiroshi YAMAZAKI, Takato CHIBA
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Publication number: 20100248117Abstract: An image forming method includes forming at least one electrostatic charge image on at least one image holding member, developing the at least one electrostatic charge image using a black toner and a color toner to form toner images, transferring toner images to a receiving body, and fixing the toner images by light-irradiation fusing, the black toner being melted in the light-irradiation fusing, the color toner containing an infrared absorber, a light absorptance of the color toner at a peak wavelength of the light irradiated in the light-irradiation fusing being from about 79% to about 98% of a light absorptance of the black toner at the peak wavelength, and the color difference ?E of the color toner due to the presence or absence of the infrared absorber is in a specific range.Type: ApplicationFiled: August 7, 2009Publication date: September 30, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Miho WATANABE, Takashi MATSUBARA, Shinji HASEGAWA, Makoto FURUKI
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Publication number: 20100233606Abstract: A black toner formulation includes at least one non-black colorant selected from the group consisting of dyes, pigments, and combinations thereof. The black toner formulation has a total pigment loading of about 2 percent to less than or equal to about 9.5 percent by weight of total weight of the black toner formulation.Type: ApplicationFiled: March 13, 2009Publication date: September 16, 2010Inventor: Gary Allen Denton
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Publication number: 20100183965Abstract: A red toner for electrostatic image development, includes: a binder resin; a coloring agent; and a release agent, wherein the red toner for electrostatic image development satisfies the following formulae: 0.3<ID<1.2 5°<A<35° wherein ID represents an image density when a first image is formed on a recording material with a toner loaded amount of 4.0 g/m2 of the red toner; and A represents a hue angle of the first image expressed by an L*a*b* color coordinate space, provided that a hue angle of 0° is on the a*+ axis and a hue angle of 90° is on the b*+ axis.Type: ApplicationFiled: September 21, 2009Publication date: July 22, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Kiyohiro YAMANAKA, Satoshi YOSHIDA, Masanobu NINOMIYA
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Publication number: 20100183966Abstract: A toner set for electrostatic image development, includes: at least one kind of a colored toner that contains a coloring agent; and a transparent toner that does not substantially contain a coloring agent, wherein a proportion of particles having a shape factor of 0.94 or less in mother particles of the transparent toner is about 5% by number or less based on particles having a particle diameter of 7.5 to 15 ?m, and a reflectance of the mother particles of the transparent toner is about 90% or more for light at a wavelength of 700 nm.Type: ApplicationFiled: September 21, 2009Publication date: July 22, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Yasuo KADOKURA, Yusuke IKEDA, Yukiaki NAKAMURA, Masanobu NINOMIYA, Susumu YOSHINO
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Publication number: 20100183967Abstract: A toner including a binder resin comprising a resin (a) comprising a polyhydroxycarboxylic acid skeleton formed from an optically-active monomer. The polyhydroxycarboxylic acid skeleton has a weight average molecular weight of from 7,000 to 60,000. The binder resin comprises the polyhydroxycarboxylic acid skeleton in an amount of from 10 to 90% by weight. The optical purity X (%) of the polyhydroxycarboxylic acid skeleton represented by the following formula is 80% or less: X(%)=|X(L-isomer)?X(D-isomer)| wherein X(L-isomer) and X(D-isomer) represent molar ratio (%) of L-isomer and D-isomer of the optically-active monomer, respectively.Type: ApplicationFiled: December 30, 2009Publication date: July 22, 2010Inventors: Akiyoshi Sabu, Akihiro Kotsugai, Ryota Inoue, Keiko Osaka, Shingo Sakashita, Yukiko Nakajima, Satoshi Mochizuki
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Publication number: 20100183964Abstract: An electrostatic image developing green toner includes: a binder resin; a coloring agent; and a release agent, and the electrostatic image developing green toner satisfying the following equations: 0.3<ID<1.2 160°<A<190° wherein ID represents an image density at a time when a first image is formed by a loading amount of 4.0 g/m2 of the green toner on a recording member; and A represents a hue angle of the first image represented by an L*a*b* color coordinate space, provided that an upside of a*+axis is taken as hue angle 0° and an upside of b*+axis is taken as hue angle 90°.Type: ApplicationFiled: August 28, 2009Publication date: July 22, 2010Applicant: FUJI XEROX CO., LTD.Inventors: Satoshi YOSHIDA, Kiyohiro YAMANAKA, Masanobu NINOMIYA
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Publication number: 20100173239Abstract: A low melt or ultra low melt toner includes at least one amorphous polyester of an alkoxylated bisphenol based polyester, a crystalline polyester derived from the reaction of an aliphatic dicarboxylic acid or aromatic dicarboxylic acid with an aliphatic diol, at least one colorant and at least one fluorescence agent. Methods of authentication of the toner, of authentication of documents formed from the toner, of embedding information in documents, and the like are also set forth.Type: ApplicationFiled: March 16, 2010Publication date: July 8, 2010Applicant: XEROX CORPORATIONInventors: Gabriel IFTIME, Karen A. MOFFAT, Jordan H. WOSNICK, Eric ROTBERG, Cuong VONG, Richard P. N. VEREGIN, Peter M. KAZMAIER
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Patent number: 7718330Abstract: An image forming method characterized in that a plurality of toner images which differ in color is formed as superposed; a plurality of the superposed toner images is simultaneously transferred onto a sheet of recording paper; the turbidity of toners of each color which form a plurality of the toner images is less than 60; and the maximum turbidity difference among said toners of each color is 5-45.Type: GrantFiled: October 11, 2005Date of Patent: May 18, 2010Assignee: Konica Minolta Holdings, Inc.Inventors: Masao Asano, Tomoe Kitani
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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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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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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: 20100021838Abstract: Porous particles comprising a polymer binder and at least one additive distinct from any pore stabilizing compound present in the particle, wherein: the polymer binder comprises a solid compositionally continuous phase having an external particle surface; discrete pores are dispersed within the solid compositionally continuous phase, forming internal pore surfaces; and the at least one additive is present primarily in the discrete pores. The additive may further preferably not be present in the solid compositionally continuous phase, and be substantially absent from the external particle surface. A toner set for forming a color electrophotographic image comprising a plurality of different colored toners, where at least one of the different colored toners comprise such porous particles comprising additives, and in a particular embodiment wherein at least two different colored toners each comprise different pigments present primarily in the internal pores. A process of making such porous particles.Type: ApplicationFiled: July 20, 2009Publication date: January 28, 2010Inventors: David D. Putnam, Mridula Nair, Mary C. Brick, Tamara K. Jones
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Patent number: 7642023Abstract: An object of the present invention is to provide a color image forming method capable of forming full color images desired for a precise reproduction to the color tone of high resolution and a halftone in high-end apparatuses. Disclosed is a color image forming method employing 6 kinds of chromatic color toners and a black toner, each toner containing particles having a median particle diameter (D50) of 3-7 ?m in terms of volume, a decline starting temperature of a storage elastic modulus of 10-40° C., a temperature of 70-130° C. in the storage elastic modulus range of 103-104 Pa, and a primary diameter of 40-800 nm.Type: GrantFiled: June 26, 2006Date of Patent: January 5, 2010Assignee: Konica Minolta Business Technologies, Inc.Inventors: Tatsuya Nagase, Makoto Nomiya, Kazuya Isobe
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Publication number: 20090325097Abstract: An aspect of the invention provides a developer that comprises first charged particles and second charged particles that have smaller charge than the first charged particles, or that are charged opposite to the first charged particles. Here, the first particles are colored, while the second particles may be colorless. Alternatively, the first particles are colored, while the second particles may have approximately the same color as a medium.Type: ApplicationFiled: April 16, 2009Publication date: December 31, 2009Applicant: Oki Data CorporationInventor: Kazuteru KURIHARA
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Publication number: 20090291378Abstract: Provided is a set of toners comprising a yellow toner, a magenta toner, a cyan toner and a black toner for forming a full color image with an electrophotographic method, wherein the yellow toner comprises toner particles containing at east one pigment selected from the group consisting of C. I. Pigment Yellow 74, C. I. Pigment Yellow 139, C. I. Pigment Yellow 180, C. I. Pigment Yellow 185 and C. I.Type: ApplicationFiled: May 19, 2009Publication date: November 26, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Naohiro HIROSE, Kaori SOEDA, Shinya OBARA, Tatsuya FUJISAKI, Yohei OHNO
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Patent number: 7621967Abstract: A dye base sulfate and method of making are described. The dye base sulphate of formula (I) is produced with a residual amine content of less than 2000 ppm, as determined by HPLC, by precipitation of the dye base, made by Friedel-Crafts alkylation, substitution and hydrolysis, as the dye base sulphate is a) taken up in water and subjected to a first steam distillation then filtered and optionally dried at 50 to 180° C., b) the pressed cake is treated with water or the optionally dried dye base sulphate is moistened with water, c) subjected to a further steam distillation and filtration and d) dried at 50 to 180° C.Type: GrantFiled: October 21, 2003Date of Patent: November 24, 2009Assignee: Clariant Produkte (Deutschland) GmbHInventors: Eduard Michel, Ruediger Baur, Hans-Tobias Macholdt, Norbert Kohl
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Publication number: 20090286176Abstract: A set of a yellow toner, a magenta toner, a cyan toner and a black toner is disclosed. Each of the color toners contains a colored particle and cerium oxide particles, the colored particle containing an amorphous polyester resin, a crystalline polyester resin, a colorant and a releasing agent; and the yellow toner contains C.I. Pigment Yellow 74, the magenta toner contains C.I. Pigment Red 122 and C.I. Pigment Red 238, the cyan toner contains any one of C.I. Pigment Blue 15:1, C.I. Pigment Blue 15:2 and C.I. Pigment Blue 15:3, and the black toner contains carbon black and any one of C.I. Pigment Blue 15:1, C.I. Pigment Blue 15:2 and C.I. Pigment Blue 15:3.Type: ApplicationFiled: April 21, 2009Publication date: November 19, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Ken OHMURA, Tomomi OSHIBA, Kishio TAMURA, Nagayuki UEDA
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Publication number: 20090253064Abstract: A process for creating custom colors including: creating a plurality of neutral gray scale primary components of varying darkness levels; selecting one or more non-gray scale primary components; and combining one or more of the plurality of neutral gray scale primary components with the one or more non-gray scale primary components; the plurality of neutral gray scale primary components are compatible with dry blending techniques of the one or more non-gray scale primary components in order to shift a hue of a designated target primary.Type: ApplicationFiled: April 7, 2008Publication date: October 8, 2009Applicant: Xerox CorporationInventors: Kip L. Jugle, James A. Winters, Mark Alan Scheuer
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Publication number: 20090246656Abstract: An electrophotographic toner for electrostatic image development which is capable of obtaining a high chroma full-color image exhibiting clear color without color contamination and achieving enhanced lightfastness is disclosed, comprising a resin and a colorant, wherein the colorant comprises a pigment of C.I. Pigment Red 209. There are also disclosed a full-color toner kit and an image forming method by use of the toner.Type: ApplicationFiled: March 20, 2009Publication date: October 1, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio KOUYAMA, Hiroshi YAMAZAKI, Ken OHMURA, Kenji HAYASHI
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Publication number: 20090239168Abstract: Disclosed are a toner for developing an electrostatic image, a full color toner kit and an image formation method layer, the toner comprising at least a resin and a colorant, wherein the colorant includes quinacridone pigment having a number average primary particle size of from 30 to 150 nm and having a ratio of a long axis length to a short axis length of from 1.0 to 2.0.Type: ApplicationFiled: March 20, 2009Publication date: September 24, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio KOUYAMA, Hiroshi YAMAZAKI, Ken OHMURA, Kenji HAYASHI
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Publication number: 20090239164Abstract: An electrophotographic toner for electrostatic image development which is capable of obtaining a high chroma full-color image exhibiting clear color without color contamination and excellent light stability is disclosed, comprising a resin and a colorant, wherein the colorant comprises a pigment of C.I. Pigment Blue 76. There are also disclosed a full-color toner kit and an image forming method by use of the toner.Type: ApplicationFiled: March 18, 2009Publication date: September 24, 2009Applicant: KONICA MINOLTA BUSINESS TECHNOLOGIES, INC.Inventors: Mikio KOUYAMA, Hiroshi YAMAZAKI, Ken OHMURA, Kenji HAYASHI
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Publication number: 20090233199Abstract: A gloss control particle is provided that is configured to form a transparent and colorless gloss control layer on a colored toner image which is to be fixed on a recording medium upon application of heat, wherein the gloss control particle contains a binder resin and a softening agent configured to soften the binder resin upon application of heat, along with a developer containing the gloss control particle and an image forming method using the developer containing the gloss control particle.Type: ApplicationFiled: March 12, 2009Publication date: September 17, 2009Inventors: Chiyoshi NOZAKI, Yoshimichi Ishikawa, Atsushi Yamamoto, Takuya Kadota, Tsuyoshi Nozaki
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Publication number: 20090142680Abstract: A full-color image forming method, including: developing an electrostatic latent image with a two-component developer, including: a toner including: a binder resin, a colorant, and a layered inorganic mineral in which ions between its layers are at least partially modified with an organic ion; and a carrier, wherein the toner includes a black, a yellow, a magenta and a cyan toner and the carrier is formed of a magnetic particulate material coated with a resin, wherein each of the toners are contained in each toner cartridge comprising the carrier, from which the two-component developer is fed into each image developer developing each of the electrostatic latent image and discharging the extra developer therefrom, and wherein each of the toners has a aerated apparent density not greater than 0.40 and a difference of the aerated apparent density between each of the toners is not greater than 0.10.Type: ApplicationFiled: November 14, 2008Publication date: June 4, 2009Inventors: Naohito SHIMOTA, Junichi Awamura, Masahide Yamada
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Publication number: 20090123186Abstract: A toner is provided that comprises a colorant and a binder resin, wherein the binder resin comprises a polyester resin that is prepared by a polycondensation reaction in the presence of at least a titanium-containing catalyst expressed by General Formula (II) or (II), the toner has a volume average particle diameter of 2.0 ?m to 10.0 ?m and a ratio Dv/Dn within a range of 1.00 to 1.Type: ApplicationFiled: November 1, 2006Publication date: May 14, 2009Inventors: Hideki Sugiura, Hiroyuki Fushimi, Osamu Uchinokura, Takahiro Honda, Masami Tomita, Hyo Shu, Ken Umehara
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Publication number: 20090123857Abstract: An image forming apparatus of the present invention includes 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, at least three developing units each configured to develop the latent electrostatic image using a toner to form a visible image, a transferring unit configured to transfer the visible image on a recording medium, and an image fixing unit configured to the transferred image on the recording medium, in which the developing units respectively include any one of a yellow toner, a magenta toner, and a cyan toner, the magenta toner includes C.I. pigment red 269, and the yellow toner includes C.I pigment yellow 180 or C.I pigment yellow 155.Type: ApplicationFiled: November 3, 2008Publication date: May 14, 2009Inventors: Hyo SHU, Mitsuo Aoki, Minoru Masuda, Kumi Hasegawa
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Patent number: 7514190Abstract: An electrophotographic image forming method is disclosed, which includes the steps of developing an electrostatic image on a electrophotographic photoreceptor by a developer, transferring a toner image formed by the development, and fixing the toner image on a recording medium. It is disclosed that a toner has a volume particle diameter (Dv50) of about 4.4 to about 5.8 ?m and displays two or more endothermic peaks measured by DSC being within the rang of from about 50 to about 73° C. and the endothermic heat amount thereof is from 12.6 to 24.5 J/mg and a transferring member and/or a fixing member constituted by a belt containing a polyimide resin are employed in the method.Type: GrantFiled: January 26, 2005Date of Patent: April 7, 2009Assignee: Konica Minolta Business Technologies, Inc.Inventors: Ken Ohmura, Asao Matsushima
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Publication number: 20090081572Abstract: A toner for use in a single component development system, said toner including emulsion aggregation toner particles with a styrene acrylate polymer binder resin having a molecular weight Mw of from about 50 to about 100 Kpse and a number average molecular weight (Mn) of from about 10 to about 30 Kpse, a wax selected from the group consisting of polypropylene and polyethylene, and at least one colorant, wherein the toner particles have an onset glass transition temperature of from about 50° C. to about 60° C., and a circularity of from about 0.950 to about 0.990.Type: ApplicationFiled: September 26, 2007Publication date: March 26, 2009Applicant: XEROX CORPORATIONInventors: Grazyna E. Kmiecik-Lawrynowicz, Daniel W. Asarese, Maura A. Sweeney, Robert D. Bayley
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Patent number: 7507515Abstract: A process for the preparation of color toners whereby the triboelectric charging of the various colors is optimized to permit blending of the colors to form custom colors.Type: GrantFiled: March 15, 2006Date of Patent: March 24, 2009Assignee: Xerox CorporationInventor: James A. Winters
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Publication number: 20090061343Abstract: A toner having its surface functionalized with functional groups, and processes for producing the same, are provided.Type: ApplicationFiled: September 4, 2007Publication date: March 5, 2009Inventors: Zhen Lai, Yuhua Tong, Chieh-Min Cheng
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Patent number: 7485400Abstract: A developer includes a carrier and a toner, wherein the toner contains toner particles of at least one binder, at least one colorant, and external additives, wherein the developer has a trimmer clogging value in relation to toner triboelectric charge and toner cohesion expressed according to the equation (?0.80+0.039×(% toner cohesion)+0.026×(toner triboelectric charge) (?C/g)) of less than or equal to about 3.2.Type: GrantFiled: April 5, 2006Date of Patent: February 3, 2009Assignee: Xerox CorporationInventors: Richard P. N. Veregin, Cuong Vong, Vladislav Skorokhod, Jackie B. Parker, David J. Sanders
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Publication number: 20080241723Abstract: Emulsion aggregation toner particles comprising at least one binder resin and a colorant, wherein the colorant comprises at least one ceramic pigment.Type: ApplicationFiled: March 26, 2007Publication date: October 2, 2008Applicant: XEROX CORPORATIONInventors: Grazyna E. KMIECIK-LAWRYNOWICZ, Maura A. SWEENEY, Robert D. BAYLEY
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Patent number: 7422833Abstract: A charge control resin composition for positive or negative charge, which is prepared either by mixing and kneading a charge control resin for positive or negative charge with a colorant, or by mixing and kneading the above combination further with a charge control resin for opposite charge or a charge control resin composition for opposite charge; wherein colorant particles are finely dispersed as desired. The resultant mixture is mixed with a polymerizable monomer to obtain polymerizable monomer composition. Then, the polymerizable monomer composition is dispersed or emulsified in an aqueous dispersion medium containing a dispersion stabilizer, and polymerized to obtain a toner.Type: GrantFiled: September 27, 2001Date of Patent: September 9, 2008Assignee: Zeon CorporationInventors: Kazu Niwa, Fuminari Oyama
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Patent number: 7416826Abstract: A color toner for electrophotography having excellent fixability and void resistance is capable of forming a high-quality image. The color toner for electrophotography comprises a binder resin and is a magenta toner, and used in combination with at least any of yellow toner and cyan toner. The storage modulus (G?100) (100° C.) of the binder resin is (1/1.1) to (1/10) times the storage modulus (G?100) (100° C.) of a binder resin contained in the yellow toner and the cyan toner. In addition, the color toner for electrophotography comprises a binder resin, C.I. pigment Violet 19, and an infrared absorbent. The color toner is a magenta toner used in combination with at least any of an yellow toner and a cyan toner. The content of the infrared absorbent in the magenta toner is higher than the content of an infrared absorbent in the yellow toner and the cyan toner.Type: GrantFiled: October 17, 2002Date of Patent: August 26, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Yasushige Nakamura, Tomoaki Tanaka
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Patent number: 7410739Abstract: The present invention provides a color image forming developer comprising yellow, magenta, and cyan toners each containing an infrared absorber, wherein the cyan toner has a maximum infrared absorbance in the infrared region lower than that of the magenta toner and that of the yellow toner, to simultaneously attain sufficient fixation capacity and sufficient resistance to void formation, and also provides an improved image forming method and an image forming device using the developer.Type: GrantFiled: September 2, 2004Date of Patent: August 12, 2008Assignee: Fuji Xerox Co., Ltd.Inventors: Yasushige Nakamura, Satoshi Takezawa
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Patent number: 7399566Abstract: The invention provides novel colored toner and developer compositions containing polymeric colorants. Such compositions may contain poly(oxyalkylene) or poly(alkylester) substituted color chromophores which are attached to relatively long chained ologomers. The color toner and developer compositions of the invention resist color bleeding and aggregation, and may retain their color fidelity over extended time periods. Such color toner compositions are useful in color imaging systems. The invention provides novel compositions that can readily be formulated and manufactured using the polymeric or oligomeric colorants. The toners of the invention may contain charge control agents, thermoplastic resins, colorants, and additives.Type: GrantFiled: January 18, 2005Date of Patent: July 15, 2008Assignee: Milliken & CompanyInventors: Itipon Padunchwit, Gordon Boon Ann Lim, Jusong Xia, Kim Ieng Goh, Kheng Teck Chan
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Patent number: 7381509Abstract: The present invention provides: a toner kit having a deep toner and a pale toner which are separated from each other, wherein: the deep toner and the pale toner satisfy prescribed conditions for an L*a*b* color coordinate system where a* represents a hue in the red-green direction, b* represents a hue in the yellow-blue direction, and L* represents a lightness; the pale toner and the deep toner to be used in the toner kit; and a method for forming an image using the toner kit. Thus, the present invention can form a high quality image, while suppressing graininess and roughness over the areas covering from the low density area to the high density area.Type: GrantFiled: August 28, 2007Date of Patent: June 3, 2008Assignee: Canon Kabushiki KaishaInventors: Yasukazu Ayaki, Takeshi Ikeda, Tomohito Ishida, Nobuyuki Itoh
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Patent number: 7361441Abstract: A yellow toner in which, in a spectral-distribution diagram in which the reflectance (%) is plotted as ordinate and the wavelength (nm) as abscissa, the reflectance determined for a toner in a state of powder ranges from 15% to 20% at a wavelength of 500 nm and ranges from 75% to 80% at a wavelength of 600 nm, a cyan toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 30% to 35% at a wavelength of 450 nm and ranges from 35% to 40% at a wavelength of 475 nm, and a magenta toner in which, in the like spectral-distribution diagram, the reflectance determined for a toner in a state of powder ranges from 5% to 10% at a wavelength of 425 nm and ranges from 65% to 70% at a wavelength of 675 nm. These color toners each contain corresponding pigments in specific combination, and promise color reproduction which can ensure the color tones of process inks.Type: GrantFiled: September 21, 2006Date of Patent: April 22, 2008Assignee: Canon Kabushiki KaishaInventors: Takayuki Itakura, Takaaki Kotaki, Takaaki Kaya, Kazuhiko Hayami, Nozomu Komatsu