Epoxy Or Oxirane Compound (e.g., Glycidyl, Etc.) Binder Patents (Class 430/109.2)
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Patent number: 11034803Abstract: A color masterbatch composition, comprising a thermoplastic polyester, a yellow colorant component, a red colorant component, and a blue colorant component. The yellow colorant component is selected from Pigment Yellow 147, Pigment Yellow 181, Pigment Yellow 183, Dye Brown 53, or a combination thereof. The red colorant component is selected from Pigment Red 122, Pigment Red 144, Pigment Red 202, Pigment Red 214, or combination thereof. The blue colorant component is selected from Pigment Blue 60, Dye Blue 67, or a combination thereof. The present invention further provides a colloidal particle that is obtained by developing the above masterbatch composition in a base material mainly composed of thermoplastic polyester. An article produced from the present disclosure has an effect of slowing down and reducing heat absorption and can maintain its original color during processing.Type: GrantFiled: February 13, 2018Date of Patent: June 15, 2021Inventors: Yiu Fai Lee, Wen-Yuan Su
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Patent number: 10988608Abstract: A resin composition includes an organic pigment, a resin, and a solvent, in which a content of a Na atom is 0.01 to 50 mass ppm with respect to a total solid content of a resin composition.Type: GrantFiled: June 17, 2019Date of Patent: April 27, 2021Assignee: FUJIFILM CorporationInventors: Kazutaka Takahashi, Tetsushi Miyata, Hiromu Koizumi
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Patent number: 10954374Abstract: A resin composition includes an organic pigment, a resin, and a solvent, in which a content of a Na atom is 0.01 to 50 mass ppm with respect to a total solid content of a resin composition.Type: GrantFiled: June 17, 2019Date of Patent: March 23, 2021Assignee: FUJIFILM CorporationInventors: Kazutaka Takahashi, Tetsushi Miyata, Hiromu Koizumi
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Patent number: 10409181Abstract: Disclosed herein is a master batch for toners, said master batch containing an acrylic polymer (A) and a polyester resin (B1) in a specific mass ratio. A toner disclosed herein contains the master batch and a polyester resin (B2), and has a content of the acrylic polymer (A) of 5% by mass or less. Methods for producing a master batch for toners are also disclosed herein and include a step of mixing an acrylic polymer (A) and a polyester resin (B1) in a specific mass ratio. Methods for producing a toner are also disclosed herein and include a step of mixing the master batch and a polyester resin (B2) so that a content of the acrylic polymer (A) is at a specific amount.Type: GrantFiled: March 5, 2018Date of Patent: September 10, 2019Assignee: Mitsubishi Chemical CorporationInventor: Tadahiro Ozawa
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Patent number: 9885968Abstract: The toner including a crystalline polyester resin dispersed in an amorphous polyester resin obtained by polymerizing a bivalent alcohol component and a dicarboxylic component, the crystalline polyester resin containing a linear saturated aliphatic polyester unit and being dispersed by a monoester-based wax added as a detaching agent, wherein the crystalline polyester resin in the toner has a dispersion diameter of 100 nm or more and 500 nm or less, and the monoester-based wax has a dispersion diameter of 200 nm or more and 1,000 nm or less.Type: GrantFiled: October 21, 2016Date of Patent: February 6, 2018Assignee: Sharp Kabushiki KaishaInventors: Yuya Kondo, Osamu Wada, Yoritaka Tsubaki
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Patent number: 9780376Abstract: Disclosed is a highly reliable secondary battery, as well as an electrode and a conductive agent used therefor, which battery has a long cycle life and is also less likely to be damaged or rupture even when the battery temperature becomes abnormally high. The conductive agent of the battery electrode contains, as the main component, a reaction product between a ?-conjugated carbon material and a soluble polyimide, preferably a soluble block copolymerized polyimide. The battery electrode is formed by coating a composition containing this conductive agent and an electrode active substance onto a current collector. The battery comprises this electrode.Type: GrantFiled: May 13, 2015Date of Patent: October 3, 2017Assignees: PI R&D CO., LTD., MORI POLYMER CO., INC.Inventors: Takaki Mori, Toshiyuki Goshima, Maw Soe Win
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Patent number: 9417540Abstract: Provided is a toner obtained by melting and kneading a binder resin containing a polyester resin A and a polyester resin B, a colorant, and a wax, in which in the resin A, the content of a polyhydric alcohol unit derived from an aromatic diol, the content of a polyhydric alcohol unit derived from an oxyalkylene ether of a novolac type phenol resin, and the content of a polyvalent carboxylic acid unit derived from an aliphatic dicarboxylic acid, which contains a straight-chain hydrocarbon having 4 or more to 16 or less carbon atoms as a main chain and has carboxyl groups at both of its terminals, fall within specific ranges, and in the resin B, the content of a polyhydric alcohol unit derived from an aromatic diol and the content of a polyvalent carboxylic acid unit derived from an aromatic dicarboxylic acid or a derivative thereof fall within specific ranges.Type: GrantFiled: December 12, 2014Date of Patent: August 16, 2016Assignee: CANON KABUSHIKI KAISHAInventors: Takeshi Hashimoto, Hideki Kaneko, Nozomu Komatsu, Takakuni Kobori, Yosuke Iwasaki, Ichiro Kanno, Kohji Takenaka, Hiroyuki Fujikawa
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Patent number: 9340661Abstract: The object of the present disclosure is to obtain coated magnesium oxide particles suitably usable as a heat-releasing material in the electric/electronic field by improving acid resistance and water resistance. Coated magnesium oxide particles having a surface coating formed by curing an epoxy resin are provided.Type: GrantFiled: February 11, 2014Date of Patent: May 17, 2016Assignee: Sakai Chemical Industry Co., Ltd.Inventors: Masahiro Suzuki, Ken-Ichi Nakagawa
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Patent number: 9280074Abstract: Provided is a toner binder that is excellent in heat resistant storage properties and hot offset resistance properties and also affords excellent anti-blocking properties of paper when printing continuously. The present invention is directed to a toner binder comprising a crystalline resin (A), wherein the crystalline resin (A) comprises two or more crystalline resins (a) and the endothermic peak temperature group that is composed of all of the endothermic peak temperatures of the respective two or more crystalline resins (a) has two or more different endothermic peak temperatures; and a resin particle containing the toner binder.Type: GrantFiled: March 14, 2014Date of Patent: March 8, 2016Assignee: Sanyo Chemical Industries, Ltd.Inventors: Masashi Minaki, Tsuyoshi Izumi, Taiji Yamashita
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Patent number: 9069294Abstract: A transfer assist member comprising a plurality of layers, at least one of the layers being a check film layer comprised of a crosslinked mixture of an epoxy resin and a carboxylated polyester.Type: GrantFiled: January 15, 2014Date of Patent: June 30, 2015Assignee: Xerox CorporationInventors: Jin Wu, Kyle B. Tallman, John J. Wilbert, Jonathan H. Herko
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Publication number: 20150079516Abstract: A binder resin for toner includes a carboxy group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E), a reactant thereof, and a fatty acid metal salt (M), in which the carboxy group-containing vinyl resin (C) includes a high molecular weight vinyl resin (H) having a peak in a region in which the molecular weight is equal to or more than 2.5×104 and equal to or less than 1.2×105 in the molecular weight distribution of a THF soluble content and a low molecular weight vinyl resin (L) having a peak in a region in which the molecular weight is equal to or more than 2×103 and equal to or less than 2×104 in the molecular weight distribution of a THF soluble content. The reactant of the carboxy group-containing vinyl resin (C) and the glycidyl group-containing vinyl resin (E) is formed in the presence of the fatty acid metal salt (M).Type: ApplicationFiled: May 15, 2013Publication date: March 19, 2015Inventors: Hiroshi Matsuoka, Hiroyuki Takei
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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: 8916322Abstract: The present disclosure describes toner that is composed substantially of biodegradable and recycled materials.Type: GrantFiled: November 15, 2012Date of Patent: December 23, 2014Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Shigang Qiu, Santiago Faucher, Ke Zhou, John Abate, John Kallo
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Publication number: 20140272698Abstract: Toner contains a binder resin containing two or more kinds of crystalline resins; and a coloring agent, wherein the two or more kinds of crystalline resins have at least two endothermic peak temperatures in a set of endothermic peak temperatures of the two or more kinds of crystalline resins as measured by differential scanning calorimetry (DSC).Type: ApplicationFiled: March 14, 2014Publication date: September 18, 2014Inventors: Masahide YAMADA, Atsushi Yamamoto, Satoyuki Sekiguchi, Keiji Makabe, Kohsuke Nagata, Toyoshi Sawada
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Patent number: 8828636Abstract: It is an object of the present invention to provide a new alcohol compound, a polyester resin, an unsaturated polyester resin, a resin particle and an electrophotographic toner using the compound capable of using the renewable resources as a part of a raw material. An alcohol compound according to the present invention is characterized by representing the chemical formula [Chemical 1]. Furthermore, the polyester resin or the unsaturated polyester resin according to the present invention, is characterized in that the compound (wherein X is an aliphatic or an aromatic residue, Y is a refined rosin residue, a disproportionated rosin residue or a hydrogenated rosin residue, and n=0 to 1 in the formula.) is an essential component of an alcohol component. Further, the resin particle of the present invention is characterized by comprising the polyester resin.Type: GrantFiled: March 2, 2011Date of Patent: September 9, 2014Assignee: Japan U-Pica Company, Ltd.Inventors: Tetsuji Moroiwa, Nobutaka Yoshida, Hiroshi Aihara, Akira Yamane, Kei Yamasaki, Keiko Taniuchi
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Patent number: 8785097Abstract: Disclosed is a decolorable toner produced by aggregating dispersed fine particles of a color material containing at least a color-forming compound, a color-developing agent and a decoloring agent with dispersed fine particles containing at least a binder resin having a carboxyl group, then adding a compound having a carbodiimide group or an epoxy group reactive with the carboxyl group of the binder resin, and thereafter fusing the aggregate particles, respectively in an aqueous medium. The thus obtained decolorable toner can suppress the generation of fine powder by the release of erasable color material fine particles from the toner particles.Type: GrantFiled: June 29, 2012Date of Patent: July 22, 2014Assignee: Toshiba Tec Kabushiki KaishaInventors: Takayasu Aoki, Motonari Udo, Tsuyoshi Itou, Masahiro Ikuta, Takafumi Hara
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Publication number: 20140178811Abstract: Methods for making toner particles comprising a polyester-wax resin, wherein the polyester-wax resin includes a bio-based oil that is chemically incorporated into the main chain of the polyester resin. The toner particles may be formed using emulsion aggregation methods. A toner formed from the toner particles may be used in low-oil or oil-less fusing systems.Type: ApplicationFiled: February 25, 2014Publication date: June 26, 2014Applicant: XEROX CORPORATIONInventor: Valerie M. FARRUGIA
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Patent number: 8722297Abstract: The present invention relates to a resin binder for toners which contains a crystalline polyester which is produced by polycondensing at least an alcohol component containing an aliphatic diol having 2 to 12 carbon atoms and a carboxylic acid component containing an aliphatic dicarboxylic acid compound having 8 to 12 carbon atoms in an amount of from 70 to 100 mol %, wherein a content of a methyl ethyl ketone soluble component (at 20° C.) in the crystalline polyester is from 0.5 to 7% by weight on the basis of a weight of the crystalline polyester, and a difference between a melting point of the crystalline polyester and a peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component (“melting point of the crystalline polyester”?“peak top temperature observed in DSC measurement of the methyl ethyl ketone soluble component”) is within the range of from 1 to 15° C.Type: GrantFiled: March 8, 2011Date of Patent: May 13, 2014Assignee: Kao CorporationInventors: Eiji Shirai, Hiroki Kakiuchi
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Publication number: 20140106271Abstract: Provided is a polyester being a polymer including a dicarboxylic acid, a rosin diol, and an epoxy compound, the rosin diol being represented by general formula (1): wherein R1 and R2 are independently hydrogen or methyl; L1, L2, and L3 are independently a divalent linking group selected from the group consisting of carbonyl, ester, ether, sulfonyl, optionally substituted chain alkylenes, optionally substituted cyclic alkylenes, optionally substituted arylenes, and combinations thereof; L1 and L2 or L1 and L3 are optionally joined together to form a ring; and A1 and A2 are rosin ester groups.Type: ApplicationFiled: May 9, 2013Publication date: April 17, 2014Applicant: FUJI XEROX CO., LTD.Inventors: Shiori CHONAN, Sumiaki YAMASAKI
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Patent number: 8614041Abstract: Disclosed is a toner for electrophotography containing at least a binder resin. This toner for electrophotography is characterized in that (a) the tetrahydrofuran (THF) soluble content in the toner has a first peak in the molecular weight region of not less than 2,000 but less than 5,000 and a second peak in the molecular weight region of not less than 100,000 but less than 200,000 in the chromatogram obtained by gel permeation chromatography (GPC); (b) the binder resin contains at least a carboxyl group-containing vinyl resin (C) and a glycidyl group-containing vinyl resin (E); and (c) the mass ratio of the styrene monomer to the acrylic monomer in the binder resin, namely (S/A), is not less than 4.6 but less than 8.5.Type: GrantFiled: December 18, 2007Date of Patent: December 24, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Matsuoka, Kazuya Sakata, Hiroyuki Takei, Kenji Uchiyama, Ichiro Sasaki
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Patent number: 8586273Abstract: Disclosed is a binder resin for a toner containing at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E), a reaction product of the vinyl resins and a saturated crystalline polyester (S), wherein the saturated crystalline polyester (S) has a predetermined melting point and a predetermined metal component (M), and the binder resin for a toner has a predetermined loss modulus (G?) and a predetermined storage modulus (G?).Type: GrantFiled: November 15, 2010Date of Patent: November 19, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Matsuoka, Hiroyuki Takei, Linwood Blanton Muire, III
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Patent number: 8586272Abstract: The present disclosure provides toner compositions able to prevent the formation of mold or bacterial growth during storage. In embodiments, toners may include at least one biocide that prevents the formation of mold and/or bacteria in a toner composition, including any emulsion that may be utilized in forming the toner composition. In embodiments, the biocide may also improve charging characteristics of the toner.Type: GrantFiled: July 28, 2009Date of Patent: November 19, 2013Assignee: Xerox CorporationInventors: Kimberly D. Nosella, Maria N. V. McDougall, Melanie Lynn Davis
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Patent number: 8450039Abstract: Provided is a binder resin for color toners which comprises at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product thereof, wherein the storage modulus G? at 160 degrees centigrade is not less than 20 and less than 800 Pa measured at a frequency of 6.28 rad/sec, the tetrahydrofuran (THF) soluble portion in the binder resin has a main peak in the molecular weight region of not less than 20,000 and less than 40,000 in the molecular weight distribution measured by gel permeation chromatography (GPC), and the binder resin contains at least one of releasing agents having a melting point of not lower than 60 and not higher than 120 degrees centigrade in an amount of not less than 3.5 and not more than 12 mass % based on 100 mass % of the total amount of the carboxyl group-containing vinyl resin (C), the glycidyl group-containing vinyl resin (E) and a reaction product thereof.Type: GrantFiled: August 27, 2008Date of Patent: May 28, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Hiroshi Matsuoka, Kazuya Sakata, Hiroyuki Takei, Kenji Uchiyama, Ichirou Sasaki
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Publication number: 20130130166Abstract: A binder resin for a toner containing a vinyl resin (A), a non-crystalline polyester resin (SN) and a saturated crystalline polyester resin (SC), in which the content of the vinyl resin (A) is equal to or more than 65 mass % and equal to or less than 95 mass %, based on the total content of 100 mass % of (A), (SN) and (SC), (A) is composed of a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product of the vinyl resins, the ester group concentration of (SC) is equal to or more than 10.0 mmol/g and equal to or less than 13.5 mmol/g, (SN) is dispersed in an island form in (A) and (SC) is contained in the island phase of (SN), and the metal component (M) containing at least one kind selected from the group consisting of Zn, Ca, Mg, Al and Ba (excluding metal oxide) is contained at least in (SC).Type: ApplicationFiled: July 29, 2011Publication date: May 23, 2013Applicant: MITSUI CHEMICALS, INC.Inventors: Hiroshi Matsuoka, Hiroyuki Takei, Linwood Blanton Muire, III
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Patent number: 8445170Abstract: Provided is a binder resin for color toners which comprises at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product thereof, and contains both a tetrahydrofuran (THF) soluble portion and a THF insoluble gel portion, wherein the THF soluble portion has a main peak in the molecular weight region of not less than 10,000 and less than 15,000 in the chromatogram obtained by gel permeation chromatography (GPC), the content of the THF insoluble gel portion is less than 1 mass %, and the softening point is not more than 130 degrees centigrade.Type: GrantFiled: August 27, 2008Date of Patent: May 21, 2013Assignee: Mitsui Chemicals, Inc.Inventors: Kazuya Sakata, Hiroshi Matsuoka, Hiroyuki Takei, Kenji Uchiyama, Ichirou Sasaki
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Patent number: 8377618Abstract: A toner is provided including a mother toner including a crystalline polyester resin, an amorphous resin, and a wax, and an external additive in an amount of from 0.30 to 0.55 parts by weight based on 100 parts by weight of the mother toner. The toner satisfies the following equation 0.36?(2.77×C/R+1.97×W/R)/X?1.85, wherein each of C, W, and R represents a height of an absorbance peak specific to the crystalline polyester resin, the wax, and the amorphous resin, respectively, measured by a FT-IR ATR method, and X represents an amount (parts by weight) of the external additive. An image forming method and apparatus using the toner are also provided.Type: GrantFiled: September 15, 2008Date of Patent: February 19, 2013Assignee: Ricoh Company LimitedInventors: Hyo Shu, Yasuaki Iwamoto, Yasutada Shitara, Minoru Masuda
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Patent number: 8357479Abstract: A toner comprising: a component consisting of a thermoplastic resin containing an amorphous plant-derived resin having a carboxyl group; a component consisting of a crystalline epoxy resin having a glycidyl group; a component consisting of a cross-linked resin generated through a reaction between the carboxyl group of the plant-derived resin and the glycidyl group of the crystalline epoxy resin; and a colorant.Type: GrantFiled: August 27, 2010Date of Patent: January 22, 2013Assignee: Sharp Kabushiki KaishaInventors: Satoru Ariyoshi, Yasuhiro Shibai
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Publication number: 20130011778Abstract: An electrophotographic toner obtained from a dispersion or emulsion liquid of an oil phase containing a toner material in an aqueous medium, the toner including: a binder resin, wherein the toner material includes: (A) an epoxy resin prepolymer; (B) an adduct of a dihydric phenol with a polyalkylene oxide; (C) a phenolic compound, or an alcohol compound, or both thereof; and (D) a carboxylic acid compound, and wherein the binder resin includes a resin obtained by allowing the (A), the (B), the (C) and the (D) to react with each other.Type: ApplicationFiled: July 2, 2012Publication date: January 10, 2013Inventors: Hiroshi YAMASHITA, Satoyuki Sekiguchi, Daisuke Asahina, Tsuyoshi Sugimoto, Masaki Watanabe, Rintaro Takahashi
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Patent number: 8278020Abstract: The present disclosure provides methods for modifying polymeric resin materials after polymerization to make fine adjustments in the chemical or physical properties of the resin, or in modifying the structure of the polymer chains. The resulting resins may be useful in forming toner particles. In embodiments, a polymeric resin may have epoxy groups added to its backbone to increase its melting point. The resulting polymer, sometimes referred to herein as an epoxidized polymer, may, in turn, be reacted with wax-like components, to increase the compatibility of the polyester with waxes utilized in forming toner particles. In other embodiments, the resulting epoxidized polymer may be reacted with components possessing carboxylic acid groups to adjust the acid value and weight average molecular weight of the resin.Type: GrantFiled: September 10, 2008Date of Patent: October 2, 2012Assignee: Xerox CorporationInventor: Jordan H. Wosnick
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Publication number: 20120231389Abstract: Disclosed is a binder resin for a toner containing at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E), a reaction product of the vinyl resins and a saturated crystalline polyester (S), wherein the saturated crystalline polyester (S) has a predetermined melting point and a predetermined metal component (M), and the binder resin for a toner has a predetermined loss modulus (G?) and a predetermined storage modulus (G?).Type: ApplicationFiled: November 15, 2010Publication date: September 13, 2012Applicant: MITSUI CHEMICALS, INC.Inventors: Hiroshi Matsuoka, Hiroyuki Takei, Linwood Blanton Muire, III
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Patent number: 8034522Abstract: Provided herein are polyester toner resins that may reduce or eliminate the use of Bis A, a common polyester toner resin material that may pose environmental and/or toxicity risks. In addition, the polyester toner resins according to some embodiments of the present invention may have desirable toner resin properties, such as hot offset resistance.Type: GrantFiled: November 8, 2007Date of Patent: October 11, 2011Assignee: Reichhold, Inc.Inventors: Yongning Liu, Alan Toman, Eric Dumain
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Patent number: 8034528Abstract: Provided according to some embodiments of the present invention are hybrid chemically-produced toners produced by a method including forming a resin component including a) at least one of a water reducible acrylic resin and a water dispersible polyester resin; and b) an epoxy; subjecting the resin component to conditions sufficient to form a hybrid resin component; and dispersing the hybrid resin component into water.Type: GrantFiled: November 9, 2007Date of Patent: October 11, 2011Assignee: Reichhold, Inc.Inventors: Yongning Liu, Eric Dumain
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Patent number: 8007976Abstract: 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: GrantFiled: November 1, 2006Date of Patent: August 30, 2011Assignee: Ricoh Company. Ltd.Inventors: Hideki Sugiura, Hiroyuki Fushimi, Osamu Uchinokura, Takahiro Honda, Masami Tomita, Hyo Shu, Ken Umehara
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Patent number: 7998649Abstract: Pigment particles with at least one metal oxide surface additive, wherein the at least one metal oxide surface additive is a metal oxide particle covalently bonded with at least one polycondensation polymer, wherein the pigment particle is a pearlescent or metallic pigment.Type: GrantFiled: March 3, 2008Date of Patent: August 16, 2011Assignee: Xerox CorporationInventors: Karen A. Moffat, Valerie M. Farrugia, Ke Zhou, Richard P. N. Veregin, Cuong Vong, Eric M. Strohm, Wafa F. Bashir
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Patent number: 7985524Abstract: A process for forming curable powder comprises providing an aqueous dispersion of particles of curable resin and optionally particles comprising at least one curing agent; aggregating the particles optionally with the curing agent to form aggregated particles; coalescing the aggregated particles to form fused particles; and removing the fused particles from the aqueous dispersion. By this process, a curable powder is formed. The curable powder may be used in powder coating.Type: GrantFiled: January 28, 2004Date of Patent: July 26, 2011Assignee: Xerox CorporationInventors: Guerino G. Sacripante, Hadi K. Mahabadi, Patricia A. Burns, Dan A. Hays, Kip L. Jugle
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Publication number: 20110171571Abstract: The disclosure provides an electrophotographic toner and methods for preparing the same, including a first binder resin, a second binder resin, a colorant, a releasing agent, a charge control agent, and an ionomer, wherein the second binder resin is a resin derived biomass.Type: ApplicationFiled: August 11, 2010Publication date: July 14, 2011Applicant: Samsung Electronics Co., LtdInventor: In KIM
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Patent number: 7977024Abstract: A process for making toner particles comprising: (a) forming an emulsion comprising a disperse phase including a first aqueous composition and a continuous phase including molten one or more ingredients of a toner composition, wherein there is absent a toner resin solvent in the continuous phase; (b) performing a phase inversion to create a phase inversed emulsion comprising a disperse phase including toner-sized droplets comprising the molten one or more ingredients of the toner composition and a continuous phase including a second aqueous composition; and (c) solidifying the toner-sized droplets to result in toner particles.Type: GrantFiled: December 16, 2005Date of Patent: July 12, 2011Assignee: Xerox CorporationInventors: Ke Zhou, Guerino G. Sacripante, Edward G. Zwartz
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Publication number: 20110151369Abstract: Toner having good dispersibility of a pigment and a release agent therein and having excellent low temperature fixability is provided. The toner includes a binder resin, a pigment and a release agent, and the binder resin includes a graft polymer in which abietic acids and a fatty acid are grafted to a polyfunctional epoxy resin. Image is formed using such a toner.Type: ApplicationFiled: December 22, 2010Publication date: June 23, 2011Inventors: Yasuhiro Shibai, Nobuhiro Maezawa
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Publication number: 20110129775Abstract: The present invention provides an image forming toner including at least a linear polyester resin (b1) as a binder resin, wherein the linear polyester resin (b1) is obtained by reacting a polyester diol (b11) having a polyhydroxycarboxylic acid skeleton, with a polyester diol (b12) other than the polyester diol (b11) in the presence of a chain extending agent.Type: ApplicationFiled: June 17, 2009Publication date: June 2, 2011Inventors: Toyoshi Sawada, Akihiro Kotsugai, Akiyoshi Sabu
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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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Patent number: 7935469Abstract: Disclosed is a developer containing toner and carrier, the toner containing as a binder resin a polyol resin having a plurality of OH groups in a molecule chain having an EX/OH ratio between epoxy groups (EX) and OH groups (OH) of 0.990 to 1.010. The rotational speed ?, pitch ? and conveyance path length ? of an stirring and conveying unit satisfies 1.0×106??×?×??16.0×106. Toner base particles having an electrostatic property satisfies 1.5<[QB/M3600]/[QB/M180]<2.5, toner having an electrostatic property satisfies 0.7<[QT/M3600]/[QT/M180]<1.3, the external additive comprises two types of fine inorganic particles having different resistance values, wherein the particle size distribution Y and added amount X of the fine inorganic particles with smaller resistance satisfy 0.1?x?2.0, and Y?2.6×10?3X+0.0048.Type: GrantFiled: March 14, 2008Date of Patent: May 3, 2011Assignee: Ricoh Company, Ltd.Inventors: Takahiro Honda, Hiroyuki Fushimi, Fumihiro Sasaki, Hisashi Nakajima, Yasuo Asahina
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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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Patent number: 7862972Abstract: Disclosed herein is a polyester resin-based toner binder which can impart both excellent anti-blocking property under high temperature and humidity conditions and low-temperature fixing properties to a toner. The toner binder for developing electrostatic images includes a polycondensation polyester resin produced in the presence of at least one titanium-containing catalyst (a) represented by the following general formula (I) or (II): Ti(—X)m(—OH)n??(I) O?Ti(—X)p(—OR)q??(II) wherein X is a residue formed by removing H of one OH group from a (poly)alkanolamine having 2 to 12 carbon atoms; R is H or a C1 to C8 alkyl group which may have 1 to 3 ether bonds; m is 1 to 4, n is 0 to 3, and the sum of m and n is 4; and p is 1 to 2, q is 0 to 1, and the sum of p and q is 2 (m, n, p, and q are each an integer).Type: GrantFiled: March 16, 2006Date of Patent: January 4, 2011Assignee: Sanyo Chemical Industries, Ltd.Inventor: Naoki Takase
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Patent number: 7842447Abstract: To provide a toner which allows low temperature fixation irrespective of the configuration of a fuser, which is excellent in offset resistance, and which provides high image quality at high and low humidities in a stable manner without causing any image defect over time. A toner containing: a binder resin and a colorant; in which the toner contains a THF-soluble component to be dissolved in tetrahydrofuran (THF); the binder resin component contained in the THF-soluble component contains: a vinyl resin unit (I) formed by at least a carboxyl group-containing vinyl resin and an epoxy group-containing vinyl resin and having an epoxy value of 0.001 to 1.Type: GrantFiled: December 6, 2005Date of Patent: November 30, 2010Assignee: Canon Kabushiki KaishaInventors: Katsuhisa Yamazaki, Masami Fujimoto, Daisuke Yoshiba
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Publication number: 20100248121Abstract: Provided is a binder resin for color toners which comprises at least a carboxyl group-containing vinyl resin (C), a glycidyl group-containing vinyl resin (E) and a reaction product thereof, and contains both a tetrahydrofuran (THF) soluble portion and a THF insoluble gel portion, wherein the THF soluble portion has a main peak in the molecular weight region of not less than 10,000 and less than 15,000 in the chromatogram obtained by gel permeation chromatography (GPC), the content of the THF insoluble gel portion is less than 1 mass %, and the softening point is not more than 130 degrees centigrade.Type: ApplicationFiled: August 27, 2008Publication date: September 30, 2010Inventors: Kazuya Sakata, Hiroshi Matsuoka, Hiroyuki Takei, Kenji Uchiyama, Ichirou Sasaki
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Publication number: 20100239972Abstract: Provided are a toner using a resin having an active hydrogen-containing group, and a method of preparing the toner. The toner using a resin having an active hydrogen-containing group includes a binder resin (A), a cross-linked resin including a THF insoluble content of 99-100 weight %, a colorant, and at least one additive. The cross-linked resin is arranged in the form of a plurality of islands in each particle of the toner.Type: ApplicationFiled: October 22, 2008Publication date: September 23, 2010Applicant: SAMSUNG FINE CHEMICALS CO., LTD.Inventors: Dong Won Kim, Woo Young Yang, Keon II Kim, Dae II Hwang, II Hyuk Kim, Jae Bum Park, II Sun Hwang, Jae Kwang Hwang, Dae Woong Choi, Duck Kyun Ahn
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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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Patent number: 7759432Abstract: The emulsion herein is of an epoxy resin having a glass transition temperature of at least about 40° C., wherein the average diameter of the epoxy resin particles in the emulsion is 500 nm or less. The emulsion may include an epoxy resin, a sulfonated polyester resin and a nonionic surfactant. The emulsion may be used to produce a toner particle in an emulsion aggregation method.Type: GrantFiled: October 13, 2005Date of Patent: July 20, 2010Assignee: Xerox CorporationInventors: Ke Zhou, Anna-Karin Eriksson, Guerino G. Sacripante
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Publication number: 20100080916Abstract: A paper sizing or coating composition is provided, which includes: a first binder resin, which is compatible with dry toner binder resin; a second binder resin, which is compatible with liquid toner binder resin, and which is different from the first binder resin; a first pigment, which has a BET surface area of from greater than zero to about 35 m2/g; and a second pigment, which has a BET surface area of about 35 m2/g or greater, and which is different from the first pigment. Recording sheets which include the composition, methods of making the composition and recording sheets, and methods for making an image are provided.Type: ApplicationFiled: September 11, 2009Publication date: April 1, 2010Applicant: INTERNATIONAL PAPER COMPANYInventors: Jay C. Song, Sen Yang, Michelle X. Wang, Pat Morabito
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Publication number: 20100062358Abstract: The present disclosure provides methods for modifying polymeric resin materials after polymerization to make fine adjustments in the chemical or physical properties of the resin, or in modifying the structure of the polymer chains. The resulting resins may be useful in forming toner particles. In embodiments, a polymeric resin may have epoxy groups added to its backbone to increase its melting point. The resulting polymer, sometimes referred to herein as an epoxidized polymer, may, in turn, be reacted with wax-like components, to increase the compatibility of the polyester with waxes utilized in forming toner particles. In other embodiments, the resulting epoxidized polymer may be reacted with components possessing carboxylic acid groups to adjust the acid value and weight average molecular weight of the resin.Type: ApplicationFiled: September 10, 2008Publication date: March 11, 2010Applicant: XEROX CORPORATIONInventor: Jordan H. Wosnick