Patents Examined by Christopher D. Rodee
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Patent number: 10935900Abstract: A toner for developing an electrostatic charge image includes toner particles containing a binder resin; and an external additive containing silica particles, in which a coefficient of variation of a Si content is determined by determining the Si content in 0.5 ?m×0.5 ?m square regions in a surface of each of the toner particles after performing a process of dispersing the toner in water and drying the dispersed toner, and an amount of change between this coefficient of variation of the Si content and a coefficient of variation of a Si content before the process ((coefficient of variation of Si content after process)?(coefficient of variation of Si content before process)) is 0.05 or more and 0.60 or less.Type: GrantFiled: August 6, 2019Date of Patent: March 2, 2021Assignee: FUJI XEROX CO., LTD.Inventors: Daisuke Ishizuka, Narumasa Sato, Yuka Kawamoto, Erina Saito, Norimasa Ozora, Kotaro Yoshihara, Noriyuki Mizutani
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Patent number: 10921725Abstract: The present disclosure relates to a process for printing a substrate. The process comprises applying an analogue primer over a print substrate. A transparent electrophotographic composition comprising a coupling agent is electrophotographically printed on the primer as a coupling layer. An electrophotographic ink composition is then printed on the coupling layer to form an image layer. The coupling layer is disposed between the primer and image layer and in contact with each of the primer and image layer.Type: GrantFiled: March 24, 2016Date of Patent: February 16, 2021Assignee: HP Indigo B.V.Inventors: Inna Tzomik, Daniel Skvirsky, Faina Kogan, Gleb Romantcov, Asaf Salant, Daniel Tulchinski
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Patent number: 10908523Abstract: Provided is a toner including toner particles. The toner particles has a volume particle diameter distribution index on a side of the largest diameter (GSDv (90/50)) of 1.26 or less; a number particle diameter distribution index on a side of the smallest diameter (GSDp (50/10)) of 1.28 or less; GSDv (90/50)/GSDp (50/10) of from 0.96 to 1.01; and an average circularity of 0.95 or more and 1.00 or less.Type: GrantFiled: May 24, 2018Date of Patent: February 2, 2021Assignee: FUJI XEROX CO., LTD.Inventors: Atsushi Sugawara, Satoshi Miura, Akira Matsumoto, Sakiko Hirai, Yasuo Kadokura
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Patent number: 10884350Abstract: A toner is provided. The toner comprises a binder resin, a colorant, and a release agent. The binder resin comprises a polyester resin comprising a crystalline polyester resin. The crystalline polyester resin forms domains having a number average long diameter of from 0 to 50 nm in a cross-section of the toner. The toner satisfies the following relation: G?(50)/G?(90)?6.0×102 where G?(50) and G?(90) represent storage elastic modulus of the toner at 50 degrees C. and 90 degrees C., respectively.Type: GrantFiled: June 26, 2019Date of Patent: January 5, 2021Assignee: Ricoh Company, Ltd.Inventors: Toma Takebayashi, Taichi Nemoto
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Patent number: 10877392Abstract: There is provided a process for heat transfer printing, comprising electrostatically printing a transparent electrostatic ink composition (3) onto a transfer material (2), wherein the transparent electrostatic ink composition comprises a thermoplastic resin; printing an image (4) on the transparent electrostatic ink composition; contacting the image with a target substrate (1) under conditions such that the thermoplastic resin of the transparent electrostatic ink composition is softened or molten, and separating the target substrate and the transfer material, to leave the target substrate having thereon the image and an overlying layer of transparent electrostatic ink composition. Also disclosed is a fabric having thereon an image, the image having an overlying layer of transparent electrostatic ink composition.Type: GrantFiled: October 23, 2015Date of Patent: December 29, 2020Assignee: HP Indigo B.V.Inventors: Inna Tzomik, Hannoch Ron, Daniel Skvirsky, Raia Slivniak, Gleb Romantcov
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Patent number: 10877390Abstract: Toner, including: a toner particle that contains a binder resin and a wax, wherein the binder resin includes an amorphous resin A, and, in dynamic viscoelasticity measurement of the toner, when the temperature at which the loss elastic modulus G? measured at a frequency of 1 Hz becomes 1.00×106 Pa is set as T(1 Hz), when the temperature at which the loss elastic modulus G? measured at a frequency of 20 Hz becomes 1.00×106 Pa is set as T(20 Hz), and when the maximum value of the ratio (tan ?) of the loss elastic modulus G? with respect to the storage elastic modulus G?, measured at a frequency of 20 Hz, in a range of from 60° C. to 90° C. is set as tan ?(P), the toner satisfies T(20 Hz)?T(1 Hz)?7.0° C., 0.80?tan ?(P)?1.90, 60° C.?T(1 Hz)?80° C., and 60° C.?T(20 Hz)?80° C.Type: GrantFiled: July 30, 2019Date of Patent: December 29, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Tsutomu Shimano, Reo Tagawa, Taku Shimoda, Yoshihiro Nakagawa
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Patent number: 10871723Abstract: An electrophotographic photosensitive member (1) includes a conductive substrate (2) and a photosensitive layer (3) disposed directly or indirectly on the conductive substrate (2). The photosensitive layer (3) has a charge generating layer (3a) and a charge transport layer (3b) disposed in order from the conductive substrate (2). The charge generating layer (3a) contains a charge generating material. The charge transport layer (3b) contains a charge transport material, a binder resin, and a pigment that absorbs light having an irradiation wavelength.Type: GrantFiled: December 28, 2017Date of Patent: December 22, 2020Assignee: KYOCERA Document Solutions Inc.Inventors: Kensuke Okawa, Seiki Hasunuma, Jun Azuma
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Patent number: 10859937Abstract: Herein is described a liquid electrophotographic adhesive composition comprising a thermoplastic resin, a moisture activatable adhesive, and a liquid carrier.Type: GrantFiled: March 21, 2017Date of Patent: December 8, 2020Assignee: HP Indigo B.V.Inventors: Inna Tzomik, Ziv Gilan, Faina Kogan, Gleb Romantcov
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Patent number: 10845721Abstract: A toner has a toner particle that has a binder resin and a release agent, wherein when the temperature when G?=1.0×105 Pa in a dynamic viscoelastic measurement on the toner is denoted by Ta, and the glass transition temperature in a differential scanning calorimetric measurement on the toner is denoted by Tg, the Ta and the Tg satisfy the following formulas: 40° C.?Tg?70° C., 60° C.?Ta?90° C., and 0° C.?Ta?Tg?35° C.; and the toner has a storage elastic modulus G? having a minimum value in the range from 110° C. to 150° C. in a dynamic viscoelastic measurement on the toner.Type: GrantFiled: October 14, 2019Date of Patent: November 24, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Masatake Tanaka, Tsuneyoshi Tominaga, Noriyoshi Umeda, Satoshi Otsuji, Shinsuke Mochizuki
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Patent number: 10838313Abstract: An electrophotographic photosensitive member includes, in this order, a support, a charge generating layer having a thickness of more than 200 nm and containing a hydroxygallium phthalocyanine pigment or a chlorogallium phthalocyanine pigment as a charge generating material, and a charge transport layer containing a charge transporting material. The charge generating material satisfies a requirement for a specific parameter.Type: GrantFiled: April 23, 2018Date of Patent: November 17, 2020Assignee: Canon Kabushiki KaishaInventors: Kazuko Araki, Kaname Watariguchi, Masataka Kawahara, Jumpei Kuno
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Patent number: 10838314Abstract: The electrophotographic photosensitive member includes an undercoat layer and a surface layer on or above a support in this order, in which the undercoat layer contains metal oxide particles and a specific binder resin, the surface layer contains a charge transporting substance, fluororesin particles, and a specific binder resin, an arithmetic average roughness Ra of a surface of the undercoat layer is 0.15 ?m or less, a refractive index (a) of the metal oxide particles and a refractive index (b) of the binder resin contained in the undercoat layer satisfy a specific relationship, and a refractive index (c) of the binder resin contained in the surface layer and a refractive index (d) of the fluororesin particles satisfy a specific relationship.Type: GrantFiled: October 16, 2019Date of Patent: November 17, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Tatsuya Ikezue, Kumiko Takizawa, Ikuyo Kuroiwa, Kan Tanabe, Tsuyoshi Shimada, Haruhiko Mitsuda, Takanori Ueno
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Patent number: 10838315Abstract: An electrophotographic photosensitive member having a protective layer wherein the density unevenness among output images is reduced with abrasion resistance maintained is provided. The present invention is an electrophotographic photosensitive member having a support, a photosensitive layer and a protective layer in this order, wherein the protective layer has a triarylamine structure and a cyclic structure represented by the formula (1) or (2): and an A value expressed by expression (4), A=S1/S2, wherein, in expression (4), S1 is a peak area based on in-plane deformation vibration of terminal olefin (CH2?), and S2 is a peak area based on stretching vibration of C?O among peak areas of a spectrum obtained by measuring a surface of the protective layer by total reflection Fourier transform infrared spectroscopy using Ge as an internal reflection element and using a measurement condition of 45° as an incidence angle is from 0.065 to 0.100.Type: GrantFiled: February 11, 2019Date of Patent: November 17, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Hideharu Shimozawa, Tsutomu Nishida, Atsushi Okuda, Yuka Ishiduka, Nobuhiro Nakamura, Hiroyuki Watanabe
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Patent number: 10828827Abstract: Provided is a three-dimensional object formation method for forming a three-dimensional object by at least repeating: forming a powder material layer using a powder material for three-dimensional object formation containing a base material coated with an organic material; and hardening a predetermined region of the powder material layer by delivering a hardening liquid to the powder material layer formed in the formation of a powder material layer, where the hardening liquid contains a cross-linking agent cross-linkable with the organic material.Type: GrantFiled: September 29, 2014Date of Patent: November 10, 2020Assignee: RICOH COMPANY, LTD.Inventors: Teruki Kusahara, Masaki Watanabe, Keiko Osaka, Mitsuru Naruse, Mariko Kojima, Yasuyuki Yamashita, Yoshihiro Norikane
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Patent number: 10831117Abstract: Provided is an electrophotographic photosensitive member that is improved in potential stability in long-term use under a high-temperature and high-humidity environment, and does not cause degradation in image quality, such as a low density. The electrophotographic photosensitive member includes: a support; an undercoat layer formed on the support; a charge-generating layer formed directly on the undercoat layer; and a charge-transporting layer formed on the charge-generating layer. The undercoat layer contains a polyamide resin, titanium oxide particles surface-treated with an organic silicon compound, and a compound represented by the following Formula (1), and has a content of the compound represented by the Formula (1) of 4 ppm or more and 80 ppm or less: in the Formula (1), R and R? each independently represent a methyl group or an ethyl group.Type: GrantFiled: November 18, 2019Date of Patent: November 10, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Akira Sakakibara, Yota Ito, Jumpei Kuno, Shuhei Iwasaki, Kohei Makisumi
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Patent number: 10809638Abstract: An electrophotographic photosensitive member includes a conductive substrate and a photosensitive layer. The photosensitive layer is a single-layer photosensitive layer and contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. A hole mobility ?h is at least 1.00×10?7 cm2/V/second and an electron mobility ?e is at least 4.00×10?8 cm2/V/second in the photosensitive layer as measured under conditions of a temperature of 23° C. and an electric field intensity of 1.50×105 V/cm. A ratio (?h/?e) of the hole mobility ?h to the electron mobility ?e is at least 1.0 and no greater than 50.0.Type: GrantFiled: July 24, 2019Date of Patent: October 20, 2020Assignee: KYOCERA Document Solutions Inc.Inventors: Eiichi Miyamoto, Yohei Yamamoto
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Patent number: 10809640Abstract: A toner that is suppressed from deteriorating owing to its long-term use and can maintain high transferability. The toner includes: a toner particle containing an amorphous polyester serving as a binder resin and a polymer A; and inorganic fine particles, wherein the polymer A includes a graft copolymer of a polyolefin and a vinyl-based polymer unit having a carboxylate anion group, and a metal ion having a valence of 2 or more.Type: GrantFiled: August 26, 2019Date of Patent: October 20, 2020Assignee: CANON KABUSHIKI KAISHAInventors: Yosuke Iwasaki, Kenta Mitsuiki, Wakiko Katsumata, Takeshi Ohtsu, Masaharu Miura, Koh Ishigami, Takakuni Kobori, Takaho Shibata, Daisuke Yamashita, Hitoshi Sano, Ryo Nakajima, Rei Hijikawa, Yuichi Mizo
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Patent number: 10802411Abstract: An electrophotographic photosensitive member includes a photosensitive layer of a single layer. The photosensitive layer contains a charge generating material, a hole transport material, an electron transport material, and a binder resin. An optical response time is 0.05 milliseconds or longer and 0.85 milliseconds or shorter. The optical response time is a time from irradiation of a surface of the photosensitive layer charged to +800 V with pulse light having a wavelength of 780 nm to decay of a surface potential of the photosensitive layer from +800 V to +400 V. The pulse light has an intensity that allows the surface potential of the photosensitive layer to decay to +200 V from +800 V after 400 milliseconds elapse from the irradiation of the surface of the photosensitive layer charged to +800 V with the pulse light. The photosensitive layer has a Martens hardness at 50° C. of at least 160 N/mm2.Type: GrantFiled: March 16, 2018Date of Patent: October 13, 2020Assignee: KYOCERA Document Solutions Inc.Inventors: Yuko Iwashita, Kazunari Hamasaki, Kazutaka Sugimoto
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Patent number: 10787572Abstract: The invention relates to azo pigment mixtures which contain at least one azo pigment of formula (IIIa) and at least one azo pigment of formula (IIIb) where X1, Y, Z1 and V in formula (IIIa) and formula (IIIb) are independent of each other and are defined as described, and the azo pigments of formula (IIIa) and formula (IIIb) are different.Type: GrantFiled: June 20, 2016Date of Patent: September 29, 2020Assignee: Clariant Plastics & Coatings LtdInventors: Ulrike Rohr, Joachim Eichhorn
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Patent number: 10786945Abstract: The invention relates to a method, a device and a binding agent system for producing three-dimensional models.Type: GrantFiled: October 29, 2014Date of Patent: September 29, 2020Assignee: VOXELJET AGInventors: Ingo Ederer, Daniel Günther, Ulrich Recknagel, Florian Mögele
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Patent number: 10782625Abstract: The invention relates to the use of pigment mixtures which contain at least one pigment of formulas (la) and (lb), wherein variables X1, X2, X3, X4, Y1, Y2, Z1 and Z2 are as defined and wherein the pigment mixtures are useful as dyes in printing methods.Type: GrantFiled: May 31, 2016Date of Patent: September 22, 2020Assignee: Clariant Plastics & Coatings LtdInventors: Ulrike Rohr, Gemma Solduga Ramirez, Joachim Eichhorn