Patents Examined by Peter L. Vajda
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Patent number: 11886144Abstract: Provided are a binder resin composition for toner excellent in low-temperature fusing property, storage stability and durability, a toner for developing electrostatic images that contains the binder resin composition for toner, and a method for producing the binder resin composition for toner. The binder resin composition for toner contains a resin composition (C-P) prepared by condensing an acid group-having crystalline resin (C) and a polyalkyleneimine, and an amorphous resin (A).Type: GrantFiled: February 21, 2019Date of Patent: January 30, 2024Assignee: KAO CORPORATIONInventors: Motomu Shibata, Shoichi Murata
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Patent number: 11886145Abstract: Provided is an electrostatic charge image developing toner including toner matrix particles containing at least a binder resin, wherein a photosensitizer having a singlet oxygen generating ability is contained inside the toner matrix particles or in an external additive attached to the toner matrix particles.Type: GrantFiled: June 21, 2022Date of Patent: January 30, 2024Assignee: KONICA MINOLTA, INC.Inventor: Akihiko Itami
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Patent number: 11880163Abstract: A toner includes toner particles. The toner particles each include a toner mother particle and an external additive attached to the surface of the toner mother particle. The external additive includes specific external additive particles. The specific external additive particles have a number average primary particle diameter of at least 30 nm and no greater than 305 nm. The specific external additive particles include antimony-doped tin oxide particles or indium tin oxide particles. A ratio (MSb/(MSn+MSb)) of a mass (MSb) of an antimony atom to a total of the mass (MSb) of the antimony atom and a mass (MSn) of a tin atom in the antimony-doped tin oxide particles is at least 0.04 and no greater than 0.46.Type: GrantFiled: October 13, 2021Date of Patent: January 23, 2024Assignee: KYOCERA Document Solutions Inc.Inventors: Ryota Kobayashi, Naruo Yabe, Takeshi Arakawa, Takeo Mizobe, Masanori Sugahara
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Patent number: 11874630Abstract: A pale-color toner includes toner particles. The toner particles each include a toner mother particle and an external additive attached to a surface of the toner mother particle. The external additive includes specific external additive particles. The specific external additive particles have a number average primary particle diameter of at least 30 nm and no greater than 305 nm. The specific external additive particles include antimony-doped tin oxide particles. A ratio (MSb/(MSn+MSb)) of a mass (MSb) of an antimony atom to a total of the mass (MSb) of the antimony atom and a mass (MSn) of a tin atom in the antimony-doped tin oxide particles is at least 0.04 and no greater than 0.31.Type: GrantFiled: October 13, 2021Date of Patent: January 16, 2024Assignee: KYOCERA Document Solutions Inc.Inventor: Ryota Kobayashi
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Patent number: 11860533Abstract: Extreme ultraviolet (EUV) mask blanks, methods for their manufacture and production systems therefor are disclosed. The EUV mask blanks comprise a substrate, a multilayer stack of reflective layers on the substrate, a capping layer on the multilayer stack of reflecting layers, and an absorber on the capping layer. The absorber comprises a first layer selected from the group consisting of Mo, Nb, V, alloys of Mo, Nb and V, oxides of Mo, oxides of Nb, oxides of V, nitrides of Mo, nitrides of Nb and nitrides of V and a second layer selected from the group consisting of TaSb, CSb, SbN, TaNi, TaCu and TaRu.Type: GrantFiled: March 23, 2021Date of Patent: January 2, 2024Assignee: Applied Materials, Inc.Inventors: Shuwei Liu, Shiyu Liu, Azeddine Zerrade, Vibhu Jindal
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Patent number: 11860570Abstract: A toner set includes a plurality of toners, wherein the toner set includes a first toner containing a yellow colorant and a second toner containing a cyan colorant, the first toner and the second toner each contain a binder resin containing a vinyl-based resin and a crystalline resin, and a release agent containing a hydrocarbon wax, a content of the vinyl-based resin with respect to a total mass of the binder resin is 50% by mass or more, the first toner contains the crystalline resin having a moiety having a crystal structure and a crystal nucleating agent moiety having a crystal nucleating agent, and the second toner contains the cyan colorant that is a compound represented by general formula (1).Type: GrantFiled: June 7, 2021Date of Patent: January 2, 2024Assignee: KONICA MINOLTA, INC.Inventors: Hiroshi Nagasawa, Yusuke Takigaura, Takaki Kawamura, Ami Motohashi, Natsuki Ito, Shiro Hirano
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Patent number: 11853004Abstract: An electrophotographic photoconductor includes: a conductive substrate; and a single-layer-type photoconductive layer that is provided on the conductive substrate, contains a binder resin, a charge generating material, a hole transporting material, and an electron transporting material, and has an index A represented by the following equation (1) in a range of ?7.98 or more and ?7.28 or less, Equation (1): A=(0.057×M)?(0.002×F)?(0.252×?), in which, in the equation (1), M represents a Martens hardness of the single-layer-type photoconductive layer, F represents a Young's modulus of the single-layer-type photoconductive layer, and ? represents an elastic deformation ratio of the single-layer-type photoconductive layer.Type: GrantFiled: July 13, 2021Date of Patent: December 26, 2023Assignee: FUJIFILM Business Innovation Corp.Inventors: Yukimi Kawabata, Keisuke Kusano, Hideya Katsuhara, Natsumi Kaneko
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Patent number: 11841615Abstract: A mask includes a first light-transmitting portion. The first light-transmitting portion includes a target region and at least one compensation region connected to the target region. A planar pattern of the target region includes a plurality of corners, and a planar pattern of each compensation region extends from one of the plurality of corners. An area of the planar pattern of each compensation region is less than an area of the planar pattern of the target region.Type: GrantFiled: May 26, 2020Date of Patent: December 12, 2023Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.Inventors: Shouqiang Zhang, Wenlin Mei, Zhuo Xu, Pengcheng Fu, Zhifu Dong
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Patent number: 11841680Abstract: A toner comprising: a toner particle containing a resin component and a wax; and an inorganic fine particle on the surface of the toner particle, wherein, in a cross section of the toner particle, domains containing the wax are observed, and when among the domains, domains having a major diameter of 10-300 nm are defined as domains S, an occupation area percentage of which a ratio of a total sum of areas occupied by the domains S in a region from a surface of the toner particle to a depth of 600 nm in the cross section with respect to an area of the region, is 3.0-15.0%, and wherein the inorganic fine particle contains a fine particle A having a volume resistivity of 1.0×103 to 3.0×105 ?·cm, and having a relative permittivity ?r of 100 or more.Type: GrantFiled: August 18, 2021Date of Patent: December 12, 2023Assignee: Canon Kabushiki KaishaInventors: Takaaki Furui, Atsuhiko Ohmori, Yasuhiro Hashimoto
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Patent number: 11841679Abstract: A cyan toner is provided. The cyan toner comprises toner particles each comprising a binder resin and a colorant. From 1.0% to 20.0% by number of the toner particles have a CH rate of 7.0% or more in absolute value. The CH rate is calculated from the following formula (1): CH rate (%)=[(In?Iave)/Iave]×100??Formula (1) where, in a Raman spectrum of each toner particle, In represents an integrated intensity within a wavenumber region of from 2,600 to 3,180 cm?1 when an intensity at a wavenumber ? within a wavenumber region of from 2,600 to 2,800 cm?1 is s normalized to 1, where a total intensity of all the toner particles is maximum at the wavenumber ?; and Iave represents an average of the In.Type: GrantFiled: June 2, 2021Date of Patent: December 12, 2023Assignee: Ricoh Company, Ltd.Inventors: Hiyori Fujino, Keisuke Tada, Shoki Matsuda, Fumihiko Chimoto, Ayumi Satoh
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Patent number: 11841678Abstract: A method for producing a toner, including aggregating and coalescing resin particles and colorant particles in an aqueous medium. The resin particles contain, in the same or different particles, an amorphous polyester-based resin which is a polycondensate of an alcohol component containing an aromatic alcohol and a carboxylic acid component, and a crystalline polyester resin. The colorant particles contain a colorant and an addition polymer of a raw material monomer containing an addition-polymerizing monomer having an aromatic group. A ratio by mass of the colorant to the addition polymer in the colorant particles is 50/50 or more and 95/5 or less.Type: GrantFiled: February 8, 2019Date of Patent: December 12, 2023Assignee: KAO CORPORATIONInventors: Shoichi Murata, Manabu Suzuki, Yuki Wakabayashi
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Patent number: 11841677Abstract: An electrophotographic photosensitive member including a support, an intermediate layer, and a photosensitive layer in this order, wherein the intermediate layer comprises a tungsten oxide particle, and the tungsten oxide particle contains a tungsten atom, an oxygen atom, and a cesium atom.Type: GrantFiled: May 17, 2021Date of Patent: December 12, 2023Assignee: Canon Kabushiki KaishaInventors: Taichi Sato, Atsushi Fujii, Hisato Yabuta
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Patent number: 11841681Abstract: A toner comprising a toner particle and an external additive, wherein the external additive comprises a composite particle comprising an organosilicon polymer fine particle covering a surface of an alumina particle, a coverage ratio of the surface of the alumina particle with the organosilicon polymer fine particle is 1 to 50 area %, and given A (nm) as a number-average particle diameter of primary particles of the organosilicon polymer fine particle and B (nm) as a number-average particle diameter of primary particles of the alumina particle, following formulae (I) and (II) are satisfied: A?90??(I) 100?B?1000??(II).Type: GrantFiled: June 15, 2021Date of Patent: December 12, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Taiji Katsura, Hidekazu Fumita, Kentaro Yamawaki, Sara Yoshida, Yusuke Kosaki, Takayoshi Ootsuka
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Patent number: 11835921Abstract: A carrier includes carrier particles. Each of the carrier particles includes a carrier core and a coating layer covering the surface of the carrier core. The coating layer contains a silicone resin and conductive particles. Each of the conductive particles includes a transparent conductive substrate composed of a transparent conductive material and a film covering a surface of the transparent conductive substrate. The film contains silica.Type: GrantFiled: September 24, 2021Date of Patent: December 5, 2023Assignee: KYOCERA Document Solutions Inc.Inventor: Masashi Yamashita
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Patent number: 11835920Abstract: Provided is a toner characterized by including at least a negatively-charged toner master particle, and an external additive externally added onto the surface of the toner master particle, wherein the external additive includes a fine powder and a small particle size silica having an average first particle diameter smaller than that of the fine powder, and wherein the fine powder is a composition containing at least aluminum hydroxide and silica and has a surface treated with silane.Type: GrantFiled: February 1, 2021Date of Patent: December 5, 2023Assignee: SHARP KABUSHIKI KAISHAInventor: Tadanori Kano
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Patent number: 11835873Abstract: A toner has a toner particle containing a binder resin having a first resin and a second resin. The first resin is a crystalline resin, the second resin is an amorphous resin, and the first resin has a first monomer unit, a second monomer unit and a third monomer unit, each having a specific structure. A content of the first monomer unit a content of the third monomer unit in the first resin, and an SP value of the second monomer unit all satisfy a specific ranges, and the second resin contains at least one vinyl-based resin and/or specific hybrid resin, with a cross section of the toner having a domain-matrix structure formed of a matrix including the first resin and domains including the second resin, a number average diameter of the domains being 0.10 to 2.00 ?m.Type: GrantFiled: December 9, 2020Date of Patent: December 5, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Takeshi Hashimoto, Kentaro Kamae, Ichiro Kanno, Hayato Ida
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Patent number: 11835874Abstract: A toner comprising a toner particle comprising a core particle comprising a binder resin and a wax, and a shell formed on a surface of the core particle, wherein the wax comprises a wax A, the shell comprises a resin comprising a functional group B, the wax A has a surface charge density DA of ?0.0080 to ?0.0025, and an absolute difference |DA?DB| between the surface charge density DA of the wax A and a surface charge density DB of the functional group B is not more than 0.0025.Type: GrantFiled: July 16, 2021Date of Patent: December 5, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Kazuyuki Sato, Tomohisa Sano
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Patent number: 11829104Abstract: A toner comprising a toner particle comprising a binder resin and a crystalline resin, wherein the binder resin comprises an amorphous resin, when the toner is measured with a temperature-modulated differential scanning calorimeter, at least one endothermic peak derived from the crystalline resin is present in a temperature range from 55.0° C. to 95.0° C. in a total heat flow; and a ratio of an endothermic quantity of the endothermic peak in a reversing heat flow to an endothermic quantity of the endothermic peak in the total heat flow is 50.0% or more, a glass transition temperature Tg1st obtained in the reversing heat flow in a first temperature rise and a glass transition temperature Tg2nd obtained in a reversing heat flow in a second temperature rise satisfy Tg1st?Tg2nd?7.0° C.Type: GrantFiled: April 27, 2021Date of Patent: November 28, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Takuya Mizuguchi, Yoshitaka Suzumura, Hiroyuki Tomono, Osamu Matsushita, Shotaro Nomura
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Patent number: 11829105Abstract: An image forming method comprising a fixing step of fixing a toner image to a recording material while nipping and conveying the recording material, on which the toner image has been formed, by a fixing nip portion, wherein the toner comprises a toner particle comprising a toner base particle and an organosilicon polymer on a surface thereof, the organosilicon polymer has a structure represented by R—SiO3/2, where R is an C1 to C6 alkyl group or a phenyl group, the organosilicon polymer has convex portions formed on an outer surface thereof, and the convex portions satisfy specific relationships, and a contact pressure ? (MPa) of the pressure member and the fixing film and a storage elastic modulus G (MPa) of the toner at a temperature of a surface of the fixing film when the recording material is nipped and conveyed by the fixing nip portion satisfy specific relationships.Type: GrantFiled: January 11, 2021Date of Patent: November 28, 2023Assignee: CANON KABUSHIKI KAISHAInventors: Ai Suzuki, Kazuhiro Funatani, Kensuke Umeda, Shinsuke Kobayashi, Masamichi Sato, Masatake Tanaka
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Patent number: 11829103Abstract: An electrostatic image developing toner includes an amorphous polyester resin and a crystalline polyester resin, wherein a Net intensity NNa of a Na element and a Net intensity NCl of a Cl element, the Net intensities NNa and NCl being determined by X-ray fluorescence analysis, satisfy 2.5?NCl/NNa?260.0.Type: GrantFiled: January 14, 2021Date of Patent: November 28, 2023Assignee: FUJIFILM Business Innovation Corp.Inventors: Daisuke Noguchi, Atsushi Sugawara, Yoshimasa Fujihara, Shintaro Anno, Satoshi Miura