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公开(公告)号：US11640120B2
公开(公告)日：2023-05-02
申请号：US17261986
申请日：2019-07-16
发明人： Teppei Shibuya , Masahito Ishino , Toshiki Fujita
摘要： An image forming apparatus includes an image bearing member, a charger, a light exposure device, a development device, a transfer belt, a primary transfer device, a secondary transfer device, and a cleaning member. The cleaning member is pressed against a circumferential surface of the image bearing member and collects residual toner remaining on the circumferential surface of the image bearing member as a result of primary transfer of a toner. The transfer belt has a surface resistivity of at least 6 Log Ω and no greater than 11 Log Ω. A linear pressure of the cleaning member on the circumferential surface of the image bearing member is at least 10 N/m and no greater than 40 N/m. The image bearing member includes a conductive substrate and a photosensitive layer of a single layer. The image bearing member satisfies formula (1): 0.06 ≦ V ( Q / S ) × ( d / ε r · ε 0 ) . ( 1 )
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公开(公告)号：US11630402B2
公开(公告)日：2023-04-18
申请号：US17170185
申请日：2021-02-08
发明人： Yusuke Fukuda , Naoki Ota , Masataka Kuribayashi , Takafumi Koide , Katsuyuki Kitajima , Makoto Kamisaki , Tatsuhiro Igarashi , Yasuhisa Morooka , Shota Oshima , Yuma Kubo
摘要： A particle conveying device includes a storage portion that stores pressure sensitive adhesive particles that contain at least a binder resin, have a pressure-induced phase transition property, and have a sulfur content in a range of 0.1 mass % or more and 0.5 mass % or less relative to the entire pressure sensitive adhesive particles as measured by X-ray fluorescence; and a conveying member that is disposed in the storage portion and rotates about a shaft that extends in one direction inside the storage portion to thereby convey the pressure sensitive adhesive particles in a direction along the shaft inside the storage portion.
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公开(公告)号：US11624986B2
公开(公告)日：2023-04-11
申请号：US17117883
申请日：2020-12-10
发明人： Ichiro Kanno , Takeshi Hashimoto , Kentaro Kamae , Hayato Ida
摘要： A toner is provided, which has a toner particle containing a binder resin including a first resin and a second resin, wherein the first resin is a crystalline resin, the second resin is an amorphous resin, the first resin contains a specific amount of a first monomer unit having a specific structure, an acid value of the first resin and an acid value of the second resin are within specific ranges, a domain-matrix structure formed of a matrix containing the first resin and domains containing the second resin appears in cross-sectional observation of the toner, the toner particle contains a multivalent metal element, the multivalent metal element is at least one metal element selected from the group consisting of Mg, Ca, Al, Fe and Zn, and a total content of the multivalent metal element is within a specific range.
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公开(公告)号：US20230103095A1
公开(公告)日：2023-03-30
申请号：US17585496
申请日：2022-01-26
发明人： Yukiaki NAKAMURA , Tomoaki TANAKA , Ryutaro KEMBO
摘要： An electrostatic charge image developing toner includes a toner particle that contains a pyrazolotriazole-based dye and a zirconium oxide particle.
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公开(公告)号：US20230098401A1
公开(公告)日：2023-03-30
申请号：US17577344
申请日：2022-01-17
发明人： Daisuke TOMITA , Tsutomu FURUTA , Daisuke ISHIZUKA
IPC分类号： C08F2/26 , G03G9/08 , C08F212/08 , C08F220/18 , G03G9/087 , G03G9/09 , G03G9/097
摘要： A method of producing resin particles includes a first step of adding a monomer-containing emulsified liquid that contains a polymerizable monomer and an aqueous medium to an aqueous mother medium to polymerize the polymerizable monomer; and a second step of adding an aqueous medium for cooling to the aqueous mother medium after completion of the addition of the monomer-containing emulsified liquid to the aqueous mother medium.
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公开(公告)号：US20230098242A1
公开(公告)日：2023-03-30
申请号：US17665010
申请日：2022-02-04
发明人： Koji FUNABA , Masashi IKEDA , Yuka ISHIHARA
IPC分类号： G03G9/08
摘要： A toner for developing an electrostatic charge image includes toner particles having an average circularity Cc of 0.80 or more and less than 0.98, and an external additive containing monodisperse silica particles and titanate compound particles, in which a ratio A/B of a coverage A (%) of the monodisperse silica particles on protruding portions of toner particle surfaces to a coverage B (%) of the monodisperse silica particles in recessed portions of the toner particle surfaces is 1.05 or more.
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公开(公告)号：US20230097294A1
公开(公告)日：2023-03-30
申请号：US17476933
申请日：2021-09-16
申请人： Xerox Corporation
发明人： Richard Philip Nelson Veregin , Kimberly D. Nosella , Raysa Rodriguez Diaz , Melanie Lynn Davis , Cuong Vong
摘要： Disclosed herein is a toner composition, developer and additive for a toner composition. The toner composition includes toner particles comprising at least one resin, an optional colorant, an optional wax, and a polymeric toner additive on at least a portion of an external surface of the toner particles. The polymeric toner additive includes a polymeric resin comprising a cross-linked fluorinated acrylic monomer, a cross-linkable monomer containing two or more vinyl groups at 8 wt% to 40 wt% of the polymeric resin, and optionally a charge control agent comprising nitrogen containing group at 0.1 wt% to 1.5 wt% of the polymeric resin.
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公开(公告)号：US20230091337A1
公开(公告)日：2023-03-23
申请号：US17801083
申请日：2021-02-26
申请人： ZEON CORPORATION
发明人： Takeru Chiba
摘要： A toner set and an image forming method, both of which can print a full-color image that is superior in gradation and color reproducibility of an image including a higher-order color and superior in continuous printing durability. When one color toner selected from the group consisting of the color toners included in the toner set is defined as a first toner and other color toners are defined as second toners, an internal friction angle θ1 (°) of the first toner and an internal friction angle θ2 (°) of each of the second toners satisfy relationships represented by the following formulae (1) and (2), and a first image developed with the first toner and second images developed with the second toners are transferred in this order on a recording medium or a transfer medium to form an image including a higher-order color: θ1
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公开(公告)号：US20230091296A1
公开(公告)日：2023-03-23
申请号：US17586796
申请日：2022-01-28
摘要： A white toner includes a toner particle that contains a binder resin containing a hybrid resin in which an amorphous resin unit and a crystalline polyester resin unit are chemically bonded to each other, surface-treated titanium oxide, and a release agent, in which a proportion of Al atoms in a surface of the surface-treated titanium oxide is 3 atomic % or greater and 20 atomic % or less, and a proportion of Ti atoms in the surface is 5 atomic % or greater and 15 atomic % or less.
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公开(公告)号：US20230080900A1
公开(公告)日：2023-03-16
申请号：US18053846
申请日：2022-11-09
发明人： Kenta Kamikura , Takashi Kenmoku , Noritaka Toyoizumi , Akane Masumoto , Yuzo Seino , Yu Yoshida
摘要： A toner comprising a toner particle, wherein the toner particle includes a toner base particle containing a binder resin and includes a protruded portion on a surface of the toner base particle; the protruded portion comprises an organosilicon polymer and a polyhydric acid metal salt; and the polyhydric acid metal salt is present on a surface of the protruded portion.
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