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公开(公告)号：US20210405549A1
公开(公告)日：2021-12-30
申请号：US17352672
申请日：2021-06-21
发明人： Kenji Ookubo , Yu Yoshida , Takashi Kenmoku , Taku Shimoda , Masashi Kawamura , Akane Masumoto , Takayuki Toyoda
摘要： A toner comprising a toner particle comprising a resin A, and an external additive A, wherein the resin A is a resin represented by formula (1) below, the resin A is present at the surface of the toner particle, the external additive A is a fine particle containing silicon, the average value of the shape factor SF-1 of the external additive A is from 105 to 120, the average value of the shape factor SF-2 of the external additive A is from 100 to 130.
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公开(公告)号：US20210397108A1
公开(公告)日：2021-12-23
申请号：US17330941
申请日：2021-05-26
申请人： Konica Minolta, Inc.
发明人： Naoki YOSHIE , Yuka SUHARA
IPC分类号： G03G9/087 , C08F212/08 , C08G63/195 , G03G15/08
摘要： Provided is an image forming method, wherein after image formation with a printing material containing a release agent, a specific active ray-curable liquid substance is applied with a roll coating method, and when a coordinate (A, V) of a point indicating a contact angle A (°) and a viscosity V (mPa·s) corresponding to the contact angle Av (°) is plotted in a coordinate system having a contact angle A (°) on a horizontal axis and a viscosity V (mPa·s) on a vertical axis, the coordinate is included in a coordinate region R (A, V) on an upper side of a contact angle-viscosity curve represented by a formula on a right side of a specific expression.
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公开(公告)号：US20210397107A1
公开(公告)日：2021-12-23
申请号：US17094362
申请日：2020-11-10
发明人： Yuichiro TAKEDA
摘要： A toner according to an embodiment includes toner base particles and an external additive. The external additive contains silica particles having a D50 of 70 to 120 nm. The joining degree of the silica particles is 80% or more. The toner base particles contain a crystalline polyester resin and an ester wax. The ester wax is a condensation polymer of three or more types of carboxylic acids and two or more types of alcohols. The proportion of a carboxylic acid, the content of which is highest, is between 70 and 95 mass %. The proportion of a carboxylic acid with a carbon number of 18 or less is 5 mass % or less. The proportion of an alcohol, the content of which is highest, is between 70 and 90 mass %. The proportion of an alcohol with a carbon number of 18 or less is 20 mass % or less.
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94.发明申请公开(公告)号：US20210397105A1
公开(公告)日：2021-12-23
申请号：US17336866
申请日：2021-06-02
申请人： RICOH COMPANY, LTD.
发明人： Hiyori FUJINO , Keisuke TADA , Shoki MATSUDA , Fumihiko CHIMOTO , Ayumi SATOH
摘要： 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 λ 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 λ; and Iave represents an average of the In.
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公开(公告)号：US20210382406A1
公开(公告)日：2021-12-09
申请号：US17336386
申请日：2021-06-02
发明人： Shohei Yamashita , Takeshi Tsujino , Junya Asaoka , Yuu Sasano , Yuhei Terui , Koki Inoue , Shota Amano
摘要： A production method of a toner having a toner particle that contains a binder resin and an external additive that is externally added to the toner particle, wherein the production method has a toner particle dispersion step of obtaining a toner particle dispersion by dispersing the toner particle and an inorganic dispersant in an aqueous medium; and an external addition step of externally adding the external additive to the toner particle through addition of the external additive to the toner particle dispersion.
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公开(公告)号：US20210364940A1
公开(公告)日：2021-11-25
申请号：US17327359
申请日：2021-05-21
发明人： Masami TSUJIHIRO
IPC分类号： G03G9/087 , G03G9/083 , C08G63/195 , C08G63/16
摘要： A magnetic toner includes toner particles. The toner particles each include a toner mother particle. The toner mother particle includes a polyester resin domain, a vinyl resin domain, and a magnetic powder. A vinyl resin constituting the vinyl resin domain includes a repeating unit having a non-ring-opened oxazoline group. An area rate of an area in which the vinyl resin domain is exposed in a surface area of the toner mother particle is at least 0.02% and no greater than 1.00%.
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公开(公告)号：US11181839B2
公开(公告)日：2021-11-23
申请号：US16864273
申请日：2020-05-01
摘要： A toner comprising a toner particle including a binder resin, wherein the toner is such that (1) when a powder dynamic viscoelasticity measurement method is used, a measurement start temperature is set to 25° C., and a ramp rate is set to 20° C./min, on a curve of a storage elastic modulus E′ (Pa) where a temperature (° C.) is plotted against an abscissa and the storage elastic modulus E′ is plotted against an ordinate, a temperature at a time when the E′ at a start of a measurement has decreased by 50% is from 60° C. to 90° C., and (2) a load at a yield point of a displacement-load curve which is determined by a nanoindentation method and where a load (mN) is plotted against an ordinate and a displacement amount (μm) is plotted against an abscissa, is 0.80 mN or more; and a method for producing thereof.
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公开(公告)号：US11175600B2
公开(公告)日：2021-11-16
申请号：US16935259
申请日：2020-07-22
发明人： Akihiko Uchiyama , Tetsuya Sano , Tomoaki Nakai , Takashi Kenmoku , Kenta Kamikura , Yuzo Seino
摘要： A toner comprising a toner particle, wherein the toner particle includes a binder resin, where a volume resistivity Ω·cm of an unfixed solid image on a recording material on which the solid image has been formed using the toner at a toner laid-on level of 0.4 mg/cm2 is denoted by Tv, and a volume resistivity Ω·cm of the solid image after fixing by applying heat and pressure to the recording material is denoted by Fv, Tv/Fv≥8 is satisfied.
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公开(公告)号：US11150570B2
公开(公告)日：2021-10-19
申请号：US15726892
申请日：2017-10-06
IPC分类号： G03G13/22 , G03G15/22 , B29C64/153 , B33Y70/00 , G03G13/08 , G03G9/087 , G03G9/097 , G03G9/08 , G03G13/16 , G03G13/20 , G03G15/24 , G03G15/16 , B29K71/00 , B29K105/00 , B29K81/00 , B29K77/00
摘要： A method for printing a three-dimensional part with an electrophotography-based additive manufacturing system having an electrophotography engine, a transfer medium, and a layer transfusion assembly includes providing a part material to the electrophotography-based additive manufacturing system, the part material compositionally comprising a charge control agent, and a thermoplastic material having a heat deflection temperature greater than about 150° C., and has a powder form. The method includes triboelectrically charging the part material to a Q/M ratio having a negative charge or a positive charge, and a magnitude ranging from about 5 micro-Coulombs/gram to about 50 micro-Coulombs/gram and developing layers of the three-dimensional part from the charged part material with the electrophotography engine. The method includes electrostatically attracting the developed layers from the electrophotography engine to the transfer medium and moving the attracted layers to the layer transfusion assembly with the transfer medium, wherein the layer transfusion assembly comprises a nip roller. The method includes transfusing the moved layers to previously-printed layers of the three-dimensional part with by moving the attracted layers about a nip of a nip roller using heat and pressure over time.
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公开(公告)号：US20210302856A1
公开(公告)日：2021-09-30
申请号：US17197102
申请日：2021-03-10
发明人： Yuujirou Nagashima , Yasuhiro Hashimoto , Koji Nishikawa , Tomoya Nagaoka , Shuntaro Watanabe , Hiroki Akiyama , Hiroki Kagawa
IPC分类号： G03G9/097 , G03G9/08 , C08F220/18 , G03G9/087 , C08G77/04
摘要： A toner is provided, which has a toner particle that contains a binder resin, and organosilicon polymer particle on a surface of the toner particle. A methanol concentration a (vol %) of the organosilicon polymer particle in a wettability test and a methanol concentration b (vol %) of the toner particle in a wettability test satisfy Expression (I) below: |a−b|≤25 (I), and an adhesion index of the organosilicon polymer particle on a polycarbonate film, calculated on the basis of Expression (II) below, is not more than 3.5: Adhesion index=area ratio c of the organosilicon polymer particle having migrated to the polycarbonate film/coverage ratio d of the organosilicon polymer particle on the surface of the toner particle ×·100 (II)
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