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公开(公告)号：US20230251588A1
公开(公告)日：2023-08-10
申请号：US18101119
申请日：2023-01-25
申请人： Ayaka MORI , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Masayuki ISHII
发明人： Ayaka MORI , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Masayuki ISHII
CPC分类号： G03G9/08755 , G03G9/08706 , G03G9/09733
摘要： A toner includes: a crystalline polyester resin; and a partially hydrogenated petroleum resin. A hydrogenation rate of the partially hydrogenated petroleum resin is from 30% through 70%. An amount of the partially hydrogenated petroleum resin relative to the toner is from 1% by mass through 15% by mass.
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2.发明公开公开(公告)号：US20230205107A1
公开(公告)日：2023-06-29
申请号：US18086687
申请日：2022-12-22
CPC分类号： G03G9/09733 , G03G9/0821 , G03G15/0865
摘要： A toner includes a release agent. The release agent includes a hydrocarbon compound having 2 or more and 16 or less carbon atoms. A content of the hydrocarbon compound having 2 or more and 16 or less carbon atoms, in the release agent, is 1000 ppm or more in terms of toluene, as determined by gas chromatography mass spectrometry. The hydrocarbon compound having 2 or more and 16 or less carbon atoms includes a hydrocarbon compound having a retention time of 7 minutes or more and less than 8 minutes determined by the gas chromatography mass spectrometry.
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3.发明公开公开(公告)号：US20230205105A1
公开(公告)日：2023-06-29
申请号：US18081701
申请日：2022-12-15
申请人： Yoshitaka YAMAUCHI , Kohtaroh OGINO , Masayuki ISHII , Ayaka MORI
发明人： Yoshitaka YAMAUCHI , Kohtaroh OGINO , Masayuki ISHII , Ayaka MORI
CPC分类号： G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G15/0896
摘要： A toner including a non-crystalline polyester resin, a crystalline polyester resin, a hydrocarbon wax, and an aromatic petroleum resin is provided. A mass ratio of the aromatic petroleum resin to the hydrocarbon wax is 1.0 or more. The non-crystalline polyester resin contains diol components, and the diol components include an alkylene oxide adduct of bisphenol A and ethylene glycol.
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4.发明公开公开(公告)号：US20240012344A1
公开(公告)日：2024-01-11
申请号：US18347457
申请日：2023-07-05
申请人： Kohtaroh OGINO , Yoshitaka YAMAUCHI , Ayaka MORI
发明人： Kohtaroh OGINO , Yoshitaka YAMAUCHI , Ayaka MORI
CPC分类号： G03G9/08755 , G03G9/08708 , G03G9/08782 , G03G15/08
摘要： A toner contains an amorphous polyester resin with an SP value of from 11.0 to 11.5 (cal/cm3)1/2, a styrene resin with an SP value of from 9.5 to 10.5 (cal/cm3)1/2, and a hydrocarbon wax, wherein the molecular weight distribution of the toner soluble in tetrahydrofuran has the main peak between 3,500 to 5,500 as measured by gel permeation chromatography.
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公开(公告)号：US20210072656A1
公开(公告)日：2021-03-11
申请号：US16959478
申请日：2018-12-26
申请人： Akihiro KANEKO , Kazumi SUZUKI , Hisashi NAKAJIMA , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Teruyuki SUZUKI , Namie SUZUKI
发明人： Akihiro KANEKO , Kazumi SUZUKI , Hisashi NAKAJIMA , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Teruyuki SUZUKI , Namie SUZUKI
摘要： Provided is a toner including toner particles, each toner particle includes: a base particle including a binder resin; and external additive particles, wherein the external additive particles include particles each having an equivalent circle diameter of 10 nm or greater, a volume average particle diameter of the particles each having an equivalent circle diameter of 10 nm or greater is 80 nm or greater but 140 nm or less, and a ratio (circumscribed circle area/particle area) of a circumscribed circle area of the particle having an equivalent circle diameter of 10 nm or greater to a particle area of the particle having an equivalent circle diameter of 10 nm or greater is 1.60 or greater but 2.60 or less.
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公开(公告)号：US20190278191A1
公开(公告)日：2019-09-12
申请号：US16293691
申请日：2019-03-06
申请人： Namie SUZUKI , Kazumi SUZUKI , Hisashi NAKAJIMA , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Akihiro KANEKO
发明人： Namie SUZUKI , Kazumi SUZUKI , Hisashi NAKAJIMA , Yoshitaka YAMAUCHI , Kohtaroh OGINO , Akihiro KANEKO
摘要： A toner is provided. The toner comprises mother particles and an external additive covering the mother particles. The mother particles comprise a binder resin, and the external additive comprises inorganic particles. The inorganic particles comprise small-size inorganic particles having an equivalent circle diameter of from 30 to 70 nm and large-size inorganic particles having an equivalent circle diameter of from 150 to 200 nm and a circularity of 0.85 or more. The large-size inorganic particles are 20 to 70 in number per 100 μm2 image area of the toner observed with a field-emission scanning electron microscope.
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7.发明申请公开(公告)号：US20200272067A1
公开(公告)日：2020-08-27
申请号：US16778268
申请日：2020-01-31
摘要： A toner is provided which includes: a toner base particle including a binder resin; and an external additive including inorganic particles. A particle size distribution of primary particles of the inorganic particles has a plurality of peaks in the range of from 5 nm through 50 nm. The particle size distribution of the primary particles satisfies all of expressions (1) to (3) below: n1d>n2d (1); 10
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公开(公告)号：US20170212442A1
公开(公告)日：2017-07-27
申请号：US15327700
申请日：2015-07-17
申请人： Kohtaroh OGINO , Tohru MORIYA , Tomomi SUZUKI
发明人： Kohtaroh OGINO , Tohru MORIYA , Tomomi SUZUKI
CPC分类号： G03G9/09725 , G03G9/081 , G03G9/08711 , G03G9/08755 , G03G9/08795 , G03G9/08797 , G03G9/0902 , G03G9/0904 , G03G9/0906 , G03G9/09708 , G03G15/08
摘要： A toner, containing: a binder resin; and kaolinite, wherein the toner has a molecular weight distribution having a main peak in a range of 1,000 to 10,000, and a half value width of the main peak is 8,000 to 30,000, where the molecular weight distribution is obtained by gel permeation chromatography (GPC) of THF soluble matter of the toner, and wherein the toner contains the kaolinite in an amount of 5% by mass to 35% by mass.
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公开(公告)号：US20180329326A1
公开(公告)日：2018-11-15
申请号：US15536531
申请日：2015-11-26
CPC分类号： G03G9/08797 , G03G9/081 , G03G9/0821 , G03G9/08755 , G03G9/08782 , G03G9/08795 , G03G15/08
摘要： Provided is a toner including at least a binder resin, and having peak ratio W/R of from 0.20 to 0.70 when measured with FT-IR according to ATR method, W/R being a ratio of height W of maximum spectral peak attributed to bisphenol A skeleton of the toner and observed at from 1,480 cm−1 to 1,520 cm−1 to height R of maximum spectral peak attributed to carbonyl group of the toner and observed at from 1,700 cm−1 to 1,750 cm−1, wherein molecular weight distribution of the toner obtained by GPC of THF-soluble component of the toner has main peak in a range of from 1,000 to 10,000, half value width of the molecular weight distribution is a molecular weight of 20,000 or less, and content of a THF-insoluble component in the toner is from 5% by mass to 40% by mass.
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