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1.发明授权Electrostatic-image developing toner, electrostatic image developer, and toner cartridge 有权静电图像显影调色剂，静电图像显影剂和调色剂盒公开(公告)号：US09575428B2
公开(公告)日：2017-02-21
申请号：US14926826
申请日：2015-10-29
申请人： FUJI XEROX CO., LTD.
发明人： Narumasa Sato , Kotaro Yoshihara , Daisuke Ishizuka , Asafumi Fujita , Erina Saito , Yuka Kawamoto , Noriyuki Mizutani
CPC分类号： G03G9/08755 , G03G9/0825 , G03G9/0827 , G03G9/08711 , G03G9/08795 , G03G9/08797 , G03G9/107
摘要： An electrostatic-image developing toner contains toner particles. The toner particles contain a binder resin, a release agent, and a styrene-(meth)acrylic resin. The binder resin contains a polyester resin. About 70% or more of all release agent is present within about 800 nm from surfaces of the toner particles. The styrene-(meth)acrylic resin is present in an amount of about 5 to about 25 atomic percent of the resin components in the surfaces of the toner particles as determined by X-ray photoelectron spectroscopy (XPS).
摘要翻译： 静电图像显影调色剂含有调色剂颗粒。 调色剂颗粒含有粘合剂树脂，脱模剂和苯乙烯 - （甲基）丙烯酸树脂。 粘合剂树脂含有聚酯树脂。 所有脱模剂中约70％以上存在于调色剂颗粒表面的约800nm范围内。 苯乙烯 - （甲基）丙烯酸树脂以通过X射线光电子能谱（XPS）测定的调色剂颗粒表面中的树脂组分的约5至约25原子％的量存在。
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2.发明授权Electrostatic charge image developing toner, electrostatic charge image developer, and toner cartridge 有权静电荷图像显影调色剂，静电荷图像显影剂和调色剂盒公开(公告)号：US09482972B2
公开(公告)日：2016-11-01
申请号：US14632218
申请日：2015-02-26
申请人： FUJI XEROX CO., LTD.
CPC分类号： G03G9/08711 , G03G9/0825 , G03G9/0827 , G03G9/08704 , G03G9/08706 , G03G9/08728 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/09321 , G03G9/09364 , G03G9/09716 , G03G9/09725
摘要： An electrostatic charge image developing toner includes toner particles including a binder resin that contains a copolymer formed by copolymerizing at least an aromatic vinyl monomer and an aliphatic unsaturated alkyl carboxylate ester, wherein a weight ratio of component M1 of the aromatic vinyl monomer and component M2 of the aliphatic unsaturated alkyl carboxylate ester in the copolymer satisfies the following expression (1), and a weight ratio of volatile component m1 of the aromatic vinyl monomer and volatile component m2 of the aliphatic unsaturated alkyl carboxylate ester, as measured by a headspace method, satisfies the following expression (2): 0.10≦MW2/(MW1+MW2)≦0.30 Expression (1) 0.70≦mw2/(mw1+mw2)≦0.98 Expression (2) wherein MW1 represents the weight of M1, MW2 represents the weight of M2, mw1 represents the weight of m1, and mw2 represents the weight of m2.
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公开(公告)号：US10935900B2
公开(公告)日：2021-03-02
申请号：US16533162
申请日：2019-08-06
申请人： FUJI XEROX Co., Ltd.
发明人： Daisuke Ishizuka , Narumasa Sato , Yuka Kawamoto , Erina Saito , Norimasa Ozora , Kotaro Yoshihara , Noriyuki Mizutani
摘要： 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 μm×0.5 μm 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.
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公开(公告)号：US09612542B2
公开(公告)日：2017-04-04
申请号：US14507441
申请日：2014-10-06
申请人： FUJI XEROX CO., LTD.
CPC分类号： G03G9/08755 , G03G9/0819 , G03G9/0827 , G03G9/08782 , G03G9/08795 , G03G9/08797 , G03G9/1132 , G03G9/1139
摘要： An electrostatic charge image developing toner includes a binder resin containing a polyester resin, a release agent, a colorant, and an aromatic aldehyde compound, the content of which exceeds 100 ppm and is equal to or smaller than 1200 ppm.
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公开(公告)号：US10578989B2
公开(公告)日：2020-03-03
申请号：US15892998
申请日：2018-02-09
申请人： FUJI XEROX CO., LTD.
发明人： Kotaro Yoshihara , Daisuke Ishizuka , Narumasa Sato , Yuka Kawamoto , Erina Saito , Takahisa Tatekawa , Noriyuki Mizutani
IPC分类号： G03G9/08 , G03G9/113 , G03G9/097 , G03G9/087 , G03G15/08 , G03G21/18 , G03G9/093 , G03G9/107
摘要： An electrostatic charge image developer includes: a toner that includes toner particles which contain a polyester resin and a styrene (meth)acrylic resin and form a sea-island structure which includes a sea portion containing the polyester resin and an island portion containing the styrene (meth)acrylic resin on a surface of the toner particle, and has an exposure rate of the styrene (meth)acrylic resin in a range of from about 5 atom % to about 20 atom %; and an external additive, and a carrier whose fluidity and bulk density under environment of a temperature of 25° C. and a humidity of 50% satisfy Expression: 65.0≤fluidity×bulk density≤72.5.
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6.发明授权公开(公告)号：US10520841B2
公开(公告)日：2019-12-31
申请号：US16121648
申请日：2018-09-05
申请人： FUJI XEROX CO., LTD.
发明人： Narumasa Sato , Erina Saito , Yuka Kawamoto , Noriyuki Mizutani , Kotaro Yoshihara , Daisuke Ishizuka
摘要： An electrostatic image developing toner includes a toner particle and an external additive. The toner particle contains a binder resin and a release agent that includes a hydrocarbon wax. The binder resin includes a vinyl resin and a hybrid resin in which an amorphous resin unit other than polyester resins and a crystalline polyester resin unit are chemically bound together. The toner particle has hybrid resin domains and release agent domains. An average distance Lhyb from the surface of the toner particle to the centers of the hybrid resin domains and an average distance Lwax from the surface of the toner particle to the centers of the release agent domains satisfy Lwax
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公开(公告)号：US10466605B2
公开(公告)日：2019-11-05
申请号：US15893065
申请日：2018-02-09
申请人： FUJI XEROX CO., LTD.
发明人： Narumasa Sato , Kotaro Yoshihara , Daisuke Ishizuka , Takahisa Tatekawa , Noriyuki Mizutani , Erina Saito
摘要： An electrostatic charge image developing toner includes toner particles that contain a polyester resin which includes a condensed polymer of a polyvalent carboxylic acid and a polyol which contains ethylene glycol in an amount of from about 40% by weight to about 90% by weight with respect to a total amount of the polyol, and an external additive that contains silica particles in which a product of a volume average particle diameter D50 (nm) and a BET specific surface area SA (m2/g) is from about 1.4×103 to about 5.0×103.
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公开(公告)号：US09715185B2
公开(公告)日：2017-07-25
申请号：US14934557
申请日：2015-11-06
申请人： FUJI XEROX CO., LTD.
发明人： Yuka Kawamoto , Kotaro Yoshihara , Daisuke Ishizuka , Asafumi Fujita , Narumasa Sato , Erina Saito
CPC分类号： G03G9/0819 , G03G9/0821 , G03G9/0827 , G03G9/08728 , G03G9/08755
摘要： An electrostatic-image developing toner includes a toner particle including a polyester resin and a styrene-(meth)acrylic resin, and an external additive including a poly[alkyl (meth)acrylate] particle. The amount of the poly[alkyl (meth)acrylate] particles is about 0.05 parts by mass or more and about 1.0 parts by mass or less relative to 100 parts by mass of the toner particle. The ratio D50P/D50T of the number-average diameter D50P of the poly[alkyl (meth)acrylate] particles to the number-average diameter D50T of the toner particles satisfies 0.03≦D50P/D50T≦0.15. The proportion of the styrene-(meth)acrylic resin in a resin component deposited on the surface of the toner particle is about 5 atom % or more and about 30 atom % or less as determined by X-ray photoelectron spectroscopy (XPS).
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