公开(公告)号：US10807070B2

公开(公告)日：2020-10-20

申请号：US15988495

申请日：2018-05-24

申请人： FUJI XEROX CO., LTD.

发明人： Yasunobu Kashima ,  Hideaki Yoshikawa ,  Yasuo Kadokura ,  Takeshi Iwanaga ,  Shunsuke Nozaki ,  Sakae Takeuchi ,  Yuka Zenitani ,  Hiroyoshi Okuno

IPC分类号： B01J21/08 ,  B01J35/00 ,  B01J35/10 ,  B01J35/02

摘要： Provided is a silica titania composite aerogel particle including a base particle in which an element ratio Si/Ti of silicon to titanium is greater than 0 and equal to or lower than 6. A BET specific surface area of the silica titania composite particle is within a range of 200 m2/g to 1200 m2/g, and the silica titania composite particle has absorption at wavelengths of 450 nm and 750 nm.

公开(公告)号：US10563018B2

公开(公告)日：2020-02-18

申请号：US15908219

申请日：2018-02-28

申请人： FUJI XEROX CO., LTD.

发明人： Hideaki Yoshikawa ,  Hiroyoshi Okuno ,  Yasunobu Kashima ,  Takeshi Iwanaga ,  Sakae Takeuchi ,  Yuka Zenitani ,  Shunsuke Nozaki ,  Yasuo Kadokura

IPC分类号： C08G79/00 ,  C01G23/08 ,  C08J3/075 ,  C07F7/28 ,  C08L85/00

摘要： A titanium oxide aerogel particle has absorption at wavelengths of 450 nm and 750 nm in a visible absorption spectrum, a surface to which a metal compound containing a metal atom and a hydrocarbon group is bonded via an oxygen atom, a BET specific surface area in a range of 120 m2/g to 1,000 m2/g, and a value A is in the range of 0.03 to 0.3. The value A is calculated by formula: A={(peak intensity of C—O bond+peak intensity of C═O bond)/(peak intensity of C—C bond+peak intensity of C═C bond)}. In the formula, the peak intensity is a value determined from a C 1s XPS spectrum.

公开(公告)号：US10025210B2

公开(公告)日：2018-07-17

申请号：US15344414

申请日：2016-11-04

申请人： FUJI XEROX CO., LTD.

发明人： Takeshi Tanabe ,  Sakon Takahashi ,  Yasuaki Hashimoto ,  Masaaki Usami ,  Yuka Zenitani ,  Hiroshi Kamada ,  Moegi Iguchi ,  Yuta Saeki ,  Hiroaki Saijo

IPC分类号： G03G9/097 ,  G03G9/08 ,  G03G9/087 ,  G03G9/09 ,  G03G9/107 ,  G03G9/113 ,  G03G15/08

摘要： An electrostatic charge image developing toner includes toner particles, silica particles having an average particle diameter of 80 nm to 200 nm, lubricant particles N which has negatively chargeable property, and lubricant particles P which has positively chargeable property, wherein a content (s) of the silica particles, a content (n) of the lubricant particles N, and a content (p) of the lubricant particles P satisfy relationships of Expression (1): 0.002≤p/s≤0.2; and Expression (2): 0.02≤n/s≤0.5.

公开(公告)号：US09904197B2

公开(公告)日：2018-02-27

申请号：US15216018

申请日：2016-07-21

申请人： FUJI XEROX CO., LTD.

发明人： Yoshifumi Eri ,  Hiroyoshi Okuno ,  Satoshi Inoue ,  Yoshifumi Iida ,  Tomohito Nakajima ,  Yuka Zenitani ,  Takeshi Iwanaga ,  Sakae Takeuchi ,  Shunsuke Nozaki ,  Yasuo Kadokura ,  Yasuhisa Morooka

IPC分类号： G03G9/097 ,  G03G15/08 ,  G03G9/08 ,  G03G9/087

CPC分类号： G03G9/09725 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08724 ,  G03G9/08755 ,  G03G9/09716 ,  G03G15/08 ,  G03G15/0865 ,  G03G2215/0132

摘要： An electrostatic charge image developing toner includes toner particles containing a binder resin, and an external additive including silica particles having a compression aggregation degree is from 60% to 95% and a particle compression ratio is from 0.20 to 0.40, and resin particles containing a polymer obtained by polymerizing a (meth)acrylic acid ester monomer.

公开(公告)号：US09835963B2

公开(公告)日：2017-12-05

申请号：US15205951

申请日：2016-07-08

申请人： FUJI XEROX CO., LTD.

发明人： Satoshi Inoue ,  Hiroyoshi Okuno ,  Yoshifumi Iida ,  Tomohito Nakajima ,  Yuka Zenitani ,  Yoshifumi Eri ,  Takeshi Iwanaga ,  Sakae Takeuchi ,  Yasuhisa Morooka ,  Yasuo Kadokura ,  Shunsuke Nozaki

IPC分类号： G03G9/097 ,  G03G9/083 ,  G03G21/18 ,  G03G15/08

CPC分类号： G03G9/0837 ,  G03G9/0839 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G15/0822 ,  G03G15/0914 ,  G03G21/18

摘要： A magnetic one-component developer includes magnetic toner particles containing a binder resin and a magnetic powder, and silica particles having a compression and aggregation degree of 60% or more and 95% or less and a particle compression ratio of 0.20 or more and 0.40 or less.

公开(公告)号：US09243145B2

公开(公告)日：2016-01-26

申请号：US13934928

申请日：2013-07-03

申请人： FUJI XEROX CO., LTD.

发明人： Takeshi Iwanaga ,  Yuka Zenitani ,  Yasunobu Kashima ,  Chika Hama ,  Yoshifumi Iida

IPC分类号： B32B5/16 ,  C07F7/08 ,  C09C1/30

CPC分类号： C09C1/309 ,  C01P2004/51 ,  C01P2004/62 ,  C01P2004/64 ,  C09C1/3054 ,  C09C1/3063 ,  C09C1/3081 ,  Y10T428/2982

摘要： Silica composite particles in which a silica particle surface is sequentially surface-treated with a titanium compound in which an organic group is bonded to a titanium atom through an oxygen atom, and a hydrophobizing agent are provided, in which a titanium content in the silica composite particles measured using fluorescence X-ray is from 0.001% by weight to 10% by weight; a titanium content of a surface layer of the silica composite particles satisfies the following Formula (1); an average particle diameter of the silica composite particles is from 30 nm to 500 nm; and a particle size distribution index of the silica composite particles is from 1.1 to 1.5: 0.6

摘要翻译： 二氧化硅粒子表面依次用有机基团通过氧原子与钛原子结合的钛化合物进行表面处理的二氧化硅复合粒子和疏水化剂，其中二氧化硅复合体中的钛含量 使用荧光X射线测量的颗粒为0.001重量％至10重量％ 二氧化硅复合颗粒的表面层的钛含量满足下式（1）。 二氧化硅复合颗粒的平均粒径为30nm〜500nm; 二氧化硅复合颗粒的粒度分布指数为1.1〜1.5：0.6

公开(公告)号：US10570020B2

公开(公告)日：2020-02-25

申请号：US15001950

申请日：2016-01-20

申请人： FUJI XEROX CO., LTD.

发明人： Hiroyoshi Okuno ,  Satoshi Inoue ,  Yoshifumi Iida ,  Tomohito Nakajima ,  Yuka Zenitani ,  Yoshifumi Eri ,  Yasuo Kadokura ,  Yasuhisa Morooka ,  Shunsuke Nozaki ,  Takeshi Iwanaga ,  Sakae Takeuchi

IPC分类号： C01B33/12

摘要： A silica particle has a compression and aggregation degree of from 60% to 95% and a particle compression ratio of from 0.20 to 0.40.

公开(公告)号：US10526493B2

公开(公告)日：2020-01-07

申请号：US15659946

申请日：2017-07-26

申请人： FUJI XEROX CO., LTD.

发明人： Koji Sasaki ,  Hiroyoshi Okuno ,  Yoshifumi Iida ,  Yuka Zenitani ,  Masahiro Takayama ,  Masashi Ikeda ,  Shunsuke Nozaki

IPC分类号： B32B5/16 ,  C09C1/30

摘要： A silica composite particle includes a silica particle and a compound in which a metal atom selected from the group consisting of Ti, Al, Zr, V, and Mg bonds to an organic group through oxygen, the silica particle being surface-treated with the compound. A coverage of a surface of the silica composite particle with the metal atom is 0.01 at % or more and 30 at % or less. When a binding energy peak of O1s in an oxide of the metal atom is assumed to be MO1s, a binding energy peak of O1s in SiO2 is assumed to be SO1s, and a binding energy peak of O1s in the silica composite particle is assumed to be MSO1s, the binding energy peaks being detected by X-ray photoelectron spectroscopy, the formula 0.000452×X2−0.059117×X+SO1s

公开(公告)号：US10061216B2

公开(公告)日：2018-08-28

申请号：US15225526

申请日：2016-08-01

申请人： FUJI XEROX CO., LTD.

发明人： Yuka Zenitani ,  Hiroyoshi Okuno ,  Satoshi Inoue ,  Yoshifumi Iida ,  Tomohito Nakajima ,  Yoshifumi Eri ,  Takeshi Iwanaga ,  Sakae Takeuchi ,  Shunsuke Nozaki ,  Yasuo Kadokura ,  Yasuhisa Morooka

IPC分类号： G03G9/08 ,  G03G15/08 ,  G03G9/087 ,  G03G9/113

CPC分类号： G03G9/0819 ,  G03G9/0827 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/1131 ,  G03G9/1132 ,  G03G9/1139 ,  G03G15/08 ,  G03G15/0865 ,  G03G2215/0132

摘要： An electrostatic image developing toner contains: toner particles, first silica particles having an average equivalent circle diameter of 10 nm to 120 nm and second silica particles having a compressive agglomeration degree of 60% to 95%, a particle compression ratio of 0.20 to 0.40 and an average equivalent circle diameter being greater than the average equivalent circle diameter of the first silica particles.

公开(公告)号：US09919930B2

公开(公告)日：2018-03-20

申请号：US14921278

申请日：2015-10-23

申请人： FUJI XEROX CO., LTD.

发明人： Yuka Zenitani ,  Takeshi Iwanaga ,  Yasunobu Kashima

IPC分类号： C01B33/12 ,  C09C1/30 ,  C01B33/148 ,  C01B33/145

CPC分类号： C01B33/12 ,  C01B33/145 ,  C01B33/148 ,  C01P2004/32 ,  C01P2004/53 ,  C01P2004/62 ,  C09C1/30 ,  Y10T428/2982

摘要： Provided are methods of preparing silica particles having two maximum values in number particle size distribution, wherein in the two maximum values, a particle size ratio (a maximum value of a small-size side/a maximum value of a large-size side) between a maximum value of a large-size side and a maximum value of a small-size side is from 0.02 to 0.3, and a number ratio (a number of silica particles having a maximum value of the small-size side/number of silica particles having a maximum value of the large-size side) is from 1 to 100, and particles within a range of 10% from the large-size side of the silica particles have an average circularity of from 0.65 to 0.90 and an average shrinkage ratio of from 10 to 50.