公开(公告)号：US20200285168A1

公开(公告)日：2020-09-10

申请号：US16802336

申请日：2020-02-26

申请人： Masayuki ISHII ,  Shinya Hanatani

发明人： Masayuki ISHII ,  Shinya Hanatani

IPC分类号： G03G9/093 ,  G03G9/08 ,  G03G15/08 ,  G03G21/18

摘要： Provided is a toner including inorganic particles, wherein the inorganic particles include silica and at least one selected from the group consisting of boehmite and pseudoboehmite.

公开(公告)号：US20140134527A1

公开(公告)日：2014-05-15

申请号：US14059603

申请日：2013-10-22

申请人： Masayuki ISHII

发明人： Masayuki ISHII

IPC分类号： G03G9/00 ,  G03G15/08

CPC分类号： G03G9/08755 ,  G03G9/09733

摘要： An external additive for toner that contains a resin particle and two or more kinds of particulates having different compositions present on the resin particle.

摘要翻译： 在树脂颗粒上含有树脂颗粒和两种或更多种具有不同组成的颗粒的调色剂外用添加剂。

公开(公告)号：US20070218387A1

公开(公告)日：2007-09-20

申请号：US11687328

申请日：2007-03-16

申请人： Masayuki ISHII ,  Tsuneyasu Nagatomo

发明人： Masayuki ISHII ,  Tsuneyasu Nagatomo

IPC分类号： G03G9/08

CPC分类号： G03G9/09725 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09733

摘要： A toner which combines excellent cleaning ability, image quality and durability, as well as a developer and an image forming method using the toner are provided. A toner comprising a toner base particle which comprises at least a binding resin and a colorant, and an external additive, wherein an external additive is a non-spherical amorphous silica particle and a major axis of the silica particle is 40 nm to 180 nm. An aspect wherein the non-spherical amorphous silica particle has a true specific gravity of 1.8 to 2.3 and the silica particle is hydrophobilized and a hydrophobilization degree is 40 or more, and an aspect wherein the non-spherical amorphous silica particle is produced by a dry system and a mass reduction rate is 5% by mass or less when the silica particle is heated from 30° C. up to 250° C. are preferable.

摘要翻译： 提供了具有优异的清洁能力，图像质量和耐久性的调色剂以及使用调色剂的显影剂和图像形成方法。 包含至少包含粘合树脂和着色剂的调色剂基础颗粒和外部添加剂的调色剂，其中外部添加剂是非球形无定形二氧化硅颗粒，并且二氧化硅颗粒的长轴为40nm至180nm。 其中，非球形无定形二氧化硅粒子的真比重为1.8〜2.3，二氧化硅粒子疏水化，疏水化度为40以上，其中非球状无定形二氧化硅粒子通过干燥 系统，并且当将二氧化硅颗粒从30℃加热至250℃时，质量减少率为5质量％以下。

公开(公告)号：US20240231252A1

公开(公告)日：2024-07-11

申请号：US18402756

申请日：2024-01-03

申请人： Akihiro KANEKO ,  Masayuki ISHII ,  Kaede MASUKO

发明人： Akihiro KANEKO ,  Masayuki ISHII ,  Kaede MASUKO

IPC分类号： G03G9/097 ,  G03G9/08 ,  G03G9/087 ,  G03G15/08 ,  G03G15/16 ,  G03G15/20

CPC分类号： G03G9/09775 ,  G03G9/0827 ,  G03G9/08711 ,  G03G9/09733 ,  G03G15/08 ,  G03G15/16 ,  G03G15/2064

摘要： A toner is provided that contains a mother toner particle containing a binder resin, a release agent, and a charge control agent and an external additive containing a hydrophobized polymethylsilsesquioxane particle, wherein the toner has a glass transition temperature of from 48 to 60 degrees C., and the temperature of 1.0 g of the toner is from 54 to 65 degrees C. when the 1.0 g of the toner is pushed in 0.1 mm by the piston of a flow tester in heating the 1.0 g of the toner from 40 degrees C. at a temperature rising speed of 3 degrees C. per minute under a load of 22.5 kgf.

公开(公告)号：US20200272067A1

公开(公告)日：2020-08-27

申请号：US16778268

申请日：2020-01-31

申请人： Kohtaroh OGINO ,  Masayuki ISHII ,  Masayuki KAKIMOTO ,  Shohichi SUGIMOTO

发明人： Kohtaroh OGINO ,  Masayuki ISHII ,  Masayuki KAKIMOTO ,  Shohichi SUGIMOTO

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

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

公开(公告)号：US20200174390A1

公开(公告)日：2020-06-04

申请号：US16492818

申请日：2018-02-15

申请人： Naoko KITADA ,  Satoshi OGAWA ,  Yoshitaka SEKIGUCHI ,  Masayuki ISHII ,  Shohta KOBAYASHI

发明人： Naoko KITADA ,  Satoshi OGAWA ,  Yoshitaka SEKIGUCHI ,  Masayuki ISHII ,  Shohta KOBAYASHI

IPC分类号： G03G9/097 ,  G03G9/087 ,  G03G9/08 ,  G03G15/08 ,  G03G21/18

摘要： Provided is a toner including a binder resin, and a charge-controlling agent, wherein a volume average particle diameter X of the toner after a stress treatment satisfies Formula (1), and an amount Y of fine toner particles having particle diameters of 3 micrometers or smaller and circularity of 0.70 or less satisfies Formula (2).

公开(公告)号：US20200019076A1

公开(公告)日：2020-01-16

申请号：US16492986

申请日：2018-02-21

申请人： Shohta KOBAYASHI ,  Satoshi OGAWA ,  Yoshitaka SEKIGUCHI ,  Masayuki ISHII ,  Naoko KITADA

发明人： Shohta KOBAYASHI ,  Satoshi OGAWA ,  Yoshitaka SEKIGUCHI ,  Masayuki ISHII ,  Naoko KITADA

IPC分类号： G03G9/08 ,  G03G9/087 ,  G03G9/097 ,  G03G21/18

摘要： Provided is a toner including a binder resin, a release agent, and a charge-controlling agent, wherein the toner includes toner particles having particle diameters of 3 micrometers or smaller, among the toner particles having particle diameters of 3 micrometers or smaller, a proportion of the toner particles having an average circularity of 0.70 or greater but 0.85 or less in all of the toner particles is 10% by number or greater but less than 20% by number and a proportion of the toner particles having an average circularity of less than 0.70 in all of the toner particles is 10% by number or less.

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

IPC分类号： G03G9/087 ,  G03G9/097

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.

公开(公告)号：US20230205107A1

公开(公告)日：2023-06-29

申请号：US18086687

申请日：2022-12-22

申请人： Kohtaroh OGINO ,  Yoshitaka YAMAUCHI ,  Masayuki ISHII ,  Ayaka MORI ,  Kazumi SUZUKI

发明人： Kohtaroh OGINO ,  Yoshitaka YAMAUCHI ,  Masayuki ISHII ,  Ayaka MORI ,  Kazumi SUZUKI

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

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.

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

IPC分类号： G03G9/087 ,  G03G15/08

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.