公开(公告)号：US20150309433A1

公开(公告)日：2015-10-29

申请号：US14682708

申请日：2015-04-09

申请人： Konica Minolta Inc.

发明人： Ikuko SAKURADA ,  Satoshi Uchino ,  Yasuko Uchino ,  Shinya Obara ,  Futoshi Kadonome ,  Hiroyuki Kozuru

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/08711 ,  G03G9/0819 ,  G03G9/08724 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/09725

摘要： An electrostatic charge image developing toner includes: toner matrix particles containing a binder resin; and an external additive added to the toner matrix particles, wherein the external additive includes joined particles each including a secondary particle including a plurality of spherical primary particles joined together, the joined particles include at least particles with a secondary particle size d2 in the range of 70 nm to 400 nm, and particles with a ratio d2/d1 in the range of 1.6 to 4.2 make up at least 50% by number of the particles with a secondary particle size d2 in the range of 70 nm to 400 nm, wherein d1 is the diameter of primary particles in the joined particle, and d2 is the secondary particle size.

摘要翻译： 静电荷图像显影调色剂包括：含有粘合剂树脂的调色剂基质颗粒; 和添加到调色剂基质颗粒中的外部添加剂，其中外部添加剂包括各自包括连接在一起的包括多个球形初级颗粒的二次颗粒的接合颗粒，所接合的颗粒至少包括二次颗粒尺寸为d2的颗粒在 70nm〜400nm的范围，d2 / d1在1.6〜4.2的范围内的粒子的二次粒径d2在70nm〜400nm的范围内至少为50％，其中d1 是连接颗粒中一次颗粒的直径，d2是二次颗粒尺寸。

公开(公告)号：US20170123334A1

公开(公告)日：2017-05-04

申请号：US15282177

申请日：2016-09-30

申请人： Konica Minolta, Inc.

发明人： Noriyuki KIMPARA ,  Satoshi UCHINO ,  Shinya OBARA ,  Futoshi KADONOME ,  Ikuko SAKURADA ,  Takuya TAKAHASHI

IPC分类号： G03G9/087 ,  G03G9/107 ,  G03G9/093 ,  G03G9/08 ,  G03G9/113

CPC分类号： G03G9/08755 ,  G03G9/0819 ,  G03G9/08788 ,  G03G9/08797 ,  G03G9/09791

摘要： An electrostatic latent image developing toner of the present invention includes toner base particles and particles containing a fatty acid metal salt. The toner base particles contain a crystalline resin containing a segment of a first resin and a segment of a second resin chemically bonded to each other and an amorphous resin containing at least the second resin. The crystalline resin is a hybrid crystalline polyester resin. The first resin is a crystalline polyester resin. The second resin is an amorphous resin. The volume-based median diameter (Da) of the toner base particles and the volume-based median diameter (Db) of the particles containing the fatty acid metal salt satisfy the relations represented by Expressions (1) and (2) below: 0.5 μm≦Db≦2.0 μm  Expression (1) 0.1 Db/Da≦0.5.  Expression (2)

公开(公告)号：US20220390873A1

公开(公告)日：2022-12-08

申请号：US17825127

申请日：2022-05-26

申请人： Konica Minolta, Inc.

发明人： Shinya OBARA ,  Koji SHIBATA ,  Ikuko SAKURADA

IPC分类号： G03G9/097 ,  G03G15/08 ,  G03G9/113

摘要： Provided is a two-component developer for electrostatic charge image development including: toner particles containing toner base particles and an external additive disposed on a surface of the toner base particles; and carrier particles having a core material particle and a shell portion disposed on a surface of the core material particle, wherein the external additive contains inorganic particles surface-modified with a surface modifier represented by the following Formula (1); and a value of an iron element content (atomic %) measured by X-ray photoelectron spectroscopy (XPS) on a surface of the carrier particles satisfies the following Expression (1), (R1)4-n—Si—(X)n  Formula (1): 4.0≤{AFe/(Ac+Ao+AFe)}×100≤15.0  Expression (1):

公开(公告)号：US20160054669A1

公开(公告)日：2016-02-25

申请号：US14807266

申请日：2015-07-23

申请人： Konica Minolta, Inc.

发明人： Anju HORI ,  Junya ONISHI ,  Yasuko UCHINO ,  Ikuko SAKURADA ,  Natsuko FUJISAKI ,  Junya UEDA ,  Takaki KAWAMURA

IPC分类号： G03G15/01 ,  G03G9/00

CPC分类号： G03G9/0827 ,  G03G9/0819 ,  G03G13/01 ,  G03G13/013 ,  G03G13/016 ,  G03G15/01 ,  G03G15/0168 ,  G03G15/0173

摘要： The invention provides an image formation method, a toner set, and a white toner, by which a masking function of an image layer formed by a white toner on a recording medium can be developed efficiently, and low temperature fixability can be improved. An image formation method for fixing an image forming layer (A) to be formed using a white toner, and an image forming layer (B) to be formed adjacent to the image forming layer (A) using a toner different from the white toner on a recording medium; wherein the following relational expressions (1) and (2) are satisfied: 1.000

摘要翻译： 本发明提供了一种图像形成方法，调色剂组合和白色调色剂，可以有效地开发由记录介质上的白色调色剂形成的图像层的掩蔽功能，并且可以提高低温定影性。 用于使用白色调色剂形成的图像形成层（A）和与图像形成层（A）相邻形成的图像形成层（B）的图像形成方法使用不同于白色调色剂的调色剂 记录介质; 其中满足以下关系式（1）和（2）：1.000

公开(公告)号：US20190243272A1

公开(公告)日：2019-08-08

申请号：US16214859

申请日：2018-12-10

申请人： Konica Minolta, Inc.

发明人： Ikuko SAKURADA ,  Satoshi Uchino ,  Shinya Obara ,  Futoshi Kadonome ,  Keiji Arai

IPC分类号： G03G9/097 ,  G03G9/08 ,  G03G9/087 ,  G03G9/113

摘要： Provided is a two-component developer for developing an electrostatic latent image containing: toner particles having toner mother particles and an external additive on a surface of the toner mother particles; and carrier particles, wherein the external additive contains alumina particles; the alumina particles are subjected to a surface modification with a hydrophobilizing agent; among the hydrophobilizing agent existing on the surface of the alumina particles after the surface modification, a ratio of the hydrophobilizing agent in a state of being liberated from the surface is 20% or less when extraction treatment is performed under a predetermined condition; the alumina particles have a number average primary particle diameter in the range of 5 to 60 nm; and the carrier particles have a resin covering layer, and the resin covering layer is formed with an alicyclic (meth)acrylate monomer

公开(公告)号：US20170090324A1

公开(公告)日：2017-03-30

申请号：US15267808

申请日：2016-09-16

申请人： Konica Minolta, Inc.

发明人： Futoshi KADONOME ,  Satoshi UCHINO ,  Shinya OBARA ,  Noriyuki KIMPARA ,  Ikuko SAKURADA ,  Takuya TAKAHASHI

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

CPC分类号： G03G9/09783 ,  G03G9/0819 ,  G03G9/08711 ,  G03G9/08755 ,  G03G9/0918 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/113 ,  G03G9/1133

摘要： Provided is an electrostatic image developing toner including a toner mother particle containing a colorant and a binder resin comprising a crystalline resin and an amorphous resin; and an external additive. The external additive includes an inorganic fine particle having a number average major axis in a range of 50 to 100 nm, an average aspect ratio in a range of 3 to 10, and a volume resistivity in a range of 1×1010 to 1×1012 Ω·cm in primary particles.

公开(公告)号：US20200292952A1

公开(公告)日：2020-09-17

申请号：US16793401

申请日：2020-02-18

申请人： Konica Minolta, Inc.

发明人： Kenshi MIYAJIMA ,  Shinya OBARA ,  Ikuko SAKURADA

IPC分类号： G03G9/087 ,  G03G9/097

摘要： A toner for electrostatic charge image development is a toner for electrostatic charge image development including toner particles containing a binder resin and an external additive, wherein the binder resin contains a crystalline polyester resin and an amorphous polyester resin, the external additive includes Al—Si composite oxide particles, and a Si element content of the Al—Si composite oxide particles is in the range of 50 to 90 mass % and a Si element ratio on surfaces of the Al—Si composite oxide particles is in the range of 3 to 35 at %.

公开(公告)号：US20200285166A1

公开(公告)日：2020-09-10

申请号：US16786069

申请日：2020-02-10

申请人： Konica Minolta, Inc.

发明人： Masaharu MATSUBARA ,  Ikuko SAKURADA ,  Tomoko MINE ,  Kazuhiko NAKAJIMA

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

摘要： A toner for developing an electrostatic image includes toner base particles containing a binder resin and an inorganic pigment, and an external additive, wherein the external additive contains alumina particles, and the number average particle size of primary particles of the alumina particles is in the range of 5 nm to 60 nm.

公开(公告)号：US20190384201A1

公开(公告)日：2019-12-19

申请号：US16399408

申请日：2019-04-30

申请人： Konica Minolta, Inc.

发明人： Futoshi KADONOME ,  Keiji ARAI ,  Junichi FURUKAWA ,  Ikuko SAKURADA

IPC分类号： G03G9/097 ,  G03G9/113 ,  G03G9/087 ,  G03G9/08

摘要： Provided is an electrostatic charge image developer containing toner particles and carrier particles, wherein the toner particles contain at least silica particles or alumina particles as an external additive; the carrier particles contain core material particles and a coating resin layer covering a surface of the core particles; the coating resin layer contains metal oxide particles; an element measured by XPS (photoelectron spectroscopy) of the carrier particle is at least Si or Al; and a content of Si or Al in the carrier particle is in the range of 1 to 6 at % with respect to the total elements constituting the carrier particles.

公开(公告)号：US20190294067A1

公开(公告)日：2019-09-26

申请号：US16295487

申请日：2019-03-07

申请人： Konica Minolta, Inc.

发明人： Kouji SUGAMA ,  Kazumi OURA ,  Masaharu MATSUBARA ,  Ikuko SAKURADA

IPC分类号： G03G9/087 ,  G03G9/113

摘要： The electrostatic charge image developing toner of the present invention is an electrostatic charge image developing toner including a toner mother particle including at least a binding resin, and an external additive attached onto a surface of the toner mother particle, wherein a median size on a volume basis of the toner mother particle is in the range from 3.0 to 5.0 μm, the binding resin contains at least an amorphous polyester resin as a main component, and a spherical silica particle (1) having a number average particle size in the range from 20 to 55 nm is included as the external additive.