公开(公告)号：US08409778B2

公开(公告)日：2013-04-02

申请号：US12691430

申请日：2010-01-21

申请人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

发明人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

IPC分类号： G03G15/08

CPC分类号： G03G9/1136 ,  G03G9/107 ,  G03G2215/0607

摘要： A resin coated carrier is provided that can stably charge a toner having added thereto an external additive having a large particle size over a long period of time and can prevent blocking of a developer. The resin coated carrier satisfies the following formula (1): log(Mb/Ma)>2  (1) in which Ma is a weight average molecular weight of a silicone resin having the minimum weight average molecular weight, contained in a resin coating layer, and Mb is a weight average molecular weight of a silicone resin having the maximum weight average molecular weight, and the following formula (2) is satisfied: 0.5≦−log(A/B)≦2.5  (2) in which A is a volume resistance (Ω/cm) under electric field of 1,000 V/cm obtained by conducting a stirring test, and B is a volume resistance (Ω/cm) under electric field of 1,000 V/cm before the stirring test.

摘要翻译： 提供一种树脂涂布的载体，其可以在长时间内稳定地加入具有大粒径的外部添加剂的调色剂，并且可以防止显影剂的堵塞。 树脂涂布载体满足下式（1）：log（Mb / Ma）> 2（1）其中Ma是包含在树脂涂层中的具有最小重均分子量的有机硅树脂的重均分子量 ，Mb是具有最大重均分子量的有机硅树脂的重均分子量，满足下式（2）：0.5＆nlE; -log（A / B）＆nlE; 2.5（2）其中A 是在通过搅拌试验获得的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm），B是在搅拌试验前的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm）。

公开(公告)号：US20100183340A1

公开(公告)日：2010-07-22

申请号：US12691430

申请日：2010-01-21

申请人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

发明人： Osamu Wada ,  Tadashi Iwamatsu ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Natsuki Matsuura ,  Nobuhiro Seki ,  Masatomo Hayashi

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

CPC分类号： G03G9/1136 ,  G03G9/107 ,  G03G2215/0607

摘要： A resin coated carrier is provided that can stably charge a toner having added thereto an external additive having a large particle size over a long period of time and can prevent blocking of a developer. The resin coated carrier satisfies the following formula (1): log(Mb/Ma)>2  (1) in which Ma is a weight average molecular weight of a silicone resin having the minimum weight average molecular weight, contained in a resin coating layer, and Mb is a weight average molecular weight of a silicone resin having the maximum weight average molecular weight, and the following formula (2) is satisfied: 0.5≦−log(A/B)≦2.5  (2) in which A is a volume resistance (Ω/cm) under electric field of 1,000 V/cm obtained by conducting a stirring test, and B is a volume resistance (Ω/cm) under electric field of 1,000 V/cm before the stirring test.

摘要翻译： 提供一种树脂涂布的载体，其可以在长时间内稳定地加入具有大粒径的外部添加剂的调色剂，并且可以防止显影剂的堵塞。 树脂涂布载体满足下式（1）：log（Mb / Ma）> 2（1）其中Ma是包含在树脂涂层中的具有最小重均分子量的有机硅树脂的重均分子量 ，Mb是具有最大重均分子量的有机硅树脂的重均分子量，满足下式（2）：0.5＆nlE; -log（A / B）＆nlE; 2.5（2）其中A 是在通过搅拌试验获得的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm），B是在搅拌试验前的1000V / cm的电场下的体积电阻（＆amp; OHgr / cm）。

公开(公告)号：US20100248116A1

公开(公告)日：2010-09-30

申请号：US12730583

申请日：2010-03-24

申请人： Takanori KAMOTO ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

发明人： Takanori KAMOTO ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

IPC分类号： G03G9/10 ,  G03G9/107 ,  G03G17/00 ,  G03G15/08

CPC分类号： G03G9/1075 ,  G03G9/1131 ,  G03G9/1133

摘要： A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 μm. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.

摘要翻译： 提供了一种制造具有对载体芯材料具有小树脂量并且在载体芯材上形成均匀的树脂涂层的低密度树脂涂覆载体的方法。 树脂被覆载体具有载体芯材和在载体芯材的表面上形成的树脂被覆层。 载体芯材料具有孔隙，表观密度为1.6g / cm 3至2.0g / cm 3，剩余磁化强度为10emu / g以下。 树脂涂层通过将树脂颗粒粘附到载体芯材的表面并对树脂颗粒施加热和冲击力的干法来形成。 树脂粒子的体积平均粒径小于1μm。 将包含树脂涂布载体的双组分显影剂装入图像形成装置的显影装置中，形成图像。

公开(公告)号：US20100003614A1

公开(公告)日：2010-01-07

申请号：US12495973

申请日：2009-07-01

申请人： Osamu Wada ,  Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Hiroyuki Hirakawa ,  Yoshinori Mutoh ,  Takashi Hara ,  Hirofumi Kanda ,  Yoshio Ichii

发明人： Osamu Wada ,  Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Hiroyuki Hirakawa ,  Yoshinori Mutoh ,  Takashi Hara ,  Hirofumi Kanda ,  Yoshio Ichii

IPC分类号： G03G9/00 ,  G03G15/08

CPC分类号： G03G9/1136 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/1075 ,  G03G9/1139

摘要： The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5≦−log {(A/C)/(B/C)}≦2.5   (1) wherein A represents a volume resistance value (Q/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (Ω/cm) of the carrier core in an electric field of 1000 V/cm.

摘要翻译： 树脂涂布载体与调色剂一起使用，其中平均一次粒径为50nm以上的外部添加剂添加到调色剂颗粒中，并且在载体芯的表面上具有载体芯和树脂涂层。 在树脂涂布载体中，满足以下表达式（1）：0.5A / C）/（B / C）}其中A表示在1000的电场中树脂涂布载体的体积电阻值（Q / cm） V / cm，B表示搅拌试验前的1000V / cm的电场中的树脂被覆载体的体积电阻值（Ω/ cm），C表示体积电阻值（ 在1000V / cm的电场中的载体芯的Ω/ cm 2。

公开(公告)号：US09304420B2

公开(公告)日：2016-04-05

申请号：US12835106

申请日：2010-07-13

申请人： Nobuyuki Yoshioka ,  Takanori Kamoto ,  Osamu Wada ,  Tadashi Iwamatsu

发明人： Nobuyuki Yoshioka ,  Takanori Kamoto ,  Osamu Wada ,  Tadashi Iwamatsu

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

CPC分类号： G03G9/0825 ,  G03G9/08782 ,  G03G9/1075 ,  G03G9/1131 ,  G03G9/1136 ,  G03G2215/0607

摘要： A two-component developer is provided. The two-component developer includes a toner containing a binder resin, a colorant and a release agent, and a resin-coated carrier composed of a carrier core material and a resin coating layer formed on a surface of the carrier core material. The toner has an exposure rate of the release agent on the toner surface of 1.00% or above and 3.07% or below. The carrier core material has an apparent density of 1.86 g/cm3 or more and 2.45 g/cm3 or less. The exposure rate of the release agent of the toner and the apparent density of the carrier core material satisfy the following formula (1): y≦−1.54x+5.93  (1) wherein y represents the exposure rate of the release agent of the toner, and x represents the apparent density of the carrier core material.

摘要翻译： 提供了双组分开发。 双组分显影剂包括含有粘合剂树脂，着色剂和脱模剂的调色剂和由载体芯材和形成在载体芯材的表面上的树脂涂层构成的树脂涂布载体。 调色剂的调色剂表面的脱模剂的曝光率为1.00％以上且3.07％以下。 载体芯材的表观密度为1.86g / cm 3以上且2.45g / cm 3以下。 调色剂的脱模剂的曝光率和载体芯材的表观密度满足下式（1）：y＆nlE; -1.54x + 5.93（1）其中y表示调色剂的脱模剂的曝光率 ，x表示载体芯材的表观密度。

公开(公告)号：US08735041B2

公开(公告)日：2014-05-27

申请号：US12730583

申请日：2010-03-24

申请人： Takanori Kamoto ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

发明人： Takanori Kamoto ,  Takayuki Yamanaka ,  Osamu Wada ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka

IPC分类号： G03G9/10

CPC分类号： G03G9/1075 ,  G03G9/1131 ,  G03G9/1133

摘要： A method for producing a low density resin-coated carrier having a small resin amount to a carrier core material and having a uniform resin coating layer formed on the carrier core material is provided. A resin-coated carrier has a carrier core material and a resin coating layer formed on the surface of the carrier core material. The carrier core material has pores and an apparent density of 1.6 g/cm3 to 2.0 g/cm3 and a remanent magnetization of 10 emu/g of less. The resin coating layer is formed by a dry process of adhering resin particles to a surface of the carrier core material and applying heat and impact force to the resin particles. A volume average particle size of the resin particles is less than 1 μm. A two-component developer containing the resin-coated carrier is charged in a developing device in an image forming apparatus, and an image is formed.

摘要翻译： 提供了一种制造具有对载体芯材料具有小树脂量并且在载体芯材上形成均匀的树脂涂层的低密度树脂涂覆载体的方法。 树脂被覆载体具有载体芯材和在载体芯材的表面上形成的树脂被覆层。 载体芯材料具有孔隙，表观密度为1.6g / cm 3至2.0g / cm 3，剩余磁化强度为10emu / g以下。 树脂涂层通过将树脂颗粒粘附到载体芯材的表面并对树脂颗粒施加热和冲击力的干法来形成。 树脂粒子的体积平均粒径小于1μm。 将包含树脂涂布载体的双组分显影剂装入图像形成装置的显影装置中，形成图像。

公开(公告)号：US20100279221A1

公开(公告)日：2010-11-04

申请号：US12769121

申请日：2010-04-28

申请人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

发明人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

IPC分类号： G03G9/00 ,  G03G15/08

CPC分类号： G03G9/1137 ,  G03G9/107 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1136

摘要： A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm3. The resin coating layer contains cross-linked fine resin particles. Additionally, the resin-coated carrier is configured such that a volume average particle size of the cross-linked fine resin particles contained in the resin coating layer and an area average diameter of the surface fine pores satisfy a predetermined relational expression.

摘要翻译： 提供树脂涂层载体。 树脂涂布载体包括载体芯和形成在载体芯的表面上的树脂涂层。 载体芯由具有在其表面形成的表面细孔的多孔材料构成，表观密度为1.6〜2.0g / cm 3。 树脂涂层含有交联的细树脂颗粒。 另外，树脂被覆载体被构造成使得包含在树脂被覆层中的交联的微粒树脂颗粒的体积平均粒径和表面细孔的面积平均直径满足预定的关系式。

公开(公告)号：US08741525B2

公开(公告)日：2014-06-03

申请号：US12495973

申请日：2009-07-01

申请人： Osamu Wada ,  Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Hiroyuki Hirakawa ,  Yoshinori Mutoh ,  Takashi Hara ,  Hirofumi Kanda ,  Yoshio Ichii

发明人： Osamu Wada ,  Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Hiroyuki Hirakawa ,  Yoshinori Mutoh ,  Takashi Hara ,  Hirofumi Kanda ,  Yoshio Ichii

IPC分类号： G03G9/00

CPC分类号： G03G9/1136 ,  G03G9/08755 ,  G03G9/09716 ,  G03G9/09725 ,  G03G9/1075 ,  G03G9/1139

摘要： The resin coated carrier is used with a toner in which an external additive having an average primary particle size of 50 nm or more is added to a toner particle, and has a carrier core and a resin coating layer on the surface of the carrier core. In the resin coated carrier, the following expression (1) is satisfied: 0.5≦−log {(A/C)/(B/C)}≦2.5  (1) wherein A represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm that is obtained by conducting a stirring test, B represents a volume resistance value (Ω/cm) of the resin coated carrier in an electric field of 1000 V/cm before the stirring test, and C represents a volume resistance value (Ω/cm) of the carrier core in an electric field of 1000 V/cm.

摘要翻译： 树脂涂布载体与调色剂一起使用，其中平均一次粒径为50nm以上的外部添加剂添加到调色剂颗粒中，并且在载体芯的表面上具有载体芯和树脂涂层。 在树脂被覆载体中满足以下表达式（1）：0.5＆nlE; -log {（A / C）/（B / C）}＆nlE; 2.5（1）其中A表示体积电阻值（＆ cm），通过进行搅拌试验而得到的电场为1000V / cm的树脂被覆载体的B，表示在1000V / cm 2的电场中的树脂被覆载体的体积电阻值（＆amp; cm，并且C表示载体芯在1000V / cm的电场中的体积电阻值（＆amp; R g / cm）。

公开(公告)号：US08293446B2

公开(公告)日：2012-10-23

申请号：US12769121

申请日：2010-04-28

申请人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

发明人： Osamu Wada ,  Takanori Kamoto ,  Nobuyuki Yoshioka ,  Ayae Nagaoka ,  Tadashi Iwamatsu

IPC分类号： G03G9/10

CPC分类号： G03G9/1137 ,  G03G9/107 ,  G03G9/1131 ,  G03G9/1133 ,  G03G9/1136

摘要： A resin-coated carrier is provided. A resin-coated carrier includes a carrier core and a resin coating layer formed on a surface of the carrier core. The carrier core is composed of a porous material having surface fine pores formed on a surface thereof, and has an apparent density of 1.6 to 2.0 g/cm3. The resin coating layer contains cross-linked fine resin particles. Additionally, the resin-coated carrier is configured such that a volume average particle size of the cross-linked fine resin particles contained in the resin coating layer and an area average diameter of the surface fine pores satisfy a predetermined relational expression.

摘要翻译： 提供树脂涂层载体。 树脂涂布载体包括载体芯和形成在载体芯的表面上的树脂涂层。 载体芯由具有在其表面形成的表面细孔的多孔材料构成，表观密度为1.6〜2.0g / cm 3。 树脂涂层含有交联的细树脂颗粒。 另外，树脂被覆载体被构造成使得包含在树脂被覆层中的交联的微粒树脂颗粒的体积平均粒径和表面细孔的面积平均直径满足预定的关系式。

公开(公告)号：US08192908B2

公开(公告)日：2012-06-05

申请号：US12128148

申请日：2008-05-28

申请人： Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Yoshinori Mutoh ,  Hiroyuki Hirakawa ,  Takashi Hara

发明人： Takanori Kamoto ,  Tadashi Iwamatsu ,  Nobuyuki Yoshioka ,  Yoshinori Mutoh ,  Hiroyuki Hirakawa ,  Takashi Hara

IPC分类号： G03G9/08

CPC分类号： G03G9/1075 ,  G03G9/1131 ,  G03G9/1136

摘要： A carrier of the present invention is used in a developer including a toner which includes at least a binder resin and an organic colorant, and the carrier has a core and a coating formed on the surface of the core, the coating including (i) a charge control agent for controlling a charge whose polarity is the same as a polarity of a charge controlled by a charge control agent included in the toner, and (ii) a conductive particles. The use of the carrier of the present invention enables: prevention of decrease in the charging amount of the toner which includes at least a binder resin and an organic colorant; and formation of a stable, high-resolution, high-quality image which has very few image defects such as a photographic fog.

摘要翻译： 本发明的载体用于包括至少包含粘合剂树脂和有机着色剂的调色剂的显影剂中，并且所述载体具有在芯的表面上形成的芯和涂层，所述涂层包括（i） 用于控制极性与由调色剂中包含的电荷控制剂控制的电荷的极性相同的电荷的电荷控制剂，和（ii）导电颗粒。 使用本发明的载体能够：防止包含至少粘合剂树脂和有机着色剂的调色剂的带电量的降低; 并形成稳定，高分辨率，高质量的图像，其具有非常少的图像缺陷，例如摄影雾。