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1.发明授权公开(公告)号：US06864031B2
公开(公告)日：2005-03-08
申请号：US10752463
申请日：2004-01-05
申请人： Toshihisa Ishida , Tatsuo Imafuku , Junichi Saito , Takahiro Bito
发明人： Toshihisa Ishida , Tatsuo Imafuku , Junichi Saito , Takahiro Bito
CPC分类号： G03G9/0819 , G03G9/1075 , G03G9/1136 , G03G13/09
摘要： The present invention provides an electrophotographic developer which reduces toner contamination on the surface of a developer carrier even when a development effective range is narrowed and which is stabilized in an image quality in every environmental situation and has a long life and a low cost and an image-forming method using the same.In the present invention, used for the electrostatically charged-image holder described above having a radius of curvature of 18 mm or less in a development effective range is the electrophotographic developer which is a two-component developer comprising a toner comprising at least a binder and a colorant and a carrier which is coated with a resin and has a weight average particle diameter of 40 to 100 μm, wherein the above toner has a volume average particle diameter of 8 to 11.5 μm, and the toner particles having a diameter of 6.35 μm or less account for 20 number % or less.
摘要翻译： 本发明提供了一种电子照相显影剂，即使在显影有效范围变窄并且在每种环境情况下稳定在图像质量中并且具有长寿命和低成本以及图像的情况下，也可以减少显影剂载体表面上的调色剂污染 在本发明中，在显影有效范围内用于上述具有18mm或更小的曲率半径的静电带电图像保持器的本发明是作为双组分显影剂的电子照相显影剂，其包含 包含至少粘合剂和着色剂的调色剂和涂覆有树脂并具有40至100μm重量平均粒径的载体，其中上述调色剂的体积平均粒径为8至11.5μm，并且调色剂 直径6.35μm或更小的颗粒占20％或更少。
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公开(公告)号：US6110635A
公开(公告)日：2000-08-29
申请号：US150738
申请日：1998-09-10
申请人： Yoshinori Urata , Tatsuo Imafuku , Toshihisa Ishida , Takahiro Bito , Tadashi Nakamura , Yoshiaki Akazawa , Yasuharu Morinishi , Nobuyasu Honda
发明人： Yoshinori Urata , Tatsuo Imafuku , Toshihisa Ishida , Takahiro Bito , Tadashi Nakamura , Yoshiaki Akazawa , Yasuharu Morinishi , Nobuyasu Honda
CPC分类号： G03G9/08704 , G03G9/0825 , G03G9/08782
摘要： A binder resin as the main component of the toner has a low molecular weight polypropylene as a separating agent, encapsulated therein. Using this binder a toner with the wax having a diameter of 0.3 .mu.m or less dispersed therein is produced. The wax is included 0.5 part to 5 parts by weight for 100 parts by weight of the binder resin. This limitation of the toner prevents the setoff phenomenon during the fixing process and at the same time prevents the filming phenomenon over the photoreceptor and achieves an improved fixing performance.
摘要翻译： 作为调色剂的主要成分的粘合剂树脂具有作为分离剂的低分子量聚丙烯，被封装在其中。 使用该粘合剂制造分散有直径为0.3μm以下的蜡的调色剂。 对于100重量份的粘合剂树脂，蜡包含0.5重量份至5重量份。 调色剂的这种限制防止了定影过程中的咬合现象，并且同时防止了感光体上的成膜现象并且实现了改进的定影性能。
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公开(公告)号：US6066423A
公开(公告)日：2000-05-23
申请号：US266025
申请日：1999-03-11
CPC分类号： G03G9/08795 , G03G9/08797 , G03G9/0906
摘要： A toner for electrophotography includes a binder resin as the main component and a coloring agent, wherein the binder resin contains a low molecular weight polypropylene as a separating agent, encapsulated therein; the acid value of the binder resin is adjusted equal to 1.0 (mgKOH/g) or below; and the coloring agent has a surface which is not oxidation treated and presents a pH of 7.0 or higher. Limiting the added amount and the diameter of encapsulated and dispersed polypropylene wax provides prevention against both the setoff and filming phenomena.
摘要翻译： 用于电子照相的调色剂包括粘合剂树脂作为主要成分和着色剂，其中粘合剂树脂含有作为分离剂的低分子量聚丙烯，被包封在其中; 将粘合剂树脂的酸值调节为1.0（mgKOH / g）以下; 并且着色剂具有未经氧化处理的表面，其pH为7.0以上。 限制包封和分散的聚丙烯蜡的添加量和直径提供了防止切割和成膜现象的预防。
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公开(公告)号：US07070897B2
公开(公告)日：2006-07-04
申请号：US10282578
申请日：2002-10-29
申请人： Tatsuo Imafuku , Junichi Saito , Takahiro Bito
发明人： Tatsuo Imafuku , Junichi Saito , Takahiro Bito
IPC分类号： G03G9/113
CPC分类号： G03G9/0825 , G03G9/083 , G03G9/09708 , G03G9/1136
摘要： In the two-component developer for use in electrophotography containing a toner and a carrier, said toner contains a magnetic powder as an external additive, said carrier is a resin coated magnetic carrier of 6.0 to 8.0 in true specific gravity, and the coating resin is a silicone based resin containing a crosslinking agent having phenyl groups and an aminosilane coupling agent. The crossliking agent in the coating resin for the carrier has phenyl groups in a content ratio of 0.2 to 15% by number.
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5.发明申请CARRIER, TWO-COMPONENT DEVELOPER USING THE SAME, AND IMAGE-FORMING APPARATUS USING SAID DEVELOPER 有权携带者，使用它的两个组件开发者，以及使用该开发者的图像形成装置公开(公告)号：US20090226218A1
公开(公告)日：2009-09-10
申请号：US12393313
申请日：2009-02-26
申请人： Kazuki Takatsuka , Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh , Masaki Ueji
发明人： Kazuki Takatsuka , Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh , Masaki Ueji
CPC分类号： G03G9/1136 , G03G9/1137 , G03G9/1138 , G03G9/1139
摘要： The present invention provides a carrier for a two-component electrophotographic developer, comprising a core particle and a thermoset silicone resin layer coated thereon, wherein said layer comprises a charge control agent and is formed by heat-treatment at a temperature below the melting point of said charge control agent.
摘要翻译： 本发明提供了一种用于双组分电摄影显影剂的载体，其包含芯颗粒和涂覆在其上的热固性有机硅树脂层，其中所述层包含电荷控制剂，并且通过在低于 说电荷控制剂。
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6.发明申请Toner for electrostatic image development and image forming method using the same 有权用于静电图像显影的调色剂和使用它的成像方法公开(公告)号：US20060093947A1
公开(公告)日：2006-05-04
申请号：US11262885
申请日：2005-11-01
申请人： Tatsuo Imafuku , Takahiro Bito , Eiji Tenjiku , Takeshi Satoh , Takeshi Ohkawa , Akiko Tsujimoto
发明人： Tatsuo Imafuku , Takahiro Bito , Eiji Tenjiku , Takeshi Satoh , Takeshi Ohkawa , Akiko Tsujimoto
IPC分类号： G03G9/08
CPC分类号： G03G9/0819 , G03G9/081 , G03G9/0827 , G03G9/08728 , G03G9/08755 , G03G9/08782 , G03G9/08793 , G03G9/0904 , G03G9/09716 , G03G9/09725
摘要： A toner for electrostatic image development, which contains toner particles in which not more than 13 percent by number of the toner particles have a particle diameter of smaller than 4 μm, not less than 20 percent by number of the toner particles have a particle diameter of 4 μm to 6 μm, and not more than 2.0 percent by volume of the toner particles have a particle diameter of 16 μm or greater. The toner particles have a volume average diameter of 4 μm to 9 μm, and at least an external additive is added to the toner particles.
摘要翻译： 一种用于静电图像显影的调色剂，其含有不超过13％数量的调色剂颗粒具有小于4μm的调色剂颗粒，不少于20％数量的调色剂颗粒的调色剂颗粒具有 4μm至6μm，并且不超过2.0体积％的调色剂颗粒具有16μm或更大的粒径。 调色剂颗粒具有4μm至9μm的体积平均直径，并且至少将外部添加剂加入到调色剂颗粒中。
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7.发明申请Developing toner for electrostatic latent images, imaging forming method and image forming apparatus 有权显影静电潜像用调色剂，成像方法和图像形成装置公开(公告)号：US20050221214A1
公开(公告)日：2005-10-06
申请号：US11090001
申请日：2005-03-28
申请人： Hitoshi Nagahama , Tatsuo Imafuku , Takahiro Bito , Tenjiku Eiji , Takeshi Satoh , Ohkawa Takeshi
发明人： Hitoshi Nagahama , Tatsuo Imafuku , Takahiro Bito , Tenjiku Eiji , Takeshi Satoh , Ohkawa Takeshi
CPC分类号： G03G9/08704 , G03G9/081 , G03G9/08711 , G03G9/08755 , G03G9/08786 , G03G9/08795 , G03G9/08797 , G03G9/0904 , G03G9/09716 , G03G9/09725
摘要： Provided is a developing toner for electrostatic latent images capable of coping with the size reduction of an image forming apparatus and decrease of the consumption amount, not shortening the working life of a photoreceptor, less causing paper jam, background fogging, etc., excellent in various characteristics required for the toner, and capable of forming images of good picture quality. The developing toner being used when images are formed to a recording material in an image forming apparatus comprising an image forming station, a recording material feeding station, an image fixing station and a controlling station, the developing toner for electrostatic latent images containing hydrophobic fluidizing particles deposited to the surface of coloring resin particles comprising a binder resin containing a polyester resin, a polyalkylene, a polyolefin dispersant and a non-oxidized polyethylene resin, and an inorganic pigment, and having time constant τ of from 100 to 350 msec.
摘要翻译： 本发明提供一种用于静电潜像的显影调色剂，其能够应对图像形成装置的尺寸减小和消耗量的降低，而不会缩短感光体的使用寿命，较少造成卡纸，背景雾化等，优异的 调色剂所需的各种特性，并且能够形成良好图像质量的图像。 在包括图像形成站，记录材料馈送站，图像定影站和控制站的图像形成设备中，当将图像形成为记录材料时使用的显影调色剂，包含疏水性流化颗粒的静电潜像显影调色剂 沉积到包含含有聚酯树脂，聚亚烷基，聚烯烃分散剂和非氧化聚乙烯树脂的粘合剂树脂和无机颜料的着色树脂颗粒的表面，并且具有100至350毫秒的时间常数τt。
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8.发明授权Carrier, two-component developer using the same, and image-forming apparatus using said developer 有权使用其的载体，双组分显影剂和使用所述显影剂的图像形成装置公开(公告)号：US09040217B2
公开(公告)日：2015-05-26
申请号：US12393313
申请日：2009-02-26
申请人： Kazuki Takatsuka , Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh , Masaki Ueji
发明人： Kazuki Takatsuka , Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh , Masaki Ueji
CPC分类号： G03G9/1136 , G03G9/1137 , G03G9/1138 , G03G9/1139
摘要： The present invention provides a carrier for a two-component electrophotographic developer, comprising a core particle and a thermoset silicone resin layer coated thereon, wherein said layer comprises a charge control agent and is formed by heat-treatment at a temperature below the melting point of said charge control agent.
摘要翻译： 本发明提供了一种用于双组分电摄影显影剂的载体，其包含芯颗粒和涂覆在其上的热固性有机硅树脂层，其中所述层包含电荷控制剂，并且通过在低于 说电荷控制剂。
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公开(公告)号：US08043781B2
公开(公告)日：2011-10-25
申请号：US12184680
申请日：2008-08-01
申请人： Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh
发明人： Tatsuo Imafuku , Takahiro Bito , Takeshi Satoh
IPC分类号： G03G9/00
CPC分类号： G03G9/0821 , G03G9/0819 , G03G9/09708 , G03G9/1136
摘要： A toner comprising a small-particle diameter external additive having a number average particle diameter of 7 to 20 nm, a large-particle diameter external additive having a number average particle diameter of 40 to 80 nm and a toner particle having a volume average particle diameter of 4 to 7 μm, wherein the large-particle diameter external additive is stuck to the surface of the toner particles in a semi-embedded state and has a rate of liberation of 0.1% by weight or less from the surface of the toner particle.
摘要翻译： 一种调色剂，其包含数均粒径为7〜20nm的小粒径外用添加剂，数均粒径为40〜80nm的大粒径外用添加剂和具有体积平均粒径的调色剂颗粒 为4〜7μm，其中大颗粒直径的外部添加剂以半嵌入状态粘附在调色剂颗粒的表面上，并且从调色剂颗粒的表面释放出0.1重量％以下的速率。
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10.发明授权Developing toner for electrostatic latent images, imaging forming method and image forming apparatus 有权显影静电潜像用调色剂，成像方法和图像形成装置公开(公告)号：US07514193B2
公开(公告)日：2009-04-07
申请号：US11090001
申请日：2005-03-28
申请人： Hitoshi Nagahama , Tatsuo Imafuku , Takahiro Bito , Tenjiku Eiji , Takeshi Satoh , Ohkawa Takeshi
发明人： Hitoshi Nagahama , Tatsuo Imafuku , Takahiro Bito , Tenjiku Eiji , Takeshi Satoh , Ohkawa Takeshi
IPC分类号： G03G9/087
CPC分类号： G03G9/08704 , G03G9/081 , G03G9/08711 , G03G9/08755 , G03G9/08786 , G03G9/08795 , G03G9/08797 , G03G9/0904 , G03G9/09716 , G03G9/09725
摘要： Provided is a developing toner for electrostatic latent images capable of coping with the size reduction of an image forming apparatus and decrease of the consumption amount, not shortening the working life of a photoreceptor, less causing paper jam, background fogging, etc., excellent in various characteristics required for the toner, and capable of forming images of good picture quality. The developing toner being used when images are formed to a recording material in an image forming apparatus comprising an image forming station, a recording material feeding station, an image fixing station and a controlling station, the developing toner for electrostatic latent images containing hydrophobic fluidizing particles deposited to the surface of coloring resin particles comprising a binder resin containing a polyester resin, a polyalkylene, a polyolefin dispersant and a non-oxidized polyethylene resin, and an inorganic pigment, and having time constant τ of from 100 to 350 msec.
摘要翻译： 本发明提供一种用于静电潜像的显影调色剂，其能够应对图像形成装置的尺寸减小和消耗量的降低，而不会缩短感光体的使用寿命，较少造成卡纸，背景雾化等，优异的 调色剂所需的各种特性，并且能够形成良好图像质量的图像。 在包括图像形成站，记录材料馈送站，图像定影站和控制站的图像形成设备中，当将图像形成为记录材料时使用的显影调色剂，包含疏水性流化颗粒的静电潜像显影调色剂 沉积到包含含有聚酯树脂，聚亚烷基，聚烯烃分散剂和非氧化聚乙烯树脂的粘合剂树脂和无机颜料的着色树脂颗粒的表面，并且具有100至350毫秒的时间常数τt。
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