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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：US6004713A
公开(公告)日：1999-12-21
申请号：US48398
申请日：1998-03-26
申请人： Yoshinori Urata , Hitoshi Nagahama , Yasuharu Morinishi , Satoshi Ogawa , Toshihisa Ishida , Tadashi Nakamura , Takahiro Bito
发明人： Yoshinori Urata , Hitoshi Nagahama , Yasuharu Morinishi , Satoshi Ogawa , Toshihisa Ishida , Tadashi Nakamura , Takahiro Bito
CPC分类号： G03G9/09741 , G03G9/081
摘要： A process for preparing a toner includes forming a melt-kneaded mixture by mixing a raw material mixture containing a quaternary ammonium salt compound at a temperature ranging from (M-7).degree. C. to (M+7).degree. C., where M is a melting point of the quaternary ammonium salt compound, with a kneading device having a discharge port whose temperature is set lower than a temperature at which a melt viscosity of the melt-kneaded mixture at the discharge port is not higher than 10,000 Pa.a, removing the melt-kneaded mixture from the kneading device, rolling out the melt-kneaded mixture to a thickness ranging from 1.2 mm to 3.0 mm, and cooling down the melt-kneaded mixture. With the use of the toner produced by this process, the amount of charge during copying is retained in an appropriate range irrespectively of the working atmosphere and conditions of use, thereby maintaining a good image density.
摘要翻译： 制备调色剂的方法包括通过在（M-7）℃至（M + 7）℃的温度范围内混合含有季铵盐化合物的原料混合物来形成熔融捏合的混合物，其中M 是季铵盐化合物的熔点，其捏合装置具有一个排出口，该排出口的温度设定为低于排出口处的熔融捏合混合物的熔融粘度不高于10,000Pa·a 从捏合装置中除去熔融捏合的混合物，将熔融捏合的混合物推出至1.2mm至3.0mm的厚度，并冷却熔融捏合的混合物。 通过使用通过该方法生产的调色剂，复印期间的电荷量保持在适当的范围内，而与工作气氛和使用条件无关，从而保持良好的图像浓度。
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公开(公告)号：US07455945B2
公开(公告)日：2008-11-25
申请号：US11145575
申请日：2005-06-06
申请人： Takeshi Katoh , Yoshinori Urata , Kazuya Korematu
发明人： Takeshi Katoh , Yoshinori Urata , Kazuya Korematu
IPC分类号： G03G9/113
CPC分类号： G03G9/1139 , G03G9/1075 , G03G9/1131 , G03G9/1136
摘要： A carrier excellent in durability and environmental stability and a two-component developing agent is provided. In the carrier, a core material is coated with a resin, and the coating resin is formed on the core material such that the coating resin comes to be in an amount of 5% by weight to 20% by weight on the basis of a weight of the core material, thereby enhancing durability. Further, the coating resin contains fine particles of titanium oxide, thereby enhancing environmental stability.
摘要翻译： 提供耐久性和环境稳定性优异的载体和双组分显影剂。 在载体中，芯材涂覆有树脂，涂层树脂形成在芯材上，使得涂布树脂的重量为5重量％至20重量％ 的芯材，从而提高耐久性。 此外，涂层树脂含有细小的氧化钛颗粒，从而提高了环境稳定性。
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公开(公告)号：US07601475B2
公开(公告)日：2009-10-13
申请号：US11518902
申请日：2006-09-12
申请人： Takeshi Katoh , Toshihisa Ishida , Yoshinori Urata , Kazuya Korematu , Takeshi Takayama , Mitsuhiro Hasegawa
发明人： Takeshi Katoh , Toshihisa Ishida , Yoshinori Urata , Kazuya Korematu , Takeshi Takayama , Mitsuhiro Hasegawa
IPC分类号： G03G9/00
CPC分类号： G03G9/1131 , G03G9/1075 , G03G9/1133 , G03G9/1135 , G03G9/1136 , G03G9/1139
摘要： A two-component developing agent containing a carrier which can maintain a charge-imparting property to a toner at a high level for a long period of time, does not generate flying of the carrier and can correspond to an image forming apparatus of present day having a long operation life and can form a high-quality image having high image density and sharpness, is provided. In the two-component developing agent containing a carrier in which a resin coating layer is formed on a surface of a core material, and a toner, in which an X-ray intensity of an alumina particle by a fluorescent X-ray analysis, the amount of the alumina particle to be used to the resin coating layer is adjusted such that it comes to be smaller than the X-ray intensity by the fluorescent X-ray analysis of a metal contained in a largest amount in the core material.
摘要翻译： 含有能够长时间保持高调色剂的电荷赋予性的载体的双组分显影剂不会产生载体的飞散，并且可以对应于当前的图像形成装置，具有 提供长的使用寿命并且可以形成具有高图像密度和清晰度的高质量图像。 在含有在芯材表面上形成有树脂被覆层的载体的双组分显影剂和通过荧光X射线分析的氧化铝颗粒的X射线强度的调色剂中， 调整使用于树脂被覆层的氧化铝粒子的量，使其比通过核心材料中最大量含有的金属的荧光X射线分析的X射线强度小。
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公开(公告)号：US5799881A
公开(公告)日：1998-09-01
申请号：US792452
申请日：1997-01-31
申请人： Yoshinori Urata , Takao Yoneda , Yoshiaki Akazawa , Yasuharu Morinishi , Nobuhiko Nakano , Tadashi Nakamura , Takeaki Ouchi , Satoshi Ogawa
发明人： Yoshinori Urata , Takao Yoneda , Yoshiaki Akazawa , Yasuharu Morinishi , Nobuhiko Nakano , Tadashi Nakamura , Takeaki Ouchi , Satoshi Ogawa
CPC分类号： B02C19/066
摘要： A toner producing system which can efficiently produce toner having a sharp particle size distribution by suppressing the occurrence of microscopic powders and improve energy efficiency in pulverization. The system is furnished with a second pulverizing apparatus having a second colliding plate inclined at an angle in a range between 45.degree. and 90.degree. inclusive with respect to a direction in which a raw material subject to pulverization is introduced into a second pulverizing chamber through a second nozzle, and a third pulverizing apparatus having a third colliding plate with a conical member being placed thereon, so that the raw material introduced into a third pulverizing chamber through a third nozzle collides with an inner surface thereof following the collision with the third colliding plate.
摘要翻译： 一种调色剂生产系统，其可以通过抑制微粉末的发生和提高粉碎的能量效率来有效地生产具有尖锐的粒度分布的调色剂。 该系统具有第二粉碎装置，该第二粉碎装置具有相对于经受粉碎的原料被引入第二粉碎室中的方向倾斜45度至90度之间的角度的第二碰撞板， 第二喷嘴和具有第三碰撞板的第三粉碎装置，其具有圆锥形构件，使得通过第三喷嘴引入第三粉碎室的原料在与第三碰撞板碰撞之后与其内表面碰撞 。
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公开(公告)号：US07393622B2
公开(公告)日：2008-07-01
申请号：US11142681
申请日：2005-06-02
申请人： Yoshinori Urata , Takeshi Katoh
发明人： Yoshinori Urata , Takeshi Katoh
IPC分类号： G03G9/113
CPC分类号： G03G9/1139 , G03G9/0819 , G03G9/09 , G03G9/1136
摘要： A durable two-component developing agent for electrophotography is provided that can not only suppress scattering of a toner into an inside of an apparatus but also obtain a high image density and can stably obtain a high-quality image even in use for a long period of time. The two-component developing agent for electrophotography includes a toner, and a carrier. The carrier contains a core material and a coating layer formed on a surface thereof. The coating layer is a silicone resin coating layer containing dendritic titanium oxide. Therefore, it is possible to not only suppress scattering of the toner but also obtain a sufficient image density and to form a high-quality image without reducing the image density even in use for a long period of time.
摘要翻译： 提供一种用于电子照相的耐用的双组分显影剂，其不仅可以抑制调色剂在装置内部的散射，而且可以获得高图像浓度，并且即使在长时间使用时也可以稳定地获得高质量图像 时间。 用于电子照相的双组分显影剂包括调色剂和载体。 载体包含芯材料和形成在其表面上的涂层。 涂层是含有树枝状氧化钛的有机硅树脂涂层。 因此，即使长时间使用，也可以不仅抑制调色剂的散射，而且可以获得足够的图像浓度并形成高质量的图像而不降低图像浓度。
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公开(公告)号：US20050277049A1
公开(公告)日：2005-12-15
申请号：US11145575
申请日：2005-06-06
申请人： Takeshi Katoh , Yoshinori Urata , Kazuya Korematu
发明人： Takeshi Katoh , Yoshinori Urata , Kazuya Korematu
CPC分类号： G03G9/1139 , G03G9/1075 , G03G9/1131 , G03G9/1136
摘要： A carrier excellent in durability and environmental stability and a two-component developing agent is provided. In the carrier, a core material is coated with a resin, and the coating resin is formed on the core material such that the coating resin comes to be in an amount of 5% by weight to 20% by weight on the basis of a weight of the core material, thereby enhancing durability. Further, the coating resin contains fine particles of titanium oxide, thereby enhancing environmental stability.
摘要翻译： 提供耐久性和环境稳定性优异的载体和双组分显影剂。 在载体中，芯材涂覆有树脂，涂层树脂形成在芯材上，使得涂布树脂的重量为5重量％至20重量％ 的芯材，从而提高耐久性。 此外，涂层树脂含有细小的氧化钛颗粒，从而提高了环境稳定性。
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公开(公告)号：US06177224B1
公开(公告)日：2001-01-23
申请号：US09010353
申请日：1998-01-21
申请人： Tatuo Imafuku , Tadashi Nakamura , Hitoshi Nagahama , Yoshinori Urata , Yasuharu Morinishi , Satoshi Ogawa
发明人： Tatuo Imafuku , Tadashi Nakamura , Hitoshi Nagahama , Yoshinori Urata , Yasuharu Morinishi , Satoshi Ogawa
IPC分类号： G03G908
CPC分类号： G03G9/0804 , G03G9/081 , G03G9/0815 , G03G9/097
摘要： A method of manufacturing electrophotographic toner according to the present invention includes the step of mixing at least toner particles and an additive for a predetermined mixing time to produce the toner, with the predetermined mixing time being set within a range from a first mixing time, at which chargeability of the toner (which changes according to the duration of mixing of the toner particles and the additive) shows a singular point, through a second mixing time, at which preservation of the toner (which also changes according to the duration of mixing) shows a singular point. By this method, a mixing time which maximizes the effects of the additive can be easily set. Accordingly, using a method simpler than conventional methods, a toner can be obtained which has good characteristics with regard to both chargeability and preservation.
摘要翻译： 根据本发明的制造电子照相调色剂的方法包括将预定混合时间至少混合调色剂颗粒和添加剂以产生调色剂的步骤，其中预定混合时间设定在从第一混合时间， 调色剂（其根据调色剂颗粒和添加剂的混合持续时间而变化）的充电性通过第二混合时间显示奇异点，在该第二混合时间，调色剂的保存（其也根据混合持续时间而变化） 显示了一个奇点。 通过该方法，可以容易地设定使添加剂的效果最大化的混合时间。 因此，使用比传统方法简单的方法，可以获得在充电性和保存性方面具有良好特性的调色剂。
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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：US5358819A
公开(公告)日：1994-10-25
申请号：US47649
申请日：1993-04-13
CPC分类号： G03G9/107
摘要： The object of the invention is to provide a developer for electrophotography which may present stable charging properties and image density after a prolonged period of copying operations as well as have a long life. The object can be achieved by providing a developer for electrophotography, compounded of: a toner component; and a carrier component prepared from a ferrite powder mixture in total of 100 parts, consisting of 10 to 90 parts by weight of a ferrite powder having a specific surface range of 200 to 230 cm.sup.2 /g, and 10 to 90 parts by weight of a ferrite powder having a specific surface range of more than 230 to 300 cm.sup.2 /g.
摘要翻译： 本发明的目的是提供一种用于电子照相术的显影剂，其可以在长时间的复印操作之后呈现稳定的充电性能和图像密度，并且具有长的使用寿命。 该目的可以通过提供一种用于电子照相的显影剂来实现，该显影剂复合为：调色剂组分; 和由铁氧体粉末混合物共计100份制成的载体组分，由10至90重量份的比表面积为200至230平方厘米/克的铁氧体粉末和10至90重量份的 比表面积大于230〜300cm2 / g的铁氧体粉末。
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