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。

公开(公告)号：US5981129A

公开(公告)日：1999-11-09

申请号：US25113

申请日：1998-02-17

申请人： Yoshiaki Akazawa ,  Toshihiko Murakami ,  Tatuo Imafuku ,  Takeaki Ohuchi ,  Yasuharu Morinishi ,  Satoshi Ogawa ,  Tadashi Nakamura ,  Hitoshi Nagahama ,  Toshihisa Ishida

发明人： Yoshiaki Akazawa ,  Toshihiko Murakami ,  Tatuo Imafuku ,  Takeaki Ohuchi ,  Yasuharu Morinishi ,  Satoshi Ogawa ,  Tadashi Nakamura ,  Hitoshi Nagahama ,  Toshihisa Ishida

IPC分类号： G03G9/08 ,  G03G9/093

CPC分类号： G03G9/081 ,  G03G9/0821 ,  G03G9/0825 ,  G03G9/0827 ,  G03G9/08711 ,  G03G9/093 ,  G03G9/09307 ,  G03G9/09321 ,  G03G9/0935 ,  G03G9/09364 ,  G03G9/09392

摘要： An electrophotographic toner is made up of toner particles composed of irregularly-shaped core particles made chiefly of binder resin, and surface-modifying fine particles which are first dispersed over and attached to the surface of the core particles, and then affixed or formed into a film thereon. The BET specific surface area, based on N.sub.2 adsorption, of the toner particles is less than 0.64 times the BET specific surface area of the core particles and surface-modifying fine particles combined together. Further, this value is 1.07 times the BET specific surface area of hypothetical toner particles which are perfect spheres. Consequently, the toner is not prone to problems such as filming, toner scattering, and fogging which are caused by peeling, separation, etc. of the surface-modifying fine particles, nor to poor cleaning due to spherical toner particles. Further, since the toner is manufactured with a quantitative grasp of the state of modification of the surface of the core particles by the surface-modifying fine particles, it is a toner in a stable state.

摘要翻译： 电子照相调色剂由主要由粘合剂树脂制成的不规则形状的核心颗粒和首先分散在核颗粒表面上并附着在核颗粒表面上的表面改性微粒组成的调色剂颗粒组成，然后固定或形成为 膜上。 调色剂颗粒的基于N2吸附的BET比表面积小于核心颗粒的BET比表面积和结合在一起的表面改性微粒的0.64倍。 此外，该值是完美球体的假想调色剂颗粒的BET比表面积的1.07倍。 因此，调色剂不容易出现由表面改性微粒的剥离，分离等引起的成膜，调色剂飞散和起雾等问题，也不会由于球形调色剂颗粒而导致不良清洁。 此外，由于调色剂通过表面改性细颗粒对芯颗粒的表面的修饰状态的定量掌握来制造，所以它是调色剂处于稳定状态。

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

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/00

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。

公开(公告)号：US5976751A

公开(公告)日：1999-11-02

申请号：US57049

申请日：1998-04-08

申请人： Yasuharu Morinishi ,  Tadashi Nakamura ,  Hitoshi Nagahama ,  Satoshi Ogawa ,  Toshihisa Ishida ,  Takeaki Ohuchi

发明人： Yasuharu Morinishi ,  Tadashi Nakamura ,  Hitoshi Nagahama ,  Satoshi Ogawa ,  Toshihisa Ishida ,  Takeaki Ohuchi

IPC分类号： G03G9/08 ,  G03G9/097 ,  G03G9/10

CPC分类号： G03G9/10 ,  G03G9/08 ,  G03G9/097 ,  G03G9/09708

摘要： The present invention provides electrophotographic printing-use toner capable of producing a quality image, without depending on excessive addition of a fluidizing agent, even after maintained at high temperature which causes toner to aggregate. The electrophotographic printing-use toner constituting two-component developer with magnetic powder carrier, made of a toner mother particle including binding agent synthetic resin and a coloring agent, whose surface is added with a fluidizing agent is manufactured so that a ratio of .DELTA.Q.sub.h /.DELTA.Q.sub.s is not less than 0.37, more preferably not less than 0.45, where .DELTA.Q.sub.s is a charging rate of the toner mother particle, at a start of mixing with respect to the magnetic powder carrier, maintained at normal temperature, and .DELTA.Q.sub.h is a charging rate of the toner mother particle, at the start of mixing, maintained under a condition of temperature and time which causes the electrophotographic printing-use toner to aggregate.

摘要翻译： 本发明提供了即使在保持在高温下也能够产生质量图像的电子照相印刷用调色剂，而不依赖于过量添加流化剂，这导致调色剂聚集。 用表面添加有流化剂的由粘合剂合成树脂和着色剂构成的调色剂母粒构成的由磁性粉末载体构成的双组分显影剂的电子照相印刷用调色剂被制造成使得DELTA Qh / DELTA Qs不小于0.37，更优选不小于0.45，其中DELTA Qs是调色剂母粒的充电速率，在相对于磁性粉末载体的混合开始时保持在常温，DELTA Qh为 在混合开始时调色剂母粒的充电速率在使得电子照相印刷用调色剂聚集的温度和时间的条件下保持。

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

IPC分类号： G03G9/08 ,  B02C19/06 ,  B29B13/10 ,  G03G9/087

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 。

公开(公告)号：US6103439A

公开(公告)日：2000-08-15

申请号：US060500

申请日：1998-04-15

申请人： Satoshi Ogawa ,  Hitoshi Nagahama ,  Yasuharu Morinishi ,  Tatsuo Imafuku ,  Takeaki Ohuchi ,  Toshihisa Ishida ,  Tadashi Nakamura

发明人： Satoshi Ogawa ,  Hitoshi Nagahama ,  Yasuharu Morinishi ,  Tatsuo Imafuku ,  Takeaki Ohuchi ,  Toshihisa Ishida ,  Tadashi Nakamura

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

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/0825

摘要： In toner 1 containing a binder resin 2, wax particles 3 and a coloring agent, the wax particles 3 are designed so that the ratio of major axis/minor axis is set in the range of 1.4 to 4.0 and so that the major axis L is not more than 6.0 .mu.m. Moreover, the melt index of the binder resin ranges from 5.0 to 11.0, and the dielectric loss tangent (tan .delta.) is not more than 5.0. This arrangement prevents the wax particles 3 inside the toner 1 or at the toner 1 surface layer from exposing to or sticking out of the toner 1 surface, thereby making it possible to provide a superior offset-reducing property during the fixing process and electrophotographing toner that can reduce wax contamination on the surface of the toner-bearing body.

摘要翻译： 在含有粘合剂树脂2，蜡颗粒3和着色剂的调色剂1中，蜡颗粒3被设计成使得长轴/短轴的比率设定在1.4至4.0的范围内，并且使得长轴L为 不超过6.0亩。 此外，粘合剂树脂的熔融指数为5.0〜11.0，介电损耗角正切（tanδ）为5.0以下。 这种布置防止调色剂1内或调色剂1表面层上的蜡颗粒3暴露于或从调色剂1表面露出，从而使得可以在定影过程中提供优异的抵消减小性能和电子照相调色剂， 可以减少调色剂承载体的表面上的蜡污染。

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

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

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。

公开(公告)号：US5846683A

公开(公告)日：1998-12-08

申请号：US816391

申请日：1997-03-13

申请人： Toshihiko Murakami ,  Tadashi Nakamura ,  Junichi Saito ,  Yasuharu Morinishi ,  Takeaki Ouchi ,  Satoshi Ogawa ,  Yoshiaki Akazawa

发明人： Toshihiko Murakami ,  Tadashi Nakamura ,  Junichi Saito ,  Yasuharu Morinishi ,  Takeaki Ouchi ,  Satoshi Ogawa ,  Yoshiaki Akazawa

IPC分类号： G03G9/08 ,  G03G9/087

CPC分类号： G03G9/08797 ,  G03G9/081 ,  G03G9/08711

摘要： The extra-fine toner arising in the toner producing process, is returned to the mixing step where it is mixed again with the binder resin and the coloring agent, and the compound is sent out to the kneading step. In this procedure, the particle size of the binder resin is set in accordance with the particle size and blending amount of the extra-fine toner, the kind of the binder resin, etc. By using the binder resin having the thus determined particle size, the amount of the binder to be fed into the mixer or the amount of the compound ejected from the mixer are maintained uniform. Further, when the extra-fine toner is mixed with the starting materials, the blending ratio of the extra-fine toner to the starting material is set between 5 wt. % and 10 wt. %, and the blending ratios of the charge control agent and the coloring agent are set equal to those of the normal process where no recycled toner is added.

摘要翻译： 在调色剂生产过程中产生的超细调色剂返回到混合步骤中，再次与粘合剂树脂和着色剂混合，并将化合物送出到捏合步骤。 在该方法中，粘合剂树脂的粒径根据超细调色剂的粒度和配合量，粘合剂树脂的种类等进行设定。通过使用具有如此确定的粒径的粘合剂树脂， 进料到混合器中的粘合剂的量或从混合器喷出的化合物的量保持均匀。 此外，当超细调色剂与原料混合时，超细调色剂与起始原料的混合比设定在5重量％ ％和10wt。 ％，并且电荷控制剂和着色剂的混合比设定为不加入再循环调色剂的常规方法的混合比。

公开(公告)号：US5565294A

公开(公告)日：1996-10-15

申请号：US561885

申请日：1995-11-22

申请人： Tadayuki Sawai ,  Tadashi Nakamura ,  Toshihiko Murakami ,  Yasuharu Morinishi ,  Katsuaki Sumida ,  Toshihisa Ishida

发明人： Tadayuki Sawai ,  Tadashi Nakamura ,  Toshihiko Murakami ,  Yasuharu Morinishi ,  Katsuaki Sumida ,  Toshihisa Ishida

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

CPC分类号： G03G9/08704

摘要： The electrostatic charge image-developing toner contains a colorant, a binder resin, and polyethylene having a melt viscosity of 22000 to 26800 mPa.multidot.s at 140.degree. C. This electrostatic charge image-developing toner prevents an offset phenomenon on the surface of a fixing roller, and does not adhere to and fuse on a photoreceptor drum to cause no stripy and dotwise stain on a reproduced image, that is, preventing a so-called filming phenomenon. The toner also prevents an offset phenomenon on the photoreceptor drum.

摘要翻译： 静电荷图像显影调色剂含有着色剂，粘合剂树脂和在140℃熔融粘度为22000至26800mPax的聚乙烯。该静电荷图像显影调色剂防止定影辊表面上的偏移现象， 并且不粘附并熔化在感光鼓上，在再现图像上不引起带状和点状污点，即防止所谓的成像现象。 调色剂还防止感光鼓上的偏移现象。

公开(公告)号：US06214511B1

公开(公告)日：2001-04-10

申请号：US09574428

申请日：2000-05-19

申请人： Yoshiaki Akazawa ,  Yuichiro Takesue ,  Takeshi Kato ,  Yasuharu Morinishi ,  Junichi Saito

发明人： Yoshiaki Akazawa ,  Yuichiro Takesue ,  Takeshi Kato ,  Yasuharu Morinishi ,  Junichi Saito

IPC分类号： G03G908

CPC分类号： G03G9/09392 ,  G03G9/09385 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725

摘要： A toner, wherein at least a part of inorganic fine particles is fixed on the surface of core particles made of a binder resin containing a colorant, by applying heat in a hot air flow, is designed so as to satisfy the following expression: 2.0×[6/(&rgr;D)]≧S≧1.1×[6/(&rgr;D)]  (1) where S: toner BET specific surface area, &rgr;: toner specific gravity, and D: toner volume average particle size. Thus, it becomes possible to manufacture a toner that is superior in various properties in a stable manner.

摘要翻译： 一种调色剂，其中至少一部分无机细颗粒通过在热空气流中加热而固定在由含有着色剂的粘合剂树脂制成的芯颗粒的表面上，以满足以下表达式：其中S ：调色剂BET比表面积，rho：调色剂比重，和D：调色剂体积平均粒径。 因此，可以以稳定的方式制造各种性能优异的调色剂。