公开(公告)号：US20060177755A1

公开(公告)日：2006-08-10

申请号：US11348398

申请日：2006-02-07

Applicant: Tomoko Toizumi ,  Yoshiaki Akazawa ,  Satoshi Ogawa ,  Masao Suzuki ,  Akio Matsumoto ,  Hiroshi Onda ,  Kiyoshi Toizumi ,  Toshihisa Ishida ,  Tadayuki Sawai ,  Kouji Kida ,  Tohru Nishikawa ,  Masahiko Kubo

Inventor： Tomoko Toizumi ,  Yoshiaki Akazawa ,  Satoshi Ogawa ,  Masao Suzuki ,  Akio Matsumoto ,  Hiroshi Onda ,  Kiyoshi Toizumi ,  Toshihisa Ishida ,  Tadayuki Sawai ,  Kouji Kida ,  Tohru Nishikawa ,  Masahiko Kubo

IPC: G03G9/08

CPC classification number: G03G9/08755 ,  G03G9/08782 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09716 ,  G03G9/09725

Abstract: Provided is a toner not undergoing the effect of change of temperature and humidity, with high charging stability and having good fixing property and releasability. This is an electrophotographic toner containing at least a binder resin, a colorant, a charge controller and a wax in which the binder resin comprises a polyester resin having an aromatic alcohol ingredient, the charge controller comprises an organic bentonite and the wax comprises a non-polar paraffin wax.

公开(公告)号：US06864031B2

公开(公告)日：2005-03-08

申请号：US10752463

申请日：2004-01-05

Applicant: Toshihisa Ishida ,  Tatsuo Imafuku ,  Junichi Saito ,  Takahiro Bito

Inventor： Toshihisa Ishida ,  Tatsuo Imafuku ,  Junichi Saito ,  Takahiro Bito

IPC: G03G9/08 ,  G03G9/107 ,  G03G9/113 ,  G03G13/09 ,  G03G15/14

CPC classification number: G03G9/0819 ,  G03G9/1075 ,  G03G9/1136 ,  G03G13/09

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US6066423A

公开(公告)日：2000-05-23

申请号：US266025

申请日：1999-03-11

Applicant: Tatsuo Imafuku ,  Toshihisa Ishida ,  Yoshinori Urata ,  Takahiro Bito ,  Nobuyasu Honda

Inventor： Tatsuo Imafuku ,  Toshihisa Ishida ,  Yoshinori Urata ,  Takahiro Bito ,  Nobuyasu Honda

IPC: G03G9/08 ,  G03G9/087 ,  G03G9/09

CPC classification number: G03G9/08795 ,  G03G9/08797 ,  G03G9/0906

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US6004713A

公开(公告)日：1999-12-21

申请号：US48398

申请日：1998-03-26

Applicant: Yoshinori Urata ,  Hitoshi Nagahama ,  Yasuharu Morinishi ,  Satoshi Ogawa ,  Toshihisa Ishida ,  Tadashi Nakamura ,  Takahiro Bito

Inventor： Yoshinori Urata ,  Hitoshi Nagahama ,  Yasuharu Morinishi ,  Satoshi Ogawa ,  Toshihisa Ishida ,  Tadashi Nakamura ,  Takahiro Bito

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

CPC classification number: G03G9/09741 ,  G03G9/081

Abstract: 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.

Abstract translation: 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

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

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

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

CPC classification number: G03G9/10 ,  G03G9/08 ,  G03G9/097 ,  G03G9/09708

Abstract: 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.

Abstract translation: 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：US5923920A

公开(公告)日：1999-07-13

申请号：US78271

申请日：1998-05-13

Applicant: Toshihisa Ishida ,  Masayasu Narimatsu ,  Hideji Saiko ,  Tomoko Nishino ,  Katsuaki Sumida ,  Jitsuo Masuda ,  Hiroo Naoi

Inventor： Toshihisa Ishida ,  Masayasu Narimatsu ,  Hideji Saiko ,  Tomoko Nishino ,  Katsuaki Sumida ,  Jitsuo Masuda ,  Hiroo Naoi

IPC: B41J2/52 ,  G03G15/00 ,  G03G15/02 ,  G03G15/04 ,  G03G15/08 ,  G03G15/16

CPC classification number: G03G15/0266 ,  G03G15/5041 ,  G03G2215/00042

Abstract: An image forming apparatus has an arrangement wherein a main charger includes a charger line corresponding to a region within a reference range on a surface of a photoreceptor and second charger lines corresponding to regions outside the reference range, and the first charger line within the reference range and the second charger lines outside the reference range are driven independently. The reference range is set on the surface of the photoreceptor as a width of a transported sheet which is most frequently used. In a processing control, in the case where toner patch density within the reference range becomes higher than toner patch density outside the reference range, an applied voltage with respect to the charger line within the reference range is increased relatively higher than an applied voltage with respect to the charger lines outside the reference range, thus uniformalizing the toner density with respect to the entire surface of the photoreceptor drum.

Abstract translation: 图像形成装置具有这样的配置，其中主充电器包括对应于感光体表面上的参考范围内的区域的充电器线和对应于参考范围之外的区域的第二充电器线，以及参考范围内的第一充电器线 并且独立地驱动参考范围之外的第二充电器线。 参考范围设置在感光体的表面上作为最常使用的被输送片材的宽度。 在处理控制中，在参考范围内的调色剂片密度变得高于参考范围以外的调色剂片密度的情况下，相对于在参考范围内的充电器线的施加电压相对于施加电压相对增加相对高 到充电器线路在参考范围之外，从而使调色剂密度相对于感光鼓的整个表面均匀化。

公开(公告)号：US5839018A

公开(公告)日：1998-11-17

申请号：US625997

申请日：1996-04-01

Applicant: Masato Asanuma ,  Toshiaki Ino ,  Kanshiro Okamoto ,  Hideji Saiko ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Motoyuki Itoyama ,  Hiroo Naoi ,  Mitsuru Tokuyama ,  Eisaku Hatanaka ,  Yuichiro Takesue ,  Jitsuo Masuda ,  Masayasu Narimatsu ,  Yasuo Kitabatake

Inventor： Masato Asanuma ,  Toshiaki Ino ,  Kanshiro Okamoto ,  Hideji Saiko ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Motoyuki Itoyama ,  Hiroo Naoi ,  Mitsuru Tokuyama ,  Eisaku Hatanaka ,  Yuichiro Takesue ,  Jitsuo Masuda ,  Masayasu Narimatsu ,  Yasuo Kitabatake

IPC: G03G15/00 ,  G03G15/08

CPC classification number: G03G15/0849 ,  G03G15/0853 ,  G03G15/5041 ,  G03G2215/00042

Abstract: The image forming apparatus of the invention controls the toner density by any one of the following configurations: by correcting the toner density of the developer in association with the agitation total; by controlling a process parameter so that the density of a toner patch formed on the photoreceptor corresponds to a prescribed density value and determining that developing performance of the developer is improved and canceling the toner density correction when the process parameter reaches the prescribed value; by changing the toner density reference value when the variation as to the charger output is equal to or greater than a first predetermined value and maintaining the changed toner density reference value until the variation of the charger output again becomes equal to or greater than the first predetermined value; or by prohibiting toner supply for a constant duration to prevent excessive toner supply if time from the end of the last operation of the developing unit to the start of a next operation, inclusive of the power-activation is equal to or longer the a predetermined period when the developing unit is activated to commence agitation of the developer.

Abstract translation: 本发明的图像形成装置通过以下任何一种配置来控制调色剂浓度：通过与搅拌总量相关联来校正显影剂的调色剂密度; 通过控制处理参数，使得形成在感光体上的调色剂贴片的密度对应于规定的浓度值，并且确定显影剂的显影性能得到改善，并且当处理参数达到规定值时取消调色剂浓度校正; 当相对于充电器输出的变化等于或大于第一预定值并且保持改变的调色剂浓度参考值直到充电器输出的变化再次变为等于或大于第一预定值时，通过改变调色剂浓度基准值 值; 或者如果从显影单元的最后操作结束到下一个操作开始的时间（包括功率激活）等于或更长的预定时间段，则如果从显示单元的最后操作结束到下一个操作开始的时间 当显影单元被激活以开始搅拌显影剂时。

公开(公告)号：US5826136A

公开(公告)日：1998-10-20

申请号：US821933

申请日：1997-03-21

Applicant: Hideji Saiko ,  Motoyuki Itoyama ,  Jitsuo Masuda ,  Toshihisa Ishida ,  Katsuhiro Nagayama ,  Hiroo Naoi ,  Masayasu Narimatsu ,  Tomoko Nishino

Inventor： Hideji Saiko ,  Motoyuki Itoyama ,  Jitsuo Masuda ,  Toshihisa Ishida ,  Katsuhiro Nagayama ,  Hiroo Naoi ,  Masayasu Narimatsu ,  Tomoko Nishino

IPC: G03G15/02 ,  G03G15/00 ,  G03G15/08

CPC classification number: G03G15/0849 ,  G03G15/5041 ,  G03G2215/00042

Abstract: CPU is designed to create toner patches on the surface of the photoreceptor drum and pick up the detected data of the density of the toner patches by a photosensor. CPU calculates a correcting value .DELTA.Vg of the charger output in accordance with the picked up detected data, and compared the corrected charger output Vg with (Vgs+.alpha.) and (Vgs-.alpha.). If the corrections in the same direction are repeated in a row, k.beta. (where 0

Abstract translation: CPU被设计成在感光鼓的表面上产生调色剂贴片，并通过光电传感器拾取检测到的调色剂贴片密度的数据。 CPU根据拾取的检测数据计算充电器输出的校正值DELTA Vg，并将校正的充电器输出Vg与（Vgs +α）和（Vgs-α）进行比较。 如果连续重复相同方向的校正，则将kβ（其中0

公开(公告)号：US5734948A

公开(公告)日：1998-03-31

申请号：US729050

申请日：1996-10-10

Applicant: Katsuhiro Nagayama ,  Jitsuo Masuda ,  Toshiaki Ino ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Hideji Saiko

Inventor： Katsuhiro Nagayama ,  Jitsuo Masuda ,  Toshiaki Ino ,  Toshihisa Ishida ,  Katsuaki Sumida ,  Hideji Saiko

IPC: G03G15/02 ,  G03G15/00 ,  G03G15/04 ,  G03G15/043

CPC classification number: G03G15/5041 ,  G03G15/5037

Abstract: In order to effectively perform image stabilization by control of retaining initial characteristics of a photosensitive body, if correlation between initial and aged values corresponding to bright and dark part signals of the photosensitive body is such that a variation between the initial and aged values of the dark part signal (dark .DELTA.) is greater than a variation between the initial and aged values of the bright part signal (bright .DELTA.), an image stabilizer, first, controls a charging characteristic of the aged values by changing a charging output to the photosensitive body so that the bright .DELTA. and the dark .DELTA. are equal to each other. Next, the image stabilizer makes the aged characteristics of the photosensitive body virtually identical to the initial characteristics by changing an exposure output so that the aged and initial values of the dark part signal become equal to each other.

Abstract translation: 为了通过控制保持感光体的初始特性来有效地进行图像稳定化，如果对应于感光体的明暗部分信号的初始值和老化值之间的相关性使得黑暗的初始和老化值之间的变化 部分信号（暗DELTA）大于明亮部分信号（亮DELTA）的初始值和老化值之间的变化，图像稳定器首先通过改变对感光体的充电输出来控制老化值的充电特性 使得明亮的DELTA和暗DELTA彼此相等。 接下来，图像稳定器通过改变曝光输出使得暗部信号的老化和初始值变得彼此相等，使感光体的老化特性与初始特性实质上相同。

公开(公告)号：US07011920B2

公开(公告)日：2006-03-14

申请号：US10704755

申请日：2003-11-12

Applicant: Takafumi Nagai ,  Tadayuki Sawai ,  Toshihisa Ishida ,  Kouji Kida ,  Kazuya Korematsu ,  Toru Nishikawa ,  Yoshimi Kojima

Inventor： Takafumi Nagai ,  Tadayuki Sawai ,  Toshihisa Ishida ,  Kouji Kida ,  Kazuya Korematsu ,  Toru Nishikawa ,  Yoshimi Kojima

IPC: G03G9/00

CPC classification number: G03G9/097 ,  G03G9/0821

Abstract: A non-magnetic mono-component toner of the present invention is composed of a coloring powder at least containing a binder resin, coloring agent and wax and at least one kind of external additive having a mean particle diameter of 0.04 μm or greater, wherein the relationship between the Vickers hardness of the above coloring powder and the mean particle diameter of the external additives satisfies the predetermined expression. Thereby, the present invention is effective in preventing the external additive particles from sinking into the toner surface as well as from falling off from the surface when the toner particles are stressed in the developing unit. As a result, it is possible to provide stable image quality free from degradation of toner charge performance and toner supply performance even for long-term use.

Abstract translation: 本发明的非磁性单组分调色剂由至少含有粘合剂树脂，着色剂和蜡的至少一种平均粒径为0.04μm以上的外部添加剂的着色粉末组成，其中， 上述着色粉末的维氏硬度与外部添加剂的平均粒径之间的关系满足规定的表达式。 因此，本发明在调色剂颗粒在显影单元中被应力时有效地防止外部添加剂颗粒沉入调色剂表面以及从表面脱落。 结果，即使长期使用也可以提供稳定的图像质量，而不会降低调色剂充电性能和调色剂供应性能。