公开(公告)号：US06335139B1

公开(公告)日：2002-01-01

申请号：US09642936

申请日：2000-08-22

申请人： Hideki Gambayashi ,  Masanobu Nakamura ,  Toshiro Kogawara ,  Shinji Amaya

发明人： Hideki Gambayashi ,  Masanobu Nakamura ,  Toshiro Kogawara ,  Shinji Amaya

IPC分类号： G03G9087

CPC分类号： G03G9/08782 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08797 ,  G03G9/09741 ,  G03G9/09775

摘要： The present invention provides a toner for electrostatic image development which reconciles anti-offset properties and fixation properties and is superior in resistance to abrasion and peel of the fixed image in uses where the development and fixation are conducted at a wide range of a fixing speed, particularly high speed which exceeds 20 or 30 m/min. The toner comprises a polyester resin, a colorant, and a releasing agent, wherein the flow beginning temperature Tfb of the toner as measured by a constant load extrusion type capillary rheometer is within a range of 70-105° C. and the flow ending temperature Tend is within a range of 120-144° C.

摘要翻译： 本发明提供了一种用于静电图像显影的调色剂，其调和抗偏移性和定影性，并且在定影速度的宽范围内进行显影和定影的用途中，在耐磨性和固定图像的剥离方面优异， 特别高的速度超过20或30米/分。 调色剂包括聚酯树脂，着色剂和脱模剂，其中通过恒定负载挤出型毛细管流变仪测量的调色剂的流动开始温度Tfb在70-105℃的范围内，并且流动结束温度 Tend在120-144°C的范围内

公开(公告)号：US06238836B1

公开(公告)日：2001-05-29

申请号：US09401783

申请日：1999-09-22

申请人： Masanobu Nakamura ,  Toshiro Kogawara ,  Hideki Gambayashi ,  Norio Aoki ,  Yoshinori Shimane ,  Ryozo Sugawara ,  Kinji Shinzo

发明人： Masanobu Nakamura ,  Toshiro Kogawara ,  Hideki Gambayashi ,  Norio Aoki ,  Yoshinori Shimane ,  Ryozo Sugawara ,  Kinji Shinzo

IPC分类号： G03G9087

CPC分类号： G03G9/08753 ,  G03G9/08755

摘要： An electrostatic image developer is provided which has superior fixation properties and anti-offset properties, exhibits stable charge behavior even during continuous printing, and has superior durability and permits a high-quality image to be obtained. This electrostatic image developer is a toner composition containing colored resin particles comprising at least a binder resin, a colorant, and a charge control agent, wherein (1) an epoxy compound with a valence of 5 or more, (2) a polybasic acid compound having a valence of 2 or more selected from the group consisting of polybasic acids and/or acid anhydrides and/or lower alkyl esters thereof, and (3) a polyvalent alcohol having a valence of 2 or more, are employed as chief structural components of the binder resin, and a polyester resin is produced by reacting components (1)-(3) simultaneously, or by first reacting components (1) and (3), and subsequently reacting component (2), or by first reacting components (1) and (2), and subsequently reacting component (3).

摘要翻译： 提供静电图像显影剂，其具有优异的固着性和抗偏移性，即使在连续印刷期间也表现出稳定的电荷性能，并且具有优异的耐久性并且可以获得高质量的图像。 该静电图像显影剂是包含至少包含粘合剂树脂，着色剂和电荷控制剂的着色树脂颗粒的调色剂组合物，其中（1）价数为5以上的环氧化合物，（2）多元酸化合物 具有选自多元酸和/或酸酐和/或其低级烷基酯的化合价为2以上的化合价，和（3）2价以上的多价醇作为主要结构成分 通过使组分（1） - （3）同时反应或首先使组分（1）和（3）反应，然后使组分（2）反应，或通过首先使组分（1）反应来制备粘合剂树脂和聚酯树脂 ）和（2），随后使组分（3）反应。

公开(公告)号：US06534229B2

公开(公告)日：2003-03-18

申请号：US09780337

申请日：2001-02-12

申请人： Katsunori Ohba ,  Katsuyuki Ogura ,  Masanobu Nakamura ,  Toshiro Kogawara ,  Hideki Gambayashi

发明人： Katsunori Ohba ,  Katsuyuki Ogura ,  Masanobu Nakamura ,  Toshiro Kogawara ,  Hideki Gambayashi

IPC分类号： G03G9087

CPC分类号： G03G9/0819 ,  G03G9/0823 ,  G03G9/08755 ,  G03G9/08797

摘要： An object of the present invention is to provide a developer for electrostatic image development, which exhibits stable charge behavior during printing even when using a polyester resin and does not cause contamination of the inside of the apparatus because of less scattering of the toner, and also facilitates easy maintenance. The developer for electrostatic image development of the present invention comprises colored resin particles comprising at least a binder resin and a colorant, and a magnetic carrier, wherein a proportion of said colored resin particles having a particle diameter in a range of from 12 &mgr;m to 16 &mgr;m, inclusive, in said developer and a specific charge amount of said colored resin particles meet the following expression (1): 5.18+0.12×A

摘要翻译： 本发明的目的是提供一种用于静电图像显影的显影剂，其即使在使用聚酯树脂时也在印刷过程中表现出稳定的电荷行为，并且由于调色剂的散射较少而不会使设备的内部受到污染，并且还 便于维护。 本发明的静电显影显影剂包括至少包含粘合剂树脂和着色剂的着色树脂颗粒和磁性载体，其中一部分所述着色树脂颗粒的粒径在12μm至16μm的范围内 包括在内的所述显影剂，并且所述着色树脂颗粒的特定电荷量满足以下表达式（1）:(其中A表示粒径在12范围内的着色树脂颗粒的比例（体积％） 〜16μm，B表示粒径在12μm〜16μm的范围内的着色树脂粒子的比电荷量Q / M（μC/ g）。

公开(公告)号：US06824943B2

公开(公告)日：2004-11-30

申请号：US10372276

申请日：2003-02-25

申请人： Hideki Gambayashi

发明人： Hideki Gambayashi

IPC分类号： G03G909

CPC分类号： G03G9/0902 ,  G03G9/09708

摘要： The present invention provides a toner for electrostatic image development which employs a black colorant free from a toxic substance and exhibits stable charge behavior even after extended use or printing of a large number of sheets, thus making it possible to provide printed images having sufficient image density without causing toner dispersion, fogging, and variation in image density. This is a toner for electrostatic image development comprising a binder resin and a colorant, wherein the colorant is made of black fine particles obtained by coating the surface of titanium dioxide particles with a complex oxide of titanium and iron.

摘要翻译： 本发明提供了一种用于静电图像显影的调色剂，其使用不含有毒物质的黑色着色剂，并且即使在长时间使用或印刷多个片材之后也表现出稳定的电荷行为，因此可以提供具有足够图像密度的印刷图像 而不会引起调色剂分散，雾化和图像浓度的变化。 这是用于静电图像显影的调色剂，包括粘合剂树脂和着色剂，其中着色剂由通过用钛和铁的复合氧化物涂覆二氧化钛颗粒的表面而获得的黑色细颗粒制成。