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1. 发明授权

US06203957B1 Spherical toner particle 有权
标题翻译：球形调色剂颗粒
公开(公告)号：US06203957B1
公开(公告)日：2001-03-20
申请号：US09239823
申请日：1999-01-29
申请人： Minoru Nomura , Hitoshi Takayanagi , Kenichi Hirabayashi , Takashi Ito , Kazuo Itoya , Masahiro Yoshida
发明人： Minoru Nomura , Hitoshi Takayanagi , Kenichi Hirabayashi , Takashi Ito , Kazuo Itoya , Masahiro Yoshida
IPC分类号： G03G1306
CPC分类号： G03G9/0902 , G03G9/0804 , G03G9/0806 , G03G9/0819 , G03G9/0827 , G03G9/097
摘要： A spherically particulate toner characterized by a volume-average particle diameter of from 1 to 6 &mgr;m, a colorant content of not less than 9.1% by weight, particularly not less than 5% by weight when the colorant is an organic chromatic pigment, based on the total weight of the binder resin and colorant used and an average circularity (average of circularity defined by (perimeter of circle having the same area as the projected area of particle)/(perimeter of the projected image of particle)) of not less than 0.98. The spherically particulate toner according to the present invention gives an excellent image quality and can be consumed in a drastically reduced amount per sheet of printing paper. By predetermining the particle size distribution of spherical toner particles and the added amount of inorganic oxide fine particles to optimum values, the image quality can be further improved.
摘要翻译：一种球形颗粒状调色剂，其特征在于体积平均粒径为1至6μm，当着色剂为有机彩色颜料时，着色剂含量不低于9.1重量％，特别是不低于5重量％，基于所使用的粘合剂树脂和着色剂的总重量和平均圆形度（圆周度（由颗粒的投影面积相同面积的圆的周长）/（颗粒的投影图像的周长））的平均值不小于 0.98。根据本发明的球形颗粒调色剂具有优异的图像质量，并且可以以每张打印纸大幅减少的量消耗。通过将球形调色剂颗粒的粒度分布和无机氧化物微粒的添加量预先确定为最佳值，可以进一步提高图像质量。

2. 发明授权

US06248491B1 Toner for electrostatic image development 有权
标题翻译：调色剂用于静电图像显影
公开(公告)号：US06248491B1
公开(公告)日：2001-06-19
申请号：US09666555
申请日：2000-09-21
申请人： Hitoshi Takayanagi , Minoru Nomura , Takashi Ito , Kenichi Hirabayashi , Yukiko Soma , Toshiro Kogawara , Toyomi Hashizume , Kazuo Itoya
发明人： Hitoshi Takayanagi , Minoru Nomura , Takashi Ito , Kenichi Hirabayashi , Yukiko Soma , Toshiro Kogawara , Toyomi Hashizume , Kazuo Itoya
IPC分类号： G03G9087
CPC分类号： G03G9/0827 , G03G9/08755 , G03G9/08795
摘要： The present invention provides a polyester resin toner which has good fixing properties and is superior in image quality in a heat roller fixation system without employing an anti-offset solution, and which has a spherical or generally spherical shape and has a small particle diameter, and a method of producing the same. In a toner for electrostatic image development comprising a binder resin and a colorant, said binder resin is made of a polyester resin. Furthermore, the weight-average molecular weight as measured by gel permeation chromatography of a tetrahydrofuran-soluble fraction of said polyester resin contained in the toner is 30,000 or more and the weight-average molecular weight/number-average molecular weight is 12 or more and, moreover, the area ratio of a molecular weight of 600,000 or more is 0.5% or more and the area ratio of a molecular weight of 10,000 or less is within a range of 20-80%. The toner for electrostatic image development has a spherical or generally spherical shape having the average circularity (average value of circularity defined by (perimeter of a circle having the same area as that of a projected area of particles)/(perimeter of a projected image of particles)) of 0.97 or more.
摘要翻译：本发明提供一种聚酯树脂调色剂，其具有良好的定影性能，并且在不使用防偏移溶液的热辊定影系统中具有优异的图像质量，并且具有球形或大致球形并且具有小的粒径，以及其制造方法。在包含粘合剂树脂和着色剂的用于静电图像显影的调色剂中，所述粘合剂树脂由聚酯树脂制成。此外，通过凝胶渗透色谱法测定调色剂中所含的所述聚酯树脂的四氢呋喃可溶部分的重均分子量为30,000以上，重均分子量/数均分子量为12以上，此外，分子量为600,000以上的面积比为0.5％以上，分子量为10,000以下的面积比在20〜80％的范围内。用于静电图像显影的调色剂具有平均圆形度的球形或大致球形形状（由圆周的平均值（具有与颗粒的投影面积相同的面积的圆的周长）/（投影图像的周长）颗粒））为0.97以上。

3. 发明授权

US06183924B2 Electrostatic image developer 有权
标题翻译：静电影像显影剂
公开(公告)号：US06183924B2
公开(公告)日：2001-02-06
申请号：US09256311
申请日：1999-02-24
申请人： Minoru Nomura , Takashi Ito , Hitoshi Takayanagi , Kazuo Itoya
发明人： Minoru Nomura , Takashi Ito , Hitoshi Takayanagi , Kazuo Itoya
IPC分类号： G03G909
CPC分类号： G03G9/08 , G03G9/0819 , G03G9/0827 , G03G9/0904 , G03G9/10
摘要： The present invention provides a novel developer comprising a spherically particulate toner having a volume-average particle diameter of from about 1 to 6 &mgr;m for use in the development of electrostatic image in electrophotographic copying machines or printers having a colorant content of from 8 to 20% by weight, if the colorant is carbon black, or from 3 to 20% by weight, if the colorant is an organic pigment, based on the sum of the weight of binder resin and colorant and a resin-coated carrier having a volume-average particle diameter of from 20 to 150 &mgr;m. The present invention also provides a suitable polymerization or emulsification process for the preparation of a particulate toner to be incorporated in the developer. The use of the electrostatic image developer makes it possible to not only improve the quality of images provided by copying machines or printers but also realize drastic reduction of the amount of toner to be consumed per sheet of printing paper.
摘要翻译：本发明提供了一种新型显影剂，其包含体积平均粒径为约1至6μm的球形颗粒调色剂，用于显影静电复印机或着色剂含量为8至20％的印刷机中的静电图像，，如果着色剂为炭黑，或3至20重量％，如果着色剂是有机颜料，则基于粘合剂树脂和着色剂的重量和具有体积平均值的树脂涂布的载体之和粒径为20〜150μm。本发明还提供了合适的聚合或乳化方法，用于制备掺入显影剂中的颗粒调色剂。静电图像显影剂的使用使得不仅可以提高复印机或打印机提供的图像的质量，而且可以大大减少每张打印纸要消耗的调色剂的量。

4. 发明授权

US6127083A Image forming method using spherical toner particle 有权
标题翻译：使用球形调色剂颗粒的成像方法
公开(公告)号：US6127083A
公开(公告)日：2000-10-03
申请号：US239822
申请日：1999-01-29
申请人： Minoru Nomura , Takashi Ito , Hitoshi Takayanagi , Kazuo Itoya
发明人： Minoru Nomura , Takashi Ito , Hitoshi Takayanagi , Kazuo Itoya
IPC分类号： G03G9/08 , G03G9/087 , G03G9/09 , G03G13/08 , G03G15/08
CPC分类号： G03G13/08
摘要： A non-magnetic one-component development process is provided which comprises supplying a developer onto a photoreceptor using a non-magnetic one-component developing machine comprising at least a developer-supporting roll and a layer-forming blade so that an electrostatic latent image on said photoreceptor is developed, characterized in that as said developer there is used a spherically particulate toner having a volume-average particle diameter of from 1 to 6 .mu.m and the amount of said toner to be attached to said developer-supporting roll is from 0.1 mg/cm.sup.2 to 0.45 mg/cm.sup.2. In accordance with the process of the present invention, the image quality can be drastically improved while drastically reducing the consumed amount of the toner. In particular, by predetermining the colorant content in the spherically particulate toner to be used in the development process of the present invention to not less than 8% by weight, if the colorant is carbon black, or not less than 3% by weight, if the colorant is an organic pigment, the image quality can be further improved. Further, by optimizing the circularity, particle size distribution, added amount of inorganic material fine particles and other conditions of the spherically particulate toner, the image quality can be even further improved.
摘要翻译：提供一种非磁性单组分显影方法，其包括使用非磁性单组分显影机将显影剂供应到感光体上，所述非磁性单组分显影机至少包括显影剂支撑辊和层形成刮板，使得静电潜像所述感光体被开发，其特征在于，作为所述显影剂，使用体积平均粒径为1至6μm的球形颗粒调色剂，并且所述显影剂负载辊附着的调色剂的量为0.1 mg / cm 2至0.45mg / cm 2。根据本发明的方法，可以显着地提高图像质量，同时显着降低调色剂的消耗量。特别地，通过将本发明的显影方法中使用的球形颗粒调色剂中的着色剂含量预先确定为不小于8重量％，如果着色剂为炭黑，或不小于3重量％，则如果着色剂是有机颜料，可以进一步提高图像质量。此外，通过优化圆形度，粒度分布，无机材料微粒的添加量等球状颗粒调色剂的其他条件，可以进一步提高图像质量。

5. 发明授权

US5885743A Electrophotographic toner and process for the preparation thereof 失效
标题翻译：电子照相调色剂及其制备方法
公开(公告)号：US5885743A
公开(公告)日：1999-03-23
申请号：US979786
申请日：1997-11-26
申请人： Hitoshi Takayanagi , Hiroko Sakurai , Kazuo Itoya , Kinji Shinzo , Yukiko Soma , Kenichi Hirabayashi , Koichiro Matsuki , Minoru Nomura , Takashi Ito , Hiroyuki Ohminato
发明人： Hitoshi Takayanagi , Hiroko Sakurai , Kazuo Itoya , Kinji Shinzo , Yukiko Soma , Kenichi Hirabayashi , Koichiro Matsuki , Minoru Nomura , Takashi Ito , Hiroyuki Ohminato
IPC分类号： G03G9/08 , G03G9/087 , G03G9/097 , G03G9/093
CPC分类号： G03G9/08711 , G03G9/0819 , G03G9/0821 , G03G9/09716
摘要： Disclosed are an electrophotographic toner which is a spherical particle comprising a binder resin having encapsulated therein a colorant and has a volume average particle size of from 3 to 12 .mu.m, the binder resin being a non-crosslinked styrene-acrylic resin having an acid value of from 30 to 120, containing from 5 to 60% by weight of the components having a molecular weight in terms of polystyrene by gel permeation chromatography of 200,000 or more and having a ratio (Mw/Mn) of the weight-average molecular weight Mw to the number-average molecular weight Mn of from 4 to 30; and a process for preparing an electrophotographic toner comprising spherical particles having a volume average grain size of from 3 to 12 .mu.m, the process comprising mixing a mixture comprising the above-described resin, a colorant, a wax and an organic solvent as essential components with an aqueous medium in the presence of a neutralizer in an amount sufficiently large to render the resin self-emulsifiable to effect phase inversion emulsification, thereby producing particles each comprising a binder resin having encapsulated therein a colorant and a wax in the liquid medium, and separating and drying the particles. The toner obtained by the present invention is improved in the thermal fixing characteristics and the environmental stability of charging, exhibits a wide fixing temperature width at the heated roll fixing and has excellent triboelectricity.
摘要翻译：公开了一种电子照相调色剂，其为包含粘合剂树脂的球形颗粒，其中包含着色剂，其体积平均粒度为3至12μm，粘合剂树脂为具有酸值的非交联苯乙烯 - 丙烯酸树脂为30〜120，含有5〜60重量％的通过凝胶渗透色谱法测定的聚苯乙烯换算成分的成分为20万以上，重均分子量Mw（Mw / Mn）数均分子量Mn为4〜30; 以及一种制备电荷调色剂的方法，该电子照相调色剂包含体积平均粒度为3至12μm的球形颗粒，该方法包括将包含上述树脂，着色剂，蜡和有机溶剂的混合物作为必要组分在中和剂存在下的水性介质，其量足够大以使树脂自乳化以实现相转化乳化，从而产生各自包含在其中包含着色剂和蜡在液体介质中的粘合剂树脂的颗粒，以及分离和干燥颗粒。通过本发明获得的调色剂在热定影特性和充电的环境稳定性方面得到改善，在加热辊定影时具有宽的定影温度宽度，并且具有优异的摩擦电性。

6. 发明授权

US08198391B2 Pigment dispersion and aqueous ink for inkjet recording 有权
标题翻译：用于喷墨记录的颜料分散体和水性油墨
公开(公告)号：US08198391B2
公开(公告)日：2012-06-12
申请号：US13121547
申请日：2009-09-16
申请人： Kazuo Itoya , Hiroshi Kinoshita
发明人： Kazuo Itoya , Hiroshi Kinoshita
IPC分类号： C08G18/00 , C08G18/08 , C08G18/28 , C08G18/70 , C08J3/00 , C08K3/20 , C08L75/00
CPC分类号： C08G18/282 , C08G18/00 , C08G18/0823 , C08G18/42 , C08G18/4854 , C08G18/755 , C08G18/758 , C08G18/7621 , C08G18/8048 , C08L33/10 , C08L75/04 , C09B67/0066 , C09B67/0067 , C09B67/009 , C09D11/322 , C09D11/326 , C09D17/001 , C09D175/04 , C08L2666/04
摘要： There is provided a pigment dispersion including water, an aqueous polymer and a pigment as essential components, wherein the aqueous polymer is a carboxyl group-containing polyurethane which is formed by reacting a diol compound, a diisocyanate compound and a reaction product, which is mainly composed of a compound represented by general formula (1) and prepared by reacting a diol compound having one or two carboxyl groups within each molecule with a diisocyanate compound and which also has a reaction index as calculated by (Formula 1) within a range from 0.95 to 1.10. Reaction index=(reaction rate of isocyanate group)×[(number of moles of diisocyanate compound(B))/(number of moles of diol compound(A))] (Formula 1)
摘要翻译：提供了包含水，聚合物和颜料作为必要成分的颜料分散体，其中，水性聚合物是通过使二醇化合物，二异氰酸酯化合物和反应产物反应形成的含羧基的聚氨酯，其主要是由通式（1）表示的化合物组成，其通过使各分子内具有一个或两个羧基的二醇化合物与二异氰酸酯化合物反应制备，并且其反应指数（式1）的计算值在0.95以下至1.10。反应指数=（异氰酸酯基的反应速度）×[（二异氰酸酯化合物（B）的摩尔数）/（二醇化合物（A）的摩尔数）]（式1）

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