公开(公告)号：US5424810A

公开(公告)日：1995-06-13

申请号：US942840

申请日：1992-09-10

申请人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

发明人： Koichi Tomiyama ,  Hiroyuki Suematsu ,  Masayoshi Kato ,  Hiroshi Yusa ,  Takakuni Kobori

IPC分类号： G03G9/083 ,  G03G15/09

CPC分类号： G03G9/0834

摘要： A magnetic toner for electrophotography is composed from a binder resin and a silicon-containing magnetic iron oxide. The magnetic toner has a weigh-average particle size o at most 13.5 .mu.m and has a particle size distribution such that it contains o more than 50 wt, % of magnetic toner particles having a particle size of at least 12.7 .mu.m. The magnetic toner is able to show high developing performances because of richness in fine particles and is also provided with an improved environmental stability because the magnetic iron oxide used therein contains 0.5-4 wt, % silicon (based on total iron content) and has a specific silicon distribution such that the magnetic iron oxide has a total silicon content (A), a silicon content (B) dissolved together with the magnetic iron oxide when the magnetic iron oxide is dissolved up to 20 wt, % dissolution of iron, and a superficial silicon content (C), satisfying relations of B/A=44-84% and C/A=10-55%. The performances are enhanced if the magnetic toner is blended with additives such as inorganic fine powder or resin fine particles.

摘要翻译： 用于电子照相的磁性调色剂由粘合剂树脂和含硅磁性氧化铁组成。 磁性调色剂具有至多13.5μm的重均粒径，并且具有使其含有超过50重量％的粒径至少为12.7μm的磁性调色剂颗粒的粒度分布。 磁性调色剂由于细颗粒的丰富性而能够显示高显影性能，并且由于其中使用的磁性氧化铁含有0.5-4重量％的硅（基于总铁含量）并具有改善的环境稳定性，并且具有 磁性氧化铁具有总硅含量（A），当磁性氧化铁被溶解时与磁性氧化铁溶解在一起的硅含量（B）高达20重量％，铁溶解度高， 表面硅含量（C），满足B / A = 44-84％和C / A = 10-55％的关系。 如果将磁性调色剂与无机细粉或树脂微粒等添加剂混合，则性能得到提高。

公开(公告)号：US6002895A

公开(公告)日：1999-12-14

申请号：US892913

申请日：1997-07-15

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G21/16

CPC分类号： G03G9/0834 ,  G03G9/08795

摘要： A toner is comprised of a composition containing at least a polymer component and a charge control agent. The polymer component contains substantially no tetrahydrofuran (THF)-insoluble matter. The polymer component THF-soluble has a major peak and a minor peak in the specific molecular weight regions in gel permeation chromatography (GPC). The low molecular weight component and high molecular weight component of the polymer component, each of which shows the specific molecular weight region in GPC, have the specific acid values, respectively. The difference between the acid values is in the specific range.

摘要翻译： 调色剂由至少含有聚合物组分和电荷控制剂的组合物组成。 聚合物组分基本上不含四氢呋喃（THF） - 不溶物质。 在凝胶渗透色谱（GPC）中，可溶于THF的聚合物组分在特定分子量区域具有主峰和次峰。 聚合物组分的低分子量组分和高分子量组分分别具有特定的酸值，分别表示GPC中的特定分子量区域。 酸值之间的差异在特定范围内。

公开(公告)号：US5663026A

公开(公告)日：1997-09-02

申请号：US619873

申请日：1996-03-20

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/08 ,  G03G9/083 ,  G03G9/09 ,  G03G9/097 ,  G03G15/09

CPC分类号： G03G9/09775 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0834 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/0838 ,  G03G9/091 ,  G03G9/09783

摘要： A magnetic toner is formed from a binder resin and silicon-containing magnetic iron oxide particles. The magnetic toner has a weight-average particle size of at most 13.5 .mu.m, and the magnetic toner has a particle size distribution such that magnetic toner particles having a particle size of at least 12.7 .mu.m are contained in an amount of at most 50 wt. %. The magnetic iron oxide particles have a silicon content of 0.4-2.0 wt. % based on iron, and the magnetic iron oxide particles have an Fe/Si atomic ratio of 1.2-4.0 at the utmost surfaces thereof. Because of the use of such magnetic iron oxide particles having a specifically controlled overall and surface Si contents, the magnetic toner can show stable performances even after standing in a high humidity environment.

摘要翻译： 磁性调色剂由粘合剂树脂和含硅磁性氧化铁颗粒形成。 磁性调色剂具有至多13.5μm的重均粒径，并且磁性调色剂具有使得粒径至少为12.7μm的磁性调色剂颗粒的含量至多为50 重量 ％。 磁性氧化铁颗粒的硅含量为0.4-2.0重量％。 以铁为基准，磁性氧化铁粒子的最表面的Fe / Si原子比为1.2〜4.0。 由于使用具有特定控制的整体和表面Si含量的这种磁性氧化铁颗粒，因此即使在高湿度环境中放置之后，磁性调色剂也能显示出稳定的性能。

公开(公告)号：US5736288A

公开(公告)日：1998-04-07

申请号：US440935

申请日：1995-05-15

申请人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Hiroyuki Suematsu ,  Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/083 ,  G03G9/087 ,  G03G9/09

CPC分类号： G03G9/091 ,  G03G9/0834 ,  G03G9/08795

摘要： A toner is comprised of a composition containing at least a polymer component and a charge control agent. The polymer component contains substantially no tetrahydrofuran (THF)-insoluble matter. The polymer component THF-soluble has a major peak and a minor peak in the specific molecular weight regions in gel permeation chromatography (GPC). The low molecular weight component and high molecular weight component of the polymer component, each of which shows the specific molecular weight region in GPC, have the specific acid values, respectively. The difference between the acid values is in the specific range.

摘要翻译： 调色剂由至少含有聚合物组分和电荷控制剂的组合物组成。 聚合物组分基本上不含四氢呋喃（THF） - 不溶物质。 在凝胶渗透色谱（GPC）中，可溶于THF的聚合物组分在特定分子量区域具有主峰和次峰。 聚合物组分的低分子量组分和高分子量组分分别具有特定的酸值，分别表示GPC中的特定分子量区域。 酸值之间的差异在特定范围内。

公开(公告)号：US5464722A

公开(公告)日：1995-11-07

申请号：US176231

申请日：1994-01-03

申请人： Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori

发明人： Koichi Tomiyama ,  Hiroshi Yusa ,  Takakuni Kobori

IPC分类号： C09C1/30 ,  C09C1/36 ,  G03G9/08 ,  G03G9/087

CPC分类号： C09C1/3081 ,  C09C1/3684 ,  G03G9/081 ,  G03G9/0817 ,  C01P2004/61

摘要： A toner for developing electrostatic images is produced through a process including the steps of: pre-mixing binder resin particles carrying or containing inorganic fine powder to prepare a premix; melt-kneading the premix to obtain a kneaded product; cooling the kneaded product to obtain a colored resinous solid; pulverizing the colored resinous solid to obtain a pulverized product; and classifying the pulverized product to obtain toner particles. The inclusion of the resin particles carrying or containing inorganic fine powder improves the performance of the pre-mixing to provide an improved dispersion of toner materials within the product toner particles. A fine powder fraction from the classifying step can also be recycled to the premixing step. The resin particles can be toner particles per se. The inorganic fine powder may preferably be silica fine powder treated with silicone oil.

摘要翻译： 通过包括以下步骤的方法生产用于静电图像显影的调色剂：预先混合携带或含有无机细粉末的粘合剂树脂颗粒以制备预混物; 熔融捏合预混物以获得捏合产物; 冷却捏合产物得到有色树脂固体; 粉碎着色树脂固体，得到粉碎物; 并对粉碎产物进行分级以获得调色剂颗粒。 携带或含有无机细粉末的树脂颗粒的包含改善了预混合的性能，以提供调色剂材料在产品调色剂颗粒内的改进的分散体。 来自分级步骤的细粉末部分也可以再循环到预混合步骤。 树脂颗粒本身可以是调色剂颗粒。 无机细粉末优选为用硅油处理的二氧化硅细粉末。

公开(公告)号：US5700616A

公开(公告)日：1997-12-23

申请号：US594795

申请日：1996-01-31

申请人： Takashige Kasuya ,  Osamu Tamura ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

发明人： Takashige Kasuya ,  Osamu Tamura ,  Hiroshi Yusa ,  Takakuni Kobori ,  Masaichiro Katada

IPC分类号： G03G9/08 ,  G03G9/097

CPC分类号： G03G9/09716 ,  G03G9/0819 ,  G03G9/097 ,  G03G9/09725

摘要： A developer for developing an electrostatic image has a toner which contains a particulate toner, a particulate silica A and a particulate silica B. The toner has a weight-average particle size of not larger than 12.0 .mu.m and a particle-number distribution showing not more than 50% of toner particles not larger than 4.0 .mu.m in particle size and not more than 10% of toner particles not smaller than 10.08 .mu.m in particle size, each of the toner particles having a toner composition containing at least a polymer component and a charge controlling agent. The particulate silica A is composed of silicone oil-treated silica particles and has an average particle size of not larger than 0.1 .mu.m, while the particulate silica B is composed of silicone oil-treated silica particles and has an average particle size of 0.5 to 50 .mu.m. The particulate silica B also has a particle-number distribution showing not more than 50% of silica particles not larger than 1.0 .mu.m in particle size and not more than 10% of silica particles not smaller than 100 .mu.m in particle size. Also disclosed is an image forming method which uses this developer.

摘要翻译： 用于显影静电图像的显影剂具有含有颗粒调色剂，颗粒状二氧化硅A和颗粒状二氧化硅B的调色剂。调色剂的重均粒径不大于12.0μm，粒径分布不显示 超过50％的调色剂颗粒的粒度不大于4.0μm，并且不超过10％的不小于10.08μm的调色剂颗粒，每个调色剂颗粒具有至少含有聚合物组分的调色剂组合物 和电荷控制剂。 颗粒状二氧化硅A由硅油处理二氧化硅粒子构成，平均粒径为0.1μm以下，而硅石B由硅油处理二氧化硅粒子构成，平均粒径为0.5〜 50亩。 颗粒状二氧化硅B还具有粒径分布，粒径分布不大于粒径不大于1.0μm的二氧化硅颗粒的50％，粒径不大于100μm的二氧化硅颗粒的10％以下。 还公开了使用该显影剂的图像形成方法。

公开(公告)号：US09665021B2

公开(公告)日：2017-05-30

申请号：US14123961

申请日：2012-06-11

申请人： Takeshi Ohtsu ,  Yuichi Mizo ,  Hironori Minagawa ,  Takakuni Kobori ,  Kohji Takenaka ,  Junichi Hagiwara ,  Daisuke Ito ,  Kunihiko Kawakita

发明人： Takeshi Ohtsu ,  Yuichi Mizo ,  Hironori Minagawa ,  Takakuni Kobori ,  Kohji Takenaka ,  Junichi Hagiwara ,  Daisuke Ito ,  Kunihiko Kawakita

IPC分类号： F26B17/00 ,  F26B3/08 ,  G03G9/08 ,  B01J2/16 ,  B01J8/18 ,  G03G9/087

CPC分类号： G03G9/0804 ,  B01J2/16 ,  B01J8/1836 ,  G03G9/081 ,  G03G9/0815 ,  G03G9/0819 ,  G03G9/0827 ,  G03G9/08755

摘要： A heat treating apparatus for powder particles including a cylindrical treating chamber; a powder particle-supplying unit; a hot air-supplying unit that supplies hot air for heat-treating powder particles; a cold air-supplying unit that supplies cold air for cooling the heat-treated powder particles; a regulating unit for regulating a flow of the supplied powder particles; and a recovering unit that recovers the heat-treated powder particles. The regulating unit is a substantially circular columnar member, the hot air-supplying unit has an outlet opposite to the upper end portion of the columnar member, and the regulating unit is equipped with a substantially conic distributing member for distributing the supplied hot air in a circumferential direction and a rotating member for rotating the distributed hot air in a spiral manner, on the center of the upper end portion.

公开(公告)号：US20140120468A1

公开(公告)日：2014-05-01

申请号：US14123960

申请日：2012-06-11

申请人： Yuichi Mizo ,  Hironori Minagawa ,  Takakuni Kobori ,  Kohji Takenaka ,  Takeshi Ohtsu ,  Junichi Hagiwara ,  Daisuke Ito ,  Kunihiko Kawakita

发明人： Yuichi Mizo ,  Hironori Minagawa ,  Takakuni Kobori ,  Kohji Takenaka ,  Takeshi Ohtsu ,  Junichi Hagiwara ,  Daisuke Ito ,  Kunihiko Kawakita

IPC分类号： G03G9/08 ,  F26B17/10

CPC分类号： G03G9/0802 ,  F26B17/103 ,  G03G9/0804 ,  G03G9/0806 ,  G03G9/0808 ,  G03G9/081 ,  G03G9/0815

摘要： A production apparatus that does not generate coalesced particles and can reduce a generation frequency of a product having a high circularity by a uniform treatment even if the throughput is increased is provided. A heat treating apparatus for powder particles containing a binder resin and a colorant, the heat treating apparatus including: a treating chamber 6 in which a heat treatment of the powder particles is performed; a raw material-supplying unit for supplying the powder particles to the treating chamber; a hot air-supplying unit 7 that supplies hot air to the treating chamber; a cold air-supplying unit 8 that supplies cold air for cooling the heat-treated powder particles; and a recovering unit 10 that recovers the heat-treated powder particles; wherein the raw material-supplying unit includes an introducing tube 3 and a distributing member, and the distributing member is provided with a protruding member 4 on a portion opposite to an outlet portion of the introducing tube, and the distributing member includes a supplying tube 5 including two or more flow paths that extend radially outwardly from the protruding member to a wall surface of the treating chamber.

摘要翻译： 提供了即使生产量增加，也不产生聚结颗粒并且可以通过均匀处理降低具有高圆形度的产品的产生频率的生产设备。 一种含有粘合剂树脂和着色剂的粉末颗粒的热处理设备，所述热处理设备包括：处理室6，其中进行粉末颗粒的热处理; 用于将粉末颗粒供给到处理室的原料供给单元; 向处理室供给热空气的热风供给部7; 供给用于冷却经热处理的粉末颗粒的冷空气的冷气供给单元8; 以及回收单元10，其回收经热处理的粉末颗粒; 其中原料供给单元包括引入管3和分配构件，分配构件在与导入管的出口部相反的部分上设置有突出构件4，分配构件包括供给管5 包括从突出构件径向向外延伸到处理室的壁表面的两个或更多个流动路径。

公开(公告)号：US06235441B1

公开(公告)日：2001-05-22

申请号：US09465836

申请日：1999-12-17

申请人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

发明人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

IPC分类号： G03G900

CPC分类号： G03G9/08793 ,  G03G9/08722 ,  G03G9/08726 ,  G03G9/0874 ,  G03G9/08791 ,  G03G9/08795 ,  G03G9/09758

摘要： A positively chargeable toner suitable to be carried on a cylindrical developer-carrying member having a resinous surface for developing an electrostatic latent image is formed from a composition including a binder resin, an imidazole compound and a colorant. The binder resin comprises at least one member selected from the group consisting of (i) a mixture of vinyl resin having a carboxyl group and a vinyl resin having a glycidyl group, (ii) a vinyl resin having both a carboxyl group and a glycidyl group, and (iii) a vinyl resin having a carboxyl group and a glycidyl group in a form reacted with each other. The imidazole compound is a compound having an imidazo unit represented by formula (1) below: wherein R1-R4 independently denote hydrogen or a substituent as specified. In some cases, two or more such imidazole units can be included in a combined form to provide the imidazole compound. The imidazole compound is effective for promoting a crosslinking reaction between the carboxyl group and the glycidyl group to provide the toner with improved fixability and anti-offset property in combination.

摘要翻译： 由具有粘合剂树脂，咪唑化合物和着色剂的组合物形成适于承载在具有用于显影静电潜像的树脂表面的圆筒形显影剂承载构件上的可充正电的调色剂。 粘合剂树脂包括选自（i）具有羧基的乙烯基树脂和具有缩水甘油基的乙烯基树脂的混合物中的至少一种，（ii）具有羧基和缩水甘油基的乙烯基树脂 ，和（iii）具有相互反应形式的具有羧基和缩水甘油基的乙烯基树脂。 咪唑化合物是具有由下式（1）表示的咪唑单元的化合物：其中R 1 -R 4独立地表示氢或如所规定的取代基。 在一些情况下，两种或多种这样的咪唑单元可以以组合形式包括以提供咪唑化合物。 咪唑化合物对于促进羧基和缩水甘油基之间的交联反应是有效的，以提供具有改进的定影性和抗偏移性的组合的调色剂。

公开(公告)号：US06203959B1

公开(公告)日：2001-03-20

申请号：US09521378

申请日：2000-03-08

申请人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

发明人： Hirohide Tanikawa ,  Masami Fujimoto ,  Takakuni Kobori ,  Hiroyuki Fujikawa

IPC分类号： G03G908

CPC分类号： G03G9/08782

摘要： An electrophotographic toner is formed of a resinous composition including a binder resin and a wax (A). The wax (A) contains at least 92 wt. % thereof of n (normal)-paraffin comprising a plurality of n-paraffin species having different numbers of carbon atoms, and provides a DSC (differential scanning calorimetry)-heat-absorption curve exhibiting a maximum heat-absorption peak showing a peaktop temperature of 70-90° C. and a half-value width of at most 12° C. As a result of the n-paraffin-rich characteristic and the DSC-thermal characteristic, the wax can exhibit an improved fixability-improving effect without showing an excessive plasticizing effect, whereby the toner can exhibit good fixability as well as good flowability and storage stability.

摘要翻译： 电子照相调色剂由包含粘合剂树脂和蜡（A）的树脂组合物形成。 蜡（A）含有至少92重量％ 包含具有不同碳原子数的多个正链烷烃的n（正常） - 石蜡的％的％，并且提供显示最大吸热峰的DSC（差示扫描量热法） - 热吸收曲线，其显示峰顶温度 70-90℃，半值宽度最多为12℃。作为正链烷烃丰富特性和DSC-热特性的结果，蜡可以表现出改进的定影性改善效果，而不显示 过度的增塑效果，由此调色剂可以表现出良好的定影性以及良好的流动性和储存稳定性。