公开(公告)号：US08871419B2

公开(公告)日：2014-10-28

申请号：US13525579

申请日：2012-06-18

申请人： Saburou Hiraoka ,  Tomomi Oshiba ,  Mikihiko Sukeno ,  Tomoko Mine ,  Hitomi Motani ,  Tatsuya Nagase ,  Ken Ohmura

发明人： Saburou Hiraoka ,  Tomomi Oshiba ,  Mikihiko Sukeno ,  Tomoko Mine ,  Hitomi Motani ,  Tatsuya Nagase ,  Ken Ohmura

IPC分类号： G03G9/087 ,  G03G9/08

CPC分类号： G03G9/0804 ,  G03G9/0819 ,  Y10T137/0318 ,  Y10T137/0391

摘要： The toner for electrostatic image development has excellent charge properties, by which excellent toner particle size-controlling ability is achieved, and moreover the sharpening of a particle size distribution is achieved. The toner is composed of toner particles containing a binder resin. The process has an aggregating step of adding an aggregating agent containing a transition element into an aqueous medium of dispersed fine binder resin particles to aggregate the fine binder resin particles, and an aggregation-stopping step of adding an aggregation stopper composed on a sulfur atom-containing compound exhibiting a reducing action on the aggregating agent. The aggregating agent is a salt of a bivalent or higher metal selected from Sr, Ti, V, Cr, Mn, Fe, Co, Ni and Cu.

摘要翻译： 用于静电图像显影的调色剂具有优异的充电性能，通过该调色剂实现优异的调色剂粒度控制能力，并且还实现了粒度分布的锐化。 调色剂由含有粘合剂树脂的调色剂颗粒组成。 该方法具有将含有过渡元素的聚集剂添加到分散的细粘合剂树脂颗粒的水性介质中以聚集细粘合剂树脂颗粒的聚集步骤，以及聚集停止步骤， 对聚集剂具有还原作用的含氟化合物。 聚集剂是选自Sr，Ti，V，Cr，Mn，Fe，Co，Ni和Cu中的二价或更高级金属的盐。

公开(公告)号：US08652728B2

公开(公告)日：2014-02-18

申请号：US13271477

申请日：2011-10-12

申请人： Tomoko Mine ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Saburou Hiraoka

发明人： Tomoko Mine ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Saburou Hiraoka

IPC分类号： G03G9/00

CPC分类号： G03G9/08755 ,  G03G9/08711 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09321 ,  G03G9/09328 ,  G03G9/09364 ,  G03G9/09371

摘要： A toner comprising toner particles containing a binder resin comprising a crystalline polyester resin, a non-crystalline polyester resin and an acryl resin having a cross-link structure, and the acryl resin having a cross-link structure has a cross-link site derived from a crosslinking agent represented by the following formula (1): CH2═CR1—C(═O)O—Z—OC(═O)—CR2═CH2  Formula (1) wherein R1 and R2 are each a hydrogen atom or an alkyl group of 1 to 3 carbon atoms, and Z is a hydrocarbon group of 2 to 90 carbon atoms, provided that the hydrocarbon group may include an ether linkage, an ester linkage, a heterocyclic ring or a substituent.

摘要翻译： 包含含有结晶聚酯树脂，非结晶聚酯树脂和具有交联结构的丙烯酸树脂的粘合剂树脂的调色剂颗粒的调色剂和具有交联结构的丙烯酸树脂具有衍生自 由下式（1）表示的交联剂：CH2 = CR1-C（= O）OZ-OC（= O）-CR2 = CH2Formula（1）其中R1和R2各自为氢原子或1 至3个碳原子，Z为2-90个碳原子的烃基，条件是该烃基可包括醚键，酯键，杂环或取代基。

公开(公告)号：US08642242B2

公开(公告)日：2014-02-04

申请号：US13281935

申请日：2011-10-26

申请人： Saburou Hiraoka ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Kenji Hayashi ,  Tomoko Mine

发明人： Saburou Hiraoka ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Kenji Hayashi ,  Tomoko Mine

IPC分类号： G03G9/087

CPC分类号： G03G9/08793 ,  G03G9/0806 ,  G03G9/0821 ,  G03G9/08755 ,  G03G9/08795 ,  G03G9/08797 ,  G03G9/09328 ,  G03G9/09371

摘要： Provided is a method of manufacturing toner by which the toner capable of forming high quality images and reproducing high density gradation, which exhibits an excellent high-temperature offsetting property together with excellent low-temperature fixability, and provides appropriate gloss with respect to images to be formed, can be stably prepared; and also provided is the toner. After conducting a step in which particles made of at least a crystalline polyester resin are coagulated to form core coagulated particles, and an unsaturated amorphous polyester resin particle is attached onto the surface of each of the core coagulated particles to form core-shell type coagulated particles, radical polymerization reaction is conducted by acting a radical polymerization initiator on the foregoing core-shell type coagulated particles to conduct a step in which a layer made of a crosslinking amorphous polyester resin is formed on the surface of each of the core coagulated particles.

摘要翻译： 提供一种制造调色剂的方法，通过该调色剂能够形成高质量图像并再现高密度等级的调色剂，其具有优异的高温抵消性能以及优异的低温定影性，并且对于图像提供适当的光泽度 形成，可以稳定准备; 并且还提供了调色剂。 在进行由至少结晶性聚酯树脂制成的粒子凝固形成铁心凝固粒子的工序后，在各凝固粒子的表面上附着不饱和非晶质聚酯树脂粒子，形成核壳型凝固粒子 通过在上述核 - 壳型凝结粒子上进行自由基聚合引发剂进行自由基聚合反应，进行在每个芯凝固粒子的表面上形成由交联性无定形聚酯树脂构成的层的工序。

公开(公告)号：US08586278B2

公开(公告)日：2013-11-19

申请号：US13272558

申请日：2011-10-13

申请人： Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Kenji Hayashi ,  Saburou Hiraoka ,  Tomoko Mine

发明人： Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Tomomi Oshiba ,  Kenji Hayashi ,  Saburou Hiraoka ,  Tomoko Mine

IPC分类号： G03G9/093

CPC分类号： G03G9/08755 ,  G03G9/0806 ,  G03G9/08793 ,  G03G9/08797 ,  G03G9/09321 ,  G03G9/09328 ,  G03G9/09371 ,  G03G9/09392

摘要： A method of producing an electrostatic image developing toner comprising toner particles comprising a binder resin containing at least a non-crystalline polyester resin having a crosslinking structure and a crystalline polyester resin, the method comprising the steps of (a-1) preparing a crystalline polyester resin particle aqueous dispersion liquid; (a-2) preparing a polymerizable unsaturated non-crystalline polyester resin aqueous dispersion liquid; (b) preparing crosslinking non-crystalline polyester resin particles by adding a radical polymerization initiator to the aqueous dispersion liquid of particles containing the non-crystalline polyester resin having a polymerizable unsaturated bond; (c) preparing core particles by aggregating at least the particles containing the crystalline polyester resin in an aqueous medium; and (d) preparing a shell layer containing the non-crystalline polyester resin having a crosslinking structure by fusing the particles containing the non-crystalline polyester resin having a crosslinking structure on surfaces of the core particles in an aqueous medium.

摘要翻译： 一种静电图像显影调色剂的制造方法，其包含调色剂颗粒，所述调色剂颗粒包含至少含有具有交联结构的非结晶性聚酯树脂和结晶性聚酯树脂的粘合剂树脂，所述方法包括以下步骤：（a-1）制备结晶聚酯 树脂颗粒水分散液; （a-2）制备聚合性不饱和非结晶性聚酯树脂水性分散液; （b）通过向包含具有聚合性不饱和键的非结晶性聚酯树脂的粒子的水性分散液中添加自由基聚合引发剂来制备交联的非结晶性聚酯树脂粒子; （c）通过在水性介质中至少聚集含有结晶性聚酯树脂的颗粒来制备芯颗粒; 和（d）通过在水性介质中将含有具有交联结构的非结晶性聚酯树脂的颗粒在芯颗粒的表面上熔融来制备含有具有交联结构的非结晶性聚酯树脂的壳层。

公开(公告)号：US08497059B2

公开(公告)日：2013-07-30

申请号：US13228030

申请日：2011-09-08

申请人： Tomomi Oshiba ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Kenji Hayashi ,  Saburou Hiraoka ,  Tomoko Mine

发明人： Tomomi Oshiba ,  Mikihiko Sukeno ,  Hajime Tadokoro ,  Ken Ohmura ,  Tatsuya Nagase ,  Kenji Hayashi ,  Saburou Hiraoka ,  Tomoko Mine

IPC分类号： G03G9/087

CPC分类号： G03G9/0806 ,  G03G9/08755 ,  G03G9/08793 ,  G03G9/08795 ,  G03G9/08797

摘要： A method of producing a toner comprising toner particles containing a binder resin composed of a non-crystalline polyester resin having a crosslinked structure and a crystalline polyester resin is disclosed, the method comparing steps of; a process to form an oil phase liquid by dissolving or dispersing a non-crystalline polyester resin having a polymerizable unsaturated double bond and a crystalline polyester resin in an organic solvent, a process to form an aqueous dispersion liquid of oil droplets of the oil phase liquid by dispersing the oil phase liquid in an aqueous medium, a process to form oil droplets containing the non-crystalline polyester resin having a crosslinked structure by adding a radical polymerization initiator to the aqueous dispersion liquid of oil droplets, and an organic solvent removing process to form toner particles by removing organic solvent.

摘要翻译： 公开了一种制造调色剂的方法，该调色剂包含由具有交联结构的非结晶性聚酯树脂和结晶性聚酯树脂构成的粘合剂树脂的调色剂颗粒。 通过将具有聚合性不饱和双键的非结晶性聚酯树脂和结晶性聚酯树脂溶解或分散在有机溶剂中来形成油相液体的方法，形成油相液体油滴的水性分散液的方法 通过将油相液体分散在水性介质中，通过向油滴的水性分散液中添加自由基聚合引发剂而形成含有具有交联结构的非结晶性聚酯树脂的油滴的工序，以及有机溶剂除去工序 通过除去有机溶剂形成调色剂颗粒。

公开(公告)号：US20060177752A1

公开(公告)日：2006-08-10

申请号：US10734942

申请日：2003-12-12

申请人： Tomomi Oshiba ,  Ken Ohmura ,  Shigenori Kouno ,  Hiroshi Yamazaki

发明人： Tomomi Oshiba ,  Ken Ohmura ,  Shigenori Kouno ,  Hiroshi Yamazaki

IPC分类号： G03G9/08

CPC分类号： G03G9/09708 ,  G03G9/0902

摘要： A toner for developing an electrostatic image is disclosed. The toner contains an amount of not less than 0.1% by weight of an element selected from elements of the Groups of 1B, 2B, 4B, 5B, 6B, 7B, 8, 3A and 4A of the fourth and fifth periodic of the long periodic table of the elements, and the isolation ratio of the element is not more than 10% by number.

公开(公告)号：US06287740B1

公开(公告)日：2001-09-11

申请号：US09767095

申请日：2001-01-22

申请人： Ken Ohmura ,  Tomomi Oshiba

发明人： Ken Ohmura ,  Tomomi Oshiba

IPC分类号： G03G9097

摘要： A toner for electrophotography is disclosed. The toner comprises a binder resin and a colorant and a wax in amount of 0.5 to 8 percent by weight, and adhesion power index of wax particles to toner particles is between 0.7 and 2.2. The toner improves the durability of the developer material and a photoreceptor, minimizes image smear at high temperature and humidity, and exhibits excellent fixation as well as offsetting resistance.

公开(公告)号：US06248494B1

公开(公告)日：2001-06-19

申请号：US09452075

申请日：1999-11-30

申请人： Hiroshi Yamazaki ,  Ken Ohmura ,  Tomomi Oshiba ,  Meizo Shirose ,  Shigenori Kouno

发明人： Hiroshi Yamazaki ,  Ken Ohmura ,  Tomomi Oshiba ,  Meizo Shirose ,  Shigenori Kouno

IPC分类号： G03G9097

CPC分类号： G03G9/09

摘要： A toner for developing an electrostatic image is disclosed. The toner comprises colored particles containing a resin and a colorant, the volume average particle diameter of said colored particles is 3 to 9 &mgr;m, the shape coefficient of said colored particles, which is described by the formula below, is 1.3 to 2.2, and the ratio of toner particles having a shape coefficient of 1.5 to 2.0 is at least 80 percent by number. Shape coefficient=[(maximum diameter/2)2×&pgr;]/(projection area) A developer and image forming method employing the toner are also disclosed.

摘要翻译： 公开了用于显影静电图像的调色剂。 调色剂包含含有树脂和着色剂的着色颗粒，所述着色颗粒的体积平均粒径为3至9μm，由下式描述的所述着色颗粒的形状系数为1.3至2.2，并且 具有1.5至2.0的形状系数的调色剂颗粒的比例至少为80％。使用调色剂的显影剂和图像形成方法也被公开。

公开(公告)号：US06197468B1

公开(公告)日：2001-03-06

申请号：US09378899

申请日：1999-08-23

申请人： Ken Ohmura ,  Tomomi Oshiba

发明人： Ken Ohmura ,  Tomomi Oshiba

IPC分类号： G03G9097

CPC分类号： G03G9/08704 ,  G03G9/08782

摘要： A toner for electrophotography is disclosed. The toner comprises a binder resin and a colorant and a wax in amount of 0.5 to 8 percent by weight, and adhesion power index of wax particles to toner particles is between 0.7 and 2.2. The toner improves the durability of the developer material and a photoreceptor, minimizes image smear at high temperature and humidity, and exhibits excellent fixation as well as offsetting resistance.

公开(公告)号：US07634217B2

公开(公告)日：2009-12-15

申请号：US11680005

申请日：2007-02-28

申请人： Kishio Tamura ,  Ken Ohmura ,  Tomomi Oshiba ,  Sayuri Nakano

发明人： Kishio Tamura ,  Ken Ohmura ,  Tomomi Oshiba ,  Sayuri Nakano

IPC分类号： G03G15/08

CPC分类号： G03G15/0879 ,  G03G15/0855 ,  G03G15/0865 ,  G03G15/0874 ,  G03G2215/068 ,  G03G2215/0682

摘要： An image forming method wherein a storage container, accommodating the toner having a volume-based median diameter of 3.5 μm through 8.5 μm and containing a resin having a glass-transition temperature of 0° C. through 46° C. and a softening point of 75° C. through 110° C., is included in an packaging container made of a substance having an apparent density of 0.1 through 0.3; and a toner supply section constituting the storage container is exposed to the outside from the packaging container, and is loaded on the image forming apparatus, whereby toner is supplied to the image forming apparatus.

摘要翻译： 一种图像形成方法，其中容纳容纳基于体积的中值粒径为3.5μm至8.5μm的调色剂的储存容器，并且含有玻璃化转变温度为0℃至46℃的树脂和软化点 包括在表观密度为0.1〜0.3的物质的包装容器中，75℃〜110℃。 并且构成储存容器的调色剂供应部分从包装容器暴露于外部，并且被装载在图像形成装置上，由此向图像形成装置供应调色剂。