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1.发明授权
公开(公告)号：US5670287A
公开(公告)日：1997-09-23
申请号：US505852
申请日：1995-07-24
CPC分类号： G03G9/1135 , G03G9/1131 , G03G9/1133 , G03G9/1137 , Y10T428/2998
摘要： A magnetic carrier for electrophotographic developing agent wherein the surfaces of the magnetic core particles are partly coated with a thermosetting resin and a small amount of a low-melting or low-softening thermoplastic resin or wax, and at least recessed portions of the core particles are filled with these coating materials. The magnetic carrier has an electric resistance that is maintained within a range that is suited for forming the image, and suppresses the occurrence of spent toner.
摘要翻译： 一种用于电子照相显影剂的磁性载体，其中磁芯颗粒的表面部分地涂覆有热固性树脂和少量的低熔点或低软化的热塑性树脂或蜡，并且至少凹陷部分的芯颗粒是 填充这些涂料。 磁性载体具有保持在适于形成图像的范围内的电阻，并且抑制废色剂的发生。
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公开(公告)号：US20050287456A1
公开(公告)日：2005-12-29
申请号：US11165526
申请日：2005-06-23
申请人： Hidekazu Tamura
发明人： Hidekazu Tamura
CPC分类号： G03G9/0827 , G03G9/0819 , G03G9/0821 , G03G9/083 , G03G9/0834 , G03G9/0837 , G03G9/0838
摘要： A magnetic one-component toner of the invention contains at least a binding resin and a magnetic powder, and has a volume average particle size of 6.0 to 9.0 μm, a compressibility of 15 to 50%, and a mean roundness of 0.950 to 0.960. The magnetic powder has at its surface a phosphorus element of 0.10 to 050% by weight. This toner is suitable for use in an image forming apparatus provided with a developer carrier made of stainless steel, or an image forming apparatus provided with an amorphous silicon photosensitive material. This toner has high transfer efficiency and less fog, thereby enabling to maintain image density for a long period of time, and form high image-quality image.
摘要翻译： 本发明的磁性单组分调色剂至少含有粘合树脂和磁性粉末，体积平均粒径为6.0〜9.0μm，压缩率为15〜50％，平均圆度为0.950〜0.960。 磁性粉末的表面磷含量为0.10〜050重量％。 该调色剂适用于设置有由不锈钢制成的显影剂载体的图像形成装置或设置有非晶硅感光材料的图像形成装置。 该调色剂具有高转印效率和较少的雾度，从而能够长期保持图像浓度，并形成高图像质量的图像。
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公开(公告)号：US20060240348A1
公开(公告)日：2006-10-26
申请号：US11406655
申请日：2006-04-19
申请人： Hidekazu Tamura
发明人： Hidekazu Tamura
IPC分类号： G03G9/083
CPC分类号： G03G9/08797 , G03G9/0808 , G03G9/0819 , G03G9/0827 , G03G9/0835 , G03G9/0836 , G03G9/0837 , G03G9/08755 , G03G9/08795 , G03G9/09725
摘要： The present invention provides a magnetic monocomponent developer which can obtain a stable conveying performance for a long period and an image forming method which uses the developer. In a magnetic monocomponent developer which is used in a developing unit which includes a developing vessel which accommodates a magnetic monocomponent developer therein, a developer carrying body which carries the magnetic monocomponent developer and conveys the magnetic monocomponent developer to a developing region, and a developer layer thickness restricting member which restricts a layer thickness of the magnetic monocomponent developer, the magnetic monocomponent developer includes toner particles which contain at least a binder resin and magnetic powder, and also includes following constitutions (a) to (c). (a) an average particle size of the toner particles may being set to a value which falls within a range from 6 to 9 μm. (b) an average degree of circularity of the toner particles being set to a value which falls within a range from 0.950 to 0.960. (c) a content of the toner particles having a degree of circularity of below 0.850 being set to a value which falls within a range from 2.0 to 4.0 unit % with respect to a total quantity of the toner particles.
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公开(公告)号：US07400849B2
公开(公告)日：2008-07-15
申请号：US11165526
申请日：2005-06-23
申请人： Hidekazu Tamura
发明人： Hidekazu Tamura
IPC分类号： G03G15/09
CPC分类号： G03G9/0827 , G03G9/0819 , G03G9/0821 , G03G9/083 , G03G9/0834 , G03G9/0837 , G03G9/0838
摘要： A magnetic one-component toner of the invention contains at least a binding resin and a magnetic powder, and has a volume average particle size of 6.0 to 9.0 μm, a compressibility of 15 to 50%, and a mean roundness of 0.950 to 0.960. The magnetic powder has at its surface a phosphorus element of 0.10 to 0.50% by weight. This toner is suitable for use in an image forming apparatus provided with a developer carrier made of stainless steel, or an image forming apparatus provided with an amorphous silicon photosensitive material. This toner has high transfer efficiency and less fog, thereby enabling to maintain image density for a long period of time, and form high image-quality image.
摘要翻译： 本发明的磁性单组分调色剂至少含有粘合树脂和磁性粉末，体积平均粒径为6.0〜9.0μm，压缩率为15〜50％，平均圆度为0.950〜0.960。 磁性粉末的表面磷含量为0.10〜0.50重量％。 该调色剂适用于设置有由不锈钢制成的显影剂载体的图像形成装置或设置有非晶硅感光材料的图像形成装置。 该调色剂具有高转印效率和较少的雾度，从而能够长期保持图像浓度，并形成高图像质量的图像。
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公开(公告)号：US07539440B2
公开(公告)日：2009-05-26
申请号：US11406655
申请日：2006-04-19
申请人： Hidekazu Tamura
发明人： Hidekazu Tamura
IPC分类号： G03G9/083
CPC分类号： G03G9/08797 , G03G9/0808 , G03G9/0819 , G03G9/0827 , G03G9/0835 , G03G9/0836 , G03G9/0837 , G03G9/08755 , G03G9/08795 , G03G9/09725
摘要： The present invention provides a magnetic monocomponent developer which can obtain a stable conveying performance for a long period and an image forming method which uses the developer. In a magnetic monocomponent developer which is used in a developing unit which includes a developing vessel which accommodates a magnetic monocomponent developer therein, a developer carrying body which carries the magnetic monocomponent developer and conveys the magnetic monocomponent developer to a developing region, and a developer layer thickness restricting member which restricts a layer thickness of the magnetic monocomponent developer, the magnetic monocomponent developer includes toner particles which contain at least a binder resin and magnetic powder, and also includes following constitutions (a) to (c). (a) an average particle size of the toner particles may being set to a value which falls within a range from 6 to 9 μm. (b) an average degree of circularity of the toner particles being set to a value which falls within a range from 0.950 to 0.960. (c) a content of the toner particles having a degree of circularity of below 0.850 being set to a value which falls within a range from 2.0 to 4.0 unit % with respect to a total quantity of the toner particles.
摘要翻译： 本发明提供一种长时间获得稳定的输送性能的磁性单组分显影剂和使用显影剂的图像形成方法。 在用于显影单元的磁性单组分显影剂中，该显影单元包括容纳磁性单组分显影剂的显影容器，载有磁性单组分显影剂并将该磁性单组分显影剂输送到显影区的显影剂承载体和显影剂层 限制磁性单组分显影剂的层厚度的厚度限制构件，磁性单组分显影剂包括至少含有粘合剂树脂和磁性粉末的调色剂颗粒，并且还包括以下构成（a）至（c）。 （a）调色剂颗粒的平均粒径可以设定在6〜9μm的范围内。 （b）将调色剂颗粒的平均圆度设定在0.950〜0.960的范围内。 （c）圆形度低于0.850的调色剂颗粒的含量相对于调色剂颗粒的总量设定在2.0至4.0单位％的范围内。
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公开(公告)号：US06760560B2
公开(公告)日：2004-07-06
申请号：US10156830
申请日：2002-05-30
申请人： Takashi Nagai , Hidekazu Tamura , Seiji Kikushima , Toru Takatsuna , Hiroko Higuchi , Hiroaki Moriyama , Kouzou Teramoto , Noriya Okamoto
发明人： Takashi Nagai , Hidekazu Tamura , Seiji Kikushima , Toru Takatsuna , Hiroko Higuchi , Hiroaki Moriyama , Kouzou Teramoto , Noriya Okamoto
IPC分类号： G03G1509
CPC分类号： G03G15/0928
摘要： A developing apparatus has a developer supporting member 41 with a surface roughness RZ in the range from 3.0 to 5.5 &mgr;m and a one-component developer T with a bulk density in the range from 0.35 to 0.55 g/ml, and an image is developed by forming a layer of the developer T on the developer supporting member 41. This makes it possible to form a thin toner layer stably despite changes in ambient conditions, and to prevent low image density and fogging. The absolute value of the amount of electric charge with which the developer T is charged is preferably in the range from 3.0 to 10.0 &mgr;C/g. The developer supporting member 41 is made preferably of stainless steel.
摘要翻译： 显影装置具有表面粗糙度RZ在3.0至5.5μm的显影剂支撑构件41和堆积密度在0.35至0.55g / ml范围内的单组分显影剂T，并且图像由 在显影剂支撑构件41上形成显影剂T的层。这使得可以尽管环境条件的变化稳定地形成薄的调色剂层，并且防止低图像浓度和起雾。 显影剂T的充电量的绝对值优选在3.0〜10.0μC/ g的范围内。 显影剂支撑构件41优选由不锈钢制成。
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