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1.发明公开Method for manufacturing carrier core particles for electrophotographic developer, carrier core particles for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer 审中-公开一种用于生产载体芯材粒子的电子照相显影剂的载体芯颗粒的电子照相显影剂，载体的电子照相显影剂和电子照相显影剂过程
公开(公告)号：EP2769965A2
公开(公告)日：2014-08-27
申请号：EP14156647.1
申请日：2014-02-25
发明人： Kawauchi, Takeshi , Ogawa, Sho , Seki, Haruka
CPC分类号： G03G9/107 , C01G49/0072 , C01P2002/50 , C01P2002/52 , C01P2004/32 , C01P2006/12 , C01P2006/42 , C04B35/26 , C04B35/2633 , C04B35/62695 , C04B2235/3208 , C04B2235/3213 , C04B2235/3262 , G03G9/10 , G03G9/1132
摘要： Provided is a method for manufacturing carrier core particles for electrophotographic developer capable of stably maintaining high chargeability over a long time. The method for manufacturing carrier core particles includes a granulation step of granulating a mixture of raw materials containing manganese, iron, strontium, and calcium and a firing step of firing the mixture granulated in the granulation step. The firing step includes a heating process of heating the granular mixture with an increase in temperature to a predetermined degree and a cooling process of cooling the granular mixture, after the heating process, in an atmosphere with an oxygen concentration ranging from 5000 ppm to 20000 ppm. The molar ratio of the sum of strontium and calcium to the sum of the manganese, iron, strontium, and calcium is 0.0026 to 0.013.
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2.发明公开Electrophotographic developer carrier core material, electrophotographic developer carrier, methods of manufacturing the same, and electrophotographic developer 有权载体芯材的电子照相显影剂，电子照相显影剂用载体，其制备方法和电子照相显影剂的处理
公开(公告)号：EP2439594A1
公开(公告)日：2012-04-11
申请号：EP12000034.4
申请日：2006-09-25
发明人： Nakao, Ryusuke , Kawauchi, Takeshi
CPC分类号： G03G9/1075 , G03G9/10 , G03G9/1136
摘要： The present invention provides a carrier core material for use in the production of an electrophotographic developer which, even when applied, for example, to MFPs (multifunction printers), can realize stable, high-quality and high-speed development, and has a prolonged replacing life of magnetic carriers, and a method of manufacturing the same, a magnetic carrier including the carrier core material, and an electrophotographic developer manufactured from the magnetic carrier. An electrophotographic development carrier is prepared by adding resin particles, a binder, a dispersant, a wetting agent, and water to a raw material powder, wet pulverizing the mixture, drying the pulverized product to give granulated powder, calcinatng the granulated powder, and then sintering the granulated powder to prepare a carrier core material having an internally hollow structure, and coating the carrier core material with a resin. An electrophotographic developer is manufactured by mixing the electrophotographic development carrier with a toner.
摘要翻译： 本发明提供的载体芯材料，在生产的电子照相显影剂其中，即使当应用于例如，至的MFP（多功能打印机），可实现稳定的高品质和高速发展的用途，并且具有延长的 替换磁性载体的使用寿命，和制造方法，磁性载体包括载体芯材的方法，以及向电从磁性载体制造的照相显影剂。 然后在电子照相显影载体是通过将树脂颗粒，粘合剂，分散剂，湿润剂和水到原料粉末制备，湿法粉碎该混合物，干燥所述粉碎的产物，得到粒化粉末，calcinatng的粒化粉末，以及 烧结所述造粒粉末，以制备具有在内部中空结构的载体芯材，和用树脂涂覆载体芯材料。 一种电子照相显影剂通过电子照相显影载体与调色剂混合来制造。
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3.发明公开Method for manufacturing carrier core particles for electrophotographic developer, carrier core particles for electrophotographic developer, carrier for electrophotographic developer, and electrophotographic developer 审中-公开一种用于生产载体芯材粒子的电子照相显影剂的载体芯颗粒的电子照相显影剂，载体的电子照相显影剂和电子照相显影剂过程
公开(公告)号：EP2769965A3
公开(公告)日：2014-10-29
申请号：EP14156647.1
申请日：2014-02-25
发明人： Kawauchi, Takeshi , Ogawa, Sho , Seki, Haruka
CPC分类号： G03G9/107 , C01G49/0072 , C01P2002/50 , C01P2002/52 , C01P2004/32 , C01P2006/12 , C01P2006/42 , C04B35/26 , C04B35/2633 , C04B35/62695 , C04B2235/3208 , C04B2235/3213 , C04B2235/3262 , G03G9/10 , G03G9/1132
摘要： Provided is a method for manufacturing carrier core particles for electrophotographic developer capable of stably maintaining high chargeability over a long time. The method for manufacturing carrier core particles includes a granulation step of granulating a mixture of raw materials containing manganese, iron, strontium, and calcium and a firing step of firing the mixture granulated in the granulation step. The firing step includes a heating process of heating the granular mixture with an increase in temperature to a predetermined degree and a cooling process of cooling the granular mixture, after the heating process, in an atmosphere with an oxygen concentration ranging from 5000 ppm to 20000 ppm. The molar ratio of the sum of strontium and calcium to the sum of the manganese, iron, strontium, and calcium is 0.0026 to 0.013.
摘要翻译： 提供了一种用于制造载体芯颗粒用于电照相显影剂能够在长时间内稳定地保持高带电的方法。 用于制造载体芯颗粒的方法包括粒化含有锰，铁，锶和钙的原料的混合物的造粒工序和烧制在造粒步骤造粒该混合物的烧成工序。 烧制步骤包括粒状混合物与在到预定程度的温度上升并冷却该粒状混合物的冷却过程在大气与氧浓度范围为5000〜20000ppm的加热，加热过程后，在加热过程 ， 锶和钙的锰，铁，锶和钙的总和之和的摩尔比为0.0026到0.013。
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4.发明授权Electrophotographic developer carrier core material, electrophotographic developer carrier, methods of manufacturing the same, and electrophotographic developer 有权载体芯材的电子照相显影剂，电子照相显影剂用载体，其制备方法和电子照相显影剂的处理
公开(公告)号：EP2439594B1
公开(公告)日：2013-07-24
申请号：EP12000034.4
申请日：2006-09-25
发明人： Nakao, Ryusuke , Kawauchi, Takeshi
CPC分类号： G03G9/1075 , G03G9/10 , G03G9/1136
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