公开(公告)号：US20120076551A1

公开(公告)日：2012-03-29

申请号：US13313430

申请日：2011-12-07

申请人： Kanao KAYAMOTO ,  Hironori HOJO ,  Toshio HONJO

发明人： Kanao KAYAMOTO ,  Hironori HOJO ,  Toshio HONJO

IPC分类号： G03G15/08

CPC分类号： G03G9/107 ,  G03G9/113

摘要： An object of the present invention is to provide a resin-coated ferrite carrier comprising a carrier core material having a small particle size, a high sphericity and surface uniformity, and a low standard deviation, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated ferrite carrier and having a high image quality and excellent durability. For achieving the above object, there is provided a resin-coated carrier for an electrophotographic developer characterized by comprising spherical ferrite particles having an average particle size of 20 to 50 μm, a surface uniformity of 90% or more, an average sphericity of 1 to 1.3 and a sphericity standard deviation of 0.15 or less, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated carrier.

摘要翻译： 本发明的目的是提供一种树脂涂覆的铁氧体载体，其包含具有小粒径，高球形度和表面均匀性以及低标准偏差的载体芯材料，制备载体的方法和电子照相显影剂 包括树脂涂覆的铁氧体载体，并且具有高图像质量和优异的耐久性。 为了实现上述目的，提供了一种用于电子照相显影剂的树脂涂覆载体，其特征在于包括平均粒径为20至50μm的球形铁氧体颗粒，90％以上的表面均匀性，平均球形度为1至 1.3，球形度标准偏差为0.15以下，制造载体的方法和包含树脂被覆载体的电子照相显影剂。

公开(公告)号：US08092971B2

公开(公告)日：2012-01-10

申请号：US10584066

申请日：2004-11-25

申请人： Kanao Kayamoto ,  Hironori Hojo ,  Toshio Honjo

发明人： Kanao Kayamoto ,  Hironori Hojo ,  Toshio Honjo

IPC分类号： G03G9/113

CPC分类号： G03G9/107 ,  G03G9/113

摘要： An object of the present invention is to provide a resin-coated ferrite carrier comprising a carrier core material having a small particle size, a high sphericity and surface uniformity, and a low standard deviation, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated ferrite carrier and having a high image quality and excellent durability. For achieving the above object, there is provided a resin-coated carrier for an electrophotographic developer characterized by comprising spherical ferrite particles having an average particle size of 20 to 50 μm, a surface uniformity of 90% or more, an average sphericity of 1 to 1.3 and a sphericity standard deviation of 0.15 or less, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated carrier.

摘要翻译： 本发明的目的是提供一种树脂涂覆的铁氧体载体，其包含具有小粒径，高球形度和表面均匀性以及低标准偏差的载体芯材料，制备载体的方法和电子照相显影剂 包括树脂涂覆的铁氧体载体，并且具有高图像质量和优异的耐久性。 为了实现上述目的，提供了一种用于电子照相显影剂的树脂涂覆载体，其特征在于包括平均粒径为20至50μm的球形铁氧体颗粒，90％以上的表面均匀性，平均球形度为1至 1.3，球形度标准偏差为0.15以下，制造载体的方法和包含树脂被覆载体的电子照相显影剂。

公开(公告)号：US20070154833A1

公开(公告)日：2007-07-05

申请号：US10584066

申请日：2004-11-25

申请人： Kanao Kayamoto ,  Hironori Hojo ,  Toshio Honjo

发明人： Kanao Kayamoto ,  Hironori Hojo ,  Toshio Honjo

IPC分类号： G03G9/113

CPC分类号： G03G9/107 ,  G03G9/113

摘要： An object of the present invention is to provide a resin-coated ferrite carrier comprising a carrier core material having a small particle size, a high sphericity and surface uniformity, and a low standard deviation, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated ferrite carrier and having a high image quality and excellent durability. For achieving the above object, there is provided a resin-coated carrier for an electrophotographic developer characterized by comprising spherical ferrite particles having an average particle size of 20 to 50 μm, a surface uniformity of 90% or more, an average sphericity of 1 to 1.3 and a sphericity standard deviation of 0.15 or less, a process for producing the carrier, and an electrophotographic developer comprising the resin-coated carrier.

摘要翻译： 本发明的目的是提供一种树脂涂覆的铁氧体载体，其包含具有小粒径，高球形度和表面均匀性以及低标准偏差的载体芯材料，制备载体的方法和电子照相显影剂 包括树脂涂覆的铁氧体载体，并且具有高图像质量和优异的耐久性。 为了实现上述目的，提供了一种用于电子照相显影剂的树脂涂覆载体，其特征在于包括平均粒径为20至50μm的球形铁氧体颗粒，90％以上的表面均匀性，平均球形度为1至 1.3，球形度标准偏差为0.15以下，制造载体的方法和包含树脂被覆载体的电子照相显影剂。