公开(公告)号：US20130157186A1

公开(公告)日：2013-06-20

申请号：US13718301

申请日：2012-12-18

Applicant: Samsung Electronics Co., Ltd.

Inventor： Manabu ONO ,  Osamu Ieda ,  Takahiro Ishii ,  Hiroaki Yoshida ,  Akira Kambayashi ,  Hiroko Endo ,  Motomi Noguchi

IPC: G03G9/107 ,  G03G13/08

Abstract: A magnetic carrier having excellent charge-imparting ability includes a magnetic particle and a coating layer disposed on a surface of the magnetic particle. The coating layer includes at least a resin component including an acrylic polymer and hydrotalcite dispersed in a form of particles having a predetermined number-average particle. A content of the hydrotalcite CH (parts by weight) is in a range of approximately 3 or more to approximately 30 parts by weight or less based on 100 parts by weight of the resin component. A content of the acrylic monomer unit CA (mol %) with respect to a total monomer unit included in the resin component and the content of the hydrotalcite CH satisfy the following relationship: 78≦CH×0.38+CA≦99.

Abstract translation: 具有优异的电荷赋予能力的磁性载体包括磁性颗粒和设置在磁性颗粒表面上的涂层。 涂层至少包括一种包含分散在具有预定数均粒子的颗粒形式的丙烯酸聚合物和水滑石的树脂组分。 基于100重量份的树脂成分，水滑石CH（重量份）的含量在约3以上至约30重量份以下的范围内。 丙烯酸类单体单元CA（摩尔％）相对于包含在树脂成分中的总单体单元的含量和水滑石CH的含量满足以下关系：78 @ CH×0.38 + CA @ 99。