公开(公告)号：US09201329B2

公开(公告)日：2015-12-01

申请号：US13738324

申请日：2013-01-10

Applicant: Powdertech Co., Ltd.

Inventor： Koji Aga ,  Makoto Ishikawa ,  Masashi Aoki

IPC: G03G9/10 ,  G03G9/107

CPC classification number: G03G9/1075 ,  G03G9/107

Abstract: A porous ferrite core material for an electrophotographic developer wherein the apparent density thereof is 1.5 to 1.9 g/cm3, the shape factor SF-2 thereof is 101 to 110 and the magnetization as measured with a VSM at 1K·1000/4π·A/m is 40 to 60 Am2/kg, a resin-coated ferrite carrier for an electrophotographic developer obtained by coating the surface of the porous ferrite core material with a resin, and an electrophotographic developer using the ferrite carrier.

Abstract translation: 一种用于电子照相显影剂的多孔铁氧体芯材料，其表观密度为1.5至1.9g / cm 3，其形状系数SF-2为101至110，并且以1K·1000/4＆amp; / m为40〜60Am 2 / kg，通过用树脂涂布多孔铁素体芯材的表面而得到的电子照相显影剂用树脂被覆铁氧体载体和使用该铁氧体载体的电子照相显影剂。