公开(公告)号：WO03054633A3

公开(公告)日：2003-10-16

申请号：PCT/KR0202405

申请日：2002-12-20

Applicant: LG CHEMICAL LTD ,  LIM IN-HEE ,  LEE CHANG-SOON ,  LEE WON-SUP

Inventor： LIM IN-HEE ,  LEE CHANG-SOON ,  LEE WON-SUP

IPC: G03G9/08 ,  G03G9/083 ,  G03G9/097

CPC classification number: G03G9/0834 ,  G03G9/0819 ,  G03G9/0833 ,  G03G9/0835 ,  G03G9/0836 ,  G03G9/0837 ,  G03G9/09708 ,  G03G9/09716 ,  G03G9/09725

Abstract: The present invention relates to a magnetic toner composition, and more particularly to a magnetic toner composition having an improved chargeability and excellent uniform chargeability, and that is capable of reducing a difference in electrostatic charge between a toner remaining in a cartridge or in a developing unit and that of a newly supplied toner. A magnetic toner composition of the present invention comprises magnetic toner particulate comprising a binder resin and a magnetic substance, a conductive fine powder having a specific surface area of 30 to 300 m /g, a hydrophobic silica having a specific surface area of 100 to 240m /g, and an inorganic fine powder having an average diameter of 0.1 to 4.Oµm.

Abstract translation: 本发明涉及一种磁性调色剂组合物，更具体地说，涉及具有改善的带电性和优异的均匀带电性的磁性调色剂组合物，并且能够减少残留在盒中或显影单元中的调色剂之间的静电电荷的差异 和新提供的调色剂。 本发明的磁性调色剂组合物包括含有粘合剂树脂和磁性物质的磁性调色剂颗粒，比表面积为30-300m 2 / g的导电细粉末，比表面积为 100〜240m 2 / g，平均粒径为0.1〜4.Oμm的无机细粉末。