Magnetic particles for magentic toner and process for producing the same
    7.
    发明授权
    Magnetic particles for magentic toner and process for producing the same 失效
    用于磁性调色剂的磁性颗粒及其制备方法

    公开(公告)号:US5843610A

    公开(公告)日:1998-12-01

    申请号:US955104

    申请日:1997-10-21

    IPC分类号: G03G9/083

    摘要: A magnetic toner containing 100 parts by weight of magnetic Fe.sup.2+ -containing iron oxide particles having an average particle size of 0.05 to 0.30 .mu.m, containing not less than 0.9 atm % and less than 1.7 atm % of silicon, calculated as Si, based on Fe, having a substantially cubic shape each ridge of which has a curved surface, and having a ratio .phi. represented by the following formula of more than 1.0 and less than 1.4: .phi.=l/w wherein l represents an average maximum length of said Fe.sup.2+ -containing particles and w represents an average minimum length of said Fe.sup.2+ -containing particles, and 10 to 900 parts by weight of a toner resin.

    摘要翻译: 含有100重量份平均粒径为0.05-0.30μm的含Fe 2+的含铁氧化物颗粒的磁性调色剂,其含有不低于0.9atm%且小于1.7atm%的硅,以Si计,基于 Fe,具有基本上立方体形状,其每个脊具有弯曲表面,并且具有由以下公式表示的大于1.0且小于1.4的比率phi = 1 / w,其中l表示所述Fe 2+的平均最大长度, 并且w表示所述含Fe 2+的颗粒的平均最小长度,和10至900重量份的调色剂树脂。