Magnetic particles for magnetic toner
    3.
    发明授权
    Magnetic particles for magnetic toner 失效
    用于磁性调色剂的磁性颗粒

    公开(公告)号:US5328793A

    公开(公告)日:1994-07-12

    申请号:US959907

    申请日:1992-10-13

    IPC分类号: G03G9/083 G03G9/087

    摘要: Disclosed herein are magnetic particles for a magnetic toner containing a low-molecular binder resin having a weight-average molecular weight of not more than 150,000, said magnetic particles comprising particulate magnetic particles containing iron as the main ingredient and having an oil absorption of not more than 24 ml/100 g and a degree of compaction of not less than 56, and a magnetic toner containing the said magnetic particles.

    摘要翻译: 本文公开了一种含有重均分子量不超过15万的低分子粘合剂树脂的磁性调色剂的磁性颗粒,所述磁性颗粒包含含有铁作为主要成分的颗粒状磁性颗粒,并且吸油量不大 超过24ml / 100g,压实度不小于56,以及含有所述磁性颗粒的磁性调色剂。

    Magnetic particles for magentic toner and process for producing the same
    10.
    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。