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发明公开
CN1841219A 双组分显影剂用磁性调色剂及使用该显影剂的成像方法 无效 - 撤回

双组分显影剂用磁性调色剂及使用该显影剂的成像方法
摘要：
本发明的目的是提供一种磁性调色剂，利用该磁性调色剂能够长期防止调色剂飞散、调色剂消耗到载体、通过磁性刷在感光体转筒上形成刮擦条纹，并且能够长期维持良好的图像特征(在图像密度和背景雾化方面)；以及提供一种使用该磁性调色剂的成像方法。以及披露了制备以下的双组分显影剂，所述双组分显影剂包括载体和调色剂，所述调色剂至少在粘合剂树脂中含有磁性颗粒，其中所述磁性颗粒是以多面体形为基础的，所述多面体颗粒的顶点和棱是曲面的，所述多面体形在其投影图像外周上具有能够被看作直线的部分，且所述调色剂的饱和磁化强度在79.6kA/m的磁场下为4.0－15.0Am2/kg，并且使调色剂保持元件(载体)对着潜像保持元件，所述调色剂保持元件至少承载有注入电荷的所述磁性调色剂，并用所述磁性调色剂显影所述潜像保持元件上的静电潜像。
摘要（英）：

The object is to provide a magnetic toner with which toner scattering, toner spent to carrier, development of scratch streaks by the magnetic brush on the photoreceptor drum can be prevented for a prolonged period and a good image characteristic (in image density and background fogging) can be maintained for a prolonged period, and an image forming method using the magnetic toner. A two-component developer comprising carriers and toner which contains magnetic particle at least in a binder resin thereof, the magnetic particle being of basically polyhedral shaped shape, vertexes and edges of said polyhedral shape being curved surfaces, said shape having peripheral parts taken as straight lines in a projected image thereof, saturation magnetization of said toner in a magnetic field of 79.6 kA/m being 4.0 to 15.0 Am2/kg, is prepared, and the toner retaining members (carriers) bearing at least said magnetic toner to which electric charge is injected are allowed to face a latent image retaining member and an electrostatic latent image on said latent image retaining member is developed with said magnetic toner.

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