公开(公告)号：US5953563A

公开(公告)日：1999-09-14

申请号：US895373

申请日：1997-07-16

申请人： Jun Yamaguchi ,  Yoshiaki Sanada ,  Yoshiki Itikawa

发明人： Jun Yamaguchi ,  Yoshiaki Sanada ,  Yoshiki Itikawa

IPC分类号： G03G15/08 ,  G03G15/09 ,  G03G15/04

CPC分类号： G03G15/0898 ,  G03G15/09

摘要： Vents are formed on a developer flow regulating plate inside a casing so as to reduce a pressure in a first space which increases as a developer holder rotates. Further, vents for connecting a vacuum space formed in front of a developer layer thickness regulating section for regulating a thickness of a developer layer formed on the surface of the developer holder and the outside air are formed. The vents thus formed for connecting the vacuum space and the outside air take in the outside air along the front face of the developer layer regulating section so as to increase the negative pressure in the vacuum space. A shape of a lower edge portion of an opening section formed on the casing is varied in a longitudinal direction so as to optimize an effect of suppressing a scattering of a developer. Furthermore, a rotation start timing of an agitating section for agitating the developer to be supplied to the developer holder is delayed from a rotation start timing of the developer holder. The described features permit the scattering of the developer to be suppressed.

摘要翻译： 通风口形成在壳体内的显影剂流量调节板上，以便减小随着显影剂保持器旋转而增加的第一空间中的压力。 此外，形成用于连接形成在显影剂层厚度调节部分前面的真空空间的通风口，用于调节形成在显影剂保持器表面上的显影剂层的厚度和外部空气。 这样形成的用于连接真空空间和外部空气的通风口沿着显影剂层调节部分的前表面吸入外部空气，以增加真空空间中的负压。 形成在壳体上的开口部分的下边缘部分的形状在纵向方向上变化，以便优化抑制显影剂飞散的效果。 此外，用于搅拌要供应到显影剂保持器的显影剂的搅拌部分的旋转开始正时从显影剂保持器的旋转开始时刻延迟。 所描述的特征允许显影剂的散射被抑制。