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    • 71. 发明授权
    • Image forming apparatus with improved capabilities for toner supply
    • 具有改善墨粉供应能力的成像设备
    • US06775503B2
    • 2004-08-10
    • US10133484
    • 2002-04-29
    • Yoshio HattoriTakaaki YanagisawaKazuhisa Sudo
    • Yoshio HattoriTakaaki YanagisawaKazuhisa Sudo
    • G03G1508
    • G03G15/0879G03G15/0855G03G15/0865
    • A toner supply unit powder pump of an electrophotographic image forming apparatus is driven by an exclusive motor independently of a main motor driving major parts of the image forming apparatus. Thereby, the toner supply unit can implement responsive supply of toner unaffected by operation mode changes with a simpler construction. A toner supply system can use plural powder pumps for plural color developing stations. By considering distance and elevation of toner transport paths to respective stations, appropriate pump revolutions can be determined for respective stations, to achieve desirable toner transport amounts to respective stations in relatively short time with a simpler construction supply unit. A method precisely controls toner transport amounts by intermittently driving the powder pump with an arbitrary unit driving time. When the arbitrary unit driving time is changed to another unit driving time, the pump is driven transiently with the still another unit driving time.
    • 电子照相图像形成装置的调色剂供应单元粉末泵由专用电机驱动,独立于驱动图像形成装置的主要部分的主电机。 因此,调色剂供应单元可以以更简单的结构实现不受操作模式改变影响的响应的调色剂供应。 调色剂供应系统可以使用多个粉末泵用于多个彩色显影站。 通过考虑到相应站的调色剂输送路径的距离和高度,可以针对各个站确定适当的泵转数,以通过更简单的施工供应单元在相对短的时间内实现对各个站的期望的调色剂输送量。 一种方法通过以任意的单位驱动时间间歇地驱动粉末泵来精确地控制调色剂输送量。 当任意单元驱动时间改变为另一个单元驱动时间时,泵随着另一个单元驱动时间瞬时地被驱动。