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    • 1. 发明授权
    • Image drum cartridge and developing unit having a movable developing roller
    • 图像鼓盒和具有可移动显影辊的显影单元
    • US06882811B2
    • 2005-04-19
    • US10373082
    • 2003-02-26
    • Masahiro FukudaShigeki NakajimaAtsushi Kobayashi
    • Masahiro FukudaShigeki NakajimaAtsushi Kobayashi
    • G03G15/08G03G21/18
    • G03G21/1857G03G15/0812
    • An image drum cartridge includes supporting walls, on which a photoconductive drum rotates, a position selector, a developing roller that rotates relative to the position selector, a developing blade that forms a thin layer of toner on the developing roller, and a slideable member that urges the developing blade against the developing roller. The position selector is mounted on the supporting walls and movable between first and second positions. The position selector causes the developing roller to move to an operative position where a nip is formed between the photoconductive drum and the developing roller. The position selector causes the developing roller to move to an inoperative position where no nip is formed between the photoconductive drum and the developing roller. The developing roller has a first rotational axis and the position selector has a second rotational axis away from the first rotational axis.
    • 感光鼓包括支撑壁,感光鼓旋转在其上,位置选择器,相对于位置选择器旋转的显影辊,在显影辊上形成调色剂薄层的显影刮板和可滑动构件, 将显影刮板推向显影辊。 位置选择器安装在支撑壁上并可在第一和第二位置之间移动。 位置选择器使得显影辊移动到在感光鼓和显影辊之间形成辊隙的操作位置。 位置选择器使得显影辊移动到在感光鼓和显影辊之间没有形成压区的非工作位置。 显影辊具有第一旋转轴线,并且位置选择器具有远离第一旋转轴线的第二旋转轴线。