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2. 发明授权

US5845176A Process unit having mounting guides and protective covers 失效
标题翻译：处理单元具有安装导轨和保护罩
公开(公告)号：US5845176A
公开(公告)日：1998-12-01
申请号：US510373
申请日：1995-08-02
申请人： Narutaka Yoshida , Yuzuru Sugimoto , Hiroshi Mizuno
发明人： Narutaka Yoshida , Yuzuru Sugimoto , Hiroshi Mizuno
IPC分类号： G03G15/08 , G03G21/16 , G03G21/18
CPC分类号： G03G21/1832 , G03G15/0896 , G03G21/1623 , G03G21/1638 , G03G21/1853 , G03G2221/1609 , G03G2221/163 , G03G2221/1687
摘要： A fixed frame includes a photosensitive drum and a developing unit, and a movable frame is openable with respect to the fixed frame. The developing unit, which has two pairs of protrusions thereon, is detachably mounted to the fixed frame by engaging the protrusions with two pairs of guides provided on the fixed frame. One pair of guides includes a portion for momentarily catching one pair of the protrusions as the developing unit is being mounted to the apparatus, and each of the other pair of guides includes a inclined portion having the shape of an arc centered on the momentarily catching portion, whereby an impact to the developing unit is alleviated. The developing unit has a shutter which moves to a position for covering a peripheral surface of a developing sleeve when the developing unit is being dismounted, and which retracts from the developing sleeve covering position and moves to a position for covering the photosensitive drum when the developing unit is being mounted. The movable frame accommodates a fixing device to move the fixing device rearwardly together with the movable frame when the movable frame is opened, whereby the danger of an operator touching the fixing device when the apparatus is opened is reduced.
摘要翻译：固定框架包括感光鼓和显影单元，并且可移动框架相对于固定框架是可打开的。在其上具有两对突起的显影单元通过与设置在固定框架上的两对导轨接合突起而可拆卸地安装到固定框架。一对引导件包括当显影单元被安装到设备上时暂时捕获一对突起的部分，另一对引导件中的每一个引导件包括倾斜部分，该倾斜部分具有以瞬间捕获部分为中心的圆弧形状，从而减轻对显影单元的影响。显影单元具有挡板，当所述显影单元被拆卸时，所述挡板移动到用于覆盖显影套筒的外周表面的位置，并且当所述显影单元被显影时从所述显影套筒覆盖位置缩回并移动到用于覆盖所述感光鼓的位置装置正在安装。当可动框架打开时，可动框架容纳固定装置与可动框架一起向后移动固定装置，从而减少了当打开装置时操作人员接触定影装置的危险。

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