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    • 7. 发明授权
    • Laser scanner protecting mechanism
    • 激光扫描仪保护机制
    • US5157416A
    • 1992-10-20
    • US726991
    • 1991-07-08
    • Naohisa KinoshitaHiroyuki Kashima
    • Naohisa KinoshitaHiroyuki Kashima
    • G02B26/10B41J2/44B41J29/12G03G15/00G03G15/04
    • B41J29/12
    • A laser scanner protecting mechanism is provided for the laser scanning unit of a laser printer having an upper body and a lower body which divide, the sheet transport path defining a boundary therebetween. The printer permits the upper body to be pivoted away from the lower body to expose inner workings of the printer and to provide access to a process cartridge that is removably mounted into the upper body. The laser scanner unit, mounted in the upper body above the process cartridge, is protected from exposure to dust and solid materials in the air or the inadvertent contact of an operator's hand through an exposure opening by a cover adapted to be moved between a first position for covering the exposure opening of the laser scanner unit when the process cartridge is removed and a second position retracted from the first position when the process cartridge is mounted.
    • 为激光打印机的激光扫描单元设置有激光扫描器保护机构,该激光打印机具有上部主体和下部主体,所述上部主体和下部主体分隔,所述片材传送路径在其间限定了边界。 打印机允许上主体从下体枢转以暴露打印机的内部工作,并且提供对可移除地安装到上身中的处理盒的通路。 安装在处理盒上方的上部主体中的激光扫描器单元被保护免受空气中的灰尘和固体材料的暴露或操作者的手的无意接触,该操作者的手通过曝光开口被适于在第一位置 用于当处理盒被移除时覆盖激光扫描器单元的曝光开口,并且当安装处理盒时从第一位置退回第二位置。