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    • 22. 发明授权
    • Image forming apparatus
    • 图像形成装置
    • US5008711A
    • 1991-04-16
    • US183707
    • 1988-04-19
    • Koji SakamotoMisao TanzawaNobuo IwataHisao MurayamaSusumu TakahashiKenya Komada
    • Koji SakamotoMisao TanzawaNobuo IwataHisao MurayamaSusumu TakahashiKenya Komada
    • G03G21/18
    • G03G21/1875G03G15/75G03G21/1628G03G21/1647G03G21/1671G03G2221/1606G03G2221/1654G03G2221/1663G03G2221/1687G03G2221/1869
    • An image forming apparatus of the type including a plurality of process means for developing an electrostatic latent image provided on an image carrier to produce a visible image, transferring the visible image to a transfer material, and cleaning the image carrier after the image transfer. The image carrier and at least one image forming unit are individually removably mounted on a body of the apparatus. A first and a second sensor are provided for sensing, respectively, the end of the life of the image forming unit and that of the image carrier. Even when the end of the life of the image carrier is sensed, an indication for urging a person to replace the image forming unit being used is not produced if the life of the image forming unit has not expired, allowing the apparatus to be continuously used. It is not until the end of the life of the image forming unit is sensed next that an indication for urging a person to replace both of the image carrier and the image forming unit is produced.
    • 一种图像形成装置,包括多个处理装置,用于显影设置在图像载体上的静电潜像以产生可见图像,将可见图像转印到转印材料上,以及在图像转印之后清洁图像载体。 图像载体和至少一个图像形成单元可独立地可拆卸地安装在装置的主体上。 提供第一和第二传感器,用于分别感测图像形成单元和图像载体的寿命的结束。 即使感测到图像载体的寿命的结束,如果图像形成单元的寿命没有期满,则不产生用于促使人更换所使用的图像形成单元的指示,从而允许该装置被连续使用 。 直到感觉到图像形成单元的寿命结束之后才产生用于促使人替换图像载体和图像形成单元两者的指示。