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    • 4. 发明授权
    • Electrophotographic apparatus having cleaning width larger than charging
width
    • 扫描宽度大于充电宽度的电子照相设备
    • US5430527A
    • 1995-07-04
    • US263394
    • 1994-06-21
    • Akio MaruyamaJunichi KishiHiroyuki OhmoriMasami Okunuki
    • Akio MaruyamaJunichi KishiHiroyuki OhmoriMasami Okunuki
    • G03G5/047G03G15/02G03G21/00G03G5/00
    • G03G21/0005G03G15/0216G03G5/047G03G2215/025G03G2221/0015
    • An image forming apparatus has a photosensitive member, a charging device, an image exposure device for exposing the photosensitive member to form a latent image, a developing device for developing the latent image with a toner to form a transferable toner image on the surface of the photosensitive member, a transfer device for transferring the toner image to a transfer material, and a cleaning device for removing a residual toner; the charging device, image exposure device, developing device, transfer device and cleaning device being disposed in the named order along the moving direction of the photosensitive member. The charging device includes an electroconductive member which directly contacts the photosensitive member surface to charge the photosensitive member surface. The electroconductive member forms a nip width with the photosensitive member of at least 0.5 mm and a load per unit contact area between the electroconductive member and photosensitive member is between 0.5-30 g/mm.sup.2. With respect to the longitudinal direction of the photosensitive member, the width of the photosensitive member surface cleaned by the cleaning device is equal to or greater than the width of the photosensitive member surface contacting the electroconductive member.
    • 图像形成装置具有感光构件,充电装置,用于曝光感光构件以形成潜像的图像曝光装置,用调色剂显影潜像的显影装置,以在该表面上形成可转印调色剂图像 感光构件,用于将调色剂图像转印到转印材料的转印装置,以及用于除去残留调色剂的清洁装置; 充电装置,图像曝光装置,显影装置,转印装置和清洁装置沿着感光构件的移动方向按照所述顺序设置。 充电装置包括直接接触感光构件表面以对感光构件表面充电的导电构件。 导电构件与感光构件形成至少0.5mm的压区宽度,并且导电构件和感光构件之间的每单位接触面积的负载为0.5-30g / mm 2。 关于感光构件的纵向方向,由清洁装置清洁的感光构件表面的宽度等于或大于与导电构件接触的感光构件表面的宽度。