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    • 9. 发明授权
    • Image forming apparatus having a diamond-like structure surface protection layer on a photoconductive layer
    • 在光电导层上具有菱形结构表面保护层的图像形成装置
    • US06625409B2
    • 2003-09-23
    • US10279901
    • 2002-10-25
    • Masahiko ShakutoKei YasutomiHirokatsu SuzukiNobutaka TakeuchiToshihiko Baba
    • Masahiko ShakutoKei YasutomiHirokatsu SuzukiNobutaka TakeuchiToshihiko Baba
    • G03G1500
    • G03G13/025G03G2215/022
    • An image forming apparatus including an image carrier having a conductive support, at least a photoconductive layer formed on the conductive support, and a surface protection layer formed on the photoconductive layer and including a charge injection layer. Also included is a charging member for charging the image carrier in contact with the surface protection layer when applied with a voltage, and a developing unit for developing a latent image formed on the image carrier with toner to thereby produce a corresponding toner image. Further, the surface protection layer has a diamond-like carbon structure or an amorphous structure containing hydrogen, the developing unit develops the latent image with a magnet brush formed by magnetic particles for development, and the charging member includes magnetic particles for charging having a mean particle size smaller than a mean particle size of the magnetic particles for development. Also, the surface protection layer has a volume resistance of 109 &OHgr;·cm to 1012 &OHgr;·cm and a Knoop hardness of 400 kg/mm2 or greater, and a light transmission of the surface protective layer is 50% or more of a wavelength of light used for exposing the image carrier.
    • 一种图像形成装置,包括具有导电支撑体的图像载体,至少形成在导电支撑体上的光电导层,以及形成在光电导层上并包括电荷注入层的表面保护层。 还包括充电部件,用于在施加电压时对与表面保护层接触的图像载体进行充电;以及显影单元,用于利用调色剂使形成在图像载体上的潜像显影,从而产生相应的调色剂图像。 此外,表面保护层具有类金刚石碳结构或含氢的非晶结构,显影单元用由用于显影的磁性颗粒形成的磁刷形成潜像,并且充电构件包括用于充电的磁性颗粒,其具有平均值 颗粒尺寸小于用于显影的磁性颗粒的平均粒度。 此外,表面保护层的体积电阻为10 9Ω·cm〜10 12Ω·cm,Knoop硬度为400kg / mm 2以上,表面保护层的透光性 是用于曝光图像载体的光的波长的50%以上。