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    • 18. 发明申请
    • IMAGE FORMATION APPARATUS AND IMAGE FORMATION METHOD
    • 图像形成装置和图像形成方法
    • WO1997036213A1
    • 1997-10-02
    • PCT/JP1996001467
    • 1996-05-30
    • TORAY INDUSTRIES, INC.HARA, HidetoshiTAMURA, Yoshihiro
    • TORAY INDUSTRIES, INC.
    • G03G15/10
    • G03G15/101G03G15/0815
    • A method and an apparatus for image formation, in which scrapers (21d, 21e) are used for removing toner particles remaining on the surface of a development roller (21b) for supplying the toner particles to a development region of a latent image support (11) having an electrostatic latent image formed thereon. The development roller has a surface roughness not greater than the mean particle size of the toner, and preferably, not greater than the half of the mean particle size, so as to prevent the toner particles from filling surface recesses of the development roller. The residual toner particles on the surface of the development roller are removed by the scrapers. The gap between the latent image support and the development roller is preferably in a range between the distances for the maximum print density and half that density. A development bias is applied across this gap. In this way, the toner particles remaining on the surface of the development roller are removed to make prints without contamination on its white base portions or uneven print density.
    • 一种用于图像形成的方法和装置,其中使用刮刀(21d,21e)来除去残留在用于将调色剂颗粒供应到潜像载体(11)的显影区域的显影辊(21b)的表面上的调色剂颗粒 ),其上形成有静电潜像。 显影辊的表面粗糙度不大于调色剂的平均粒度,优选不大于平均粒径的一半,以防止调色剂颗粒填充显影辊的表面凹陷。 显影辊表面上的残留调色剂颗粒被刮刀除去。 潜像载体和显影辊之间的间隙优选在最大印刷密度和该密度的一半的距离之间的范围内。 在这个差距上应用发展偏见。 以这种方式,除去显影辊表面上的调色剂颗粒,使印刷品在其白色基底部分上没有污染或印刷密度不均匀。