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    • 24. 发明授权
    • Reversible image display medium
    • 可逆图像显示介质
    • US06686940B2
    • 2004-02-03
    • US09987575
    • 2001-11-15
    • Masahiko MatsuuraHiroshi MizunoAkihito IkegawaMasaharu KanazawaKeyaki YogomeTakaji Kurita
    • Masahiko MatsuuraHiroshi MizunoAkihito IkegawaMasaharu KanazawaKeyaki YogomeTakaji Kurita
    • G02B117
    • G02F1/167G03G15/6597
    • A reversible image display medium accommodates a dry developer in each cell formed between two substrates. The developer contains at least two kinds of frictionally chargeable dry developing particles having different chargeable polarities and different optical reflection densities. An image display can be achieved by forming an electrostatic latent image on one of the substrates to drive the developing particles in an electric field based on the electrostatic latent image. The developing particles are set to an average charge quantity of 1.0 &mgr;C/g to 10 &mgr;C/g to achieve good image display. Optionally at least one kind of the developing particles are magnetic developing particles having a coercive force of 50 oersteds to 250 oersteds, and optionally having an optical reflection density of 1.0 or more. An amount of small-size developing particles and/or an addition of a third component may be adjusted and volume average particle size ratio of developing particles may be controlled.
    • 可逆图像显示介质容纳在两个基板之间形成的每个单元中的干显影剂。 显影剂含有至少两种具有不同可充电极性和不同光反射浓度的可摩擦充电的干显影剂。 可以通过在其中一个基板上形成静电潜像来基于静电潜像在电场中驱动显影颗粒来实现图像显示。 将显影颗粒设定为1.0μC/ g至10μC/ g的平均电荷量以获得良好的图像显示。 任选地,至少一种显影颗粒是具有50奥斯特至250奥斯特的矫顽力的磁性显影颗粒,并且可选地具有1.0或更大的光学反射浓度。 可以调节一定量的小尺寸显影颗粒和/或添加第三组分,并且可以控制显影颗粒的体积平均粒径比。
    • 27. 发明授权
    • Developing device accommodating a two component developer and method of
using same
    • 容纳双组分显影剂的显影装置及其使用方法
    • US5440378A
    • 1995-08-08
    • US130443
    • 1993-10-01
    • Masahiko Matsuura
    • Masahiko Matsuura
    • G03G15/09G03G9/08G03G9/10G03G13/09G03G15/08
    • G03G13/09G03G9/0821G03G9/10
    • A developing device accommodating a two-component developer of a carrier and a toner the mean particle diameter of which is 3.about.5 .mu.m. The developing device has a rotatable developing roller confronting the photoreceptor for supplying the developer to the electrostatic latent image on the photoreceptor at a developing region where the developing roller confronts the photoreceptor while holding the developer thereon and adjusting member for adjusting a developer packaged density (PD) in the developing region at 40.about.50. The developer packaged density (PD) is obtained via the following equation:PD=100M/(p.multidot.D.sub.s)wherein the following obtains:M: amount of developer on the developing roller per unit of surface area (g/cm.sup.2).rho.: carrier's true specific gravity (g/cm.sup.3)D.sub.s : spacing between developing roller and photoreceptor (cm). A method for developing an electrostatic latent image uses the developing device to provide a suitable developer packaged density (PD).
    • 一种容纳载体的双组分显影剂的显影装置和平均粒径为3微米的调色剂。 显影装置具有可旋转的显影辊,用于将显影剂供应到显影辊面对感光体的显影区域上的感光体上的静电潜像,同时保持显影剂和用于调节显影剂包装密度的调节部件(PD )显影剂封装密度(PD)通过以下等式获得:PD = 100M /(pxDs)其中以下获得:M:显影辊上每单位表面积的显影剂量 (g / cm 2)rho:载体的真比重(g / cm 3)Ds:显影辊和感光体之间的间隔(cm)。 用于显影静电潜像的方法使用显影装置来提供合适的显影剂封装密度(PD)。