会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Electrophotographic device
    • 电子照相设备
    • US4882257A
    • 1989-11-21
    • US197962
    • 1988-05-24
    • Akio MaruyamaTeigo SakakibaraYuichi Hashimoto
    • Akio MaruyamaTeigo SakakibaraYuichi Hashimoto
    • G03G13/22
    • G03G13/22
    • An electrophotographic device performing reversal development to develop the portion with lower absolute value of potential in an electrophotographic process having steps of primary charging, imagewise exposure, developing and cleaning, and having a photosensitive member of the lamination type which uses a layer coated with an organic pigment dispersed in a solvent or in a solvent and a polymer binder, as the charge generation layer, wherein the potential of the photosensitive member and process conditions are under constant conditions, said constant conditions being within the range as defined by the following formula of Vd, t and V.sub.H, when the surface potential of the photosensitive member immediately after charged with a primary charger is defined as Vd (V), the time from primary charging to toner development as t (sec) and further the surface potential of the photosensitive member at which the toner developing density becomes the half value of the saturated density as V.sub.H (V):.vertline.V.sub.H .vertline..ltoreq.(.vertline.Vd.vertline..sup.-0.65 +1.35.times.10.sup.-2 t).sup.-1.54(Vd, V.sub.H are of the same sign:); with proviso, in the case of bias exposure (image exposure is also effected on the white background portion), Vd shall be the potential immediately after imagewise exposure, and t the time from imagewise exposure to toner development.
    • 电子照相装置进行反转显影以在具有初次充电,成像曝光,显影和清洁的步骤的电子照相方法中开发具有较低的电势绝对值的部分,并且具有使用涂覆有机层的层压型感光构件 颜料分散在溶剂或溶剂和聚合物粘合剂中作为电荷产生层,其中感光构件的电位和工艺条件处于恒定条件下,所述恒定条件在如下式Vd所定义的范围内 ,t和VH,当紧接在充电一次充电器之后的感光构件的表面电位被定义为Vd(V)时,从初级充电到调色剂显影的时间为t(秒),进一步将感光构件的表面电位 其中调色剂显影密度成为饱和密度的一半值为VH(V):| VH |