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
    • 83. 发明申请
    • NEGATIVELY CHARGED TONER FOR USE IN ELECTROSTATOGRAPHY
    • 用于电摄影的负极电荷调谐器
    • WO1994027191A1
    • 1994-11-24
    • PCT/EP1994001310
    • 1994-04-25
    • AGFA-GEVAERT NAAMLOZE VENNOOTSCHAPTAVERNIER, Serge, MartinOP de BEECK, Werner, JozefDEWANCKELE, Jean-Marie, OdilVAN ROMPUY, Peter
    • AGFA-GEVAERT NAAMLOZE VENNOOTSCHAP
    • G03G09/087
    • G03G9/08759G03G9/0823G03G9/08797G03G9/09741G03G9/0975G03G9/09758
    • A dry toner powder the toner particles of which are triboelectrically negatively charged and are suited for development of an electrostatic charge pattern, wherein said toner particles contain: 1) at least one triboelectrically negatively chargeable thermoplastic resin serving as binder having a volume resistivity of at least 10 OMEGA -cm, and 2) at least one resistivity lowering substance being an onium compound having a volume resistivity lower than the volume resistivity lower than the volume resistivity of said binder, and said toner particles are free from non-resinous charge-controlling agent(s) providing negative triboelectric chargeability, wherein said substance(s) (2) is (are) capable of lowering the volume resistivity of said binder by a factor of at least 3.3 when present in said binder in a concentration of 5 % by weight relative to the weight of said binder, and wherein said toner powder containing toner particles including a mixture of said ingredients (1) and (2) under triboelectric charging conditions is capable of obtaining an absolute median (q/d) charge/diameter value (x) lower than 10 fC/10 mu m but not lower than 1 fC/10 mu m, and said toner powder under the same triboelectric charging conditions but free from said substance(s) (2) then has an absolute median q/d value (x) at least 50 % higher than when said substances(s) is (are) present, and wherein the distribution of the charge/diameter values of the individual toner particles is characterized by a coefficient of variation nu
    • 一种干调色剂粉末,它们的调色剂颗粒是摩擦带电荷的并且适于显影静电荷图案,其中所述调色剂颗粒包含:1)至少一种摩擦带电性带负电荷的热塑性树脂,其用作至少具有体积电阻率的粘合剂 10)OMEGA-cm,和2)至少一种电阻率降低物质是体积电阻率低于所述粘合剂的体积电阻率的体积电阻率的鎓化合物,并且所述调色剂颗粒不含非树脂电荷 提供负摩擦带电性的控制剂,其中当所述粘合剂中以5的浓度存在时,所述物质(2)能够将粘合剂的体积电阻率降低至少3.3, 相对于所述粘合剂的重量的重量%,并且其中所述含有调色剂颗粒的调色剂粉末包括所述成分(1)和(2)un的混合物 摩擦带电条件能够获得低于10fC /10μm但不低于1fC /10μm的绝对中值(q / d)电荷/直径值(x),并且所述调色剂粉末在相同的摩擦电 充电条件但不含所述物质(2)的绝对中值q / d值(x)比所述物质存在时至少高50%,并且其中电荷的分布 单个调色剂颗粒的直径值的特征在于变异系数nu <0.33。