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    • 4. 发明授权
    • Contact type developing method and developing unit
    • 联系型开发方法与开发单位
    • US5110705A
    • 1992-05-05
    • US502171
    • 1990-03-30
    • Masahiro HosoyaMitsunaga SaitoMitsuharu EndoYoshimitsu OhtakaYukio Futamata
    • Masahiro HosoyaMitsunaga SaitoMitsuharu EndoYoshimitsu OhtakaYukio Futamata
    • G03G13/08G03G15/08
    • G03G15/0812G03G13/08G03G15/0806G03G2215/0614G03G2215/0636
    • In a developing method in which a thin layer of toner is formed on the surface of a toner carrier to which a developing bias voltage is applied and the thin layer of toner is supplied to an electrostatic latent image to thereby render the electrostatic latent image visible, the improvement wherein:when let it be supposed that:a quantity of electrification of toner that adheres to a latent image holding body by development is q [C/kg];a quantity of charges accumulated by the toner due to its triboelectrification with the latent image holding body is q.sub.p [C/kg];an electric resistance of the toner carrier is R [.OMEGA..multidot.m.sup.2 ];an effective length of the toner carrier is l [m];an effective surface area of the toner carrier is S.sub.r [m.sup.2 ];a quantity of the toner that adheres to the latent image holding body by development is m.sub.p [kg/m.sup.2 ];a speed of movement of the surface of the latent image holding body is V.sub.p [m/sec];a quantity of the toner that adheres to the surface of the toner carrier is m [kg/m.sup.2 ]; anda speed ratio of the surface of the toner carrier to that of the latent image holding body is k,these values are so adjusted as to satisfy the following conditional expression:-100
    • 在其中在施加了显影偏压的调色剂载体的表面上形成调色剂薄层并将薄层的调色剂供应到静电潜像从而使静电潜像可见的显影方法中, 其改进在于:当假设:通过显影附着在潜像保持体上的调色剂的带电量为q [C / kg]; 由于其与潜像保持体的摩擦带电,由调色剂累积的电荷量为qp [C / kg]; 调色剂载体的电阻为R [OMEGA xm2]; 调色剂载体的有效长度为l [m]; 调色剂载体的有效表面积为Sr [m 2]; 通过显影附着在潜像保持体上的调色剂量为mp [kg / m 2]。 潜像保持体的表面的移动速度为Vp [m / sec]。 附着在调色剂载体表面的调色剂的量为m [kg / m 2]; 并且调色剂载体的表面与潜像保持体的表面的速度比为k,这些值被调整为满足以下条件表达式:-100 <{ - (q-qp)mp Vp l + qp (km-mp)Vpl}×R / Sr <100。 选择性地布置显影单元,使得可以适当地应用该显影方法。 显影方法和显影单元使得通过调色剂载体不断地向形成在静电潜像保持体的表面上的静电潜像提供适量的调色剂,从而允许均匀,高密度,清晰的图像,无 在要提供的非图像部分上雾。
    • 7. 发明授权
    • Photoconductor for xerography
    • 用于静电复印的感光体
    • US5422706A
    • 1995-06-06
    • US780930
    • 1991-10-23
    • Koichi TsunemiMasahiro HosoyaMitsunaga SaitoHideyuki NishizawaYoshimitsu OtakaMitsuharu Endo
    • Koichi TsunemiMasahiro HosoyaMitsunaga SaitoHideyuki NishizawaYoshimitsu OtakaMitsuharu Endo
    • G03G15/00G03G5/00
    • G03G15/751
    • A photoconductor is disclosed, which comprises a conductive cylindrical support which is substantially not hollowed, the conductive cylindrical support having a drive transferring mechanism coaxially and unifiedly provided on at least one of the end portions thereof, the conductive cylindrical support having a photoconductive layer on the outer periphery. The moment of inertia I (g . cm.sup.2) of the substantially not-hollowed conductive support is in the range of 0.4.ltoreq.I.ltoreq.140 (g . cm.sub.2), the diameter thereof being in the range from 0.5 to 2.0 cm. When the relation of C/(S . .omega.).ltoreq.0.4 (where S (cm.sup.2) is the square measure of the portion of the photoconductive layer on the photoconductor; C (cal/.degree.C.) is the heat capacity of the substantially not-hollowed cylindrical support; and .omega. (rad/s) is the rotating speed in development) is satisfied, high quality images can be readily and stably obtained without damages of the drive system.
    • 公开了一种光电导体,其包括基本上不中空的导电圆柱形支撑件,导电圆柱形支撑件具有同轴且统一地设置在其至少一个端部上的驱动传递机构,导电圆柱形支撑件在其上具有光电导层 外围。 基本上没有中空的导电载体的惯性矩I(g·cm 2)在0.4≤I≤140(g·cm 2)的范围内,其直径在0.5-2.0cm的范围内 。 当C /(S。ω)= 0.4(其中S(cm2))是光电导体上的光电导层部分的平方测量; C(cal /℃)是C / 基本上不空心的圆柱形支撑件;并且ω(rad / s)是显影中的转速),可以容易且稳定地获得高质量的图像,而不会损坏驱动系统。