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    • 7. 发明授权
    • Photosensitive body, developing unit, and image forming apparatus
    • 感光体,显影单元和成像设备
    • US07858277B2
    • 2010-12-28
    • US11468449
    • 2006-08-30
    • Makoto Takeda
    • Makoto Takeda
    • G03G5/00
    • G03G5/047G03G5/00
    • A photosensitive body according to this invention includes a photosensitive layer formed on a surface thereof for being electrically charged and having an electrostatic latent image formed thereon by being exposed to light irradiation, and wherein the photosensitive layer has an initial dynamic friction coefficient μk0 of 0.6 or less against a prescribed member, and wherein where a dynamic friction coefficient of the photosensitive layer against the prescribed member after a prescribed friction is given is defined as a dynamic friction coefficient μk1, the photosensitive layer has a dynamic friction coefficient variation amount Δμk, as a difference between the initial dynamic friction coefficient μk0 and the dynamic friction coefficient μk1, of 0.06 or less. The photosensitive layer having the above mentioned structure has superior durability due to superior wear resistance, so that the photosensitive layer can be made thinner while preventing duration deterioration that may occur with the thinner photosensitive layer.
    • 根据本发明的感光体包括在其表面上形成的感光层,用于带电并且通过暴露于光照射形成在其上的静电潜像,并且其中感光层的初始动摩擦系数μk0为0.6或 并且其中在给定规定摩擦后感光层相对于规定构件的动摩擦系数定义为动摩擦系数μk1时,感光层具有动摩擦系数变化量&Dgr;μk, 初始动摩擦系数μk0与动摩擦系数μk1之差为0.06以下。 具有上述结构的感光层由于具有优异的耐磨性而具有优异的耐久性,从而可以使感光层变薄,同时防止在较薄的感光层可能发生的持续时间变差。
    • 10. 发明授权
    • Liquid crystal matrix display device with polarity inversion of signal
and counter electrode voltages to maintain uniform display contrast
    • 具有极性反转信号和对电极电压的液晶矩阵显示装置,保持均匀的显示对比度
    • US4906984A
    • 1990-03-06
    • US277398
    • 1988-11-28
    • Makoto TakedaNobuaki MatsuhashiHiroshi Take
    • Makoto TakedaNobuaki MatsuhashiHiroshi Take
    • G02F1/133G09G3/36H04N5/66
    • G09G3/3655G09G3/3614G09G3/3648
    • A liquid crystal display device includes a plurality of scanning electrodes, a plurality of signal electrodes, and a plurality of picture element electrodes connected to intersections of scanning and signal electrodes via a plurality of switching transistors. A plurality of counter electrodes are arranged opposite to the picture element electrodes. The polarity of display signals applied to the signal electrodes is inverted for a period equal to an integer multiple of a pulse width of a scanning pulse applied to the scanning electrodes. Signals of alternating polarity are applied to the counter electrodes in synchronism with the polarity inversion of the display signals. In this way, non-uniform display contrast along the signal electrode direction of the display screen is avoided by eliminating the stray capacitance timing differences according to the position of picture element electrodes along the signal electrode direction of the display screen.
    • 液晶显示装置包括多个扫描电极,多个信号电极以及通过多个开关晶体管连接到扫描信号电极和信号电极的交点的多个像素电极。 多个对置电极与像素电极相对配置。 施加到信号电极的显示信号的极性反转等于施加到扫描电极的扫描脉冲的脉冲宽度的整数倍的周期。 与显示信号的极性反转同步地将交替极性的信号施加到对置电极。 以这种方式,通过根据显示屏幕的信号电极方向上的像素电极的位置消除杂散电容定时差来避免沿显示屏幕的信号电极方向的不均匀的显示对比度。