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    • 67. 发明公开
    • Electrophotographic photoreceptor
    • 电子照相机光感受器。
    • EP0381036A2
    • 1990-08-08
    • EP90101429.0
    • 1990-01-24
    • ISHIHARA SANGYO KAISHA, LTD.
    • Murasawa, SadaoHirobe, YoshioAndo, Hitoshi
    • G03G5/087G03G5/09G03G5/04G03G5/05
    • G03G5/09G03G5/04G03G5/0507G03G5/0514G03G5/0517G03G5/087
    • Disclosed is an electrophotographic photo­receptor which is superior in sensitivity to light of longer wavelength region with good stability of the sensitivity and is suitable for formation of high quality color image by scanning exposure with laser beam. This photoreceptor comprises an electroconductive support and, provided thereon, a photosensitive layer containing a titanium dioxide sensitive to light of longer wavelengths which is obtained by treating the surface of titanium dioxide particles with a mineral acid and then supporting on the surface of the particles a cyanine dye sensitizer and a hydrophobic organic compound. The mineral acid is preferably hydrofluoric acid and the hydrophobic organic compound is preferably aromatic or aliphatic organic acid and acid anhydride thereof.
    • 公开了一种具有良好的灵敏度稳定性的较长波长区域的光的灵敏度优异的电子照相感光体,适用于通过用激光束扫描曝光形成高质量的彩色图像。 该感光体包括导电载体,并且在其上提供含有对较长波长的光敏感的二氧化钛的感光层,其通过用无机酸处理二氧化钛颗粒的表面,然后在颗粒表面上支撑花青 染料敏化剂和疏水性有机化合物。 无机酸优选为氢氟酸,疏水性有机化合物优选为芳族或脂肪族有机酸及其酸酐。