Crystalline oxotitanylphthalocyanine and electrophotographic photoreceptor using the same
申请人:SHARP KABUSHIKI KAISHA
公开号:EP0997783A2
公开(公告)日:2000-05-03
An object of the invention is to improve the photosensitivity characteristics, characteristics on repeated use and stability of a photoreceptor. A photosensitive layer (4a, 4b) formed on a conductive support (1) of a photoreceptor (8a-8d) contains crystalline oxotitanylphthalocyanine having major peaks in an X-ray diffraction spectrum at Bragg angles (2θ ± 0.2°) of 7.3°, 9.4°, 9.6°, 11.6°, 13.3°, 17,9°, 24.1° and 27.2°, wherein a peak bundle formed by overlapping the peaks at 9.4° and 9.6° is the largest peak, and the peak at 27.2° is the secondary largest peak as a charge generating substance (2). Furthermore, it contains a bisamine compound, an N,N'-bisenamine compound, a styryl compound, an amine-hydrazone compound, a benzofuran-bishydrazone compound, a bisenamine compound, a benzofuran-bishydrazone compound or a benzofuran-bis-cyclic hydrazone compound represented by the particular structural formulae as a charge transporting substance (3).
本发明的目的是改善感光器的光敏特性、重复使用特性和稳定性。在光感受器(8a-8d)的导电支架(1)上形成的光敏层(4a、4b)含有结晶的氧代酞菁,其 X 射线衍射谱中布拉格角(2θ ± 0.2°)的主要峰值为 7.3°、9.4°、9.6°、11.6°、13.3°、17.9°、24.1°和 27.2°,其中由 9.4°和 9.6°处的峰重叠形成的峰束是最大峰,而 27.2°处的峰是作为电荷生成物质的次大峰 (2)。此外,它还含有双胺化合物、N,N'-联苯胺化合物、苯乙烯基化合物、胺腙化合物、苯并呋喃双腙化合物、双烯胺化合物、苯并呋喃双腙化合物或苯并呋喃双环腙化合物作为电荷传输物质(3)。