Darby & Darby
Electrophotography photosensitive body and a electrophotography device equipped with the same
An electrophotography photosensitive body has a single layer photosensitive layer on top of a conductive substrate, directly or via an undercoat layer. The single layer photosensitive layer contains at least a resin binder, a charge generating substance, and a charge transport substance, wherein at least one of the charge generating substances is a titanyl phthalocyanine, which, in a x-ray powder diffraction spectrum having a radiation source of CuK &agr; and within a range of a Bragg angle 2&thgr;=5&#732;35&deg;, a ratio, R, of a value, P, of a diffraction intensity of a highest peak and a value, B, of a diffraction intensity of the background satisfies the equation R=(P&#8722;B)/B&lE;7.0. The resulting electrophotographic photosensitive layer shows excellent electrical properties with positive charging as well as excellent stability when repeatedly used.
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Masaru Kenichi
Takeuchi Ohkura