抄録
The effects of crude or finished β-CuPc and chemical property of binder resin to electrophotographic properties of photoreceptor have been studied. Electrophotographic properties of the photoreceptor depend on particle size and shape of β-CuPc and interaction between β-CuPc and binder resins.
Electrophotographic sensitivity of crude type β-CuPc (needle type) resin layer is higher than that of finished type β-CuPc resin layer.
The electrophotographic characteristics of finished type β-CuPc resin layer especially depend on chemical properties of binder resins. Novolak type resin having phenyl radical and/or hydroxyl group have little effect to the free carrier generation in the photoreceptor, while acrylic type resin having ester and/or carboxyl group is very effective to the free carrier generation. The use of finished type β-CuPc is effective to selection of binder resins of the photoreceptor, The measurements of the contact potential difference and the photovoltage also give effective information to selection of binder resins and CuPc photoconductor.
The photoreceptor of needle type β-CuPc and acrylic resin has good electrophotographic properties and the sensitivity is 4.13 lux sec under the exposure of white light.
