| 摘要 |
PURPOSE:To precisely evaluate the cleanliness on the surface of a substrate for a photosensitive body prior to the formation of a photosensitive layer thereon by irradiating UV rays to the surface of the substrate for the photosensitive body, detecting the ion current generated by the ionization of the material sticking on the substrate surface by the photoelectrons released from the substrate surface and evaluating the cleanliness of the substrate surface. CONSTITUTION:The UV rays are irradiated to the surface of the substrate for the photosensitive body and the output signal based on the ion current of the material sticking to the substrate surface ionized by the photoelectrons released from the surface is investigated. More specifically, the surface of an aluminum alloy pipe is ground with a grinding wheel and is subjected to thorough decreasing and cleaning to form the substrate 1 for the photosensitive body. Said pipe is treated in the same manner as for the substrate 1 and is further subjected to UV cleaning in oxygen flow to form the substrate 2 for the photosensitive body. Compressed air contg. oil is blown to the substrate which is more stained than the substrate 1 to form the substrate 3 for the photosensitive body. Powder of selenium is dispersed and stuck in place of the oil to the substrate to form the substrate 4 for the photosensitive body. The photosensitive layers are formed on the substrates 1-4 for the photosensitive bodies and the copied images are evaluated after making copying. A correlation is then admitted between the output signal level and the image quality. |
