PRODUCTION OF PHOTORECEPTOR DRUM AND TREATING TANK

PROBLEM TO BE SOLVED: To prevent formation of buildups of a photosensitizer coating film on the edge of a photoreceptor drum produced by applying a photosensitizer by immersion. SOLUTION: A raw tube held at one end and kept in a vertical position is immersed in a liquid tank of a photosensitizer and then pulled up to apply the photosensitizer on the surface of the tube of obtain a photoreceptor drum 1. The photoreceptor drum 1 thus coated with the photosensitizer as kept in the vertical position is left to stand in an atmosphere of vapor 9 of a solvent 2 which dissolves the photosensitizer. The concn. of the solvent vapor 9 is controlled to >=0.1%, and the drum is left to stand for >=5 sec. By this method, since the photosensitizer remaining on the lower end of the photoreceptor drum 1 is dissolved with the solvent vapor 9 after the drum is pulled up from the liquid tank of the photosensitizer, formation of buildups of the photosensitizer coating film on the edge of the finished photoreceptor drum can be avoided.