| 摘要 |
PURPOSE:To prevent local damages and toner stains on a photosensitive body and to ensure high quality images free from image stains for a long period by using a toner powder mixed with a specified amt. of a La compd. CONSTITUTION:A fine powder of a La compd. is mixed with the toner powder in an amt. of 0.01-20wt%, and the use of this mixture permits the fine powder of the La compd. to attach to the surface of the photosensitive body in a uniform state in a developing process, and to slide in contact with its surface during sweeping operation of a blade at the time of blade cleaning and to grind it, consequently, the attached matter and the scratches caused by sweeping with the blade to be eliminated, the surface to be kept always in a clean state, prevented from stains on the surface due to toner filming, and the like, and from rubbing scratches due to the blade, and hence, copy images high in quality and free from fog and defects to be stably formed. |
