| 摘要 |
PURPOSE:To enhance image quality by arranging an electrostatic latent image bearing body and a toner carrying body opposite to each other spaced in a constant distance, and carrying a toner on said carrying body regulated to a layer thickness smaller than said distance, a specified total electrostatic charge amt., and a specified packed density. CONSTITUTION:The electrostatic latent image bearing drum 1 and the toner carrying sleeve 2 are held opposite to each other spaced in a prescribed distance. The toner 5 is placed in a hopper 3 provided with a coating means 4. The drum 1 and the sleeve 2 are rotated in the arrow direction, and the toner 5 is attached to an electrostatic latent image to develop it. The toner is regulated to a layer thickness smaller than said distance, preferably 15-100mum, and to a total charge amt. per unit area Q (coulomb/cm<2>) of the toner carried on the sleevle 2:3X10<-10¦Q¦<10<-7>, and to a packed density of 0.1-0.6g/cm<2> with the coating means 4 and carried with the sleeve 2. Since the toner is regulated to the various specified conditions, an image high in fidelity can be obtained and fogging can be prevented. |
