| 摘要 |
PURPOSE:To obtain a good image free from fog, by arranging a member for bearing an electrostatic latent image, a member for holding and feeding a charged developer, both members being held at a prescribed distance, and plural wires for applying AC voltage different in phase from each other located under the latter member, and making it possible to locate both members considerably away from each other. CONSTITUTION:An endless mesh belt 4 is installed with one part facing to the drum 2 bearing an electrostatic latent image 3. The belt 4 conveys a toner 10 out of a hopper 9, and the toner 10 is regulated in amt. with a blade 11, and negatively charged with a feed charger 12. When AC voltages different in phase from each other are applied from voltage sources 7, 8 through wires 61-64 installed under the belt 4, the negative toner 10' is forced to vibrate and jump by the alternating electric field formed with the wires to form a floating toner layer. When the latent image 3 of the drum 2 comes into this floating toner layer, the toner 10' attaches to the image. Hence, a considerably large space can be allowed between the drum 2 and the belt 4. |
