| 摘要 |
PROBLEM TO BE SOLVED: To always excellently transfer a toner image without forming a fault image even by an image forming device of a reversal developing system whose transfer means is a contact type electrification system, and constituted so as to abut on an image carrier with a light pressure and rotate following the image carrier. SOLUTION: The toner image is formed by reversely developing an electrostatic latent image formed on the surface of the image carrier 1. The transfer means 6 is a rotating body brought into contact with the carrier 1 with an abutting pressure being <=3.0g/mm in a state where a recording material P is interposed in the carrier 1 and rotates following the carrier 1. Besides, the material P is interposed and carried at a transfer nip part N being the abutting part of the carrier 1 and the transfer rotating body at a speed corresponding to the rotating speed of the carrier 1. Then, the toner image forming on the carrier 1 side is transferred on the material P side by imparting electric charge for transfer to the back surface of the material P by the transfer rotating body. Besides, this device is provided with a recording material carrying means interposing and carrying the material P and feeding it to the transfer nip part N. Then, the carrying speed of the recording material by the recording material carrying means is set to be 0.01-3% higher than the rotating speed of the carrier 1. |
