| 摘要 |
PROBLEM TO BE SOLVED: To solve the problem of the occurrence of an abnormal image due to toner color mixing inside downstream developing device and residual toner on a developing roller. SOLUTION: This image forming device processes voltage applying means 107M, 107C, 108M and 108C to apply bias voltage at which normal electrified toner receives force applied from toner carriers 101M and 101C toward the image part of a latent image carrier 15 and also force applied from supply members 102M and 102C toward the toner carriers 101M and 101C in the developing state of developing devices 1M and 1C, and to apply bias voltage at which the normal electrified toner receives force applied from the toner carriers 101M and 101C toward the image part and the non-image part of the latent image carrier 15 and also force applied from the toner carriers 101M and 101C toward the supply members 102M and 102C in the non-developing state of the developing devices 1M, 1C, 1Y and 1K. |
