| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device which is applied to monochromatic and color image forming devices and performs development by using two kinds of toners of a dark color and pale color of the same colors (for example, any among cyan(C), magenta(M), yellow(Y) and black(K)) and with which the reproducibility of the gradation characteristic in the dynamic range in the high- density part is improved and the occurrence of image roughening in the highlight part (low density part) is prevented. SOLUTION: This image forming device is constituted by superposing at least two of the dark toner images or pale toner images formed on plural image forming bodies on a common intermediate transfer body, then again superposing the toner images on the intermediate transfer body on a transfer material. |
