| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming device by which time required until the finish of printing is shortened even in the case that a multicolor toner image and a monochromatic toner image coexist as the toner image of plural surfaces formed at an intermediate transfer body. SOLUTION: In the case that the color page of an A4 size and the monochromatic page of the A4 size successively coexist, 'NULL' is registered in the part of 'Yellow', the part of 'Magenta' and the part of 'Cyan' out of the part of 'the storing destination address of the image data of second page', so that a video data signal is transmitted to a print engine part by synchronizing with a vertical synchronizing signal and a horizontal synchronizing signal corresponding to Y1, M1, C1, K1 and K2 without reading out the data of the second page of yellow, magenta and cyan from a storing part by an engine I/F controlling part, and the color toner image as a first page and the monochromatic toner image as the second page are formed on two surfaces at the intermediate transfer belt. |
