| 摘要 |
PROBLEM TO BE SOLVED: To further efficiently output an image in a shorter time by avoiding a problem of requiring the longer time for forming the image depending on the output order of the image. SOLUTION: When inputting images of 4 pages in the A4 size being the standard size provided with the image of black(BLK) on the first page, and the image of full color(FC) on the second page and the third page, and then the image of black(BLK) on the fourth page, the image of black(BLK) on the first page is independently formed based on detection of the belt mark provided on the intermediate transfer belt 21 The images of full color(FC) in the lot of 2 planes on the second page and the third page is simultaneously formed on the intermediate transfer belt 21. The image of black(BLK) on the fourth page is independently formed. The images for 4 sheets are formed by merely rotating the intermediate transfer belt 21 six times. |
