| 摘要 |
PROBLEM TO BE SOLVED: To prevent such a failure that it has not time to execute a density inspection, etc., in the case of forming plural color images. SOLUTION: Plural alignment marks 61 (61a to 61n) art arranged on an intermediate transfer belt 6, and as to an interval La between each alignment mark, from the 1st alignment mark 61a to the last alignment mark 61n, the interval La is controlled to be a previously defined distance, and a distance from the last mark 61n to the 1st mark 61a is set longer than the interval La between the marks other than the marks by a predetermined distance. Plural color images are formed on the intermediate transfer belt 6 by taking each alignment mark 61 as a reference. |
