| 摘要 |
PROBLEM TO BE SOLVED: To provide an image forming apparatus that prevents adverse effect on an image when separating a secondary transfer roller from an intermediate transfer body in order to pass an image pattern (a) through a secondarily transfer position and when bringing the secondary transfer roller into firm contact therewith, is compact, and ensures satisfactory print productivity. SOLUTION: The image forming apparatus is provided with a control means that operates the device as follows. The image pattern (a) passes a primary transfer position for the final color, which is located on the downstream side in the direction of the rotation of the intermediate transfer body. Thereafter the secondary transfer of the image, formed before the image reaches the secondary transfer position and before the image pattern (a) is formed, is finished. Thereafter the firm contact of the secondary transfer roller with the intermediate transfer body is released. Right after the image pattern (a) is passed through the secondary transfer position, the secondary transfer roller is brought into firm contact with the intermediate transfer body again. Thereafter the formation of a latent image of the subsequent print image is started. |
