| 摘要 |
PURPOSE:To leave the quantity of misregistration within an allowable value and to obtain a favorable image by providing plural rollers which make a moving means run by rolling, and setting at least one of the rollers as a crown roller whose diameter of the center part in a transverse direction is large. CONSTITUTION:The moving means for carrying transferred substances 6a and 6b is arranged in order to abut on the outer circumferential surfaces of the sensitive body drums 3C, 3M and 3Y of respective image forming means I-III. The moving means has a carrier belt 5 which is rolled by the rollers 7 and 8 to be driven in the direction of an arrow 9 and it bears the transferred substances to carry to the image forming means. And one of the rollers 7 and 8, a driving roller 7, is set as the crown roller and its diameter of the center part in the lateral direction of roller is made larger than the diameters of both end parts. Then, the misregistration in the horizontal direction of a color image can be prevented and that in a carrier direction can be also prevented in a simple way. Thus, the misregistration can be suppressed within the allowable value and the favorable image can be obtained.
|
