| 摘要 |
<P>PROBLEM TO BE SOLVED: To form an image in accordance with an image forming mode such as a full-color mode and a mono-color mode, to attain the miniaturization of an apparatus, to prevent image defects such as scattering and the like to occur due to the stretching of a belt as a moving intermediate transfer body and a belt for transporting transfer material and a constitutional condition of a primary transfer part, and to secure a stable transfer performance. <P>SOLUTION: The moving body 6 can be attached/detached to/from a 1st image carrier 1 with the shift of a plurality of voltage apply members 7, and a contact area 2 between the moving body 6 and the voltage apply member 7 is arranged on the downstream side in the moving direction of the moving body 6 of a contact area 1 between the 1st image carrier 1 and the moving body 6, and regarding a distance from the center part of the contact area 2 to the center part of the contact area 1 in the moving direction of the moving body 6, the distance in the 1st image forming part Y positioned on the uppermost stream side in the moving direction of the moving body 6 is the largest among the plurality of image forming parts, and the distance in the 2nd image forming part Bk used in the mono-color mode is the second largest. <P>COPYRIGHT: (C)2005,JPO&NCIPI |
