| 摘要 |
PURPOSE:To obtain an excellent image by providing an image forming means opposite a beltlike image formation body which is provided to a guide member and has a small-curvature-radius part at its rear part. CONSTITUTION:The guide member 4 has one curved surface with a relatively large radius R of curvature as a conveyance surface where a photosensitive belt 1 slides and also has plural curved surface parts 4A with a radius (r) of curvature smaller than the radius R of curvature at parts of the curved surface that respective image forming means face. Therefore, the photosensitive belt 1 contacts only respective top parts of the curved surface part 4A of the guide member 4, so that a secure slide state by uniform press-contacting force is maintained. Consequently, the photosensitive surface of the photosensitive belt 1 facing the respective image forming means is set at a specific position at all times and carried smoothly at a specific speed by the reduction effect of frictional resistance. Consequently, the performance of each image forming means is displayed sufficiently and a color image of invariably high quality is obtained. |
