| 摘要 |
PURPOSE:To prevent the generation of a set position discrepancy of each developing device unit by constituting the titled device so that installation setting of the developing device unit becomes an impossible or incomplete state, when the developing device unit is not a developing device unit corresponding to a position where it is to be set on a rotation supporting body. CONSTITUTION:When a developing device unit to be installed and set is not a prescribed developing device unit corresponding to a position where it is to be set, on a rotation supporting body, for instance, even if it is tried to install, for instance, a yellow developing device unit 101Y of other color, to a block chamber 301M of the rotation supporting body to which a magenta developing device unit 101M is to be installed and set, positions of a replenishing toner receiving part 1011Y of its developing device, and a toner replenishing toner part opening 304M of the block chamber 301M side do not correspond to each other and become a relation of discrepancy. Also, the unit 101Y is not held in the block chamber 301M and installation setting becomes impossible by any means. In such a way, an operator becomes aware easily of the set position discrepancy, and the generation of the set position discrepancy is prevented strictly. |
