| 摘要 |
PROBLEM TO BE SOLVED: To surely carry out abutting and separating in rotation of a developing roll. SOLUTION: In the image forming device carrying out multicolor developing by plural developing devices loaded to a rotating body 15, a member to be engaged 32 that is fixed to a shaft of the developing roll 19 of each developing device, an engaging member 34 that is installed to be able to be separated from and brought into contact with the member to be engaged, a developing roll driving means 27 rotating the engaging member and a press member 42 to press the engaging member to the member to be engaged in the front and the back of a developing position are provided. |
