| 摘要 |
PROBLEM TO BE SOLVED: To provide an image formation device capable of improving operability of moving a development apparatus from a second position to a first position.SOLUTION: After replacement of a photosensitive drum 13, a development unit 11 is moved from a second position (separation position) to a first position (development position). A rotation pressurizing section 8, while rotating in contact with a guide section 10, is guided to a first portion 10a to position the development unit 11 to the first position and guided to a second portion 10b to position the development unit 11 to the second position. A pressure spring 16 can bias a development roller 12 to the photosensitive drum 13. The guide section 10 has a third portion 10c between the first portion 10a and the second portion 10b. The distance from the third portion 10c to a rotation center of the rotation pressurizing section 8 is shorter than that from the first portion 10a to the rotation center of the rotation pressurizing section 8.SELECTED DRAWING: Figure 13 |
