| 摘要 |
PROBLEM TO BE SOLVED: To provide an optical writing head positioning mechanism that allows a process cartridge and an image formation device to be downsized, while suppressing deterioration in position accuracy of an optical writing head relative to a latent image carrier.SOLUTION: Two spacer members 21a, 21b provided in an optical writing head positioning mechanism 20 are structured in such a manner that the spacer member 21a has two photoreceptor contact surfaces 212a, 213a and the spacer member 21b has two photoreceptor contact surfaces 212b, 213b, the contact surfaces 212a, 213a, 212b, 213b avoiding both end parts of a cleaning area width L3. Further, the space members 21a, 21b are arranged so that the end parts of the cleaning area width L3 on the photoreceptor 3 are positioned between the first photoreceptor contact surface 212a and the second photoreceptor contact surface 213a, and between the first photoreceptor contact surface 212b and the second photoreceptor contact surface 213b, respectively. |
