| 摘要 |
PROBLEM TO BE SOLVED: To provide a unit for a developing device capable of reducing density unevenness in the conveyance direction of a recording medium and improving image quality by reducing the fluctuations of an interval between a photoreceptor drum and the cylindrical part (basic diameter part) of a developing roller and to provide the developing device using the unit for the developing device and a process cartridge.SOLUTION: The unit for the developing device used for the developing device being for developing an electrostatic latent image formed on the photoreceptor drum by using a developer and including the developing roller energized in a direction to come close to the photoreceptor drum includes an attachment part attached to at least a part of the developing device, a first shape part including a first contact surface coming into contact with the basic diameter part of the developing roller on the end side in the axial direction of the developing roller, and a second shape part including a second contact part coming into contact with the outer peripheral part of the photoreceptor drum with which the first shape part does not come into contact on the end side in the axial direction of the developing roller, and guarantees the interval between the developing roller and the photoreceptor drum. |
