| 摘要 |
A developing device for developing a latent image formed on an image bearing member by using developer, the developing device including: a developing frame; a developing roller for supplying developer to the latent image to develop the latent image; a developer layer regulating member which regulates a layer thickness of developer on a circumferential surface of the developing roller; and a first surface and a second surface which are provided in the developer layer regulating member along a longitudinal direction of the developer layer regulating member, for positioning the developer layer regulating member with respect to the developing frame, in which a first imaginary plane, which is obtained by extending the first surface imaginarily, and a second imaginary plane, which is obtained by extending the second surface imaginarily, intersect with each other.
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