| 摘要 |
PROBLEM TO BE SOLVED: To provide a developing apparatus configured to prevent density of a print image from being reduced after long-time use, even when developer containing titanium oxide is used, and an image forming apparatus.SOLUTION: A developing apparatus 10 includes: a developing roller 2 as a developer carrier; a supply roller 3 as a developer supply member; and a developing blade 5 as a developer layer forming member. The developing roller 2 includes an elastic layer 22, and a surface layer 23 covering the elastic layer 22. The supply roller 3 supplies developer to the developing roller 2. The developing blade 5 forms a developer layer on a surface of the developing roller 2. The developer contains titanium oxide. A dynamic friction coefficient μ of the developing roller 2 satisfies 0.6≤μ≤1.2. |
