| 摘要 |
A developing apparatus designed to allow toner uniformly charged with a predetermined electric charge to be formed into a toner layer formed on a circumferential surface of a developing roller, and further to allow a good image to remain formed. In order to allow a proper amount of toner having a proper specific electric charge to deposit on the circumferential surface of the developing roller, the blade is bent at a bending angle of at least 45° while being positioned against the circumferential surface of the developing roller when displacement amount DELTAL is at most plus 0.4 mm.
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