| 摘要 |
A grid cleaner 35 is fixed to a fixing holder 41 of an apparatus main body in such a way that a wet sponge 38 faces a grid 33 . When a charging device 3 is made to slide in the direction indicated by arrow A, the wet sponge 38 comes into contact with a surface of the grid 33 , thereby removing extraneous matters therefrom. Reference numeral 40 denotes a stopper projection that prevents the charging device 3 from being disconnected from the apparatus main body at times other than during cleaning. The stopper projection 40 extends toward a gap roller 39 side so as to serve as a guide portion 42 that prevents the wet sponge 38 of the grid cleaner 35 and the gap roller 39 from rubbing against each other.
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