Patent ID: 7636532

Claim:
A charging device switching and executing a first mode which brings a magnetic brush including magnetic particles into contact with a photosensitive member to charge a surface of the photosensitive member and a second mode which collects, using the magnetic brush, a two-component developing agent including a toner and a carrier, which remains on the surface of the photosensitive member, the charging device comprising: a magnetic brush carrying roller configured to carry the magnetic brush into contact with the photosensitive member; a toner collecting roller configured to electrically collect the toner included in the two-component developing agent collected on the magnetic brush according to the execution of the second mode; a toner removing member configured to remove the toner collected by the toner collecting roller from a surface of the toner collecting roller; a regulating member configured to regulate height of bristles of the magnetic brush carried on the magnetic brush carrying roller to be equal to or smaller than a predetermined height; and a carrying unit configured to carry a toner falling from the regulating member in a developing agent regulated by the regulating member and accumulated on the regulating member to a developing device, wherein the toner collecting roller is located further on a downstream side than the regulating member and further on an upstream side than a contact position of the magnetic brush and the photosensitive member in a moving direction of a roller surface of the magnetic brush carrying roller.