IMAGE FORMING APPARATUS

An image forming apparatus includes a rotatable photosensitive member; a charging portion, an exposure portion, a developing member, a transfer unit, a contact and separation portion, a charging voltage applying portion, a detecting portion, and a controller. The controller is capable of executing a...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: Mizukoshi, Shunsuke, Hagiwara, Kazunari, Funaki, Shoko
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:An image forming apparatus includes a rotatable photosensitive member; a charging portion, an exposure portion, a developing member, a transfer unit, a contact and separation portion, a charging voltage applying portion, a detecting portion, and a controller. The controller is capable of executing an operation in an image forming mode and an operation in a detecting mode. The controller carries out control so that a charging current flowing through a charging portion during charging of the photosensitive member in the operation in the detecting mode is lower than a charging current flowing through the charging portion during charging of the photosensitive member in the operation in the image forming mode.