Patent Number: 8,879,929

Title: Image forming apparatus

Abstract: An image forming apparatus includes a photosensitive member; a corona charger, provided with an opening, for electrically charging the photosensitive member; a sheet-like shielding member for shielding the opening of the corona charger; a moving device for moving the shielding member in a longitudinal direction of the photosensitive member; a potential sensor for detecting a potential of a portion of the photosensitive member chargeable by the corona charger; and a controller for detecting, on the basis of a result of detection of the potential of the portion of the photosensitive member by the potential sensor, whether or not a charging operation capable of electrically charging the photosensitive member by the corona charger is performed in a state in which the shielding member is located between the opening of the corona charger and the photosensitive member.

Inventors: Ariizumi; Osamu (Matsudo, JP)

Assignee: Canon Kabushiki Kaisha

International Classification: G03G 15/02 (20060101)

Expiration Date: 2019-11-04 0:00:00