Patent ID: 9348307
Filing Date: 2016-05-24
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: a main frame; a first process cartridge including: a second process cartridge including: a cartridge-supporting body configured to support the first process cartridge and the second process cartridge and movable between an internal position inside the main frame and an external position outside the main frame in a moving direction; a belt unit including a belt configured to confront the first process cartridge and the second process cartridge when the cartridge-supporting body supporting the first process cartridge and the second process cartridge is in the internal position; a contact-separation mechanism configured to move the cartridge-supporting body between a contact position where the first photosensitive drum and the second photosensitive drum are in contact with the belt and a separated position where the first photosensitive drum and the second photosensitive drum are out of contact with the belt when the cartridge-supporting body supporting the first process cartridge and the second process cartridge is in the internal position; and a collective conveying unit provided in the main frame and configured to convey collectively the waste toner collected from the first photosensitive drum by the first drum-cleaning unit and the waste toner collected from the second photosensitive drum by the second drum-cleaning unit, the collective conveying unit having a first inlet and a second inlet, the first inlet and the second inlet being respectively aligned with the first communication hole and the second communication hole when the cartridge-supporting body supporting the first process cartridge and the second process cartridge is located at the contact position.