US 11,733,639 B2
Image forming apparatus and toner cartridge
Shougo Sato, Seto (JP); and Yasuo Fukamachi, Nagoya (JP)
Assigned to BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed by BROTHER KOGYO KABUSHIKI KAISHA, Nagoya (JP)
Filed on Sep. 13, 2021, as Appl. No. 17/472,763.
Application 17/472,763 is a continuation of application No. 16/421,445, filed on May 23, 2019, granted, now 11,119,438.
Claims priority of application No. 2018-099444 (JP), filed on May 24, 2018.
Prior Publication US 2022/0214642 A1, Jul. 7, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. G03G 15/08 (2006.01); G03G 21/10 (2006.01); G03G 21/12 (2006.01)
CPC G03G 21/105 (2013.01) [G03G 15/0886 (2013.01); G03G 21/12 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A process cartridge comprising:
a drum cartridge including:
a photosensitive drum;
a cleaner configured to remove waste toner from the photosensitive drum;
a developing device including a developing roller which is movable relative to the photosensitive drum, the developing device having an opening;
a waste toner conveying pipe configured to convey the waste toner removed from the photosensitive drum by the cleaner, the waste toner conveying pipe having a waste toner discharge port through which the waste toner is to be discharged;
a frame supporting the photosensitive drum, the cleaner and the developing device; and
a seal member located between the developing device and the waste toner conveying pipe, surrounding the waste toner discharge port and the opening of the developing device, and capable of being deformed when the developing device is moved relative to the photosensitive drum; and
a toner cartridge attachable to and detachable from the drum cartridge, the toner cartridge having a waste toner receiving port through which the waste toner is to be received, the waste toner receiving port communicating with the opening of the developing device in a state where the toner cartridge is attached to the developing device, the toner cartridge including:
a toner container capable of accommodating therein the toner to be supplied to the developing roller; and
a waste toner container capable of accommodating therein the waste toner.