US 12,405,565 B2
Cartridge including a developer storage unit for storing developer
Takuya Kawakami, Mishima (JP); Naoya Asanuma, Susono (JP); Tetsuya Numata, Suntou-gun (JP); and Noriyuki Komatsu, Numazu (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 26, 2023, as Appl. No. 18/359,266.
Application 18/359,266 is a continuation of application No. 17/883,132, filed on Aug. 8, 2022, granted, now 11,762,326.
Application 17/883,132 is a continuation of application No. 16/847,743, filed on Apr. 14, 2020, granted, now 11,435,689, issued on Sep. 6, 2022.
Claims priority of application No. 2019-086877 (JP), filed on Apr. 26, 2019.
Prior Publication US 2023/0367258 A1, Nov. 16, 2023
Int. Cl. G03G 21/16 (2006.01); G03G 21/18 (2006.01)
CPC G03G 21/1647 (2013.01) [G03G 21/1676 (2013.01); G03G 21/1821 (2013.01); G03G 21/1633 (2013.01); G03G 2221/1869 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A cartridge attachable to a main assembly of an image forming apparatus in an attaching direction and detachable from the main assembly in a detaching direction, the main assembly including a discriminating portion, the cartridge comprising:
a photosensitive drum;
a frame configured to support the photosensitive drum so that the photosensitive drum is rotatable about a rotational axis extending in a direction intersecting with the attaching direction;
a developing unit that is attached to the frame and that includes a developing roller configured to supply a developer to the photosensitive drum and a developer accommodating portion configured to accommodate the developer to be borne on the developing roller; and
a developer storage unit including a developer storage portion configured to store the developer,
wherein the developer storage portion is provided with a discharge opening configured to allow discharge of the developer stored in the developer storage portion to the developer accommodating portion and is detachably attached to the developing unit, and
wherein the developer storage unit is provided with a portion-to-be-discriminated which is configured to engage with the discriminating portion of the main assembly when the cartridge is attached to the main assembly and which is provided farther from the photosensitive drum in the detaching direction than an end of the frame located farthest downstream in the detaching direction.