US 12,271,146 B2
Process cartridge
Noriyuki Komatsu, Shizuoka (JP); Tomonori Mori, Kanagawa (JP); Teruhiko Sasaki, Shizuoka (JP); Makoto Hayashida, Shizuoka (JP); Naoki Maeda, Shizuoka (JP); and Satoru Harada, Aichi (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Jul. 12, 2023, as Appl. No. 18/350,844.
Application 18/350,844 is a continuation of application No. 17/883,727, filed on Aug. 9, 2022, granted, now 11,740,585.
Application 17/883,727 is a continuation of application No. 17/317,141, filed on May 11, 2021, granted, now 11,454,924, issued on Sep. 27, 2022.
Application 17/317,141 is a continuation of application No. 17/123,308, filed on Dec. 16, 2020, granted, now 11,029,640, issued on Jun. 8, 2021.
Claims priority of application No. 2019-235594 (JP), filed on Dec. 26, 2019.
Prior Publication US 2023/0350340 A1, Nov. 2, 2023
Int. Cl. G03G 21/18 (2006.01); G03G 15/08 (2006.01)
CPC G03G 21/1814 (2013.01) [G03G 15/0891 (2013.01); G03G 21/1842 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A process cartridge configured to be attachable to and detachable from an apparatus body of an image forming apparatus, the cartridge comprising:
a drum unit including:
a photosensitive drum configured to be rotatable;
a pressing portion; and
a frame, and
a developing unit detachably attached to the drum unit, the developing unit including:
a developing roller configured to be rotatable about a first rotational axis;
a toner accommodating portion configured to accommodate toner;
a stirring member provided in the toner accommodating portion, the stirring member being configured to stir the toner and be rotatable about a second rotational axis extending in a direction along the first rotational axis of the developing roller;
a grip portion; and
a pressed portion configured to be pressed by the pressing portion of the drum unit in a direction in which the developing roller approaches the photosensitive drum,
wherein in a case where the cartridge is oriented in an attachment direction in which the cartridge is attached to the apparatus body, when viewed in a direction of the first rotational axis of the developing roller,
(i) the grip portion, the pressed portion, the stirring member, the developing roller, and the photosensitive drum are disposed in this order in the attachment direction,
(ii) the grip portion is disposed above the second rotational axis of the stirring member, and the pressed portion is disposed below the second rotational axis of the stirring member,
(iii) a wall surface portion constituting a part of the toner accommodating portion and provided between the grip portion and the pressed portion in the attachment direction, the wall surface portion extending downward to the pressed portion toward the attachment direction, and
(iv) the grip portion extends upward beyond the topmost of the frame of the drum unit.