US 11,733,644 B2
Cartridge and image forming apparatus
Noriyuki Komatsu, Numazu (JP); Masaki Ojima, Mishima (JP); Daisuke Abe, Suntou-gun (JP); Tomonori Mori, Numazu (JP); Tadayuki Tsuda, Susono (JP); Tetsuya Numata, Suntou-gun (JP); and Naoya Asanuma, Susono (JP)
Assigned to CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Nov. 19, 2021, as Appl. No. 17/531,080.
Application 17/531,080 is a continuation of application No. 16/853,212, filed on Apr. 20, 2020, granted, now 11,209,773.
Claims priority of application No. 2019-086876 (JP), filed on Apr. 26, 2019.
Prior Publication US 2022/0075313 A1, Mar. 10, 2022
Int. Cl. G03G 21/18 (2006.01); G03G 21/16 (2006.01)
CPC G03G 21/1814 (2013.01) [G03G 21/1671 (2013.01); G03G 21/1821 (2013.01); G03G 21/1853 (2013.01); G03G 21/1864 (2013.01); G03G 21/1878 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A cartridge detachably mountable on an apparatus body of an image forming apparatus, the cartridge comprising:
a development unit including:
a developing frame including a toner storage portion configured to store a toner,
a development roller configured to rotate around a rotational axis extending in a first direction, and
a development memory including a first electrode contact surface provided on a first end side of the developing frame in the first direction; and
a drum unit on which the development unit is detachably mountable, the drum unit including:
a photosensitive drum,
a drum frame supporting the photosensitive drum,
a drum memory including a second electrode contact surface provided on a second end side, which is the same side as the first end side of the developing frame, of the drum frame in the first direction, and
a portion-to-be-guided configured to be guided by the apparatus body during mounting of the cartridge on the apparatus body, the portion-to-be-guided protruding from an end surface of the drum frame on the second end side in the first direction,
wherein in a mounted state where the development unit is mounted on the drum unit, the first electrode contact surface is provided between the development roller and the second electrode contact surface in a second direction, which intersects with the first direction, and
wherein in the mounted state, the portion-to-be-guided is provided between the development roller and the second electrode contact surface in the second direction.