US 12,228,877 B2
Process cartridge and image forming apparatus
Hiroyuki Munetsugu, Kanagawa (JP); Ryota Shibuya, Kanagawa (JP); and Goshi Ozaki, Kanagawa (JP)
Assigned to Canon Kabushiki Kaisha, Tokyo (JP)
Filed by CANON KABUSHIKI KAISHA, Tokyo (JP)
Filed on Sep. 1, 2023, as Appl. No. 18/241,266.
Application 18/241,266 is a division of application No. 17/965,055, filed on Oct. 13, 2022, granted, now 11,796,958.
Application 17/965,055 is a division of application No. 17/299,353, granted, now 11,567,445, issued on Jan. 31, 2023, previously published as PCT/JP2019/051649, filed on Dec. 26, 2019.
Claims priority of application No. 2018-247839 (JP), filed on Dec. 28, 2018.
Prior Publication US 2023/0408970 A1, Dec. 21, 2023
Int. Cl. G03G 21/16 (2006.01); G03G 21/18 (2006.01)
CPC G03G 21/1814 (2013.01) [G03G 21/1821 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A process cartridge detachably mountable to a main assembly of an image forming apparatus in a mounting direction, the process cartridge comprising:
a photosensitive drum unit provided with (i) a photosensitive drum that is rotatable about a first rotational axis, (ii) a first positioning portion configured to position the process cartridge relative to the main assembly in the mounting direction, the first positioning portion being provided on a side of an end portion of the process cartridge in a direction of the first rotational axis, (iii) a second positioning portion configured to position the process cartridge relative to the main assembly to restrict a rotation of the process cartridge relative to the main assembly, the second positioning portion being provided on an upstream side of the first positioning portion in the mounting direction and on the side of the first end portion in the direction of the first rotational axis, and (iv) a first driving force receiving portion configured to receive a driving force from the main assembly to rotate the photosensitive drum about the first rotational axis;
a developing unit including a developing roller rotatable about a second rotational axis, the developing unit being provided with (i) a memory having a contact surface electrically contactable to a main assembly contact of the main assembly to communicate with the main assembly and provided on the side of the end portion in the direction of the first rotational axis, (ii) a supported portion supported by the photosensitive drum unit such that the developing unit is capable of rotating relative to the photosensitive drum unit, and (iii) a second driving force receiving portion configured to receive a driving force from the main assembly to rotate the developing roller about the second rotational axis, the second driving force receiving portion being provided farther from a center of the developing roller in the direction of the second rotational axis than the first driving force receiving portion is from the center of the developing roller; and
an urging member configured to urge the developing unit such that the developing roller is moved closer to the photosensitive drum unit,
wherein, as seen in the direction of the first rotational axis, a line segment connecting a center of the first positioning portion and a center of the second positioning portion and a linear line passing through the contact surface and perpendicular to the contact surface intersect with each other at an intersection, and
wherein the intersection is located at a position closer to the second positioning portion than to the first positioning portion.