Patent ID: 9052641
Filing Date: 2015-06-09
Classification: G03G

Abstract:
1. A developing cartridge comprising: a frame defining a developer chamber therein for accommodating developer, the frame having an opening elongated in a longitudinal direction for allowing the developer to flow out of the developer chamber, the frame comprising: a developing roller assembled to the frame at a position opposite to the developer chamber with respect to the opening, the developing roller being configured to rotate in the rotating direction; a pair of side seals interposed between the developing roller and the frame; a lower seal extending in the longitudinal direction and interposed between the developing roller and the frame, the lower seal having lateral end portions in the longitudinal direction, each lateral end portion being connected to each of the pair of side seals in the longitudinal direction, the lower seal comprising: a protrusion protruding into the lower seal from the third wall of the frame in a protruding direction crossing the longitudinal direction, the protrusion being configured to restrict the lower seal from moving in the longitudinal direction, the protrusion having a distal end positioned between the first surface and the second surface, wherein the protrusion has a sloped surface that slopes obliquely toward the second wall of the frame to form an acute angle with the third wall of the frame.