Developing cartridges with fixed protrusions and manufacturing method thereof

摘要

Developing cartridges include a main body, a developer transport member, and a developer thickness regulating member. The main body includes a first and second side portions separated from each other along a direction. The developer thickness regulating member regulates a developer thickness and extends in a direction between the first and second side portions. The developer thickness regulating member includes an end portion, which is disposed near the first side portion, and a first protrusion, which extends along the particular direction from the end portion to at least the first side portion. The main body forms a cavity in the first side portion. The cavity is defined by at least a first surface, a second surface opposing the first surface, and a second protrusion that protrudes from the first surface toward the second surface. The first protrusion is fixed at a position between the second protrusion and the second surface.

主权项

1. A developing loping cartridge comprising:
a main body comprising a first side portion and a second side portion separated from the first side portion along a first direction; a developer transport member configured to rotate about a rotational axis extending in the first direction and to transport developer; and a developer thickness regulating member configured to regulate a thickness of the developer transported by the developer transport member, the developer thickness regulating member extending in the first direction between the first side portion of the main body and the second side portion of the main body, and the developer thickness regulating member comprising:
a first end portion near the first side portion of the main body;a second end portion near the second side portion of the main body, the second end portion opposite to the first end portion along the first direction; anda first protrusion extending along the first direction from the first end portion of the developer thickness regulating member to at least the first side portion of the main body, wherein the main body forms a cavity in the first side portion of the main body, the cavity defined by at least:
a lower surface;an upper surface that opposes the lower surface and is disposed a first distance from the lower surface; anda second protrusion that protrudes from the lower surface of the cavity toward the upper surface of the cavity, and wherein the first protrusion is fixed at a position between the second protrusion and the upper surface of the cavity.