Toner drum gear projection

摘要

A toner drum drive assembly is configured to engage a drive mechanism of a printer. The assembly includes a support portion defining an axis, and a drive projection extending axially from the support portion. The drive projection includes three radially outwardly and circumferentially extending arm portions, with each arm portion having an end. The drive projection defines three undercuts, and each undercut is positioned axially between the support portion and a respective arm portion end.

主权项

1. A toner drum drive assembly comprising:
a support portion defining an axis and including an end face; and a drive projection extending axially from the support portion and defining an end surface, the drive projection including three radially outwardly and circumferentially extending arm portions, each arm portion having an end, and the drive projection defining three undercuts, each undercut positioned axially between the support portion and a respective arm portion end, wherein the drive projection includes three substantially planar first sides and three substantially planar second sides extending parallel to the axis and arranged about the axis in an alternating manner, wherein each second side includes a generally radially outwardly opening groove having a substantially semi-circular cross-section and extending axially from the end face of the support portion to the end surface of the drive projection, wherein each first side resides in a respective first side plane, and wherein the first side planes define a first equilateral triangle when viewed along the axis, and wherein each second side resides in a respective second side plane, wherein the second side planes define a second equilateral triangle when viewed along the axis, and wherein the second equilateral triangle is rotated about the axis relative to the first equilateral triangle.