Patent ID: 7831171

Claim:
A printer cartridge comprising: a. a toner hopper configured to store toner; b. a developer roller housing configured to contain a developer roller; and c. at least one fastener attaching the developer roller housing to the toner hopper, the fastener comprising: i. a fastener body comprising a first side and a second side, the second side being opposite the first side, wherein when the fastener attaches the developer roller housing to the toner hopper, the fastener body is positioned in a slanted manner across a top surface of a developer roller housing wall and a top surface of the toner hopper, such that the fastener body does not contact the top surfaces of the developer roller housing wall and the toner hopper; ii. a curved section attached to the first side of the fastener body, the curved section being configured to hook a portion of the developer roller housing; and iii. an elongate portion attached to the second side of the fastener body and extending from the second side, the elongate portion having a round recess through the elongate portion to accommodate a toner hopper protrusion that can be inserted through the elongate portion, such that surrounding the toner hopper protrusion with the round recess of the elongate portion secures the fastener from movement.