Patent ID: 7553007

Claim:
An ink cartridge, comprising: an ink chamber comprising a first wall; an ink dispensing portion disposed within the ink chamber, wherein the ink dispensing portion has a dispensing chamber formed therein, and a first end of the dispensing chamber is positioned adjacent to the first wall, wherein the ink dispensing portion comprises at least one a second wall which bounds the dispensing chamber, and the at least one second wall has an opening formed adjacent to a second end of the dispensing chamber opposite the first end of the dispensing chamber, wherein the dispensing chamber is configured to communicate with the ink chamber via the opening of the at least one second wall; and a rib member extending from an exterior surface of the at least one second wall, wherein the rib member comprises an open end, a closed end rib, a first rib, and a second rib, and the closed end rib of the rib member surrounds the opening of the at least one second wall, wherein the first rib and the second rib of the rib member extends from the closed end rib of the rib member to the open end of the rib member, and the open end of the rib member is positioned adjacent to the first wall.