Patent ID: 7237883

Claim:
A recording apparatus, which receives an ink cartridge including an ink supply port formed at a position, offset to one side, of a bottom wall defining in part an ink container; a projecting portion, formed on a lower portion of a first wall out of two opposing walls adjacent to the bottom wall, the projecting portion having an upper surface and a plurality of side portions that have specific and predetermined positions when the cartridge is mounted on the recording apparatus, wherein the first wall is located further from the ink supply port than the other of the two opposing walls is located; a retaining member disposed on the other wall and having an engaging portion located on the retaining member, which said engaging portion engages a corresponding part of the recording apparatus when the ink cartridge is mounted on the recording apparatus; and a plurality of electrodes formed on the projecting portion and which are electrically connected to a memory unit disposed on the ink container, the recording apparatus comprising: a flow path forming member communicating with a recording head, and located at a position which opposes the ink supply port of the ink cartridge when the ink cartridge is received by the recording apparatus, a width direction regulating projecting portion that abuts the side portions of the projecting portion when the ink cartridge is received by the recording apparatus, and a position regulating elastic piece that abuts the upper surface of the projecting portion when the ink cartridge is received by the recording apparatus.