Patent ID: 8025377

Claim:
An ink cartridge, comprising: a body, having a plurality of ink chambers for storing ink, the body having a first sidewall, a second sidewall opposite to the first sidewall, a third sidewall, a fourth sidewall opposite to the third sidewall, and a bottom; a channel module, attached to the bottom of the body; a plurality of first engaging parts, comprising a first pair of first engaging parts, the first pair of first engaging parts being respectively arranged at the two corners of the external surface of the bottom of the body and adjacent to the first sidewall; and a plurality of second engaging parts, comprising a first pair of second engaging parts, the first pair of second engaging parts being respectively arranged at two corners of the channel module and corresponding to the first pair of first engaging parts, wherein the relative position of the body and the channel module on a two-dimension plane is substantially fixed by the engagement of the first engaging parts and the second engaging parts, the first engaging parts further comprise a second pair of first engaging parts, and the second pair of first engaging parts are arranged on the external surface of the bottom of the body and are arranged in a way substantially parallel to and away from the first sidewall, and the second engaging parts further comprise a second pair of second engaging parts, and the second pair of second engaging parts are arranged on the channel module and are respectively arranged corresponding to the second pair of first engaging parts so as to respectively engage with the second pair of first engaging parts.