Patent ID: 7090344

Claim:
An ink cartridge for use in an ink jet recording apparatus, comprising: a container body having a first side wall, a second side wall, a third side wall, and a bottom wall, wherein said first side wall, said second side wall, and said third side wall are formed at respective edges of said bottom wall to form exterior walls of the container body, wherein said container body houses an ink absorbing member for absorbing ink in an ink chamber; an ink supply port which communicates said ink chamber to a recording head, wherein said ink supply port is formed on the bottom wall and is positioned close to the first wall; the second side wall disposed opposite to the first side wall; at least one rib formed inside the ink chamber so as to be parallel to the third side wall and to protrude from the second side wall to said ink supply port; and wherein said ink absorbing member is supported by said first side wall and said rib.