An ink jet cartridge comprising an ink container which comprises a bottom portion and an upper portion, said bottom portion being in communication with the printhead through an ink supply port, and said upper portion being in communication with a vent hole, wherein said bottom portion comprises a first ink absorbing member, and said upper portion comprises a second ink absorbing member, wherein said first ink absorbing member is a compressible porous material and said second ink absorbing member is an incompressible porous material, and wherein the capillarity of said first ink absorbing member is higher than the capillarity of said second ink absorbing member.