Patent ID: 7101028

Claim:
An ink cartridge for an ink-jet recording device including a closing mechanism that includes a pressing member, comprising: first and second ink bags adapted to hold ink therein; an ink channel formed between said first and second ink bags, said ink channel allowing said first ink bag to be supplied with the ink from said second ink bag; said ink channel being made of flexible material and capable of being opened and closed by the closing mechanism of the ink-jet recording device; an ink flow enhancing mechanism that allows the ink to flow smoothly through said ink channel when said ink channel is not closed by the closing mechanism; and a cartridge case, said first and second ink bags and said ink channel being placed within said cartridge case, wherein the ink flow enhancing mechanism includes a recess that receives the ink channel, when the pressing member of the closing mechanism presses the ink channel against a portion of the cartridge case to close the ink channel.