Ink cartridge and ink jet record apparatus using ink cartridge

摘要

An ink cartridge comprises a container main body 2 storing ink and having a through hole 67 communicating with the atmosphere as the ink cartridge is placed in a record apparatus, and a liquid level sensor 61 being disposed in the vicinity of a corner in the container main body 2 for detecting the ink level. A partition wall 62 to cover the liquid level sensor 61 is disposed in the container main body 2. An upper gap 63 into which an air bubble occurring with ink consumption can be introduced and a lower gap 64 positioned below the upper gap 63 are formed between the partition wall 62 and the inner face of the container main body 2, and a sensor accommodation area 65 communicating with both the gaps 63 and 64 to destroy the air bubble is formed.