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. <IMAGE> <IMAGE>