Patent ID: 7147309

Claim:
A liquid cartridge for supplying a liquid to a liquid ejecting apparatus through a liquid supplying needle thereof when mounted on said liquid ejecting apparatus, comprising: a liquid accommodating section for containing a liquid; a liquid supplying part, which communicates with said liquid accommodating section, said liquid supplying part including an opening into which the liquid supplying needle of the liquid ejecting apparatus is inserted; and an atmospheric valve for sealing a communicating hole which allows said liquid accommodating section to communicate with atmosphere, said atmospheric valve moving substantially in a direction parallel to a direction in which the liquid supplying needle is inserted into said opening of said liquid supplying part when the liquid cartridge is mounted on said liquid ejecting apparatus, in association with a part of the liquid electing apparatus; an elastic member that urges said atmospheric valve toward said communicating hole to seal said communicating hole; and an atmospheric valve accommodating section for accommodating said atmospheric valve and said elastic member therein, said atmospheric valve communicating with said liquid accommodating section via a passage.