| 摘要 |
There are provided a retaining member 4 having a claw portion 4 a engageable to and disengageable from a recessed portion 15 formed at an ink cartridge mounting portion and a valve body 6 biased by a spring 7 provided at an ink supply port 3 , maintaining a normally closed state and resiliently abutting the claw portion 4 a to the recessed portion 15 by being opened in a state of being inserted with an ink supply needle. Thereby, an ink cartridge providing amounting feeling and dispensing with a spring member for assisting detachment can be provided.
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