Patent ID: 8500262

Claim:
An inkjet recording device comprising: an inkjet head to eject an ink in a pressure chamber; an ink supply path to supply the ink from an ink supply source to the pressure chamber of the inkjet head, wherein at least a part of the ink supply path comprises an ink supply pipe; and an air retaining member configured to be inserted in an interior of the ink supply pipe in a state in which the ink can be communicatively connected, to retain air in at least a part of a space formed between an inner surface of the ink supply pipe and the air retaining member; wherein the air retaining member comprises a contact portion for making contact with the inner surface of the ink supply pipe; wherein a groove portion communicatively connected to the space is formed in the contact portion; wherein an atmospheric air communication hole to communicatively connect the space to the atmosphere via the groove portion is formed at a position corresponding to the groove portion in the ink supply pipe; and wherein the inkjet recording device further comprises an opening and closing member for opening and closing the atmospheric air communication hole.