Patent ID: 7661783

Claim:
An inkjet recording apparatus comprising: a pressurizing actuator; a passage unit in which a pressure chamber whose volume is changed by the pressurizing actuator and an ejection opening for ejecting ink are formed, the passage unit having a first ink passage which extends from an outlet of the pressure chamber to the ejection opening; and a controller controlling the pressurizing actuator in such a manner that the pressure chamber changes from a first state where a volume of the pressure chamber is V 1 to a second state where the volume is V 2 which is larger than V 1 and then returns from the second state to the first state to cause ink to be ejected from the ejection opening, that a time length Tv 1 from a time point at which the pressure chamber starts to change from the first state to the second state to a time point at which the pressure chamber is in the second state becomes 33% or more of a characteristic vibration period Td of ink filled in the first ink passage, and that the time length Tv 1 becomes 83% or less of the characteristic vibration period Td.