Patent ID: 8408668

Claim:
A recording apparatus comprising: a record head which includes an outlet to eject a liquid, a pressure chamber connected to the outlet, and an actuator which is selectively switchable between a small-capacity state in which the capacity of the pressure chamber is V 1 and a large-capacity state in which the capacity of the pressure chamber is V 2 which is larger than V 1 ; and a head driving unit which selectively supplies, to the actuator, ejection drive signals which change the state of the actuator so that the liquid is ejected from the outlet and non-ejection drive signals by which the state of the actuator is changed from the small-capacity state to the large-capacity state and then returns to the small-capacity state, to the extent that no ejection of the liquid occurs from the outlet, wherein, the head driving unit supplies the non-ejection drive signals to the actuator within a single printing cycle, such that, within the single printing cycle, at least one of the following conditions is satisfied: (i) a first time is different for each of the non-ejection drive signals, the first time being a time from an increase timing at which the state of the actuator is changed from the small-capacity state to the large-capacity state to a decrease timing at which the state of the actuator is changed from the large-capacity state to the small-capacity state; and (ii) a second time is different from another second time, the second time and the other second time each being a time ranging from an input of a non-ejection drive signal to an input of a directly-subsequent non-ejection drive signal.