Patent ID: 8449056
Filing Date: 2013-05-28
Classification: B41J

Abstract:
1. A driving method of a liquid discharge head which includes a discharge port for discharging liquid, a flow path that is communicated with the discharge port, a first actuator provided on the flow path, a second actuator provided at a position further from the discharge port than the first actuator on the flow path, and a common liquid chamber that is communicated with the flow path, the driving method comprising: contracting the flow path and then expanding the flow path by the first actuator to discharge liquid from the discharge port; starting contraction of the flow path by the second actuator when or before a flow of liquid directed from the common liquid chamber to the discharge port in the flow path in a vicinity of the second actuator, disappears to allow a meniscus of liquid, which is located at an inner position of the flow path, to project outward from the discharge port; and starting the expansion of the flow path by the second actuator while the meniscus of liquid projects outward from the discharge port, wherein, as the liquid discharge head, a liquid discharge head is used which includes a first opening provided in the vicinity of the second actuator so as to be communicated with the flow path, a second opening which is provided at a position closer to the discharge port than the first opening so as to be communicated with the flow path and which has a smaller area than the first opening, and a second flow path which allows the first and second openings to be communicated with each other.