Patent ID: 8651647
Filing Date: 2014-02-18
Classification: B41J

Abstract:
1. A liquid ejecting apparatus comprising: a liquid ejecting head that ejects a liquid from a plurality of nozzles; a liquid supply passage that supplies the liquid from an upstream side which is a liquid supply source side toward a downstream side which is the nozzle side; a pump that is able to suck the liquid from the downstream side toward the upstream side by sucking the liquid in the liquid supply passage and discharge the liquid to the liquid supply passage; a reservoir that communicates with the downstream side of the liquid supply passage, the reservoir that is provided in the liquid ejecting head to extend along the plurality of nozzles, and the reservoir that has an inner surface of upper wall with a center and two end portions one on each side of the center, the upper wall which is being obliquely formed such that two end portions are higher than the center; a valve located in the liquid supply passage between the pump and the reservoir; a liquid filtration unit that clarifies the liquid in the liquid supply passage; and a circulation passage comprising: a control unit that closes the valve and drives the pump to perform a sucking operation creating negative pressure in the supply passage upstream of the valve, then opens the valve to suck the liquid in the liquid supply passage to the pump, and drives the pump to perform a discharging operation to discharge the liquid sucked to the pump by the sucking operation of the pump to the liquid supply passage, thereby supplying the liquid clarified by the liquid filtration unit to the nozzle side.