Patent ID: 9056480
Filing Date: 2015-06-16
Classification: B41J

Abstract:
1. A fluid ejection device comprising: a fluid ejection head; a main tank that stores a fluid to be ejected from the fluid ejection head; a subtank for supplying the fluid to the fluid ejection head; a pressure adjustment chamber disposed in a fluid path from the subtank to the fluid ejection head; a backflow prevention valve disposed in the fluid path on an upstream side of the pressure adjustment chamber; and a fluid refilling mechanism for refilling the subtank with the fluid from the main tank; wherein the fluid refilling mechanism comprises: a diaphragm that changes a volume of the subtank; an elastically deformable member connected to the diaphragm; a lever, one end of which is connected to the diaphragm through the elastically deformable member, that pulls the diaphragm to a maximum capacity side of the subtank through the elastically deformable member; a motor; a pressure member that is supported movably in a pushing direction that pushes an other end of the lever; and a drive member that drives the pressure member in the pushing direction according to an output rotation of the motor; wherein the lever is configured to move corresponding to an amount of the fluid in the subtank and the pressure member pushes the other end of the lever to refill the subtank with the fluid from the main tank.