LIQUID EJECTION DEVICE AND METHOD FOR ADJUSTING FRICTION OF LIQUID FLOW CHANNEL IN THE LIQUID EJECTION DEVICE

摘要

PROBLEM TO BE SOLVED: To cause a supply flow channel supplying an ink to a head to suitably supply liquid in accordance with the liquid ejection performance of a liquid ejection head without changing a component constituting the supply flow channel.SOLUTION: An inkjet recording device 1 comprises: a tank body 8 storing an ink; an ink ejection head 4 into which the ink in the tank body 8 is supplied; a head mechanism reciprocating the head 4; and an ink supply flow channel which communicates the tank body 8 with the head 4 and is configured to supply the ink in the tank body 8 to the head 4. A part of the ink supply flow channel is comprised of a tube 2 having a deformation part 20 which bends and deforms with the movement of the head 4. A friction-imparting body 7 imparting a flow channel friction to the ink is provided at a place except the deformation part 20 of the ink supply flow channel. The friction-imparting body 7 has a cross section-constant portion 70 in which a cross-section shape is constant over the length equal to or more than the inner diameter of the ink supply flow channel in an ink flow direction.