INK SUPPLY DEVICE FOR INKJET PRINTER, AND REVERSE FLOW BLOCKING DEVICE FOR SAME

摘要

An ink supply device for an inkjet printer is provided with a backflow shutoff mechanism (200). The backflow shutoff mechanism (200) is disposed on a line (177) as an air passage which connects a pressure control means for adjusting the inner pressure of a sub tank (120) and the sub tank (120) to allow the pressure control means to adjust the inner pressure of the sub tank (120), and closes the line (177) to shut off inflow of ink toward the pressure control means side when the inner pressure of the sub tank (120) is reduced to a negative pressure by said pressure control means through the line (177) and the ink stored in the sub tank (120) flows out into the line (177).