Patent ID: 7789038

Claim:
An ejection inspection device provided in a liquid droplet ejection apparatus having an imaging device which drives a functional liquid droplet ejection head to eject functional liquid so as to perform an imaging process on a workpiece while relatively moving the functional liquid droplet ejection head, the ejection inspection device being used to inspect ejection failures of the functional liquid droplet ejection head and comprising: an inspection sheet which is formed in a strip shape and receives an inspecting ejection from the functional liquid droplet ejection head; an inspection stage on which the inspection sheet is sucked and mounted and which communicates with a vacuum suction unit for sucking the inspection sheet and with an air supply unit for floating the inspection sheet; a sheet feeding mechanism which is disposed on one end side of the inspection stage and feeds the inspection sheet wound in a roll form onto the inspection stage; a sheet taking-up mechanism which is disposed on the other end side of the inspection stage and takes up the fed inspection sheet from the inspection stage; a suction air valve unit which is interposed between the inspection stage and the vacuum suction unit and controls the suction air of the inspection stage; a floating air valve unit which is interposed between the inspection stage and the air supply unit and controls the floating air of the inspection stage; and a control unit which controls the suction air valve unit, the floating air valve unit, the sheet feeding mechanism, and the sheet taking-up mechanism, wherein the control unit floats the inspection sheet for performing the feeding operation of the inspection sheet and the taking-up operation thereof and alternately sucks the inspection sheet first from the other end side of the inspection stage and then from the one end side of the inspection stage.