Patent ID: 8075082
Filing Date: 2011-12-13
Classification: B41J,G02B

Abstract:
1. A liquid droplet ejection apparatus comprising: a writing device that performs writing on a workpiece by ejecting functional liquid from at least one ink jet functional liquid droplet ejection head while moving the functional liquid droplet ejection head relative to the workpiece; a weight measuring device that measures an amount of ejected droplets on the basis of a weight of the functional liquid ejected from the functional liquid droplet ejection head, the weight measuring device being disposed adjacent to the writing device; a controlling device that controls a driving power for the functional liquid droplet ejection head on the basis of a measurement result input from the weight measuring device; and a cleaning device that sucks the functional liquid in the functional liquid droplet ejection head and wipes the functional liquid droplet ejection head, wherein the writing device includes an x-axis table that mounts the workpiece thereon and that moves the workpiece in the x-axis direction and a y-axis table that mounts the functional liquid droplet ejection head thereon and that moves the functional liquid droplet ejection head in the y-axis direction, wherein the cleaning device is disposed in a path of movement of the functional liquid droplet ejection head in the y-axis direction, and wherein the weight measuring device is disposed between the x-axis table and the cleaning device in a path of movement of the functional liquid droplet ejection head.