Patent ID: 7399051
Filing Date: 2008-07-15
Classification: B41J

Abstract:
1. An ejection device for coating a target section of a base body with a liquid material, comprising: a stage for mounting the base body; a head having a plurality of ejection nozzles, each of the plurality of ejection nozzles belonging to either one of a first nozzle train or a second nozzle train, the first nozzle train extending in an X axis direction and the second nozzle train extending in the X axis direction and substantially parallel to and spaced apart from the first nozzle train along a Y axis direction that is substantially perpendicular to the X axis direction; a first nozzle group including three nozzles from the first nozzle train and two nozzles from the second nozzle train; a second nozzle group including one nozzle from the second nozzle train, the second nozzle group disposed adjacent to the first nozzle group in the X axis direction; and a scan section for moving at least one of the stage and the head relative to the other along the Y axis perpendicular to the X axis during first and second scan periods, the scan section moving at least one of the stage and the head relative to the other in a first direction along the Y axis during the first scan period and moving at least one of the stage and the head relative to the other in a second direction opposite the first direction along the Y axis during the second scan period; wherein each of the ejection nozzles forming the first nozzle group is positioned in an ejectable range of the target section along the X axis direction during the first scan period, each of the ejection nozzles forming the second nozzle group is positioned out of the ejectable range during the first scan period, the scan section moves at least one of the stage and the head relative to the other in the X axis direction in a period between the first scan period and the second scan period so as to position each of the ejection nozzles forming the second nozzle group in the ejectable range, and the head selectively ejects the liquid material to the target section from the ejection nozzles forming the first nozzle group in the first scan period, and selectively ejects the liquid material to the target section from the ejection nozzles forming the second nozzle group in the second scan period.