Liquid droplet spraying apparatus and method
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United States of America Patent
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Mar 5, 2013
Grant Date -
Nov 24, 2011
app pub date -
Feb 11, 2009
filing date -
Jan 12, 2009
priority date (Note) -
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Abstract
The liquid droplet spraying apparatus includes a chamber containing a fluid; a nozzle body having a nozzle for spraying the fluid in the chamber to one side of a material to be printed; an electrostatic spray module which is arranged in the vicinity of the chamber or the nozzle, and which forms an electrostatic field for the fluid contained in the chamber to provide a first spray force for spraying the fluid via the nozzle to form a liquid droplet; a physical spray module which is arranged in the chamber and opposite the nozzle, and which provides a second spray force for assisting the first spray force when the first spray force is generated; and a control unit for controlling the electrostatic spray module and the physical spray module such that the first spray force and the second spray force can be provided in a specific pattern.
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