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Drop Modulation by Second Harmonic Using Fresnel Lens in Acoustic Inkjet Printing

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Acoustic Inkjet Printing (AIP) is suitable for jetting a small drop when compared with other available methods because the drop size depends not on the nozzle area but on the frequency of acoustic beam that enables ejection from free liquid surface.

For inkjet printing, drop modulation is the major technology being effective to realize both high image quality and high print speed. In the previous reports regarding AIP, multiple droplets were fired at the same location on paper for gray scale of image.1 This method could enhance image quality at the sacrifice of print speed.

Here we propose a method of drop size modulation in AIP to achieve both high image quality and high print speed. It has been proved that the drop size is modulated by a second harmonic on fresnel lens without changing the liquid level and other dimensions. This report also shows that calculations and experiments ascertained drop modulation by the second harmonic.

Document Type: Research Article

Publication date: January 1, 2001

More about this publication?
  • For more than 25 years, NIP has been the leading forum for discussion of advances and new directions in non-impact and digital printing technologies. A comprehensive, industry-wide conference, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems, including drop-on-demand ink jet, wide format ink jet, desktop and continuous ink jet, toner-based electrophotographic printers, production digital printing systems, and thermal printing systems, as well as the engineering capability, optimization, and science involved in these fields.

    Since 2005, NIP has been held in conjunction with the Digital Fabrication Conference.

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