Microlenses for acoustic printing

Details Microlenses for acoustic printing Microlenses for acoustic printing

B - Operations, Transporting

41

J

101/96.0208

B41J 2/045 (2006.01) B41J 2/14 (2006.01)

Patent

CA 1292386

ABSTRACT A printhead for an acoustic printer comprises one or more acoustic microlenses, each of which brings an acoustic beam to focus approximately at the free surface of a pool of ink for ejecting individual droplets of ink from the pool on demand. As used herein, an "acoustic microlens" is defined as being an acoustic lens having an aperture diameter which is less than an order of magnitude greater than the wavelength of the incident acoustic wave (i.e., the acoustic wave which illuminates the lens).

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