Liquid drop emitter
Optical alignment of masks for X-ray lithography
Plate lens and a method for manufacturing the same
Nozzleless liquid droplet ejectors
Spatially addressing capillary wave droplet ejectors and the like
Spatial stablization of standing capillary surface waves
Capillary wave controllers for nozzleless droplet ejectors
Microlenses for acoustic printing
Acoustic lens arrays for ink printing
Planarized printheads for acoustic printing
ApplicationNo. 349296 filed on 12/05/1994
US Classes:347/46, Free surface347/19, Measuring and testing (e.g., diagnostics)359/619By surface composed of lenticular elements
ExaminersPrimary: Reinhart, Mark J.
International ClassB41J 002/04
AbstractAcoustic printheads having an optically transparent substrate, at least two optical lenses, which may be part of the substrate, and a first structure, which may also be part of the substrate. The optical lenses focus light which irradiates the substrate into optical focal points at known locations relative to the first structure. The first structure may be part of an acoustic droplet ejector which includes an acoustic lens that is fabricated on the optically transparent substrate. The optical focal points can be used to precisely align the first structure with another structure.