Patent ID: 8333451

Claim:
A method for precisely depositing a same amount of a particular substance at one or more locations on an object by minimizing first drop dissimilarity, the method comprising: positioning an object in proximity to an inkjet printing device having one or more channels with nozzles such that relative movement between the object and the inkjet printing device is achievable; establishing first acoustic waves within the one or more channels at a preselected frequency and having a first amplitude below a threshold required to create a releasable drop of a particular substance from the nozzle, thereby creating a stable acoustic environment within the one or more channels; and establishing second acoustic waves within the one or more channels at the preselected frequency in an additive relationship to the first acoustic waves to produce resulting acoustic waves having a second amplitude above the threshold to create a releasable drop of a particular substance from the nozzle for deposition on the object.