1. The influence of ink sound speed on waveform
The sound speed of ink with a higher proportion is generally faster, and the sound speed of water-based ink is higher than that of oil-based ink. When employing different densities of ink with the same print head, the optimum wavelength in the waveform should be modified. The wavelength width of driving water-based ink, for example, should be lower than that of driving oil-based ink.
2. Influence of ink viscosity on waveform
When the digital printing machine prints in multi-point mode, it must pause for a few moments after the first driving waveform ends before sending the second waveform, which begins when the natural pressure on the nozzle surface after the first waveform ceases. When the oscillatory change simply fades away. Different ink viscosity affects this decay time, so it’s also important to ensure stable ink viscosity to ensure stable printing. It’s also best to connect when the phase is zero, because otherwise the wavelength of the second wave must be changed to ensure Normal inkjet, which complicates adjusting the best inkjet waveform.
3. Influence of ink density value on waveform
When the ink density value varies, the sound speed varies as well. After the size of the nozzle’s piezoelectric sheet has been determined, the pulse width length of the driving waveform is usually the only thing that can be modified to get the best pulse peak point.
The relationship between the nozzle waveform and the ink is, in general, that the waveforms corresponding to different inks are also distinct, which is mostly influenced by the ink’s sound speed, viscosity, and density.