Continuous inkjet technology is represented by charge modulation type. The principle of this kind of inkjet printing is to use a piezoelectric drive device to apply a fixed pressure to the ink in the nozzle, so that it can be ejected continuously. For recording, the vibration signal of the oscillator is used to excite the jet to generate ink droplets, and the size and spacing of the ink droplets are controlled. The printing information from the character generator and the analog modulator controls the charge on the control telegram to form charged and uncharged ink drops, and then the deflection electrode changes the flying direction of the ink drops to make the ink drops that need to be printed Fly to the paper to generate character/graphic records. Ink droplets that do not participate in the recording are recovered by the catheter. For the deflection electrodes, some systems use two pairs of mutually perpendicular deflection electrodes to perform two-dimensional deflection on the ink drop printing position; some systems use multi-dimensional control of the deflection electrodes, that is, multi-dimensional deflection.
This continuous circulation inkjet system. It can generate high-speed ink drops, so the printing speed is high, and plain paper can be used. Different printing media can obtain high-quality printing results, and it is easy to realize color printing. However, the structure of this inkjet printer is more complicated than the random type: a pressurizing device is needed for the ink, and the terminal must have a recycling device that does not participate in the recording. And the working method is not efficient enough and not precise. Inkjet printers using this technology have been rarely seen.
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