Inkjet printers are classified according to principles

Inkjet printers are commonly used equipment in the packaging industry. They are divided into different types according to the needs of different industries and different principles. Shandong inkjet printer dealers will introduce the classification of inkjet printers according to their principles.
Continuous inkjet technology
Under the pressure of the ink supply pump, the ink passes from the ink tank through the ink pipeline, adjusts the pressure and viscosity, and enters the spray gun. As the pressure continues, the ink is ejected from the nozzle. When the ink passes through the nozzle, the action of the piezoelectric crystal breaks it into a series of continuous ink droplets with equal spacing and the same size. The jet ink flow continues to move downward and is charged through the charging electrode. In the charging electrode, the ink droplets are separated from the ink line. come out. A certain voltage is applied to the charging electrode. When the ink droplets are separated from the conductive ink line, they will instantly carry a negative charge that is proportional to the voltage applied to the charging electrode. By changing the voltage frequency of the charging electrode so that it is the same as the frequency at which the ink droplets break, each ink droplet can be charged with a predetermined negative charge. Under the continuation of the pressure, the ink flow continues to move downward, from two separate The deflection plate with positive and negative voltages passes through the middle. The charged ink droplets will be deflected when passing through the deflection plate. The degree of deflection depends on the amount of charge. The uncharged ink droplets will not be deflected and will fly downward and flow into the recovery tube. , and finally returned to the ink tank through the recycling pipeline for recycling. The charged and deflected ink droplets fall at a certain speed and angle onto an object passing in front of the vertical nozzle.
, drop-on-demand inkjet technology
There are three types of inkjet printers with drop-on-demand inkjet technology, piezoelectric inkjet technology, pressure valve inkjet technology, and thermal foaming inkjet technology. Each one works differently.
) Piezoelectric inkjet technology: Piezoelectric inkjet printers are also called high-resolution inkjet printers or high-resolution inkjet printers. On the integrated nozzle head, one or more piezoelectric crystals control the nozzles respectively. The multiple nozzle holes on the board are processed, and then a series of electrical signals are output to each piezoelectric crystal through the drive board. The piezoelectric crystal deforms, so that the ink is ejected from the nozzle and falls on the surface of the moving object. Form a matrix of dots to form words, numbers or graphics. Then, the piezoelectric crystal returns to its original shape and new ink enters the nozzle due to the surface tension of the ink. Because of the high density of ink dots per square centimeter, piezoelectric technology can be used to print high-quality text, complex logos, barcodes and other information.
) Solenoid valve type inkjet printer (large character inkjet printer): The nozzle is composed of a group or groups of high-precision intelligent micro valves. When printing, the characters or graphics to be printed are processed by the computer motherboard. The output board outputs a series of electrical signals to the intelligent miniature solenoid valve. The valve opens and closes rapidly. The ink is ejected into ink dots depending on the constant internal pressure. The ink dots form characters or graphics on the surface of the moving object to be printed.
Thermal foaming inkjet technology
The abbreviation is to use a thin film resistor to heat an ink smaller than . in the ink ejection area to form a bubble. This bubble expands at an extremely fast speed (less than a microsecond), forcing the ink droplets to eject from the nozzle. The bubble continues to grow for a few microseconds and then disappears back onto the resistor. When the bubble disappears, the ink in the nozzle retracts. Surface tension then creates suction.
The above is a detailed introduction to the classification of inkjet printers according to their principles. I hope it will be helpful for your future purchase.