Leadtech inkjet printer: The leading manufacturer in CIJ printer - continuous inkjet printer, since 2011. 

Introduction of high-resolution inkjet printer

by:Leadtech Coding     2022-01-29
The working principle of the coding equipment (1) The working principle of the continuous ink jet printer (continuous ink jet printer) Under the action of pressure, the ink enters the spray gun, and the spray gun is equipped with a crystal oscillator. The working principle of the Leadtech Coding equipment (1) The continuous ink jet technology ( Continuous ink jet printer) Working principle: Under the action of pressure, the ink enters the spray gun, and the spray gun is equipped with a crystal oscillator. Through vibration, the ink is ejected to form a fixed interval point. The dots are charged with different electric nuclei, and undergo different offsets under the high-voltage magnetic field of several thousand volts, and the flying nozzles land on the surface of the moving product to form a dot matrix, thereby forming characters, numbers or graphics. The remaining ink dots are not charged and will not be offset, and are directly injected into the recovery tank to be recovered and reused. Working principle diagram of CIJ inkjet printer Under the pressure of the ink supply pump, the ink passes through the ink pipeline from the ink tank, 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 , under the action of the piezoelectric crystal, it is broken into a series of continuous ink droplets with equal spacing and the same size. A certain voltage is applied to the charging electrode. When the ink droplet is separated from the conductive ink line, it will instantly carry a negative charge 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 of ink droplets breaking, each ink droplet can be charged with a predetermined negative charge. The deflection plate with positive and negative voltage passes through the middle, and the charged ink droplets will be deflected when passing through the deflection plate. The degree of deflection depends on the amount of charge. The non-charged ink droplets will not be deflected, and will fly downward and flow into the recovery tube. , and finally returned to the ink tank for recycling through the recycling pipeline. The charged and deflected ink droplets fall at a certain speed and angle onto objects passing in front of the vertical jet. The information to be printed is processed by the computer motherboard, changing the charge of the ink droplets, and different identification information can be generated. (2) Drop on demand inkjet technology (drop on demand) The inkjet printers with the working principle of DOD are divided into three types, piezoelectric inkjet technology, pressure valve inkjet technology, and thermal foam inkjet technology. Piezoelectric inkjet technology: Piezoelectric inkjet printers are also called high-resolution cij printers or high-resolution cij printers. On the integrated nozzle, 128 or more piezoelectric crystals are used to control the number of nozzles on the nozzle plate. Each nozzle is processed by the CPU, and then a series of electrical signals are output to each piezoelectric crystal through the drive board, and the piezoelectric crystal is deformed, so that the ink is ejected from the nozzle and falls on the surface of the moving object to form a dot matrix , so as to form text, 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, the application of piezoelectric technology can print high-quality text, complex logos and barcodes. Pressure valve type cij printer (large character cij printer): The nozzle is composed of 7 groups or 16 groups of high-precision intelligent micro-valve. When printing, the characters or graphics to be printed are processed by the computer motherboard and passed through the output board. A series of electrical signals are output to the intelligent micro solenoid valve, the valve opens and closes quickly, and the ink is ejected into ink dots by the constant internal pressure, and the ink dots form characters or graphics on the surface of the moving printed matter. Thermal Inkjet Technology: Thermal Inkjet Technology (TIJ) for short, uses a thin film resistor to heat less than 0.5% of the ink in the ink ejection area to form a bubble. This bubble expands at an extremely fast rate (less than 10 microseconds), forcing the ink droplet out of the nozzle. The bubble continues to grow for a few more microseconds before disappearing back onto the resistor. When the bubbles disappear, the ink in the nozzles retracts. Surface tension then creates suction, pulling new ink to replenish the ink ejection area. Thermal foam printing technology is structured by such an integrated cycle technology process. Previous: Industry prospects of inkjet printers
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