Factors Affecting the Stability of Ink Pump of Small Character Inkjet Printer

When using small character inkjet printer ink, its service life can easily reach 10 years or more. But for inkjet printers that use pigment ink, the service life of the ink pump is very short. So what factors affect the service life of the ink pump of the printer? Generally, the gears of ink pumps are made of high-molecular resin composite materials, which have the characteristics of high hardness, wear resistance and corrosion resistance. The gap between the two interlocking gears is controlled to be between 30 microns. The particle size of ordinary ink is below 5 microns, the viscosity of the ink is low, and the ink has almost no agglomeration. When the gears are running at high speed, the ink molecules can easily pass through the gaps between the gears, and will not generate additional pressure on the gear occlusal surface. Therefore, the gear life can reach 10 years or longer. On the contrary, if pigment ink is used, such as white ink commonly used in the wire and cable industry, the white ink contains an ink pigment. Zirconia is a huge particle that reaches directly or is close to 30 microns, and it will cause biting gears. Serious impact. The viscosity of ink is very high. In order to pursue the effect of whiteness, the viscosity of ink is often very high and the saturation exceeds the standard, which causes the agglomeration of ink molecules. When the ink passes through the gear occlusal surface, it prevents unmeasurable bite pressure from causing damage to the gear. In order to improve the service life of the ink pump, the general pigment inkjet printer uses a ceramic pump instead of the original resin pump. Of course, the price of using a better quality ceramic pump is to increase the unit price of the inkjet printer. This is also one of the reasons for the large price difference between dye-type inkjet printers and pigment-type inkjet printers.