At present, most printers commonly used in the market (such as Epson, Canon, etc. ) adopts double ink head structure: a black (or photo) ink head and a color ink head. In terms of ink cartridges, most ink cartridges are independent black ink, and the other three-color ink cartridges are integrated. In some products, the ink cartridges of each color are independent and can be replaced separately, which further reduces the printing cost.
Second, the formation of "blockage" of inkjet printer: due to poor seal or long-term storage of the print head after normal printing, excessive evaporation of water leads to the drying of ink particles at the tip of the fine print head, which makes the ink unable to be ejected normally; Or different inks are mixed with each other, resulting in chemical reactions, which are usually manifested as frequent faults such as broken lines, color leakage, blurred handwriting and even failure to print normally.