Inkjet printers spray colored liquid ink into fine particles through nozzles and spray them onto the printing paper. Some inkjet printers have three or four print heads to print yellow, magenta, cyan and black colors; some share one nozzle. Four-color printing. When an inkjet printer prints an image, it needs to go through a series of complicated procedures.
When the printer nozzle quickly sweeps the printing paper, the countless nozzles on it will eject countless small ink droplets to form the pixels in the image. Generally, there are 48 or more independent nozzles on the printer head to eject various colors of ink. For example, the 48 nozzles of Epson Stylus photo 1270 can respectively eject 5 different colors: cyan, magenta, yellow, light blue-green and light magenta, and there are 48 nozzles that eject black ink.
Generally speaking, the more nozzles, the faster the printing speed. Ink drops of different colors fall on the same point to form different complex colors. It can be observed with a microscope that the place where the yellow and blue-violet inks are ejected at the same time is green, so we can think that the basic color of the print is formed in the inkjet overlay. By observing the simple four-color inkjet working method , We can easily understand the working principle of the printer: each pixel has 0 to 4 ink droplets covering it. Different combinations can produce more than 10 different colors. Some printers can also produce 16 different colors through a combination of colors, such as "cyan and black" or "magenta, yellow and black".