After years of practice, the technology of ink-jet printers has made considerable progress. In 1995, the color ink-jet printers of more than 1000 yuan were enough to meet all the needs of ordinary families. Even users like photography enthusiasts who have high requirements for picture quality can find ideal products among the color ink-jet printers of more than 2000 to 3000 yuan.

When inkjet printers print images, they need to carry out a series of complicated procedures. When the printer nozzle quickly sweeps the print paper, the innumerable nozzles on it will spray innumerable small ink droplets, thus forming the pixels in the image. There are generally 48 or more independent nozzles on the printer head to spray ink of different colors.