The ink-jet printer was developed after the stylus printer and used a non strike working mode. The outstanding advantages are small size, simple and convenient operation, low printing noise, and the use of special paper can produce pictures comparable to photos, etc.

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.