tulostuspäähän

Tulostuspäähän, often referred to as a printhead, is a crucial component in many types of printers, particularly inkjet and some laser printers. Its primary function is to deposit ink or toner onto the printing medium, such as paper, to create the desired image or text. In inkjet printers, the tulostuspäähän contains numerous tiny nozzles that are precisely controlled to spray droplets of ink. These droplets are expelled through the nozzles in specific patterns, dictated by the digital information being printed. The accuracy and speed of these nozzle firings are critical for print quality and overall printing performance.

There are two main types of inkjet tulostuspäähän: thermal and piezoelectric. Thermal printheads use a heating element to rapidly heat and vaporize a small amount of ink, creating a bubble that forces a droplet out of the nozzle. Piezoelectric printheads, on the other hand, use a piezoelectric crystal that changes shape when an electric voltage is applied, creating pressure to expel ink droplets. In laser printers, the tulostuspäähän is part of the imaging drum assembly and is responsible for transferring the toner particles to the drum in the pattern of the image. The technology and design of the tulostuspäähän significantly influence a printer's resolution, color accuracy, printing speed, and cost of operation.