A print head is a crucial component of a printer that applies ink to paper. It contains tiny nozzles that spray or drop ink in precise patterns to create text and images. The quality of the print head affects the clarity and detail of the printed output. Print heads can be found in various types of printers, including inkjet and thermal printers. In inkjet printers, they move back and forth across the paper, while in thermal printers, they use heat to transfer ink from a ribbon. Proper maintenance of print heads is essential for optimal printing performance.