The ink is squirted as little dots. Inkjet printers are able to achieve much smaller dot sizes than dot matrix printers, so the quality of the text and pictures is much higher. With the advent of color inks, today's inkjet printers can create photo-quality pictures. For most people, this is the best kind of printer to get. It's pretty expensive to use colored ink for everyday use.
Black ink is much cheaper.
Laser printers are found mostly in businesses. The laser printing process is fairly complex. A laser then removes charges from parts of the photoconductor leaving only the charged image of the document. This pattern of toner is then transferred to paper with high heat and pressure. I told you it was complex.