Which type of printer primarily uses powder to print?

The type of printer that primarily uses powder to print is the laser printer. Laser printers operate by utilizing a powdered substance known as toner, which is a fine powder made from plastic particles, carbon, and coloring agents. The process begins with a laser beam projecting an image of the document onto a rotating drum, creating a static electric charge that attracts the toner particles. The toner is then transferred onto paper, and heat is applied to fuse it, resulting in a printed document.

This technology is known for producing high-quality prints at a fast speed and is commonly used in both home and office environments for its efficiency and good performance with text documents. The use of powder instead of liquid ink, as found in inkjet printers, is what distinguishes laser printers in this context, highlighting why this is the correct answer.