Which device is primarily used to produce hard copies of digital documents?

A printer is primarily used to produce hard copies of digital documents. Printers take digital files from a computer or other device and convert them into physical documents, such as text pages or images, which can be printed on various types of paper. This process allows users to create tangible copies of their work, which is essential for tasks in both personal and professional settings.

Unlike a scanner, which is used to digitize physical documents and convert them into digital format, a printer focuses on the opposite function—creating physical output from digital data. Monitors display digital content visually but do not produce physical copies. Projectors, while they can display digital content to a larger audience, still do not produce hard copies of documents; they simply project images or video onto a surface.

Understanding the distinct functions of these devices clarifies that a printer's role is specifically geared toward the creation of hard copies, making it the correct choice in this scenario.