Printers & Scanners

Printers and scanners allow us to transfer the information we see on our screens and apply it to many different forms. We'll explore printer types, such as inkjets, laser printers and scanners.


Scanners vary in resolution and sharpness, and their dots per inch (dpi) are determined by two "sampling rates." Find out how they affect your scanner's functionality.

Inkjet printers shoot miniscule droplets of ink onto paper to create a seemingly fluid stroke. And with prices dropping since their introduction in the late 1980s, these printers are more popular than ever.

Before the digital camera explosion, flatbed scanners were the way to get images into a PC and online. These devices turn images on paper into data you can access on a computer. Find out how scanners analyze, process and transfer images.

Offset printing is the technology that makes most magazines and catalogs possible. See how the offset printing process puts full-color images on paper.

Bubble jet printers are a type of inkjet printer. What makes this version so popular?

The strange bumps on your computer cables actually serve a very important purpose - keeping your system free from radio and electromagnetic interference. Learn how they do it.