Color digital laser and light-emitting diode printers are very similar. Both can print your business documents relatively quickly by melting toner to the paper, and both use a photosensitive drum. The ...

An LED and a semiconductor laser (or laser LED) work in essentially the same way, that is, light is emitted as electrons and holes combine, with emission wavelength dependent upon the materials used.

With paperless options slowly becoming everyone's new favorite, you might think that printing has become obsolete. But the truth is, whether you're a busy professional, a student, or a home user, ...