Lesson Summary

The following points summarize the main elements of this lesson:

Dot-matrix, ink-jet, and laser printers are the most widely used printers today.
As a computer technician, you can expect to encounter printing problems.
The key components of a laser printer are the power supply, photosensitive drum, eraser lamp, primary corona, laser, transfer corona, logic circuits, paper transport, and fuser.
Laser printing involves several steps: preparing the drum, imaging the page in memory, placing toner, and heating that toner to fix it on the page.