Laser Printers Flashcards
1
Q
What is a Laser Printer
A
An output device that produces images on paper from digital signals.
2
Q
What do Laser printers consist of
A
Laser light source
Mirror
Drum
Toner roller
Fusers
3
Q
How do Laser Printers work?
A
When a document is printed drum is positively charged.
Areas on which the laser is incident are discharged leaving behind an impression on the page in electrical charge on the drum.
Toner roller dispenses negatively charged toner onto the drum
- toner is attracted to pos charged parts of the drum. Toner is then applied to the paper before pater is heated by fusers - fixing toner to the paper
4
Q
How do colour printers work?
A
Same process as Laser Printers with four different colours of toner (CYMK).
Cyan
Yellow
Magenta
Black
