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Laser Printers
Laser printers are non-impact
printers which can print text and images in high speed and high quality
resolution, ranging from 600 to 1200 dpi.
Unlike inkjet printers, laser
printer use toner (black or colored powder) instead of liquid inks. A
laser printer consists of these major components: drum cartridge, rotating
mirror, toner cartridge and roller. The drum cartridge rotates as the
paper is fed through. The mirror deflects laser beam across the surface
of the drum. Laser beam creates charge that causes the toner to stick to
the drum. As the drum rotates and presses on paper, toner is transferred
from the drum to paper, creating images. Rollers then use heat and
pressure to fuse toner to paper. Colored laser printers add colored toner
in three additional passes.
Advantages of laser printers:
1)
High resolution
2)
High print speed
3)
No smearing
4)
Low cost per page (compared to inkjet printers)
5)
Printout is not sensitive to water
6)
Good for high volume printing
Disadvantages of laser
printers:
1)
More expensive than inkjet printers
2)
Except for high end machines, laser printers are less capable of
printing vivid colors and high quality images such as photos.
3)
The cost of toner replacement and drum replacement is high
4)
Bulkier than inkjet printers
5)
Warm up time needed
Read more about the other types of printers:
inkjet printers,
dot-matrix
printers,
thermal printers,
photo
printers,
portable printers,
multifunction printers.
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