You are working as a senior technician at Certkiller .com. A trainee wants to know which types of
printers that have a drum. What will your answer be?
A.
impact
B.
laser
C.
ink jet
D.
thermal
Explanation:
The laser is aimed at a rotating polygonal mirror, which directs the laser beam through a system of
lenses and mirrors onto the photoreceptor. The beam sweeps across the photoreceptor at an
angle to make the sweep straight across the page; the cylinder continues to rotate during the
sweep and the angle of sweep compensates for this motion. The stream of rasterized data held in
memory turns the laser on and off to form the dots on the cylinder.