6. DMP
DMP uses a matrix of metal pins on the
electromagnet print head to create dots.
The ink soaked ribbon is placed between the
paper and print head. The number of metal
pins in the dot matrix printers varies from 9
to24. The best quality printers have 24 metal
pins. Main Parts a
DMP
Power Switch
Tractors
Platter
Paper Feed Knob
Paper Select Lever
Top cover
Single Sheet Guide
7. Inkjet Printers
The Inkjet Printer Places extremely
minute amount of electrically charged
ink on paper to create image or text.
The drops of charged ink are sprayed
through saeries of nozzles. These
drops are amoutn 0.6 microns.
8. The evolved from the photocopier. The
first true laser Printer was
demonstration unit, made by Canon in
1975.The basic lase printer mechanism
requires more than just a beam and a
drum. Infact, involves several drums or
rollers as many as six in a single color.
