Non-impact printers
A non-impact printer prints characters and graphics on a
piece of paper without striking the paper.
Some of these papers use spray ink while others use heat and
pressure to create images.
These printers are faster than impact printer.
Types of non-impact printers:
A.Laser printer
B.Inkjet Printer
C.Thermal printer
A.Laser printer:
These are non-impact printers.
They work in a way similar to photocopying machine.
The laser creates images on a paper by laser beam.
LASER means Light amplification by stimulated emission of
Radiation.
Laser throws magnetic material powder on paper in the form
of microscopic dots.
The density of these dots ranges from 300 to 2000 dots per
inch.
The printing speed of laser printers is from 5 to 300 pages
per minute.
Laser printers are also called as page printers.
They print one page at a time.
They are faster than inkjet and dot matrix printers.
Color printing with laser pinters is very costly.
B.Inkjet Printer:
An ink jet printer is a type of non-impact printer.
It prints characters and graphics by spraying tiny drops of
liquid ink on paper.
These printers can produce quality text and graphics in both
black and white color.
Inkjet printers are slower than laser printers.
They print 1 – 6 pages / minute.
Its print quality is higher than dot matrix printer.
They are also relatively inexpensive.
Most inkjet printers usually have two print cartridges : one
containing black and other containing color.
Another type of inkjet printer is called bubble jet printer.
Thermal printer:
This uses color waxes and heat to produce images by burning
dots on special paper.
The color wax sheets arenot required for black and white output.
Thermal printers are expensive and require costly paper.
These printers are used to create the highest quality color
printing.
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