A printer is a peripheral machine which makes
a persistent representation of graphics or text,
usually on paper.
A printer is a peripheral device which makes a
representation of an electronic document on
The different types of printers include 3D
printer, inkjet printer, laser printer, thermal
4. “Impact Printer”
These printers have
a mechanism that
touches the paper to
create an image.
These printers work
by banging a print
head containing a
number of metal pins
which strike an inked
between the print
head and the paper.
5. “Non-Impact Printer”
The printers that prints
on paper without
striking the paper are
known as non-impact
They does not work by
include laser printers
and ink-jet printers.
Non Impact printers
are less quieter.
Non-Impact can print
up to 24 pages per
6. Impact VS Non-Impact
Impact printers functions by applying force,
where non impact printers does not do so.
Non-Impact printers prints without touching
the paper, where impact printers does not do
Non-Impact printers are faster and produce
high quality output than impact printers.
Non-Impact produce almost no noise during
printing where impact printers produce loud
noise while printing.
Non-Impact printers print more pages per
7. “Dot-Matrix Printer”
The term dot matrix
refers to the process of
placing dots to form an
Its speed is usually 30
to 550 characters per
This is the cheapest
and the most noisy
printer and has a low
Dot- Matrix were 1st
centronics in 1970.
9. “Daisy Wheel Printer”
A daisy wheel printer
is basically an
consisting of a wheel
extensions on which
A daisy wheel
letter quality print
and it can’t produce
11. How Daisy Wheel works?
In a daisy wheel printer, a hammer
presses the wheel against a ribbon
which in turn makes an ink stain on
the paper in the form of a character
mounted on the wheel extensions.
These printers are very noisy as there
occur great movement during the
printing. Its printing speed is also very
slow, less than 90 characters per
12. “Inkjet Printer”
Inkjet printing is a type
of computer printing that
recreates a digital
image by propelling
droplets of ink onto
paper and plastic
Inkjet technology was
developed in the 1960s,
but first commercialized
by IBM in 1976.
Ink-jet printer is type of
non-impact printer. It
creates output on paper
by spraying tiny drops of
Inkjet printer has print-
head that can spray very
fine drops of ink.
13. How Inkjet Printer works?
• Print head having four ink cartridges moves .
• Software instructs where to apply dots of ink,
which color and what quantity to use.
• Electrical pulses are sent to the resistors
behind each nozzle.
• Vapor bubbles of ink are formed by resistors
and the ink is forced to the paper through
• A matrix of dots called print head forms
characters and pictures.
14. o In the inkjet printing mechanism, the print head
has several tiny nozzles, also called jets. As the
paper moves past the print head, the nozzles
spray ink onto it, forming the characters and
o An inkjet printer can produce from 100 to several
hundred pages, depending on the nature of the
hard copy, before the ink cartridges must be
o There is usually one black ink cartridge and one
so-called color cartridge containing ink in primary
pigments (cyan, magenta, and yellow). Some
inkjet printers use a single cartridge with cyan,
magenta, yellow, and black ink.
o A few models require separate cartridges for each
primary pigment, along with a black ink cartridge.
16. “Thermal Printer”
images by pushing
pins against heat-
Prints by using
Commonly used for
printing labels and
It is of three types:-
◦ Basic thermal printer
◦ Thermal wax
17. Basic Thermal Printer
• Image quality is low.
• Images tend to fade overtime.
• Receipts receives from ATM, petrol pump,
Thermal wax transfer printer
• Melts a wax-based ink onto special paper in
Thermal dye transfer printer
• Heats ribbon containing dye and then diffuses
the dye onto specially coated paper.
• High print quality.
• Can print as much faster then inkjet and laser
18. “Laser Printer”
A machine that
produces very good
material from a
computer by using a
controlled ray of very
Laser printer comes
in different sizes.
Provides the highest
More expansive than
19. How a laser printer works
They work by using a heated wire to
positively charge a drum, which is then
passed over by a laser that reverses the
charge in the areas that it hits. The now-
negatively charged areas of the drum
represents the image or text that is to be
A toner roller is passed over the drum, and
toner particles stick to the negatively charged
areas. A sheet of paper is then fed
underneath the toner-coated drum and the
toner is passed onto its surface, creating a
21. Comparison between Impact and
Impact Printer Non-Impact Printer
Use striking mechanism for
Use ink for printing.
Make noise during printing. Silent Printers.
Slow in working. Fast in working.
Low quality printing. High quality printing.
Cheap or inexpensive. Expensive.
1) Dot Matrix
2) Daisy Wheel