1. Printers and data printing
Tayyab Irfan

2. What are printers?
▪ Printer is an output device which is use to print graphics and symbols.

3. Types of
printers
Impact
printer
Daisy wheel
printer
Line printer
Dot-matrix
printer
Non impact
printer
Ink jet
printer
Thermal
printers
Bubbled-jet
printers

4. Impact printers
▪ An impact printer has mechanisms resembling those of a typewriter. It forms
characters or images by striking a mechanism such as a print hammer or
wheel against an inked ribbon, leaving an image on paper.

5. Dot-matrix printer
▪ Dot-matrix printers print about 40-300 characters per second
(cps) and can print some graphics, although the reproduction quality
is poor.

6. Advantages or disadvantages
Advantages
▪ Lower cost
▪ Low maintenance cost
▪ Easily available in market
▪ Print carbon copies
Disadvantages
▪ Low quality of print
▪ low quality of print out
▪ papers stuck
▪ Great Noise

7. Line printers
▪ A high-speed printer capable of printing an entire line at one time.

8. Advantages OR Disadvantage
Advantages
▪ Low printing cost
▪ Long life
▪ Large print size
Disadvantages
▪ Large footprint
▪ Higher initial cost

9. Daisy wheel printer
▪ A daisy-wheel printer works on the same principle as a ball-head
typewriter.

10. Advantages or Disadvantages
Advantages
▪ Reliable than other printers
▪ Better printing quality
▪ Changeable Fonts
Disadvantages
▪ Noisy
▪ Slower than others
▪ Most expensive

11. Non-impact printers
▪ Nonimpact printers, used almost everywhere now, are faster and
quieter than impact printers because they have fewer moving parts.

12. Laser printers
A laser printer creates images with dots. They produce sharp, crisp
images of both text and graphics, providing resolutions from 300 dpi up
to 1200 dpi.

13. Advantages or disadvantages
▪ Advantages
 High speed
 Good quality
 Low noise
Good quality print
▪ Disadvantages
 Large in size
 Most expensive

14. Ink-jet printers
▪ ink-jet printers also form images with little dots. Ink-jet printers spray
small, electrically charged droplets of ink from four nozzles through
holes in a matrix at high speed onto paper.

15. Advantage and Disadvantages
Advantages
 Less noisy
 compact size
 more reliable
 high quality print
Disadvantages
 Heavy in weight
 high cost print
 Easily get blurred

16. Thermal printers
▪ Thermal printing is a digital printing process which produces a
printed image by selectively heating coated thermochromic pape

17. Advantages or disadvantages
Advantages
 Use special thermal paper.
 Affordable machine.
 print individually.
Disadvantages
 more expensive
 poor quality of print