This document discusses different types of printers. It describes two main types - impact printers and non-impact printers. Impact printers form characters by physically striking the paper, and include dot matrix, daisy wheel, and line printers. Non-impact printers form characters without striking the paper, and include inkjet, photo, laser, thermal, and mobile printers. The document provides details on the printing mechanisms and features of each printer type.

1. Introduction to Computing
Printers

2. Printers
• A printer is an output device that
produces text and graphics on a
physical medium such as paper.
• Many different printers exist with varying
speeds, capabilities, and printing
methods.
• There are two types of
Printers.
• Impact Printers

4. Impact Printers
• An impact printer forms characters and
graphics on a piece of paper by striking
a mechanism against an inked ribbon
that physically contacts to the paper.

5. These are the further types of Impact
Printer.
• Dot-Matrix Printers
• Daisy-wheel Printers
• Line printers

6. Dot-Matrix Printers
• The dot-matrix printer uses print heads
containing from 9 to 24 pins. These pins
produce patterns of dots on the paper to
form the individual characters. The 24 pin
dot-matrix printer produces more dots
than a 9 pin dot-matrix printer.

7. Daisy-wheel Printers
• It is a type of Impact Printer invented in
1969 by David S. Lee.
• It uses a metal or plastic disk containing
each of the letters, numbers, and other
characters. When something is printed,
the printer rotates the disk to each
character and then using a hammer strike
each character into an ink ribbon to create
the character on paper.

9. Figure of Daisy Wheel Printer

10. Line Printer
• A high-speed Printer capable of printing
an entire line at one time. A fast line
printer can print as many as 3,000 lines
per minute. The disadvantages of line
printers are that they cannot print
graphics, the print quality is low, and they
are very noisy.

11. Figure of Line Printer

12. Non Impact Printer
• A nonimpact printer forms characters
and graphics on a piece of paper without
actually striking the paper. Some
nonimpact printers use spray ink, while
others use heat or pressure to create
images.
• The further types of nonimpact printer
are:

13. • Ink-jet printers
• Photo printers
• Laser printers
• Thermal printers
• Mobile printers

14. 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
and color including photos.

15. Photo Printer
• It is a type of Printer that prints the photos
that taken by digital camera. Some photo
printers print just one or two sizes of
images, for example, 3 * 5 inches and 4 *
6 inches. Others print up to letter size,
legal size, or even larger.
Many photo printers use ink-jet
technology.

16. Figure of Photo Printer

17. LASER Printer
• A type of Printer that linked to a computer
that prints on a paper using LASER
technology in which LASER to form a
pattern of electromagnetically charged
dots on a light sensitive drum.

18. Thermal Printer
• A printer that uses heat to transfer an
impression onto paper. It uses wax and
coated papers.

19. Mobile Printer
• A mobile printer is a small, lightweight,
battery-powered printer that allows a
mobile user to print from a notebook
computer, Tablet PC, PDA, or smart
phone while traveling.

20. Figure of Mobile Printer

21. MFP (Multifunction Peripheral Device)
• A multifunction peripheral is a
single device that looks like a copy
machine but provides the functionality of a
printer, scanner, copy machine, and
perhaps a fax machine (Figure). Some
use color ink-jet printer technology,
while others include a black-and white
laser printer. An advantage of these
devices is they are significantly less
expensive.

23. Thanks for watching
and listening
• Prepared by:
• Muhammad Faizan Akhter