1. PRINTER AND ITS TYPES

2. CONTENTS DEFINITION OF PRINTER MAJOR TYPES
ADVANTAGES AND DISADVANTAGES
MODERN PRINTERS
REFERENCE

3. INTRODUCTION WHAT IS PRINTER
A printer is an output device that produces text and graphics on paper.

4. Major types Printers can be divided into two main groups
impact printer and non-impact printer
Impact printer produces text and images when tiny wire pins on print head strike the ink ribbon by physically contacting the paper.
Non-impact printer produces text and graphics on paper without actually striking the paper.

5. Impact printer

6. NON-IMPACT PRINTERS

7. ADVANTAGES AND DISADVANTAGES
Ink Jet Printing
Advantages
Mechanically simple
Large gamut of specialty colors
Very good initial print quality
Non-contact printing for special applications

8. CONTINUING Disadvantages Cost of consumables Limited print speeds
Average reliability
Poor image stability
Lamination needed for durability
Quality decreases over long runs

9. Impact vs. Non-impact
Impact - These printers have a mechanism that touches the paper in order to create an image. There are two main impact technologies:
Dot matrix printers use a series of small pins to strike a ribbon coated with ink, causing the ink to transfer to the paper at the point of impact.
Character printers are basically computerized typewriters. They have a ball or series of bars with actual characters (letters and numbers) embossed on the surface.

10. CONTINUING
Non-impact - These printers do not touch the paper when creating an image. Inkjet printers are part of this group, which includes:
Inkjet printers
Laser printers

11. LATEST TECHNOLOGIES
Technology which uses fullCure photopolymer materials in 28µ layers being deposited by the Jetting head sliding back and forth along the X-axis. Ultravoilet rays are then used to cure and harden the prototype which requires no further curing and can be used readily as a fully functional prototype

17. REFERENCE n west (IT Staff) 2009-01-08 GOOGLE
COMPUTER DEXTOP ENCYCLOPEDIA
© Copyright 2009 Objet Geometries Ltd

18. END