An Introduction To Computer Printers and Scanners
| The article covers various types of printer and scanner technologies available today. The technology behind the working of laser printers is discussed extensively. The contents are provided below: |
1. Introduction to printers
1. What are printers
2. Types of printers
1. Impact printers
2. Solid ink printers
3. Thermal printers
4. Laser printers
2. Introduction to scanners
1. Flatbed scanners
2. Sheet-fed scanners
3. Hand-held scanners
3. Printer and scanner interfaces
4. Installing printers and scanners
5. Printer and scanner problems and troubleshooting
6. Tools to troubleshooting printer/scanner problems
1.1 What are printers?
Printers are commonly used output devices that produce a hard copy of document stored in electronic form, i.e they put information from computer on to paper.
There are various kinds of printers available today like Impact printers, Bubble-jet printers, Laser printers, Thermal printers etc.
1.2 Types of printers
1.2.1 Impact printers
Impact printers are among the old printing technologies, which make use of inked ribbon to make an imprint on the paper. Impact printers are considered noisy when compared to other printers.
The most commonly known impact printers are:
1. Daisy-Wheel Printers
2. Dot-Matrix Printers
How Daisy-Wheel Printers work?
A Daisy-Wheel Printer works on the same principle as ball-head typewriter. The daisy wheel printer consists of a disk made of plastic or metal on which characters stand out along the outer edge. The printer rotates the disk to print a character until the desired letter is facing the paper, after which a hammer called solenoid strikes forcing the character to hit an ink ribbon making a mark of the character on the paper.
Their speed is rated by cps (number of characters per second).
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