What is Printer? Discuss different types of Printers in detail.

 What is printer? Discuss different types of printers? 

A printer is an output device that prints characters symbols and Graphics on paper.The printed output is called hard copy.Print resolution is commonly measured in dots per  inch DPI The printers with higher DPI produce higher quality output.

Types of printers 

DIfferent types of printers are as follows:

1.Impact printers 

An impact printer was like a typewriter it prints characters or images by striking a print hammer or set of pins against an ink ribbon.impact printers are the oldest print Technologies which are still produced the impact printers are used where low cost printing is required the most common forms of print. impact printer that are as follows:

• Dot Matrix printer

• Daisy wheel printer

• line printer

2.Non-Impact Printers

A non-impact printer prints characters and graphics on paper without striking paper.Some printers use spray ink while others use heat and pressure to create images.These Printers are faster than impact printer.However,they are more costly than impact Printers.They produce no noise during printing.The print quality of non-impact printers is better than impact printers.

 Different kinds of non-impact printers are as follows:

• Laser Printer

• Inkjet Printer

• Thermal Printer

What is impact printer?Discuss different types of impact printers.

Impact Printers

An impact printer was like a typewriter it prints characters or images by striking a print hammer or wheel against an ink ribbon.

Types of impact Printers

Different types of impact printers are as follows:

• Dot Matrix printer

• Daisy wheel printer

• line printer

1.Dot Matrix Printer

8 Dot Matrix printer is an impact printer. It produced printed images when tiny pins on a print head strike an inked ribbon. when the Ribbon presses against the paper, it creates dots that form characters and graphics.The print head on a Dot Matrix printer can contain 9 or 24 pins number of depends on the manufacture and the printer model are higher number of panes print more dots that produce higher quality.

The speed of Dot Matrix printer is measured by the number of characters printed in one second.The speed of most dot matrix printers ranges from 350 to 1100 characters per second(cps).Dot matrix printer do not provide high quality output.They produce a lot of noise while printing.The printing cost of these printers is very cheap.

Dot-Matrix Printer

2.Daisy Wheel Printer

Daisy wheel printer is 75 to 100 milar to a typewriter.It uses a print  wheel the print wheel is called Daisy wheel each petal of Daisy wheel contains characters a motor rotate the will a hammer strikes a Petal against the ribbon. When the desired character reaches the position on the paper this print characters on the paper.Daisy wheel printer is slower than Dot Matrix printer but better in quality.it cannot print graphics and images.

Daisy Wheel Printer

3.Line Printer

Line printer is a fast impact printer it prints an entire line at a time its speed is measured in lines per minute many line printers can print 3000 lines per minute two types of line printers are are .it is is normally used by mainframe and micro computers.

What is non impact printer?Discuss its different types.

A non impact printer prints characters and Graphics on a piece of paper without striking the paper. Some of these printers use ink while others use heat and pressure to create images.These printers are faster than impact printer.

Types of non-impact printers 

Different types of non impact printers are as follows 

• laser printer 

• Inkjet printer 

• Thermal printer

1.Laser Printer

LASER stands for Light Amplification by Stimulated Emission of Radiation.The laser printer is a non-impact printer.Its working is similar to photocopying machine.It uses laser beams to burn special powder on page to create a permanent image.The power is contained in toner.

laser prints complete page at a time it is also known as page printer the printing speed of laser printers is 5 to 300 pages per minute (PPM). The speed depends on the  contents being printed the plane text is printed faster than graphics.

Laser printer prints text and graphics in high quality resolution A typical laser printer provides the resolution of 1200 DPI or more. laser printer prints at higher speed than inkjet printer and dot Matrix printers.It does not make much noise laser printer is mostly used in business field.

Laser Printer

2.Inkjet Printer

 printer is a type of non impact printer it prints characters and graphics by sprayring tiny drops of liquid ink on paper these printers can produce quality text and graphics in both black and white and colour including photos.A typical inkjet printer provides a resolution of 300 per inch.The latest inkjet printersprovide higher resolution.

The price of ink jet printers is less than laser printers.However they are slower than laser printers.most inkjet printers can print from 10 to 35 pages per minute.however they print graphics and colours at slower rate.The print quality of inkjet printer is higher than Dot Matrix printer they are also comparatively inexpensive.Most inkjet printers usually have to print catridge. 1 cartridge contains black ink and the other contains color.

Inkjet Printer

3.Thermal Printer

Thermal printer uses colour waxes and heat to produce images on special paper. The color wax sheet are not required for black and white output thermal printer are expensive and required costly paper. These printers are used to create the highest quality color printing.