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 Printer

• The printer is an external hardware device responsible for taking computer data and generating a hard copy of that data.
• Printers are one of the most used peripherals on computers and are commonly used to print text, images, and photos.

Types of printers 

Printers can be categorized into two parts:-

1. Impact Printer
2. Non-impact Printer 

Impact Printer:-

It strikes paper and ribbon together to form a character, like a typewriter. 
Example of impact printers are given below:-

[a]. Daisy Wheel :- 

• Similar to a ball head typewriter, this type of printer has a plastic or metal wheel on which the shape of each character stands out in relief.
• Daisy wheel printers produce letter-quality print but can not print graphics.

[b]. Dot Matrics :-

• Creates character by sticking pin against an ink ribbon.
• Each pin makes a dot and combinations of dots form characters and illustrations.

Non-impact Printer:-

It uses ink spray, toner powder or inkless. It can handle graphics and often a wider variety of fonts than impact printers.

Example of non-impact printers are given below:-

[a]. Laser Printer :- 

• A laser printer rapidly produces high-quality text and graphics.
• Laser printers are often used in corporate, schools and other environments that require print job to be completed quickly and large quantities.

[b]. Multifunction Printer :-

• An MFP is an office machine that incorporates the functionality of multiple devices in one.

                                                 

• A typical MFP may work as a combination of the following devices:-

1. Printer
   
2. Scanner
3. Photocopier
4. Fax

[c]. Thermal Printer :-

• Thermal Printers work by selectively heating regions of special heats sensitive paper.
• These printers are commonly used in calculators and fax machines, and although they are expensive they print relatively fast and produce low revolution job.

[d]. Inkjet Printer :-

• Inkjet printers operated by propelling variability sized droplets of liquid or molten material (ink) onto almost any sized page.

These are the most common type of computer printers used by consumers.

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