Friday 17 May 2013

Printer



Printer is an output device.
They are used to get a printed copy of the document on a paper.

Mainly there are two types of printers .


1. Impact Printer:

In impact printers, there is a direct contact between the printing mechanism and the printer.
 It forms character images by staking a mechanism such as print hammer or wheel against an inked ribbon, leaving an image on the paper.

e.g.
       Drum printer, Dot matrix printer , Daisy-wheel printer, Line printer

                                                                     Dot-matrix Printer


                                                                Drum Printer

 
 





2. Nonimpact Printer:

Here, no direct physical contact between the print mechanism and page.

e.g. 
       Laser Printer: Creates images with dots


      Laser Printer
 
                                                                Working of Laser Printer
 
 
      
       Inkjet Printer: Spray small electric charged droplets of ink.

Inkjet Printer


 

No comments:

Post a Comment