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Inkjet printers

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Transcript

  • 1. Inkjet Printers
  • 2. What is inkjet printing?  Inkjet printing is a type of computer printing that creates a digital image by propelling droplets of ink onto paper, plastic, or other substrates.
  • 3. If you don’t understand complicated words – (Like me)  The printer recreates an image from the computer onto a solid surface such as paper, acetate etc.  This means that the ink is squirted out of the cartridges on to the paper.  This also means that the quality is not brilliant  - In fact, the quality is very pixelated.
  • 4. How do they work?  This can be done using one of two methods.
  • 5. Thermal Inkjet Process.  The print cartridges contain a series of tiny chambers, each containing a heater.  To eject a droplet from each chamber, a pulse of current is passed through the heating element causing a rapid vaporization of the ink in the chamber to form a bubble, which causes a large pressure increase, propelling a droplet of ink onto the paper (hence Canon's trade name of Bubble Jet). – (Wikipedia)
  • 6. Piezoelectric Material  Uses an electrical pulse in an ink-filled chamber behind each nozzle instead of a heating element.  When a voltage is applied, the piezoelectric material changes shape, which generates a pressure pulse in the fluid forcing a droplet of ink from the nozzle.
  • 7. What are they made of?
  • 8. What are the main parts of an inkjet printer?  The housing  The electronic card  The printheads  The loading paper system
  • 9. - Composition of an inkjet printer (Jason O. – 2005)
  • 10. What are they used for?  They are the most common consumer form of printer as they are cheap and easy to find.  Of course, they are used for printing, but if you want to print photos – this is not the best choice.
  • 11. Thank you.