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LASER PRINTERS
BY SUHANEE GIROTI
WHAT IS A LASER PRINTER
It is a printer that makes use of powdered ink and stat...
It is a printer that makes use of powdered ink and static electricity to print
- They use powdered ink instead of liquid ink to print
- They use static electricity to print characters and images
- They print the whole page in one go
- They are suitable for large print jobs since they have a high speed advantage
Laser printers primarily consist of:
Logic circuits
Photosensitive drum
Laser
Toner Hopper (location of powdered ink)
Fuser (melts the ink)
Erase lamp.
This aluminum cylinder saves the image of what you are printing
2. THE PRINTER DRIVER CHECKS THAT THE DATA IS IN UNDERSTANDABLE FORMAT
2. THE PRINTER DRIVER CHECKS THAT THE DATA IS ...
4. THE DATA IS SENT TO THE PRINTER AND IS STORED IN A PRINTER BUFFER
4. THE DATA IS SENT TO THE PRINTER AND IS STORED IN...
6. THE LASER BEAM REMOVES THIS POSITIVE CHARGE IN CERTAIN AREAS: THIS LEAVES CERTAIN NEGATIVELY CHARGED AREAS IN THE SHAPE OF THE IMAGE TO BE PRINTED
6. THE LASER BEAM REMOVES THIS POSITIVE CHARGE ...
8. A NEGATIVELY CHARGED PAPER IS THEN ROLLED OVER T...
8. A NEGATIVELY CHARGED PAPER IS THEN ROLLED OVER THE DRUM. THIS NEGATIVE CHARGE IS STRONGER THAN THE ONE ON THE DRUM, CAUSING THE TONER TO STICK TO THE PAPER
9. THE NEGATIVE CHARGE IS REMOV...
9. THE NEGATIVE CHARGE IS REMOVED FROM THE PAPER TO PREVENT IT FROM STCKING TO THE DRUM
USES
- By businesses for mass production
- Preparing invoices in large numbers
- Account and corporate statements
- Advertising
- They are not usually used in homes due to their high price
laser printer
ink-jet printer
- It uses a type of powdered ink called toner, which sticks to the paper
Advantage: offers high quality, faster thank ink jet, efficient use of toner
Disadvantage: maintanence is expensive, produce ozone matter which may be harmful, larger in size, can be noisy
- works through spraying minute dots of ink onto paper
Advantage: smaller in size, cheaper than laser printers, high quality even in coloured ink
Disadvantage: slower than laser printers, the ink cartridges have to be replaced frequently, ink can smudge if touched early, expensive to run
VIDEO
Q1. Give two reasons why Laser Printers should be used over InkJet printers
Q2. What is the toner and where is it stored?
Q3. The Laser printer uses the static electricity and liquid ink to print (T/F)
Q4. Briefly explain the involvement of charges in the printing process.
- http://support.brother.com/g/b/faqendbranchprintable.aspx?c=us&lang=en&prod=hl7050_all&faqid=faq00002882_000&printable=true
-https://www.slideshare.net/AbhijitJadhav9/laser-printers-69559771
- https://www.quora.com/What-are-laser-printers-used-for
- http://www.bbc.co.uk/schools/gcsebitesize/dida/graphics/printingrev2.shtml
- PREZI.COM