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Printers (Inkjet Printer (Consist of: (Print Head (Nozzles to spray drops)…
Printers
Inkjet Printer
Consist of:
Print Head
Nozzles to spray drops
Ink Cartridge
Contains special ink
Stepper Motor and Belt
Moves the print head across the page
Paper Feed
Feeds single sheets of paper into the printer body
Recieves data and stores it in a
printer buffer
A
sensor
is used to check whether the paper is correct
When the
printer buffer
is empty it sends an
interrupt signal
Advantages :check:
Cheap to purchase
High quality output
Relatively quiet
Disadvantages :no_entry:
Cartridges don't last long
Printing can smudge
Expensive to run
Applications
One off at home printing
Dot Matrix Printer
Old technology
Use an
inked ribbon
Advantages :check:
Large print jobs with no human interaction
Carbon copies are made instantly
Cheap to run
Can work in damp and dirty atmospheres
Able to print raised characters e.g braille
Disadvantages :no_entry:
Expensive to purchase
Noisy
Slow printing and poor quality
Limited colour
Applications
Producing wage slips
Laser Printer
Consist of:
Printing Drum
Positively charged
Powdered Toner
Negatively charged
Fuser
Set of heated rollers to fix the ink
Works as taught in physics
Disadvantages :no_entry:
Running costs are expensive
Produce ozone and volatile organic matter which can be harmful
Advantages :check:
Low noise
Fast output
Toner cartridges last a long time
Extremely good print quality
Applications
High speed or large volume printing e.g. magazine printing
3D Printer
Produce 3D solid objects
Computer model is made
Model is sliced up into printable layers
Applications
Creation of museum artefacts
Parts for a vintage car