Question Bank - Computer Awareness

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Which of the following printers uses the photocopy technology to print ?

A.
Inkjet printer
B.
Laser printer
C.
Thermal printer
D.
Dot matrix printer

Solution:

The correct answer is Laser printer.Laser printer;Laser printing is an electrostatic digital printing process.It produces high-quality text and graphics (and moderate-quality photographs) by repeatedly passing a laser beam back and forth over a negatively-charged Cylinder called a "drum" to define a differentially-charged image.The drum then selectively collects electrically-charged powdered ink (toner), and transfers the image to paper, which is then heated to permanently fuse the text, imagery, or both, to the paper.Additional InformationInkjet printer:An inkjet printer is a computer peripheral that produces hard copy by spraying ink onto paper. A typical inkjet printer can produce copy with a resolution.Thermal printer:Thermal transfer printing is a different method, using plain paper with a heat-sensitive ribbon instead of heat-sensitive paper, but using similar print headsThermal printers print more quietly and usually faster than impact dot matrix printers.They are also smaller, lighter and consume less power.?Dot matrix printer:A dot matrix printer is an impact printer that prints using a fixed number of pins or wires

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