Question Bank - Computer Awareness

Here's the question bank on all the computer awareness topics.

What best describes how an inkjet printer prints an image?

A.
One dot at a time to form a character
B.
Spray - printing a character
C.
Striking an inked ribbon
D.
Dropping ink onto the paper

Solution:

The correct Spray - printing a character.Inkjet printer:Inkjet printers each feature a print head containing thousands of tiny holes.These tiny openings drop microscopic droplets of ink onto the paper in the printer at a speed.Inkjet machines use a liquid ink produced either by either a coloured dye or a liquid that contains solid pigments in suspension.As the print head moves horizontally in the machine, the paper passes through perpendicular to it.As the page passes through, the individual holes in the print head are activated (usually by heat electrical current depending on the manufacturer) and a small drop of ink is pushed out onto the page. This process if performed at high speed with thousands of droplets that form together to recreate the digital text or image that is being transferred onto the media.To the naked eye, the overall image looks to be solid because the dots are so tiny.

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