laser printer means a laser (focused light) is shoned on a drum that is light sensitive. where the light hits the drum becomes magnetized and sticks to the ink. the drum rolls and touch paper. the ink deposits on the paper and then some heating element cooks the ink to attach it permanently to the paper.
some printers use an array of LED, other use a low power laser.
The dc242 is a color copier, so it's basically a color scanner and a color printer. the color printer is made of 4 drums for black cyan magenta and yellow.
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