COMPUTER HARDWARE
OUTPUT DEVICES
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Works like a photocopier-paper is charged like the image, toner added and heat and pressure applied
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Very expensive-only used by banks
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hardware capable of holding information either temporarily or permanently that can be easilty transported
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need flat surface near to monitor, leads can get caught up, older ones can clog with dust
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Detailed explanation-1: -A laser printer is a popular type of computer printer that uses a non-impact photocopier technology where there are no keys striking the paper. When a document is sent to the printer, a laser beam “draws” the document on a selenium-coated drum using electrical charges.
Detailed explanation-2: -A transfer roller (or a transfer corona) applies a charge to the paper as it passes. The charged paper attracts the toner and the toner is transferred from the imaging drum to the paper.
Detailed explanation-3: -The principle used in a laser printer is static electricity. Initially, the photoreceptor drum is charged positively by corona wire by applying an electrical current on it. Then the printer shines a tiny laser beam across the surface according to the data sent by the computer, one horizontal line at a time.
Detailed explanation-4: -Page Printer Works like a copy machine, using toner and a heat bar. Laser printers are in this category.