ITPEC IP April 2018 Question 13
Which of the following printers can take multiple copies simultaneously by using carbon paper or non-carbon paper at the time of printing?
Explanation
Impact printer — it prints by physically striking the paper, so the pressure also marks the carbon or non-carbon copies underneath.
An impact printer, such as a dot matrix printer, drives pins or type against an ink ribbon onto the paper. Multipart forms with carbon or pressure-sensitive (non-carbon) layers pick up the same impact, so several copies are made in one pass, which is why these printers are still used for slips and invoices.
Answer (b)
Why not others:
- •(a) Inkjet printer — sprays ink droplets onto the paper without pressure, so no copy reaches the sheets below
- •(c) Thermal printer — makes marks with heat on heat-sensitive paper, with no impact
- •(d) Laser printer — forms the image with a laser and fuses toner onto the paper, with no impact
Key rule: Only a printer that strikes the paper can make carbon copies; inkjet, thermal and laser printers are non-impact printers.
Computer Component · AI-written, may contain errors
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