Explanation:

Impact printer refers to a class of printers that work by banging a head or needle against an ink ribbon to make a mark on the paper.
This includes dot-matrix printers, daisy-wheel printers, and line printers.
Non-impact printer. A type of printer that does not operate by striking a head against a ribbon.
Examples of nonimpact printers include laser and ink-jet printers.
The term nonimpactis important primarily in that it distinguishes quiet printers from noisy (impact) printers.