Impact+Printer


 * Impact Printer:**

Impact printers use an inked ribbon to mark paper with an impression of a character. In a dot-matrix printer, the ribbon is struck hard by up to 24 metal pins that form the outline of the character. It is this action that marks the paper. Dot-matrix printers are very noisy. The paper that the printer prints to consists of several layers and each layer, except the bottom one, is carbonised on the reverse side. This happens so that the marks that appear on the top copy appear on the copies beneath.