A dot matrix printer prints a plurality of dots which form an overall image when viewed together. Typically, each dot is formed from one of a plurality of print elements on a printer head. Dot matrix printers commonly employ a printhead with a plurality of individual printing elements arranged in an array extending across the rectilinear path of the printhead relative to a recording medium. Dot matrix printer activates individual printing elements in an array in a pattern of operation that is controlled by a stream of columnar data in successive steps as the printhead traverses a recording medium. In dot matrix printers, each character or segment of a graphical image is comprised of a matrix of dots and blanks which together define the character. Dot matrix printers typically include a horizontally reciprocating print head which is used to form the characters on a web such as paper. Generally, a dot printer requires that mechanisms be moved at a high speed and positioning be performed accurately. There are two types of dot-matrix printers: a line head printer having a fixed print head and a moving head printer having a print head which shuttles across the print sheet and is provided with a plurality of dot-matrix pins or heating elements arranged in an order perpendicular to the width of a print sheet. n general, dot matrix line printers include a print head comprising a plurality of dot printing mechanisms, each including a dot-forming element. The dot forming elements are located along a line that lies orthogonal to the direction of paper movement through the printer.
