Information and Communication Technology

2.1.34 Graphic Plotters

Plotters are used to produce outputs containing graphics. With the availability of multicolour plotters, they are increasingly used for preparing financial documents, annual reports and engineering drawings. Plotters may use either the pen or inject approach. Pen plotters are available in two forms: drum type and flat-bed type. In the drum plotters, both paper and pen move whereas in the flat-bed plotter, while the paper is fixed, the pen moves. The inject plotters use jets of ink with different colours and are able to produce large drawings containing many colours.