The plotter in simple manner is defined next to a printer; it works uniquely and is used in the applications of engineering purposes. It is such a device that draws lines and not the dotted form like the printer as commanded on the computer. These lines are sketched out by pen, unlike printer, which sorts out the command with the close linked dots to make the picture complete. The laser plotter can also use multiple color pens to draw different colored lines.

With its close performance like printers, the laser plotters are expensive and its use is also at advanced level. Plotters are the enhanced form of common printers that are used, it is because of the large size printing facilities it provide as compared to the regular printer, not only this it has higher color quality and graphical precision. These are used only for selected purposes and also for controlling networks. Thus this concludes that the laser plotters are used rarely and not for the home purposes as it tend to be expensive as compared to home printers. These plotters have to do with engineering aspects, say it is accompanied with the output of monochrome CAD and utilized in the architectural plans. These plotters are now renamed in the market as the large format printers; the pen plotters are now down due to the names of the inkjets and laser models.

The demand of the laser plotters bring such changes in the market rates and names, and the manufacturers get to do new things according to the demands. The laser plotters functions vary according to its types. The monochrome plotter is capable of printing black and white images only, it can function to produce gray shades images in abundant. Being focused on color matters, these plotters are known for its sharpness and speed of work as compared to the color plotters. Where as the color plotters use basic four colors cartridges in its inkjets and laser types, also, the pen type plotter uses color pens to plot colorful images by pen sketch. The standard colors of the colored plotters are cyan, yellow, magenta and black. The plotters have kinds that are utilized in different fields of work. The most known is the pen type plotters, these are directly linked with the technical printing, with the feature of drawing never ending lines, these plotters draw lines on large sheets or roll of paper, with constant drawing creating high graphical image and clearly visible diagram. This plotter is capable to draw arbitrary lines as commanded on computer. Unlike the ink jets and laser printer it sketches out the scan horizontally across the page at just one action. The pen type plotters are best used in computer aided design applications like the AutoCAD used in the engineering drawing and architectural plans in the visible portion. The pen plotters are less used for technical printing as it is built up with the delicate pens and it is only capable of drawing limited lines, not the color mixing and advanced level working.

The pen plotters have further different shapes as it can be of flatbed type or the drum plotters. The flat bed plotters sketches horizontally and vertically on the thin paper and the drum plotter draws lines horizontally and the paper under it revolves as commanded. The inkjets and laser plotters have no comparison; it is famous for offering better results. The inkjets and the laser printers are used in the creative meanings like that of advertising agencies and in the use of graphic designers. These plotters are used for the large outputs, used as colorful banners and billboards, signs and color images with larger appearance usually settled at road corners. These plotters might at sometimes be rough as they do no read the CAD format and rely on Windows print devices and these plotters tend to be very similar to the home printers and are easy to use. He type of plotter as the laser printers uses laser beam for its functioning via a drum on the paper. These plotters offer a high quality result in the color or black or white production image. Though its performance is more enhance than those of inkjets but it costs higher obviously.