plotter


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plotter

[′pläd·ər]
(engineering)
A visual display or board on which a dependent variable is graphed by an automatically controlled pen or pencil as a function of one or more variables.

plotter

(hardware)
A device that uses one or more pens that can be raised, lowered and moved over the printing media to draw graphics or text.

The heart of the plotter is the printer head assembly, consisting of a horizontal bar and, attached to it, the head assembly holding the pen in use. The pen can be positioned horizontally by moving the pen assembly along the bar. Vertical positioning is achieved by either moving the bar (stationary page plotter) or the paper (rolling page plotter). Combinations of horizontal and vertical movement are used to draw arbitrary lines and curves in a single action, in contrast to printers which usually scan horizontally across the page.

Colour plots can be made by using more than one pen. Older plotters required a separate pen for each colour and the pens had to be changed by hand. Modern colour plotters usually use only four pens (cyan, magenta, yellow, and black, see CMYK) and need no human intervention to change them.

Monochromatic plotters have been largely phased out by laser printers except when large paper size is needed, e.g. in CAD.

plotter

A graphics printer that draws images with ink pens. Plotters actually draw point-to-point lines directly from vector graphics files. The plotter was the first computer output device that could print graphics as well as accommodate full-size engineering and architectural drawings. Using multiple colored pens, plotters were also able to print in color long before inkjet printers became an alternative. See drum plotter, flatbed plotter, electrostatic plotter and inkjet printer.


Drum and Flatbed Plotters
Both types of plotters actually "draw" the images. The drum plotter (left) wraps the paper around a drum with pin feeds. It moves the paper back and forth for one direction of the plot. The pens move across the paper, creating the other axis. The bed of the flatbed unit (right) determines the maximum size of the total drawing.







Drawing Pens
Pen plotters use drawing pens that provide infinite resolution, because the lines are actually drawn. All other printing devices print dots.
References in periodicals archive ?
Arroyo recalled that she herself pardoned Captain Gerardo Gambala, Capt Milo Maestrecampo, including other failed coup plotters "after they had pleaded guilty, were convicted and publicly apologized for their offense".
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Image Credit: Ramachandra Babu/Gulf News The Plotters
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Mimaki a global industry leader and manufacturer of wide-format inkjet printers and cutting plotters today launches the CFL-605RT Compact Flatbed Cutting Plotter that offers both creasing and cutting and will enable operations to create and deliver high quality costeffective designs smoothly and quickly.
Basically, you configure your plotter to record sonar, then at the end of the day (or week, whatever), take out the SD or MSD chip, plug it into your computer, and access www.Navionics.com to up- load and download contours.
She and a second alleged plotter, Sophie Douzal, the former wife of the president's brother FranE*ois Sarkozy, are nicknamed the "Stiletto Heel Firm" in the book.