noun
electrostatic plotter
A computing device that uses electrostatic charges to draw or print images on special paper. Technical term.
静電作図装置は、かつてCAD図面の出力に使われていた。
Electrostatic plotters were once used to output CAD drawings.
Compound of 静電 (seiden, 'electrostatic') + 作図 (sakuzu, 'drawing, drafting') + 装置 (sōchi, 'device, apparatus').