Electrostatic Paperholder

e 19.8 ELECTROSTATIC PAPERHOLDER Photographers, draughtsmen, compositors, lithographers, artistic as well as technical designers, and, of course, architects use drafting tables which should allow quick and safe exchanging, positioning and fixing of large sheets of paper. For this purpose, an electrostatic paperholder has significant advantages over clip-on systems or bits of drafting tape. A wide range of equipment is currently available for putting graphics infor- mation on paper. Such equipment in- cludes printers, plotters, X-Y and X-t recorders. In all of these, it is essential that a pen device or printer head can move with respect to the paper surface. In most cases, paper is held on a roll, which is rotated to achieve movement in the Y-direction, while a carriage is used to achieve movement of the roll, or the pen, in the X-direction. There are, how- ever, also systems in which the paper is held flat and secured on the working table, while the pen is moved across it in both...