Paper transport and paper stabilizing system for a multicolor electrostatic plotter

A method for fabricating a vacuum attach means for registration of a record material on a transport belt with respect to a writing head in an electrostatic plotter, line printer or the like comprising the steps of:

• etching a first series of vacuum receiving apertures in a paper holding surface of a thin metallic strip along the length thereof;
• etching a second series of closely spaced vacuum attachment apertures in said paper holding surface of said strip along the length thereof, and spaced apart from said first series of apertures by an intervening area, to thereby form a vacuum contact region on said paper holding surface of said strip for conformably adhering a record material thereto;
• etching a series of channels in an opposed surface of said strip to a depth sufficient to contact said first and second series of apertures, while not penetrating though said intervening area of said paper holding surface separating said first and second series of apertures, and thereby connecting by means of each channel said first series of apertures with said second series of apertures;
• bonding said opposed surface of said strip containing said channels to the surface of said transport belt to thereby fully enclose said channels and form tightly sealed vacuum chambers disposed beneath said paper holding surface of said strip for transferring vacuum from said first series of apertures to said second series of apertures.