and stop the etching micropatterns having line widths as small as 0 2 mils may be formed by the process application_number US 33183789 A description referring now to fig1 the first station of multistation printing press 10 is an unwind station not shown in which an aluminized web 12 is fed from a roll as is known this station may contain web guiding tension controlling and splicing elements the aluminized web is typically composed of a transparent substrate such as a polyester film having a thickness of about 0 5 to 3 mils 1 mil 0 001 inch and on the upper surface of the film a vacuum evaporated aluminum layer having a thickness of about 500 to 1000 angstroms the web speed may range from about 100 to 150 feet per minute but is perferably about 110 to 130 feet per minute from the unwind station web 12 is fed into station 14 where it passes between print roller 17 and impression roller 18 where the upper aluminized surface receives a precise amount of a caustic resistant u v curable resin 15 from print roller 17 in a pattern corresponding to the desired aluminum pattern applied for example by flexographic plate not shown mounted on print roller 17 resin 15 is pumped from a reservoir to shallow pan 21 where.