Circa 1990 I was working/studying in university on a mix of 1024x1024 1 bit per pixel XTerminals and workstations (Sun, Apollo?) with somewhat better resolutions and colors. We had one NeXT too. Printers where mostly dot matrix, with some lasers, A4 format (Europe here). Nothing would have prevented sending a Postscript screen output to a printer, with some white space around due to different geometries. Actually I learned Postscript in 1996 to print some stuff directly instead of drawing it using Word or whatever.