[comp.lang.postscript] Rounding errors on LaserWriter II?

rjc@aries5 (Russ Chamberlain) (04/14/89)

I have experienced problems with character alignment on the LaserWriter II
at work.  The discrepancy shows up best when an 80x25 block of white-on-black
chars (an IBM PC screen dump of reverse-video chars) is printed.  I get 
blank lines (one LaserWriter-pixel wide) appearing as ugly white streaks; both
vertical and, more often, horizontal.

I set about to fix the problem, since the printouts involved are destined for
publication, and after intense sessions of swearing and hair-pulling, I heard
a rumor that some or all PostScript interpreters have a numerical rounding
error in them.  I also heard that there is a relatively simple fix.

Could someone please enlighten me?  Please send your replies to this newsgroup.


  - Russ Chamberlain

PS -- Sorry if this is an old topic, but I had this account made just to be
      able to read from and post to this news group. I'M DESPERATE!!