Re: blotting

[Mats Bengtsson]

> address@hidden writes:
> > > Note that the blotting does work more or less at 600 dpi -- run
> > > 
> > >   mf "\nonstopmode; mode:=ljfive; input feta20.mf;"
> > >   gftodvi feta20.600gf
> > 
> > This is very odd.
> > If you use ljfour instead of ljfive it does not work at all (i.e. no 
> > roundings
> > at all)
> > Does anybody have an explanation of this?

From $TEXMF/metafont/misc/modes.mf

mode_def ljfour =                   %\[ HP LaserJet 4 (600dpi)
  mode_param (pixels_per_inch, 600);
  mode_param (blacker, .25);
  mode_param (fillin, 0);
  mode_param (o_correction, 1);
  mode_common_setup_;
enddef;

mode_def ljfive =                   %\[ HP LaserJet 5 (600dpi)
  mode_param (pixels_per_inch, 600);
  mode_param (blacker, .75);
  mode_param (fillin, .3);
  mode_param (o_correction, 1);
  mode_common_setup_;
enddef;

As Han-Wen said, it's time to buy the MF book to figure out
what this means.

   /Mats