TAN: Fonts

I'm having a problem with making a TrueType font, and I thought maybe someone
on this list might have some insight.

The font is ligatured, so each letter connects to the next.  I've
done this by having each letter extend slightly further to the right
than its stated character width.  When I install the font and test
it, it prints fine, with smooth joins, but on the screen, there
appear to be gaps between the letters.  I'm assuming there is some
conflict here between screen and printer resolutions, but I don't
know how to resolve it.

-- Terry