I had a similar problem with plotting from Bruker AC consoles, and
also from an EPR machine. Fortunately, the handshaking only took
place at the start of the plot, so it was fairly simple to eavesdrop
on the serial connection, figure out just what the console wanted to
see, and then stick in a modest PC to emulate the plotter, receive
the data, and send it off to whatever kind of printer I felt like
hooking up to the PC. It sounds like your situation may be more
complicated, if there is periodic communication with the plotter,
but you could still probably do something like the same thing.
I used a neat little piece of software called serialtest made by
Frontline Test Equipment, Inc.; the company has newer versions with
more capabilities and simpler requirements on the eavesdropping
computer. Their web site is http://www.fte.com. There are probably
free ways to accomplish the same thing, but I haven't looked into
them; the software was not very expensive.
Once the requirements are known (and it is possible that someone
with Jeol could give you the information without the need for
eavesdropping), it is fairly straightforward to write a little
program (I used perl, on a FreeBSD or Linux OS) to do whatever
emulation you need.
Good luck.
-- Steve Philson philson@nmr.chem.umn.edu Director NMR Lab 612-626-0297 Chemistry Dept. University of Minnesota