When you say IP network printer, do you mean
1. that the computer running the DOS application has the printer defined as
a Local Printer on a Standard TCP/IP port
or
2. that the computer running the DOS application has the printer defined as
a Network Printer that is defined on a Windows 2000 (or 2003) print server
computer
I'm not familiar with this particular printer, but you may find that if you
define the "printer" with a "generic" type driver such as the HP LaserJet 4
or "Generic Text Only", and print to that from a DOS application it may
work.
The Konica Minolta site says that the "Crown version" of these printers
support HP PCL, which is why I make this suggestion.
If you are using case 2 above, you may need to add a second "printer" on the
print server and associate the "generic" driver (HP Laserjet 4 or Generic
Text Only) driver with that "printer". The computer running the DOS
application could then have this second printer added as a Network Printer
and use the LPT port mapping using the "net use" command.