Thanks for your response.
On the Windows98 PC: after removal of the printer drivers, the printer drivers are reinstalled. The installation requires the original Win98 CD-ROM to be placed to install the win98 (first edition) drivers.
The printer emulates the Epson LQ-2550. When usining the correct LQ-2550 drivers of win98 (first edition) the problem is the same.
I did not install the printer drivers from win98SE on the windows 98 (first edition) PC because of possible incompatibilities.
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I could install an additional printer that writes text (ASCII) to a txt file.
If this file can be read by typing - type "fname.txt" in dosbox it must be simply possible to get the file somewhere of somehow on paper.
Another approach is a win98 (first edition) upgrade to win98SE. In that case the win98 configuration is the same as on the old laptop with win98SE I used to isolate the problem.
The accounting program is not available as backup, the accounting data is OK and can be backed up. The risk is that with an upgrade the accounting program will fail. In that case the accounting program cannot be used anymore.
The simplest solution is using another accounting program, which are even available free of charge. It will take a long learning curve for the person doing the accounting all those years.
For the time being, I will look for a solution and tips / advise / reactions on this problem are appreciated.
W