Solution:

You can increase the DPI of DocuWare Printer through the Windows Registry.

*Before making a change to the registry please take a backup

  1. Run regedit.exe
  2. Navigate to HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\Print\Printers\DocuWare Printer\PrinterDriverData
  3. Change HorizontalRes to 300 and Vertical to 300