Some printer models (HP LaserJet 1200 etc) print empty polygons instead of
special characters (diameter, degree for example). How to print special characters?
Solution:
There are two ways to solve the problem, if PCL6 or PCL5e printer driver is installed:
* Set True-type font printing to raster type in the printer settings. For example you should
enable “Send TrueType as raster” (Finishing tab-Information) in HP Laser Jet 1200 printer settings.
* Replace Printer driver by PostScript-driver.