HELP: Printing Chart with QReport on Black and White Laser failed

I have made a chart with TeeChart (BCB 5.0) then i saved it as enhanced
metafile. The lines are colored (Red and Blue).
If i print a quickreport with an image on it (loaded the emf-file) the lines
are not present on a black and white laser printer. Preview is OK!?
Color-Printer is OK too!?
What is the problem?
We tried the demo application "TeeChartOffice" from -> the same

If we load the emf-file into MS-Word and print it to the same printer -> it
is OK.

thanks for a tip

Peter Heck