Hey Jenia,
You can actually use ActiveX and Internet Explorer to print the document. Rather than actually programming it all of yourself, you can use the VI that the report generation toolkit uses to print HTML files. If you look in the Program Files/LabVIEW X.X/vi.lib/Utility/NIReport.llb for Print HTML Report using IE.vi, you can use this VI to pass a path and printer to print any HTML file. Please let me know if you have any problems finding this VI or have any further questions.
Thanks!
Andy F.
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National Instruments