PNG graphics and transparency when creating a PDF

[drubinoff]

Hi,

I have transparent PNG files which appear correctly in Revit 2009. However, when I print to a PDF, the transparency disappears and the transparent areas become white blocks--blocking out parts the surrounding drawing.

What's the trick to get PNGs to remain transparent when creating a PDF?

Thanks,
Derek

[drubinoff]

Using "raster processing" in the print dialogue box seems to work, except that I lose the vector crispness of my drafted lines.

[drubinoff]

Five and a half years later, this is still an issue in Revit. Even with a 32-bit PNG, transparent areas print as "white" either to my printer or to a PDF. Is there a solution?

[david_peterson]

How did you generate the png.
I just created a one and it's working fine printing as raster.

[drubinoff]

The PNG, created in Photoshop, works fine, except for the part that's supposed to be transparent. The transparency works on screen but prints (or saves as PDF) as white.