DPI in <cfdocument>

I am attempting to use a printable image using <cfdocument> by generating a
PDF. Is there a way to include a 300dpi background image so it can be sharp.
I tried to use a 300dpi jpg in the code, but it came out HUGE. I need to
generate a multiple page document with the same base image and dynamic
information included from a database.

Thanks

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Wally Kolcz
Developer / Support