I have managed to get the figures to print correctly by reducing the file size of the image being imported. I tried this after finding this post in the ArchicadWiki
http://www.archicadwiki.com/Bugs/Drawings%20with%20images%20do%20not%20print
Although the original file was just <1Mb (937kb), reducing the image size in image editor to around 250kb and reimporting seemed to fix the problem.
Erika/David, thanks for your responses.