How do I save a image into a press quality PDF?

[rich2005]

Edit Just re-read Blighty post, that would do it times 25.4 out

I do not know how you have the correct size in pixels and that resolution but get that print size.

Can you go into Image -> Print Size and check that it looks something like this, give or take a little.



Since the printer accepts RGB images a PDF from Gimp should be ok, but still advise using Scribus. It is made for DTP and has various options for PDF creation.