On 5/10/07 7:17 pm, "David Pilling" <flist@xxxxxxxxxxxxxxxxxxx> wrote:
> In message <4f2d08d299john@xxxxxxxxxxxxxxxxxxxx>, John Cartmell
> <john@xxxxxxxxxxxxxxxxxxxx> writes
>> That's the problem. I don't know - and didn't get the feedback needed.
>> In the past RISC OS pdfs have got the response from printers "Can't resolve
>> that page".
>
> Of course there is always the possibility that the specialist software
> handling your pdfs makes unwarranted assumptions about them - expecting
> them to originate from a particular Mac program.
>
> I suppose trying your pdfs in Adobe software would be the test of if
> they were correct.
>
> I wonder if GhostScript would be any better - it obviously has a much
> wider userbase than RiScript.
>
> I presume experiments are costly. I wasn't making a comment on the use
> of Macs, I was purely curious about why there was a problem.
>
> To put it another way, if you knew what the problem was it might help
> others, or someone might be able to fix it.
>
An issue I have encountered in the past is that printer's software expected
PDF files to be in CMYK as far as colour is concerned. That is now a
receding problems as more and more RGB is accepted, though it does mean that
you rely on the printer for RGB to CMYK conversion.
I don't think the software used by printers assumes anything about the
source of the PDF file, but I have found that PDF files which would load and
display correctly in Adobe Acrobat on a Mac did not always pass without
problems on the printer's set-up. They are using third party software for
imposition and separation and the issue has been, apparently, that such
software did not implement all possible PDF features. That also seems more a
problem in the past.
I handle the printing of a magazine originated using Ovation Pro and
supplied to me in PDF format. The PDF files seem to work OK with the printer
I use, though there are times when I need to work on the PDF files before
passing them on.
I cannot comment on the use of current versions of GhostScript or RiScript.
Mike Williams
