Re: [artworks] Colours not displaying properly in PDF on PC
- From: Andrew Conroy <a.m.conroy@xxxxxxxxxxxxx>
- To: <artworks@xxxxxxxxxxxxx>
- Date: Mon, 23 Nov 2009 17:54:20 +0000 (GMT)
In article <a6db69be50.martin@xxxxxxxxxxxxxxxxxxx>,
Martin Wuerthner <lists@xxxxxxxxxxxxxxx> wrote:
> In message <50be64afa8a.m.conroy@xxxxxxxxxxxxx>
> Andrew Conroy <a.m.conroy@xxxxxxxxxxxxx> wrote:
> > Thanks for the detailed explaination Martin. I've since tried another
> > test, and created a PDF of a Word document (using CutePDF to 'print'
> > the PDF out of Word). The document had text in pure C, M, Y & K which
> > when displayed in Adobe Reader showed as a different, more vivid,
> > colour than the C, M, Y & K samples exported from Artworks! Surely
> > this shouldn't be an artifact of the different display methods as
> > they're both being displayed in the same software, albeit generated
> > from different software. Does Word (or CutePDF) define CMYK
> > differently in the PDF to the way Artworks does?
> Of course. Just like the RISC OS printing system, the Windows printing
> system is RGB only, so you get RGB colours when printing via CutePDF.
> I was not aware you could use CMYK colours in Word anyway, but even if
> you can, they will no longer be CMYK colours when they get to the
> printer driver, so, Word has to convert the CMYK colours to RGB and it
> probably uses naive conversion.
Ah, I see, thanks.
> If you want bright, artificial RGB colours for screen display, why do
> you not simply use RGB colours to begin with? CMYK colours are for
> printing using a fully CMYK capable printing chain and they require
> some care to get right.
The reason for creating it in CMKY was because it was to be a diagnostic
page for somebody to use with their possibly problematic inkjet printer.
I was hoping to print out blocks of each colour individually.
Thanks,
Andrew
--
+--------------------------------------+---------------------------------+
| Andrew Conroy, Owl-Art Un-Ltd. | email: a.m.conroy@xxxxxxxxxxxx |
| Using an Acorn RiscPC SA110 | |
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The impossible I can do at once, miracles take a little longer!!
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