Clinton,<br><br>If you find a way to get only K channel from Inkscape, let me know. <br><br>GIMP: when I save Jpegs in Gimp, even if I change the mode to greyscale, the image that is output still has CMY black, when included into a pdf by Scribus. How I dealt with this was using Scribus' built-in greyscale option for each image.<br>
<br>Inkscape: I have not found a way to manage channels in Inkscape yet. It seems to default to CMYK, even for pure black documents.<br><br>ImageMagick, I have not yet tried.<br><br>I would really like a high-quality PDF processor for Linux.<br>
<br>Please do let us know your success!<br><br clear="all">Thanks, Love, Peace,<br>Link<br>
<br><br><div class="gmail_quote">On Tue, Jan 19, 2010 at 11:27 AM, Wilfred van Rooijen <span dir="ltr"><<a href="mailto:wvanrooijen@yahoo.com">wvanrooijen@yahoo.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;">
Hi,<br>
<br>
For the conversion of figures you might look at ImageMagick or GIMP, both of which are available for linux. For PDF, maybe InkScape can help? I think you can run InkScape in batch mode.<br>
<br>
Regards,<br>
Wilfred van Rooijen<br>
<br>
--- On Tue, 19/1/10, Clinton Gormley <<a href="mailto:clint@traveljury.com">clint@traveljury.com</a>> wrote:<br>
<br>
> From: Clinton Gormley <<a href="mailto:clint@traveljury.com">clint@traveljury.com</a>><br>
> Subject: Re: [XeTeX] Outputing PDFs in CMYK ColorSpace<br>
> To: "Unicode-based TeX for Mac OS X and other platforms" <<a href="mailto:xetex@tug.org">xetex@tug.org</a>><br>
> Date: Tuesday, 19 January, 2010, 3:28 AM<br>
<div><div></div><div class="h5">> Hi all<br>
><br>
> > > I'm producing PDFs with xelatex destined to be<br>
> printed in a newspaper.<br>
> > > The printers require the PDFs to use a CMYK<br>
> colorspace, but I can't find<br>
> > > any option to set this..<br>
> ><br>
> > You need provide more information about the document:<br>
> do you have<br>
> > external figures/graphics? What<br>
> colorspace do they use? How is<br>
> > color used in the document -- just a few specific<br>
> colors or<br>
> > many colors?<br>
><br>
> Typically, these adverts just use black on white, and<br>
> include an image<br>
> (uploaded by a customer), which could be pretty much<br>
> anything.<br>
><br>
> > Is this a 1-shot project or something you will be<br>
> doing many times?<br>
><br>
> Many times - it is an online ad booking service.<br>
><br>
> > The CMYK conversion needs to be checked for your<br>
> documents. The OP<br>
> > does mention<br>
> > some of the quick checks the printer made using Adobe<br>
> Acrobat that<br>
> > found problems<br>
> > with the color usage in the document. Such<br>
> checking is standard<br>
> > practice, and you<br>
> > should try to find a way to perform the checks<br>
> yourself.<br>
><br>
> Michiel Kamermans suggested "quite a box of tricks", but<br>
> our servers run<br>
> linux, and that app is windows/mac only.<br>
><br>
><br>
> > Post-processing using commercial tools may give better<br>
> CMYK results.<br>
> > If you use external figures you may get better results<br>
> converting them to CMYK<br>
> > before processing with xelatex as the conversion can<br>
> be tweaked for each image.<br>
><br>
> Excuse my ignorance here, but is that a process that can be<br>
> automated?<br>
> I'm guessing that if an image doesn't include a profile,<br>
> then you're<br>
> stuck with checking it manually.<br>
><br>
> ><br>
> > Many low-end tools do not convert RGB to CMYK<br>
> reliably. You may end up with<br>
> > "black" that has CMYK with small CMY values or map a<br>
> range of colors to the<br>
> > same CMY values. There are tools that help check<br>
> color usage in a document --<br>
> > many printers use them and will refuse to print a file<br>
> that has<br>
> > problems, but of<br>
> > course it is better if you can provide a high-quality<br>
> PDF from the start.<br>
><br>
> Any of them that work on linux?<br>
><br>
> thanks<br>
><br>
> Clint<br>
><br>
><br>
><br>
><br>
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