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Yes, RGB images can cause errors in making the PDF. I have never tried to identify the technical reason for this, but have seen it happen anytime an image is left in RGB instead of CMYK. You need to check all images in Photoshop before sending the files, or use a diagnostic program such as Pitstop to catch and correct RGB's. Other possible outcomes for images left in RGB include no image where the image should be and black images instead of color. If you get into another situation where you cannot run a page and no one is around to help troubleshoot, try this long, but useful way of getting the page out: in Quark, export the page as an EPS, drop it into Distiller to make a PDF, then save the file as an EPS and place it back onto the Quark page. It's a lot of work, but it can get you out of a jam until you can find the person who gave you hte RGBs. Bill Wardwell ----- Original Message ----- From: "Chuck Miller" <[EMAIL PROTECTED]> To: <[EMAIL PROTECTED]> Sent: Sunday, September 28, 2003 1:50 PM Subject: [PDF] Identify RGB, convert to CMYK... > > The PDF list is a service provided by PDFzone.com | http://www.pdfzone.com > __________________________________________________________________ > > Just finished producing a 40 page newspaper for the first time. Built pages > in Quark 4.11. Converted to PDF with Quark's Export as PDF and Acrobat 5. > (Somewhere in the session I saw "Creo" or something flash on screen; perhaps > that's a third party Xtension; or not.) > > There was one to ask technical questions, so I used whatever settings were > established at the job site. > > A few of the pages errored out in Distiller. One was fixed by substituting > fonts. For the others I exported a PDF ad from Acrobat 5 as a TIFF (which > would be RGB), converted to CMYK in Photoshop, and placed in Quark. Small > type gets pixilated but otherwise that worked. > > Under close deadline, I had more questions than answers. I wondered if an > RGB PDF could error the PDF-making process? Wondered if I can identify RGB / > CMYK in Quark? Couldn't even find a way to identify the color mode in > Acrobat and then convert to CMYK. Wondered if the fact that the TIFFs > exported from Acrobat 5 were RGB meant that the original PDFs were also RGB? > > Answers and suggestions invited... > > Chuck M > > > > To change your subscription: > http://www.pdfzone.com/discussions/lists-pdf.html > > To change your subscription: http://www.pdfzone.com/discussions/lists-pdf.html
