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Output | Software Solutions | Proofing | Color, Screening and Calibration | Scanning | Digital Photography | Consumables | POS
Home | Contact Us | Submit Troubleshooting Info | Search | Help
Output | Software Solutions | Proofing | Color, Screening and Calibration | Scanning | Digital Photography | Consumables | POS
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Product |
Prinergy 1.1; Prinergy Connect 2.0 ; Prinergy Connect 2.1 | |
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Operating system |
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Error |
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Symptoms |
QuarkXPress 4.0x or 5.x automatically converts RGB images to CMYK when outputting fat PostScript (PS). . To reproduce the problem: 1. Place an RGB TIFF image in QuarkXPress 4.04. 2. Create two PostScript file, one with images (fat) and the other without (thin). 3. Refine the two files and compare the resulting PDFs. 4. Use PitStop to measure the CMYK recipes. |
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Cause |
With thin PostScript, images are omitted and QuarkXPress does not convert the colors. In the thin workflow, Prinergy does the color conversion when it is refining the file. The problem arises when a job uses mixed conversion methods. The conversion in QuarkXPress will result in a different CMYK recipe when compared to a file color converted in Prinergy. | |
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Solution |
In QuarkXPress 4.1, routines are included in the print engine (the part of the application that generates PostScript) that allow the user to print either within an RGB or a CMYK color space. The control for this setting is located in the Print dialog: Print Dialog > Output Tab > Print Color. The options in this popup menu are: B&W, Grayscale, Composite CMYK, and Composite RGB. Selecting Composite CMYK will automatically convert all RGB images and QuarkXPress elements to the CMYK model. It will leave CMYK images and elements alone. Selecting Composite RGB will automatically convert all CMYK images and QuarkXPress elements to the RGB model. It will leave RGB images and elements alone. Obviously, anytime there is automatic conversion, there is the possibility of unexpected or undesirable results. To minimize these, customers should be counseled to stick with a single color model in any given document for the most predictable results. . QuarkXPress 6 has the option (PrintColor "DeviceN") of outputting colors as defined in the source images which will allow an RGB placed image to output as RGB. Permanent fix: |
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See also |
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Keywords |
color, PostScript, Quark |
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Technical contact(s) |
James Bredenhof |
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Submitted by |
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Date submitted |
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