Hi, I'll try to keep it as simple as possible: To print a colour managed work nowadays you need four things: 1. A profiled monitor. 2. A profiled printer or press. 3. Knowing which CMYK ICC colour profile describes your papel-press-inks combination. 4. Knowing which RGB ICC colour profile describes your pixel-based images. Once you have (1), you don't have to do much afterwards with the monitor but keeping it as it is (that is: profiled and properly mantained). As for (2), you don't profile the press. That's something that the printer (human beings, not machines) do. Fortunately, nowadays standardization of presses is very common, so, presses are usually profiled and set to print well known standards, whith colour data and procedures well-stablished. That leads to (3): The ICC CMYK colour profile of the printer. This is perhaps the most important of the four points. This is something your printing company must tell you, as in "we print offset using ISO Coated v2 CMYK profile, blah blah, blah...". You've got to set your CMYK according to this CMYK profile. If you don't have the precise data, you can make an educated guess, setting your CMYK output profile to a reasonable standard common in the area you work. That is what US Web Coated (SWOP) v2 "could be", but that depends on the kind of work you want to print (paper, inks, method of printing, etc.). Then (4) should describe the RGB colour profile your pixel images have. Once you've got all this four things, you prepare your work in InDesign. No need to convert the images to CMYK prior to making the PDF. When you have the work ready, you export to PDF/X-4 with "Convert to destination, (preserve numbers)" and the CMYK colour profile "Destination" set as the colour CYMK profile you selected point (3). That should give you a press-ready CMYK PDF profile. Of course, this is a very trimmed version of what you've got to do, but I tried to give you a summary so that you get the idea of what you've got to do. Hope it helps
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