on 20/10/04 12:21 pm, matthew ward wrote: > I have just got off the phone from a large prepress house because some > tear sheets have rather more black ink on them than is ideal. (Like > the paper is buckled where the dark image is.) > > They originally stated that euroscale coated v2 would be fine. > Apparently they have a company policy to respect the RGB profiles but > strip off all CMYK profiles to keep the total ink limit to 300%. > (AFAIK Euroscale is 350%). Does anybody know how widespread this > behaviour is?
Observing ink limits is important as too much ink in isolated areas can cause colour problems elsewhere and way too much can cause the web to tear - and with the speed that web presses work there are serious consequences... The prepress house should have checked the ink limits before running the job. Most prepress workflows do this automatically. Euroscale coated is only suitable for quality litho work as it will put anything up to 360% in the shadow areas. Photoshop comes with additional profiles for US magazine work, but nothing that is suitable for UK/European publications. Stripping or ignoring CMYK profiles is very common. As the data is already in a format that requires no further conversion the printer doesn't care what the profile is. Owning the printing device gives the printer the sort of power which means that they don't have to bother with pesky colour management issues - if it prints wrong it's YOUR problem. > And what on earth are we meant to do when the client specifies CMYK. > And yes I did supply RGB (Adobe 98) as well before anyone advises me to > :-). Send your RGB files to us and tell them to expect an invoice :-) Alternatively, read one of our help pages and follow the link to where you can download some profiles that are more suitable for UK/Europe. <http://prometheus.idea-digital.com/phpbb2/viewtopic.php?t=212> Whatever you do DON'T try and make your own Euroscale-like profile with 300% ink limits in Photoshop. Photoshop does not have the technology to produce anything other than a very crude attempt at an ICC profile. The results normally range from disappointing to awful. Regards -- Martin Orpen Idea Digital Imaging Ltd -- The Image Specialists http://www.idea-digital.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
