2007/8/30, Stewart Noy <windrunner at mweb.co.za>: > Louis Desjardins-4 wrote: > > > > 2007/8/28, Stewart Noy <windrunner at mweb.co.za>: > >> > >> > >> Ok, so having done a bit more digging I discovered that the black > >> registration colour is in fact not what I'm looking for as it > represents > >> 100% on CMY and K when printed, and is to be used for, yip you guessed > it > >> registration marks. > >> > >> So having answered my own questions, a new one would be: > >> When is it best to use a Plain Black (0C, 0M, 0Y, 100K), and a Rich > Black > >> (63C, 52M, 51Y, 100K)? > > > > > > Hi Stewart, > > > > Here are the values we use on offset presses for rich black. > > > > 100K - 60C - 40M - 40Y > > > > This info could make it into the wiki as this question is raised from > time > > to time. If anyone has a minute to put it there, please do. > > > > Also, it is unadvisable to use rich black for text purposes. Generally > > speaking, using more than 3 inks for any text color is more likely to > > create > > registration issues, especially if the text is used at small typesize. > > > > HTH > > > > Louis > > > > > > And what about using a rich black for when text is placed over an image? > To > make it stand out more. The text size is 7.4.
For text below 12 points, I would advise not to use rich black with 4 inks. You could use a 100K and C50 instead, if you really want it. But again, registration issues might occur with smaller typesize. Depending on the font and face you use. You'll be a better judge. I only point to the issues that might or will occur and I only want to explain a bit so you understand what's going on. You could also discuss this particular issue with your printer. Louis Stewart -------------- next part -------------- An HTML attachment was scrubbed... URL: http://nashi.altmuehlnet.de/pipermail/scribus/attachments/20070830/889bbedb/attachment-0001.html
