Kai-Uwe Behrmann píše v St 27. 08. 2008 v 20:45 +0200: > Am 27.08.08, 16:49 +0200 schrieb "Gerhard Fürnkranz": > > -------- Original-Nachricht -------- > > > Datum: Wed, 27 Aug 2008 13:41:11 +0200 > > > Von: "edmund ronald" <edmundronald@xxxxxxxxx> > > > > You print a target *with all color management options turned off in > > > the print path* create a profile with some profiling software, or > > > have someone create it for you, and then convert your images to that > > > profile with your image processing application and print them via the > > > same print path as your target. There is no requirement for the print > > > chain to be profile-aware, in fact what you want to do is switch all > > > the color processing in the print path OFF. > > > > My understanding is though, that hpijs does not support raw CMYK printing > > (like Gutenprint does) but only accepts RGB, and the driver converts RGB to > > CMYK internally using a printer model specific, built-in, hard-coded 3D > > device link CLUT (which I guess is supposed to do some kind of generic > > perceptual sRGB to printer conversion). So it is IMO not really possible to > > turn the color processing off but one can only (double-)profile the virtual > > RGB colorspace emulated by the driver, which is likely suboptimal. Please > > correct me, if my understanding of hpijs is outdated and does not longer > > apply in the meantime. > > I have profiled a HP printer for use with standard print queues. > It behaved like most other RGB printers ... suboptimal. While discussing the RGB/CMYK drivers - is anyone using a CMYK workflow (incl. ink limits, linearisation) with CcMmYKk (those light/dark inks) inkjet printers using gutenprint/cups? In particular, gutenprint has lot of advanced settings (density, ink limit, grey transition, light ink transition; with gutenprint gimp /cinepaint plugin also curve editor) for Epson Photo Stylus printers. P.S. At the moment, I use RGB printer driver settings + argyllcms to make the profiles and guess whether it is wor Best regards, Milan Knizek knizek (dot) confy (at) volny (dot) cz http://www.milan-knizek.net - about linux and photography