I made one mistake in saying that the psd file was RBG. It is CMYK but don= 't colour manage and your PS mode is still Adobe RGB. I am using MIS UC inks ie colour with Eboni in the black slot. I use "two"= blacks which are partitioned to achieve a gray scale. For warm these are K and LK. For Coo= l I use QTR's UC_NEUTRALIZER=YES function to blend LK, LM, and LC to create a cooler LK i= f you will and then partition this with K. For HPR my Limit_K is 90 and Boost is set = to 95 if that helps. You must be able to get much greater dMax. My understanding is that UT K i= s Eboni or near enough at least in terms of dMax. So your target should be around 1.6= 5. Print the Ink Separation file in Calibration mode with all the ink limits s= et to 100. By in Calibration Mode I mean CALIBRATION=YES, select the .calib file in the QTR = driver settings and use QUADTONE RIP CALIBRATION. This prints the file, a line for each in= k, at full throttle ie the 100 step is maximum for that ink. You should see that the = dMax of K is around 1.65ish. But if you were to print with each ink at full throttle th= en you would fload the paper so follow Roy's step 2 instructions and set the ink limit for eac= h ink. The 2200 can handle quite high numbers here...80-90. (A guide for Boost is 10 point= s above Limit K.) Having set the ink limits, print the Ink Separation file again in Calib mod= e (this is the last time you use the calib curve in the driver) and measure your 100 steps to s= et the partioning. --- In DigitalBlackandWhiteThePrint@yahoogroups.com, James Haney <jhaney@m.= ..> wrote: > Steve, > > That is the single most helpful overview of the process I have read so > far. > > Thanks for the input. I basically figured most of that out this morning = > at about 2:30AM. > > I don't know what printer/ink/paper combo you are using but after all > of that I seem to be finding that the UT inkset is incapable of > anything over 1.34 density. > > This is contrary to what I have read on-line but I tried a number of > curves and calibration files and cannot seem to get beyond that. > > Just so I am not missing something obvious, or inheriting ink limits > built into someone else's ink descriptors, do you have an ink > descriptor file that when printed should yield the maximum density on a = > 2200 printer? > > James Haney > > > > > On Jul 20, 2004, at 6:19 AM, Steve Kale wrote: > > > James > > > > Roy will probably chime in but let me see if I can help you a bit. > > > > The file you want to use is called inkseparation.psd and is an RGB > > file. > > When you print it make sure that you are using a curve which has the = > > setting > > CALIBRATION=YES. This produces a curve with a calib suffix. You > > also must > > go to Printer Features in the driver and then Quadtone RIP Settings > > and > > select Quadtone RIP Calibration. I am not sure about your second > > question > > but the basic process here is to choose which inks are going to be > > partitioned to create a gray scale (eg your black, light black etc). = > > The > > first step is determine ink limits which essentially are percentages = > > at > > which point you say I have enough ink for good paper coverage (on the = > > 2200 > > these are normally quite high). Ink Separation.psd is printed to > > determine > > this phase and then again with the ink limits set. Then you do the > > partitioning by essentially looking to see at what density the 100 > > patch of > > the next lightest ink kicks in at. For example, if patch 100 of > > light black > > (being the position where your next lightest ink is placed) has a > > density > > between that of the 55 and 60 of black then the GRAY_INK_2=LK, > > GRAY_VAL_2=57 > > (by interpolation). QTR then takes all this info and calculates a > > curve > > (Calibration now = NO ie it is only set to yes when you are printing = > > Ink > > Separation.psd). The final step is to linearize this info by > > printing a 21 > > step wedge and following the instructions if you have an Eye-One. > > You can > > get a visual impression of what the final curve looks like by running > > Graph-Curve and dragging the .quad curve into the terminal window and > > hitting return. > > > > Steve > > > > > > From: James Haney <jhaney@m...> > > Reply-To: DigitalBlackandWhiteThePrint@yahoogroups.com > > Date: Mon, 19 Jul 2004 23:33:31 -0500 > > To: DigitalBlackandWhiteThePrint@yahoogroups.com > > Subject: [Digital BW] Help setting up QTR on 2200 > > > > To anyone with experience with QTR on a Mac Epson 2200 UT inkset (not > > UT7) > > > > I have been having lots of problems getting setup some of them based > > upon the fact that MIS sent me mis-filled ink carts. Some tech issues > > getting CUPS to work on my computer with Panther. > > > > So, everything seems to be installed and working, but the prints are > > way off from what I am used to seeing with Piezography. > > > > I am using the UT-MK curves. > > > > The blacks are very weak (1.31) > > > > I am trying to follow the documentation to do a calibration but it > > seems to have several inconsistencies: > > > > 1) The documentation says to use the pattern test page > > "inkpattern.psd" > > but there is no such file included in the installer. The documentation= > > says that the file is a cmyk file. I found a file called > > inkseparation.psd and inkseparation.tif but these are both RGB files. > > > > I tried to print them anyway but the prints were missing lots of > > patches and contained no text. > > > > I just downloaded the old beta 8 installer and sure enough the file is= > > there, I will try it with that. > > > > 2) What is meant by the line " QuadTone RIP Curves is whatever curve > > set you want to split up into separate inks?" > > > > Any help getting through this would be GREATLY appreciated. My 1160 > > with Piezo is not working and I keep getting the blue selenium > > problem. > > > > I am on a MAJOR deadline to get some prints out the door for a > > customer > > by Friday. > > > > Thanks in advance. > > > > James Haney > > > > > > > > Please visit the Group Homepage to check the Files, and other > > resources as > > they are often being updated. > > > > http://groups.yahoo.com/group/DigitalBlackandWhiteThePrint > > > > If you wish to receive no emails or just a daily digest, or you wish = > > to > > unsubscribe, please edit your Membership preferences by visiting this = > > same > > page. > > > > Please follow these basic guidelines: > > - As threads develop, trim off excess portions of earlier messages to = > > keep > > them short. > > - Good manners are required at all time. 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Message
Re: [Digital BW] Help setting up QTR on 2200
2004-07-20 by Steve Kale