Digital BW, The Print

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@mac.com>
>  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
>
>
>
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> Please visit the Group Homepage to check the Files, and other  
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>  If you wish to receive no emails or just a daily digest, or you wish  
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>  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. No personal attacks or  
> flames. Hostile, aggressive or argumentative users may be removed from  
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>  - Keep your posts and threads related to the group topic of digital  
> B&W printing. Users who persistently make off-topic posts may be  
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>  - By posting on this forum you agree to abide by the group rules and  
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> PRINT YAHOO! GROUP YOU EXPRESSLY UNDERSTAND AND AGREE THAT THE �OWNER�  
> AND �MODERATORS� OF DIGITAL BW, THE PRINT YAHOO GROUP SHALL NOT BE  
> LIABLE TO YOU FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,  
> CONSEQUENTIAL OR EXEMPLARY DAMAGES, INCLUDING BUT NOT LIMITED TO,  
> DAMAGES FOR LOSS OF PROFITS, GOODWILL, USE, DATA OR OTHER INTANGIBLE  
> LOSSES (EVEN IF THE� �OWNER� AND �MODERATORS� OF DIGITAL BW, THE PRINT  
> YAHOO GROUP HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES),  
> RESULTING FROM: (i) THE USE OR THE INABILITY TO USE THE DIGITAL BW,  
> THE PRINT YAHOO GROUP; (ii) UNAUTHORIZED ACCESS TO OR ALTERATION OF  
> YOUR TRANSMISSIONS OR DATA; (iii) STATEMENTS OR CONDUCT OF ANY THIRD  
> PARTY ON THE DIGITAL BW, THE PRINT YAHOO GROUP; OR (iv) ANY OTHER  
> MATTER RELATING TO THE DIGITAL BW, THE PRINT YAHOO GROUP.
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