QTR-Quadtone RIP

Jamie,

Where can I download this ink seperation page?

Thanks,

Leen


--- In QuadtoneRIP@yahoogroups.com, "Jamie Creed" <jlcreed@...> wrote:
>
> Cheers Joe
> 
> you've just confirmed what I arrived at earlier this week. I have 
> now produced the Ink Seperation Page for use with an X-Rite Pulse. 
I 
> use Colorport to produce the target, then I seperated the target 
> into 2 parts; firstly, the TID which I printout on a colour 
printer; 
> and secondly, the ink seperation patches (6 x 21 step wedges) for 
> use by QTR with my monochrome ink printer. Now I can read all the 
> patches of the Ink Seperation Page in less than a minute, and enjoy 
> the privilage of looking at the Lab values of the inks before I 
> start creating curves. Also thanks to Winfried I also enjoy reading 
> my various 21 step curve iterations in doule quick time. Again, 
> thanks for your reply,
> 
> Jamie.
> 
> --- In QuadtoneRIP@yahoogroups.com, "koloshor" <koloshor@> wrote:
> >
> > --- In QuadtoneRIP@yahoogroups.com, "Jamie Creed" <jlcreed@> 
wrote:
> > >
> > > I've referred to both of your work/files before I started this 
> > > little project, and they were both very helpful and led to      
> > > success 
> > > in scanning the 21 step wedge with my Pulse setup.
> > > 
> > > Now I want to try and go 1 step further and try to scan the Ink 
> > > limiting/curve creation targets in calibration mode with my     
> > > Pulse 
> > > setup. At the moment I do as you do Ernst and spot scan a 
random 
> > > number of patch's which visually look close to the Ink 
Limits,   
> > > but being able to scan all patchs in 1 swoop would be good use  
> > > of my equipment and would enable me to monitor suppliers ink    
> > > formulations for any variance and also keep an eye on the paper 
> > > suppliers coatings, again for any variance in production batchs.
> > >
> > First, QTR targets are "weird". Only two of the three colors are
> > actually used. If memory serves, the red channel is the density,
> > 0-255. (you can check this easily in PhotoShop). I think the blue
> > channel is the "ink selector". The selector is binary...
> > 
> > 1 = ink 1
> > 2 = ink 2
> > 4 = ink 3
> > 8 = ink 4
> > 16 = ink 5
> > 32 = ink 6
> > 64 = ink 7
> > 128 = ink 8
> > 
> > If you want to do something like having equal parts of two inks, 
> turn two channels on at the same time by adding their numbers.
> The big question, are you using cyan, magenta, yellow, and black 
> inks,or a pure monochrome set? The Pulse reads a strip at the top 
of 
> the chart called the "Target ID", or TID, that's in an octal (base 
> 8) code of cyan, magenta, and yellow. The TID tells the pulse how 
> many patches there are in each row, and on the chart, in total. 
> The "Row ID" at the beginning of each row identifies the row 
number. 
> The TID and RID need to be in the right colors. If you're using 
> color inks, use a density of 128 and use the selectors to get the 
> proper CMYKRGBW codes. You can't print them TID or RID with 
> monochrome inks. So if you're using a monochrome inkset, you need 
to 
> print a TID and RID on a color printer, at the proper size, and 
glue 
> it over the monochrome chart.
> 
> Or make a chart for the color printer with just a TID and RID, no
> patches, and a chart for the monochrome printer with just patches, 
no
> TID or RID, and run the paper through both printers. Frankly, I find
> cutouts easier.
> > 
> > Ciao!
> > 
> > Joe
> >
>