QTR-Quadtone RIP

It is in your QTR folder already.
Mark

On Mar 6, 2007, at 2:56 AM, leenvanbellen wrote:

> 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
>>>
>>
>
>
>
>
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