[argyllcms] Re: Black point

  • From: Klaus Kompatscher <kkompatscher@xxxxxxxx>
  • To: <argyllcms@xxxxxxxxxxxxx>
  • Date: Thu, 03 Feb 2011 10:40:01 +0100

Thanks for your reply.
Well yes I use Barbieri LFP, and I use this target already for a long time.
I forgott to mention that I am using brown ink in place of magenta, this is
why it looks not like a cmyK printer. If I use magenta everything works
However I repeated the measurement and got the same result. I did a test
with another media which became even a higher black point.

On my opinion this should not happen although magenta is replaced with
brown. All colors ti3 file with about max. ink amount (270%) show a much
lower L value.

Klaus Kompatscher

On 01.02.2011 2:15 Uhr, "Klaus Karcher" <lists@xxxxxxxxxxxxxxxxx> wrote:

> Klaus Kompatscher wrote:
>> Hi
>> can anybody explain me why I get a black point of L 65
>> regardless the pure black is L 19?
>> I checked the L values for max. ink patches and could not find any patch
>> with a value even close to L 64.
>> I attach the ti3 and icc files.
>> Any idea?
> The measurement file seems to be messed up: the 380nm and 390nm bands
> are way to high (up to 220) and even when I remove these apparently
> corrupted bands, there is not much that looks like data from a CMYK
> printer. Most likely there was a calibration error when you measured the
> data. What kind of instrument and software did you use? Barbieri?
> Klaus Karcher

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