[argyllcms] Re: Problem with packaging profile
- From: Vladimir Gajic <vgajic67@xxxxxxxxxxxxxx>
- To: argyllcms@xxxxxxxxxxxxx
- Date: Mon, 14 Nov 2011 14:21:38 +0100
Hello Alexey,
I´ve allready tried smoothing in PO (value = 10, max). My results
basically stayed the same -aldough the dot gain curves looked quite
nice & harmonic. The major problem was the separation. It was full of
bumps, especially in the black channel.
I´m quite aware that this problem can be partially solved using
PrintOpen -but the profiles are IMHO far from being optimal. My idea
behind this posting was something like "pushing the limits of argyll",
since the print you evaluated ist almost a common condition in the
packaging field.
Thank´s for reply anyway.
Vladimir
2011/11/14 Alexey Gribunin <Gribunin@xxxxxxx>:
> Hello Vladimir!
>
> Your printing process has very bad gradation curves. Please take a look on
> dot gain curves on screenshot. You will not get good results with such dot
> gain curves.
> So first of all you need to smooth it.
> You can do it in PrintOpen, I would suggest to use smoothing factor at least
> 9. After that you can create ICC profile wherever you want.
> ArgyllCMS colprof also has average deviation feature -r (something like
> smoothing), but it cannot do such powerfull smoothing you need.
>
> Best regards,
> Alexey Gribunin.
>
> Vladimir Gajic wrote:
>>
>> Hello@all
>>
>> in the attachment you will find ti3-data from a packaging print I扉e
>> tried to profile using Argyll V.1.3.5.
>> No matter what I did, I wasn愒 able to get a decent result, so maybe
>> on of you guys have a better idea.
>> The print is very inconsistent, especially the gray-axis. Anyway -this
>> is quite a real-life situation in packaging.
>>
>> I tried also to build a profile using other packages (e.g. PrintOpen).
>> The results where somehow better, but still not satisfying.
>> Maybe this example also could be a good test-item for Graeme?
>>
>> Some parameters needed:
>>
>> Total area coverage: 340%
>> The separation should be UCR (under colour removal)
>> The black should start at approx. 25% an reach his maximum at 95%
>>
>> Thank愀 in advance for any input.
>>
>> Vladimir
>
--
Vladimir Gajic
[workflowConsulting.org]
Grünebergstr. 85
22763 Hamburg
Germany
Phone: +4940 18174180
GSM: +49176 63645405
mailto: vgajic67@xxxxxxxxxxxxxx
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