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How to handle DeviceLink Profiles?

Offline virtu Posted 10-12-2009 - 05:54 AM
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Hello Guys,

I profiled a new Media and i also created some DeviceLink Profiles from Swop_v2 to my Media.icc

The problem is: i have no clue how to create a workflow with devicelinks.

What do i have to do in Onyx to use them?

If i get a TIF with Swop Profile embedded, is my input Profile SWOP or the Devicelinkprofile?

Would be great if i could get a little hint from somebody who knows more about it then i do.

Cu, virtu
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Offline virtu Posted 10-19-2009 - 07:06 AM
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Hello,

Is it correct to use the devicelink profile as a input-profile?

virtu
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Offline MarcoRoos Posted 10-23-2009 - 07:13 AM
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(10-19-2009 07:06 AM)virtu Wrote:  Hello,

Is it correct to use the devicelink profile as a input-profile?

virtu

Hi,

Why do you want to use a Device link profile?

The device link profile, if used, should be set as the output profile. The input profile is identifying the file's color space and should not be touched.

Can you please explain what you would like to achieve by using a device link profile?

Ciao!
Marco
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Offline virtu Posted 10-23-2009 - 07:33 AM
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Hi,

Well, i want to save ink, and i heard that prints look cleaner in primary colors.
Why shouldnt i use Device-Links?

virtu
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Offline MarcoRoos Posted 10-23-2009 - 07:55 AM
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(10-23-2009 07:33 AM)virtu Wrote:  Hi,

Well, i want to save ink, and i heard that prints look cleaner in primary colors.
Why shouldnt i use Device-Links?

virtu

Hi Virtu,

A device link profile connects input to output profiles without using the LAB color space as an intermediate conversion space. The advantages are: you can preserve black (100K stays 100K on the printer as well as gray), gradients might look smoother.

You need 2 profiles: the output profile and the 'input' side of the device link. In this case you want to use Swopv2. The problem is that if you deselect input profiles in ONYX the output profile is not going to be used. A trick might be to use the same input profile as you have used to create the device link (in this case: Swop v2) and use the Absolute Colorimetric rendering intend. Since both color spaces are the same there should be a conversion without a change.

If the only purpose is to save inks I think there are better ways to achieve that by using the right GCR settings in your output profile. Cleaner colors can be achieved by setting your ink restrictions accurately.

Which printer do you have by the way? (let me guess: a Spuhl Virtu? ;-))

Ciao!
Marco
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Offline virtu Posted 10-24-2009 - 09:49 PM
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Hello Marco,

Yes, i have a Spuhl Virtu RS-36 138 inch UV-Printer. I also work with HP5000, Canon iPF9100 and a Roland RS-640.

You say: The device link profile, if used, should be set as the output profile

So that means i have to go to Media Manager, duplicate the media and remove the ICC of the Media. Then i have to set the Device-Link as the new ICC ?

Then i set Swop_v2 for example as my inputprofile and set rendering intent to absolute colormetric?

virtu.
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Offline Karsten Schwarze Posted 10-25-2009 - 01:53 AM
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Hi all,

my name is karsten schwarze and I am a color and workflow consultant from germany, working with Onyx at different customer sites and we made a training on onyx, workflow and devicelink-profiles the last year.

if you want to use DeviceLink-Profiles in Onyx, you have to define them as the input profile e.g. in the quicksets or in preflight.

Be aware that it is not possible to honor embedded profiles when doing so!

Regards,
Karsten
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Offline virtu Posted 10-28-2009 - 12:22 AM
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Hi,

Well, now i am confused. Marco says to set the devicelink as outputprofile, karsten says to set it as input profile.

Is there no official documentation for that by onyx?

virtu.
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Offline MarcoRoos Posted 10-28-2009 - 02:02 AM
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(10-28-2009 12:22 AM)virtu Wrote:  Hi,

Well, now i am confused. Marco says to set the devicelink as outputprofile, karsten says to set it as input profile.

Is there no official documentation for that by onyx?

virtu.

Hi Virtu,

There is no official documentation on this.

Karsten is right! I was wrong!

The device link should be set as in input profile. ONYX automatically disables the output profile when a device link profile has been selected as the input profile.

Like Karsten said: embedded profiles will no longer be respected which means you have to make sure all files you open in the RIP while using the DeviceLink profile need to be in the input color space. (for example: when you create a DeviceLink out of Swopv2 --> Media Profile all files need to be Swopv2 before you open them in the RIP. Otherwise you get color differences).

Karsten: thanks for the intervention! ;-)

Ciao!
Marco
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Offline virtu Posted 10-28-2009 - 08:36 AM
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Hi,

Meanwhile i found an automator action which converts TIFs to outputprofile using devicelink.
So i could convert to file first and then print it with disabled inputprofile.

Will test both ways. Thanks for help.

virtu
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Offline ttlcntrlprint Posted 04-17-2012 - 12:30 AM
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Hi virtu, this is a rather interesting thread for us as we've just been training and comparing Alwan Color v. Link-o-lator device link creating. Our primary concern being team members who are not colour management aware when saving ink and trying to find the best possible workflow for device link implementation.

Primarily this is to incorporate for the more obvious Litho CMYK to CMYK benefits, but thinking now at ink saving workflow for the inkjet expensives ink sets too! So, very curious to know if the Device Link profiles work for a quick fix with ink limits for you though?

Many thanks,
Christian
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