Minolta RIP can't load Lab PCS profiles???

[smilem]

Hello, I created a profile for Minolta 1060C using standard LOGO engine.
The profile has standard Lab PCS. When trying to load the profile into Minolta RIP, the error is given that
the "wrong file type"

The Minolta software Color Centro created profile with XYZ PCS not Lab, what's up with that?
However standard ISOCoated v2 profile can be loaded, therefore I don't understand why my profile can't

Maybe somebody have any ideas?

[smilem]

Any way to convert Lab PCS to XYZ ?

[Czornyj]

There's no way to create LUT XYZ profile, XYZ is not perceptually uniform so it doesn't make any sense.

Make sure you didn't create v4 compliant profile, many RIPs only recognise v2 profiles.

[smilem]

There's no way to create LUT XYZ profile, XYZ is not perceptually uniform so it doesn't make any sense.

Make sure you didn't create v4 compliant profile, many RIPs only recognise v2 profiles.

Have seen the attached screenshot? It clearly shows that PCS is XYZ.
I have made profile v2.4.0 and tried v4, neither works. Tried few color profile making engines, neither works.

[Czornyj]

Weird... Try using colprof from ArgyllCMS to create the profile - it can create XYZ cLUT type profile.

The -a parameter allows choosing an alternate profile type.
http://argyllcms.com/doc/colprof.html#a

By default (equivalent to -al) profile creates a cLUT based table profile with a PCS (Profile Connection Space) of L*a*b*, which generally gives the most robust and accurate results, and allows for the four different rendering intents that ICC profiles can support.

A cLUT base table profile using a PCS of XYZ can be created if -ax is used, and this may have the advantage of better accuracy for additive type devices (displays, scanners, cameras etc.), may avoid clipping for displays with a colorant chromaticity that can't be encoded in L*a*b* PCS space, and may give a more accurate white point for input devices by avoiding clipping of values above the white point that can occur in L*a*b* based cLUT input profiles. A disadvantage of this type of profile is that it can be a lot less robust if given a test patch set that is sparse, or too evenly spaced. By default cLUT XYZ PCS Display profiles will also have a set of dummy matrix tags included in them, for better compatibility with other systems. The dummy matrix deliberately interchanges Red, Green and Blue channels, so that it is obvious if the cLUT tables are not being used. If it is important for both the cLUT and matrix be accurate, use -aX, which will create shaper/matrix tags.

[GWGill]

There's no way to create LUT XYZ profile, XYZ is not perceptually uniform so it doesn't make any sense.

It's perfectly fine to create cLUT profiles with an XYZ PCS, and for some types of devices (i.e. displays), it's often better to do so because the XYZ is additive, just like the device behaviour. Yes, the non-perceptual uniformity has to be dealt with, but that can easily be done in the profile construction by using a linear light to perceptual curve before the B2A, and it's inverse after the A2B table.

[smilem]

I want to convert the created profile not create with Argyll.
If there is no easy converter, then Minolta has a problem, as this behavior means dump the printer (new by the way), or use their crap software to create the profiles?

No thank you, standard profiles are the ones that work say in Photoshop.

[smilem]

Don Hutcheson said Minolta is best printers in the world?
http://www.youtube.com/watch?v=zAcCGKXMTZM&feature=youtu.be

Really, well I see only option to use external color server, or just use the profile with Acrobat, Indesign, Photoshop etc. manually converting the data and usin "colormanagement off" in the Minolta RIP. Thank you Minolta for crappy RIP, and for crappy support based by regions, when even with printer serial number other regions refuse to help, and local support is well incompetent.

[Czornyj]

There are external Fiery and Creo and internal Fiery print controller options for C1060. Did you check in the manual if in-house print controller accepts any ICC output profiles created with other profilers? Maybe it has some limitations in this regard (it's not unusual)?

[smilem]

The RIP is Minolta integrated one not Creo, and not Fiery.
Printer is controlled by java app color centro, it does not allow to import ICC/ICM profiles made by third party software.