Adding spot colour to colour calibration

[wonderings]

We are having trouble with a colour not coming out properly on our Epson 10600 Ultra Chrome. It is one pms colour (300c). It comes out way to dark. We are using O.R.I.S Colour Tuner 5.0.6. How do I add a spot colour to the calibration that is already in place? Simplet terms would be greatly appreciated. The guy I normally deal with is away on vacations.

thanks

[clod]

I've not used Oris, but I understand it is very similar to GMG in the way it operates. You likely have a Spot Colot database that performs calculation independent of the CMYK profiling part of the system. It should have a entry for Pantone 300 C that has target color values in Lab, measure values in Lab and perhaps shows the rulsting CMYK values the printer will receive. To dial in color, your would measure your sample with a spectrophotometer and enter the Lab values into the database, where the software would recalculate the ideal values to send to the printer. Its an iterative cycle, so you might have to print, measure and repeat a few times to dial it down to an acceptable color match.

Of course, some pantone colors are simply out of the gamut of the printer and can only be adjusted so far.

[David]

Originally Posted by wonderings

We are having trouble with a colour not coming out properly on our Epson 10600 Ultra Chrome. It is one pms colour (300c). It comes out way to dark. We are using O.R.I.S Colour Tuner 5.0.6. How do I add a spot colour to the calibration that is already in place?

We use Oris Tuner 5.1
Launch Color Tuner, and in the Color menu, drag down to Spot color Corrections.
It will open a window, select the color you want to edit, and click "change".
On the right side of this window is the CMYK values for that color, change those to what you need and click Save.

you should be good to go.

hope this helps,
David