Converting Spyderprint 225 patch target to i1Profiler

[Ink stained Fingers]

The printer just takes RGB data, not gray or ligh cyan or....the split of the RGB data into the additional ink colors gray - violett, light cyan,...... happens internally in the driver, and the user does not have any control over it. Gray is a color like any other for the printer. You would need to go for a RIP which would let you use more ink colors in the profile generation process, I think i1Profiler would support that. The user cannot even control the amount of black, you would need software like a RIP which bypasses the driver internal color translations, Printfab would let you do that with black - UCR - Undercolor removal.

I did another test with the 720 or 702 patchsheets as reported above - running the test on the Netbit paper - on a Epson T3100X 24 inch printer which runs with 4 colors CMYK and with pigment inks .

I'm getting a total average of DeltaE's of just 1,33 over the 720 patches, and the value for the largest outlier is just 4.16. None of the gray patches are in the upper 10% of delta values. This means that both profiles are practically identical.

 

[crenedecotret]

@crenedecotret : I have made an i1Profiler target that is based on the high quality target + grays of Spyderprint, that originally was based on RGB: 5x5x5, but I have changed it to a better RGB: 7x7x7 and including an bunch of near neutral patches (automatically generated by the i1Profiler target) and combining it with the extra patches from the Spyderprint 225 high quality target (minus the RGB 5x5x5 patches) + the neutralising gray patches + 2 extra patches (orange and violet) to fill up the target to 702 patches witch is divided into 26 rows, each including 27 patches (26x27=702). You might to try to convert it to the ArgyllCMS format with this: much appreciated.

My apologies for the late reply. I was out for a vacation and it got a little hectic at work when I got back

Here is the ArgyllCMS version of the chart. Letter sized. It's "as is". I didn't add any additional patches to this one so it will not completely fill the 2nd page.