It isn't that the CM cannot read the colors, but more likely that the read in color is too different from what it is expecting or does not fit into the algorithm it is expecting.
What I think I am seeing is what we call ink pooling. This gives a mottled effect. To fix ink pooling, you need to slow the printer down. This is accomplished in the driver under drying time... in the same pane as the ink density adjustment actually, increase dry time between head passes. Yes, Xrite claim that the third party ink is the cause is partially correct as Epson ink rarely has this issue...but it does still at times or else that driver feature would not be there. However, Xrite does not suggest a fix.
These settings are there for paper ink combinations for a reason. Without slowing the printer down to give a perfectly even color, the CM will read the ink pool patches and will get too much variance and will reject the reading as a misread. As you pass the colormunki across, it scans perhaps 100-200 times per second. So if you pass the CM over a color in one second, it takes multiple reading. Each reading or scan is noted. If it notes a read in - color that varies too much, it will reject the reading thinking that there is user error.
Ink pooling is not necessarily "bad" ink but a combination of factors including the paper. Most folks have never played with the ink density and dry time. Here is your chance and BTW, that is one of the more advanced steps to improve ICC profiles.
Also within the software there is some provision for variations of the colors read in. Within Argyll, this is controllable, on CM consumer software it is fixed. The solution is then not really to widen the variation accepted but eliminate the printed variation due to pooling. Slow the printer down or reduce ink density to minimize pooling. Reducing density too much will also bring its own problems if you don't know what is happening. So slow increase dry time. How much? it can vary with the paper batch and humidity, but you'll soon find out by trial and error.
What I think I am seeing is what we call ink pooling. This gives a mottled effect. To fix ink pooling, you need to slow the printer down. This is accomplished in the driver under drying time... in the same pane as the ink density adjustment actually, increase dry time between head passes. Yes, Xrite claim that the third party ink is the cause is partially correct as Epson ink rarely has this issue...but it does still at times or else that driver feature would not be there. However, Xrite does not suggest a fix.
These settings are there for paper ink combinations for a reason. Without slowing the printer down to give a perfectly even color, the CM will read the ink pool patches and will get too much variance and will reject the reading as a misread. As you pass the colormunki across, it scans perhaps 100-200 times per second. So if you pass the CM over a color in one second, it takes multiple reading. Each reading or scan is noted. If it notes a read in - color that varies too much, it will reject the reading thinking that there is user error.
Ink pooling is not necessarily "bad" ink but a combination of factors including the paper. Most folks have never played with the ink density and dry time. Here is your chance and BTW, that is one of the more advanced steps to improve ICC profiles.
Also within the software there is some provision for variations of the colors read in. Within Argyll, this is controllable, on CM consumer software it is fixed. The solution is then not really to widen the variation accepted but eliminate the printed variation due to pooling. Slow the printer down or reduce ink density to minimize pooling. Reducing density too much will also bring its own problems if you don't know what is happening. So slow increase dry time. How much? it can vary with the paper batch and humidity, but you'll soon find out by trial and error.
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to Mike for his excellent after sales CUSTOMER SUPPORT. Good product GREAT support!
I am off to try it.
thanks
