[Tool] ChromIQ – a macOS and Windows GUI for ArgyllCMS printer profiling (v3.9.0)

[pharmacist]

@itsab1989 Almost right only the right side is to wide: the scanning eye stops on a coloured patch and not on paper white:

The upper margin is perfect: spectro does not touch/scratch the black rubber clamp:

Maybe you should diminish the space bar width (maybe -a0.70).

 

[pharmacist]

Here a comparison of my specially adapted target (720 patches) with your automatic generated ChromIQ 720 target:

I have folded the paper so you can see the row width difference:

So the whole patch width should shrink with about 1.5 patch width to clear the area on the the upper side.

 

[itsab1989]

I was just playing around with some values. Fixed the bug with the spacer gap.

https://github.com/itsab1989/ChromIQ/releases/tag/v3.13.0-beta.9

Maybe you find the correct settings. Or maybe a missing control even

I chose A4 portrait, top and bottom margin 10mm, right margin 4. Strip length I set to I believe 280mm but it is limited by the white area anyway.
The patches were 7,5 x 7,3 in my chart. So maybe 7,3 x 7,3 will do? And I set spacer scale to 0,8.

 

[pharmacist]

width: 7.3, height: 7.5 is ok. The trick is to decrease space bar width maybe even -a0.5

 

[Alan G]

@pharmacist - yes, that is the scanning table that I have. Let me know which patch set I should try so that I can compare with a profile from my normal workflow. this does not involve a precondition profile, correct? I'm just curious what the advantage over the other workflow.

 

[pharmacist]

Try this:

It needs 3 sheets of Letter. It is a second best option than preconditioning + final profile as it uses number crushing sampling around the visually most important neutral axis. Let me know what you think about the results.

 

[hackensacker]

I'm always looking to improve B&W printing on my ET-8550, and tried the 1944-patch chart with Canon Fine Art Smooth. This is a warm-tone, OBA-free paper that tends to have a magenta cast with the Epson inks, even after profiling.

The ChromIQ profile analysis was good, highest Delta E 1.27, average 0.25, but a test print had a heavy magenta-brownish push. I did a nozzle check and it was clear. Don't know what happened.

I also made a 1100-patch chart using a Print Prism profile as the refinement source, and that looks pretty neutral.

 

[pkk]

Hi All,
I'm still having trouble getting good results. So I have my path set right? Attachments are screen shots of my preferences page.