OCP black ink problem

First is with OEM and OCP inks; second is after the switch to Octoink black.

Ferdinand Mesmer said:

First is with OEM and OCP inks; second is after the switch to Octoink black.

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Then I can suggest to take another black ink cart flush it and fill with OCP black, perform ink cleaning cycles and test by printing same image. If the problem goes away then the "Octoink black" does not work with your inkset. You need to consider using all colors from "Octoink" or different inkset altogether.

Smile said:

Wow, I wonder what happened here. So both images you posted are printed with same Octoink black ink which solved the problems with OCP black but first is when printer worked OK, and last print is from today?

If nozzle check is fine, I don't have any suggestions except incompatible inksets, but if it worked before

Are you sure software settings are the same as before, maybe this is software problem?

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And yes I even reinstalled the driver. I am printing from LR and

Smile said:

Then I can suggest to take another black ink cart flush it and fill with OCP black, perform ink cleaning cycles and test by printing same image. If the problem goes away then the "Octoink black" does not work with your inkset. You need to consider using all colors from "Octoink" or different inkset altogether.

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Yes I guess I will have to refill the OCP black. Also, it just occurred to me that this looks like a color is missing in the b/w mix? Is that possible?

And yes I even reinstalled the driver. I am printing from LR and

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If you reinstalled stuff to rule out the software problems, then thats not it.

Yes I guess I will have to refill the OCP black. Also, it just occurred to me that this looks like a color is missing in the b/w mix? Is that possible?

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If nozzle check is fine this is unlikely, but nozzle check does not mean sufficient ink flow is provided by ink cartridge under heavy load (like printing entirely black areas for example). Nozzle test does not show this.

But your carts are new as your printer, not refilled dozen times etc. This is last thing that would happen IMO.

When you print B&W on the Pro 100 it uses 6 colours (Quality = High) when using Glossy paper and 6 colours (Quality = Standard) on plain or Matte paper also..

The Hat said:

When you print B&W on the Pro 100 it uses 6 colours (Quality = High) when using Glossy paper and 6 colours (Quality = Standard) on plain or Matte paper also..

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This is a greyscale test print. Sorry about the quality but I think it clearly shows the green cast.

Either use the Manual Colour Adjustment in the print driver or profile your inks to solve your colour cast problem, simple..
click to enlarge...

The Hat said:

Either use the Manual Colour Adjustment in the print driver or profile your inks to solve your colour cast problem, simple..
View attachment 2216 click to enlarge...

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I did use the manual settings and the green cast was gone but the prints looked the same as described above. Anyway I should not have to make any changes since the profile and paper are the same. This is a manifestation of a deeper problem.

I solved the problem by refilling with OCP black. It turns out that the problem was caused by an incompatibility between OCP and Octoink inks.

Of course the original problem mentioned with OCP black ink has returned. Now we can conclude by stating beyond any doubt that OCP black does not work properly with the Pro-100. I would advise against using OCP inks with this printer. Octoink black looked good but reacted badly in combination with OCP. I just got an email from them saying that they can only guarantee compatibility with OEM Canon inks. Fair enough. I will try their inks next.

Yes mixing third party inks is nor recommended by far, because more serious problems like clogs can happen if inks react together etc.

That said experiments is always fun if it ends without damages.

Smile said:

Yes mixing third party inks is nor recommended by far, because more serious problems like clogs can happen if inks react together etc.

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This doesn't look like any clog I've ever seen.

Ferdinand Mesmer said:

Of course the original problem mentioned with OCP black ink has returned. Now we can conclude by stating beyond any doubt that OCP black does not work properly with the Pro-100.

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The probable cause and two suggested solutions have been posted. Did you try either solution? I also suggest that you just use OEM black. It's expensive if you're doing black and white printing, but it is presumably better than the alternatives.