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Hi all, Another update to this thread, with some very good news! I mentioned last time that after diluting the OCP black ink fairly significantly, it was working great. Well, after some more printing I found that that wasn't true. It was still having the skipping issue occasionally (though to...

I'd definitely be interested if you do. It's not too terribly difficult using the methods Grandad35 described. The biggest thing I noticed that made results inconsistent was if the blunt needle used for the surface tension test was not held perfectly vertical. If you can, rigging up something to...

Warning, nerd content below. I went ahead today and measured the viscosity and surface tension of the black ink using the approximate method suggested by PeterBJ and authored by Grandad35. The results were pretty interesting, showing as always why it's better to have measured values rather than...

I'm not sure what you mean. As far as I know, this OCP ink (BK797) is a dye ink--not pigment. Is that not correct?

When I get some more free time I will try this and report back. I'm an engineer so this is the sort of thing I do for fun anyway :cool: I wish I still had some of the OEM Canon black to measure as well, for a good baseline, but I flushed it all out when I tried using its tank as a potential...

>>I wonder if the problem is common for OCP dye black and green ink for CLI-8 cartridges, or if you got bad batches or old ink?<< I was wondering the same. The black and green inks, when compared to the other colors, are noticeably more viscous (the black especially). However, I bought the first...

Here's the update... I think I've solved the issue :) I did get the Formaflo, and first tested a couple drops per ounce with the black ink. The Formaflo is not viscous at all (it's about the consistency of water), but it definitely had a huge and obvious effect on the surface tension of the...

Thanks everyone for your replies! To add a bit more info to the original post, I'm using Canon ink tanks, and this issue definitely becomes worse on higher print quality settings, and with media types that use more ink. The examples I posted above were using high print quality with Photo Paper...

***EDIT 7/6/2014: Please see my follow-up post at the end of this thread. R-JetTek and OCP listened to me and fixed this issue completely!*** Hi all, I'm new here, and I'm about at my wits' end with my Pixma Pro 9000 MkII and OCP inks. I've been using OCP ink in this printer since 2011, and...