Pro-100 Cyan problems

[mikling]

Well you know I had been building electronic circuits and diagnosing for 40+years and that failed capacitor was NEVER in my radar all day because "they never fail" in my experience prior to this and I completely overlooked it and I mean overlooked it even when I was analyzing the circuit and results. That was a FIRST time and the next time I won't overlook that aspect.

We know these are not really commercial machines but you might have hit some kind of image that requires so much Cyan. Also, did you try slowing the print speed down at all? Or even trying it on High Quality mode. Might take longer but it might solve your problem.
When we use things outside their stated design objectives, we might have to revise how we are able to make it stable a bit. It's like overclocking your PC. Sometimes to make it go faster we might have to make some other adjustment to accommodate the desired result which in your case is to prevent the cyan nozzles from kogating.

You will need to perform tests with various machines to benchmark the situation. Done properly this will entail a lot of variable fixing and a ton not just lot but a ton of effort. Not likely permissible in a production situation unfortunately.

 

[Grazer5]

We print 90% of our jobs in HQ because the image requires it. We're dealing with corporate logos, which you can't be trying to reduce the amount of coverage. Mr. Hat, we change out with a third left in the reservoir always. Mike taught me that a long time ago.
Unfortunately I can't run in quiet mode either as the machines are too slow as it is. Oh, and we run 15 at a time to spread out the load.

 

[jgperry]

Yes, found your ref and others which make interesting reading. Perhaps the origin flows from KO = Knock out.

https://glosbe.com/en/en/kogation

"Gradual and inevitable degradation of the print head of a heat-based inkjet printer from residual ink and/or impure water"

This was a new word for me. Thanks.

 

[jgperry]

Sounds like you need to go back to the very start again, because what your doing is all wrong, to get any long-term life out of a Canon print head you need keep it supplied with a good flow of ink always and obviously these compatibles are just not doing the job for you.

Use only new OEM carts/ ink or refill OEM carts with good ink, that’s the only solution, it slow but sure.

I have in the past done 50.000 sheets runs, but I spread the load over 4 or 5 machines which were both A4 and A3 inkjets, I had ink carts all over the place at the time, and finished with no issues, but ink stained fingers...

Does anyone have any data on the possibility of flow degradation when constantly refilling OEM carts overtime.
Edit:

 

[PalaDolphin]

Listing...

 

[FussyBob]

We print 90% of our jobs in HQ because the image requires it. We're dealing with corporate logos, which you can't be trying to reduce the amount of coverage. Mr. Hat, we change out with a third left in the reservoir always. Mike taught me that a long time ago.
Unfortunately I can't run in quiet mode either as the machines are too slow as it is. Oh, and we run 15 at a time to spread out the load.

So your are saying that your run "15", PRO-100 printers and all "15" exhibit the cyan clogging. You also state you are running 3rd party inks (no name provided).
OEM ink works fine. Doesn't that point to your no name 3rd party cyan ink as the culprit. Change to a different 3rd party cyan and see if the issue goes away. Or refill OEM carts with Precision Inks, etc., cyan and see if there are improvements.

 

[The Hat]

Does anyone have any data on the possibility of flow degradation when constantly refilling OEM carts overtime.

I am not aware of any issues regarding flow problems using an OEM cart, I’m still using BCl-6 carts for over ten years, BUT there is one Caveat however regarding flow degradation.

The OEM cart was never meant to be refilled (Even once) but we have found if you refill when the reservoir has just become empty at the (Low ink warning), and don’t wait till later, the cartridge can be refilled repeatedly giving exactly the same flow rate of a brand new one.

If there is ever the slightest sign that the ink flow is inhibited, then a complete purge of the cart will bring it back to its original state once more... (Might be needed occasionally)

Does this answer your question...?

 

[jgperry]

Yes this answers my question very well and also my next one which I had not asked yet. That is what can we do from a preventative maintenance point of you. Well to quote you “ a complete purge of the cart” ... might be needed occasionally. Thanks for your help

 

[The Hat]

@jgperry, If you refill just before or just as the reservoir empties, then you may never need to purge your cartridge, they may work indefinitely...