Pro9000mkII Nozzle check - Is this terminal?

[3dogs]

Please don't get me wrong when I say that I am actually pleased to hear that it seems to be associated with Magenta. Although I seriously do not believe that it is attributed to the actual inks.
Everyone that is experiencing an incurable magenta head clog ( including three heads for me ) has to realize that we are all using Magentas from different source. SO either there is a really evil anti magenta demon covertly attacking out PRO 9000 MKII heads, or...... there is something going drastically wrong with out PRO 9000 MKII! Mikling suggested various theories as to what might be occurring.

But I am seriously leaning toward the printer acting up. I have tossed mine out and still have a new one but no head as I used that extra print head on my older machine which lasted about 1 month, a third head also died within a few weeks.

I might sell the headless new one for very cheap.
Joe

I am thinking that the magentas are all loaded with pigment, mike talks about cooking the ink/pigmennt and causing it to bake hard, then resisting rehydration.
Is it plausible for Canon to have heat resistant properties that are not shared by 3rd party inks yet?

It would be a minor tweek for an OEM to just lift the temp at the head by a fraction, causing a) significant erosion at the nozzle, baking in the port feeding the nozzle and b) premature wear.

Somewhere I read a thesis done on the canon print head and one of the observations was that once started degrneration and build up of pigment particles followed rapidly.........??????

 

[paulcroft]

Well, I can't accept the faulty ink theory because the first head lasted for three years, my ink supplier has never changed, and others with the same problem are using different inks. I also tend to think the cartridge is not the problem because of the longevity of the first head. This means it's either a failure in design or manufacture of the replacement heads or some alteration/variation/deterioration in the printer itself which manifests itself over time. I am not clever enough to know which but, instinctively, I find the latter harder to comprehend so I opt for the former.

 

[3dogs]

Well, I can't accept the faulty ink theory because the first head lasted for three years, my ink supplier has never changed, and others with the same problem are using different inks. I also tend to think the cartridge is not the problem because of the longevity of the first head. This means it's either a failure in design or manufacture of the replacement heads or some alteration/variation/deterioration in the printer itself which manifests itself over time. I am not clever enough to know which but, instinctively, I find the latter harder to comprehend so I opt for the former.

Well something Canon has done has changed things a tad. May be my short term memory is going (more) but three years ago this was not such an issue..........or was it?

 

[The Hat]

I too had magenta problems over the years and my latest head (less than 1 year old) to go was only a 5 cart one but I had Prodinks in it at the time and not I.S. inks.

I have an i9950 (8 cart) Head number **QY6-0055 running on I.S. inks exclusively for over two years now and not even one single clog in all of that time, so I’m watching it very carefully.

I have also had a 10 cart head go (pigment green) after very little use, so is it the inks ! Or is it a design fault, well my money went on the design fault (Each time)…

**Same head as the 9000

 

[paulcroft]

Back in 2010, when I bought my Pro 9000, the original head would probably have been the QY6-0055 but I know for a fact that the last two heads were both the 0076 replacements so I'm now wondering, somewhat belatedly, if that's the problem? While the 0076 is listed as a direct replacement for the 0055 there must be a difference, or it wouldn't have a different model number, so maybe this difference is what's leading to the magenta failure we're seeing.

 

[andy_48]

For what it's worth, I'm UK based and I bought my last two heads from CRC. When this second failure occurred, they told me that, had the head been less than three months old, they'd have replaced it FoC. Have you thought of contacting your supplier?

Likewise, I'm UK based and get my heads from CRC Tasktron. Adam at CRC has been very helpful and has tested and replaced my print head. Excellent service.

Oddly, he sent the following message: "To be honest the photo magenta nozzle was fine it was the black that wasn't quite right so I've sent you a replacement". Not what I expected to hear but I'm not complaining!

 

[paulcroft]

Adam at CRC has been very helpful and has tested and replaced my print head. Excellent service.

That's encouraging. It will be a source of great interest to me to see how long this one lasts and I genuinely hope it's longer than a few months.

 

[The Hat]

The only words of encouragement I can give to all users is to print as regular as possible even if it’s only a nozzle print, I reckon the more time a head is left idle the better chance it has of malfunctioning. Ink is cheap (Even OEM) heads are not ! As if you did know that already..

 

[andy_48]

print as regular as possible even if it’s only a nozzle print

Do you know a way to do this automatically?

 

[The Hat]

Do you know a way to do this automatically?

There is a way to print a nozzle check automatically without having to have your printer turned on all of the time.

There are quite a few guys here on Nifty that have a neater way of doing just that than me so I’ll have to decline on the very long way that I’d do it.

But there will be an easy answer coming soon..