Head Alignment for Canon Pixma iP7250?

[kr236rk]

Hi,

Can anyone help please? Canon UK have thus far been unable to help.

How do you manually re-set the print head alignment? You can see below sequences of blue and black bars where many are missing at column B. This is an alignment printout which means its not the inks or inkjets which are at fault here.

Please advise.

Thanks 😉

 

[iam2thecrowe]

print a nozzle check to see what is happening with the nozzles. It looks like you have nozzles failing/dropping out.
My next question would be are you using canon ink? or a generic brand? generic brands clog the heads more.
If you find the heads are actually out of alignment (ie your getting vertical banding similar to in that alignment print), if its a model with a removable print head, you can remove it, power cycle, then it will ask you to insert head. Then you can insert it and it will treat it like a new head. This will trigger the printer to use a fair amount of ink to prime the head however. I dont think thats the problem though, if its not laying ink on the paper, then its a blocked nozzle/nozzle array.

 

[kr236rk]

Many thanks. Yes I see your point - nothing is out of line is it, otherwise printed text would be haphazard, and it isn't. The ink simply isn't hitting the page. I sent Canon UK that printout and they just sent me the head realignment instructions that I have already been following - apparently to nowhere. Does this mean that Canon UK cannot interpret a diagnostic printout from their own product?

Ran many nozzle checks / cleans - the initial ones suggested the blue jet was clogged, then it cleared, but the printing stayed pink biased and the alignment printouts keep on missing out those bars of blue at column B. It does indeed sound like a blocked ink jet then.

Will update.

 

[makkem]

HI
It could be that you need to manually clean the print head.
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[iam2thecrowe]

it does sound like a blocked/failed nozzle array. Try run more head cleaning (head cleaning A does nothing, it just runs a wiper over the head. Head cleaning B purges some ink through and flushes the gunk out) some times it may not be called A and B but run the more thorough one. If the nozzles dont come back after a 3 cleans, leave the machine overnight, that simple process can recover nozzles. Generally if its a full line or array of nozzles thats missing in the nozzle check, in a definitive pattern, it is an electronic fault in the head and not a blockage.