Canon pro 100 - one color keeps getting blocked

[yachtcruising]

I have the PM color not coming through after a couple of prints.  I keep doing a nozzle clean and deep clean - it solves the problem for a couple of prints.  Would you suggest a manual physical clean with either some liquid or a brush?

I have no idea what the safe option for manually cleaning would be, so the less damage as a rookie I can do the better.  Would appreciate some videos I can follow.  

Thanks in advance

[jrhoffman75]

Are you using Canon inks or third-party?

[yachtcruising]

No Canon inks 

[jrhoffman75]

It seems like your problem is more a problem with the print head rather than clogging. Clogging generally occurs when the liquid part of the ink dries out. That doesn't seem likely when you are continuously printing.

There are many YouTube videos on cleaning printheads. I have never had to do it so I don't have specific recommendation, but you can Google Pixma Pro-100 print head cleaning. Generally folks seem to recommend Windex.