iP8720 PGBK prints double or heavy-other colors fine

[Dulcich]

I have aligned heads, cleaned and deep cleaned heads, and cleaned the encoder strip all several times over. Have also changed cartridges. All other colors print as normal.

[Patrick]

Hi Dulcich,

Because cleaning the encoder did not clear up the double printing you are experiencing, your PIXMA iP8720 would require service.  If your PIXMA iP8720 was purchased less than a year ago, please contact one of Canon's Technical Support Representatives via phone or chat to obtain your in warranty options. To contact a Technical Support Representative, please use the link below to log into your My Canon account:

https://mycanon.usa.canon.com

Once logged in, click on your PIXMA iP8720 and then click on the Product Support button.  When that page loads, click on either the Phone Support button or the Chat Support button to access support.

If your PIXMA iP8720 is out of warranty, you are eligible for Canon's Upgrade Program. This is for out of warranty units which have been diagnosed to require service, or for some reason are incompatible with a new or upgraded system. This option allows you a one-time opportunity to purchase a replacement product, discounted from the list price.

If you would like to take part in this option, please call our Sales Department at (866) 443-8002 Monday through Saturday, 9am to 9pm. Let them know you have been working with technical support and the Canon Upgrade Program was offered.

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[Dulcich]

Waited 3 weeks for a response. After reading all the other Canon owners with the same issue, and the many other issues I purchased what I hope will be a more reliable Epson.