Hi imoldude,
When double printing occurs, it is caused by the timing strip/encoder having a smudge or is dirty. To clean this, please follow the steps in this article:
https://support.usa.canon.com/infocenter/index?page=content&id=ART164472
After cleaning it once or twice, please attempt to print.
If the issue persists, your PIXMA MG3620 would require service. If your PIXMA MG3620 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:
https://mycanon.usa.canon.com
If your PIXMA MG3620 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.
