Hi JohnRupp,
The ChromeOS does not have native printing support for the PIXMA MG3120. Please view the following article for further information:
https://support.usa.canon.com/kb/index?page=content&id=ART178764
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.
To help you get up and running quickly, we also offer free standard shipping (if the order is completed by 12:30PM ET). If you would like to take part in this option, please call our Sales Department at (866) 443-8002. They're available weekdays and Saturdays after 9 AM ET (6 AM PT). Let them know you have been working with technical support and the Canon Upgrade Program was offered.
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