Hi Maddie,
Please make sure that the PGBK ink tank contains ink. If not, please replace it.
Next, please perform a few printhead cleanings:
https://ij.manual.canon/ij/webmanual/Manual/All/TS5000%20series/EN/UG/bg-maintenance1400.html
If your PIXMA TS5020 still does not print black, it would require service. If you purchased your PIXMA TS5020 less than a year ago, please contact one of Canon's Technical Support Representatives via phone or chat. To contact a Technical Support Representative, please use the link below:
https://mycanon.usa.canon.com
If your PIXMA TS5020 was purchased greater than a year ago, it 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.
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 11 AM ET (8 AM PT). Let them know you have been working with technical support and the Canon Upgrade Program was offered.
