I have a new cannon Pixma model TS6420a. My cannon icon says it is on line. When I try to print it says air printer TS6420a . It will not print from my IPhone 13
[Re-Titled by Moderator]
iPhone 13, iOS 17
The Canon TS6420a is listed as a supported model in About AirPrint - Apple Support.
You should not need any extra apps.
See also Use AirPrint to print from your iPhone or iPad - Apple Support.
For troubleshooting, the following user tip by Lawrence Finch could perhaps be of help:
My iPhone 13 cannot find my Canon TS6240A printer
