PIXMA TS9521C How to do borderless printing on custom paper sizes

[Dmooch]

I'm getting beyond frustrated trying to do borderless printing with my new printer. When using the APP, there's an option to select borderless printing but that doesn't help me since It doesn't allow you to customize the paper size. So here I am, trying to print from my computer - It doesn't matter what options or sub menus I select, there are NO options to do borderless printing. Please help!

[Stephen]

If you're using AirPrint, you may not have all of the options available. Make sure you've installed the software and drivers for your printer from our site here: https://canon.us/TS9521Csetup 

[Dmooch]

I am not using AirPrint, at least I don't think I am. It's not an option that I see. I have installed the software and drivers like you said and I still do not see any of those options - specifically borderless printing.