Setting print size preset in AppleScript
If I say anything that you already know I apologize.

It all starts with your printer capability.

Does the Canon supports that size?

Open a app like TextEdit and use the "Page Setup".

Now select your printer and select the print size if available. If not available use the Manage Custom Size and add new size (+) and the dimensions.

Example:



Set it up:



Now go to Print (in TextEdit) and select the Printer &amp; Scanner preferences and select default size.



size