12-04-2016 01:48 PM
I just happened upon this forum. I too was disappointed about Canon's Pro100 borderless limitation. Here's how I get my 7 X 10 greeting cards to print borderless: I set the paper in print settings at 8 X 10, and guides on printer at 8 X 10. I put my 7 X 10 greeting card paper in the middle of the printer guides, and I get bordeless printing. Hope that works for you.
12-04-2016 01:57 PM
If you disable the detect page width option could you close the guides o the 7 inch width?