Why is my printer not printing borderless documents?

Check your printer settings, and make sure the printer is set up to print documents without borders.
Verify that the correct type and size of paper is loaded into the printer.
Check the paper alignment within the printer to make sure the edges of the paper are properly aligned with the printable area of the printer's tray.
Ensure that your document does not contain any elements inside the pre-defined margin limits.
Check for any clogged nozzles on the printer, as this can prevent a full page from printing.
Inspect for any software or hardware issues that might be preventing your printer from properly printing documents.