
Click it, and then click "Print" to finish printing your document. Newer printers, especially if they're photo-oriented, should have an explicit setting for borderless printing. For some printers, you may need to dig down another level and find an "Advanced Setup" screen to get to those settings. Usually, there will be one called "Layout" or "Page Layout." Once you've clicked "Layout," you should have the option to manually set your margins to zero. Choose "Printing Preferences" from the pop-up menu, then look at the setup options your print driver provides. To fix that, open "Devices and Printers" from your startup menu, then right-click on the icon for your printer.

That's usually because the printer driver itself has default borders set for each document, and until they're changed your document will print with a border or your program will tell you that you're trying to print a document that's too large for the page. Even when your settings are all correct in the document itself, you may still find that your document won't print border-free.
