My Projects have this white "border" how do I remove it?

[JohnnyCarnage]

I use photoshop for company flyers and website work and I've noticed my latest flyer has a "border" around the image.
That is my image stops and the paper begins. its only a few centimetes wide but it shouldn't be there in my opinion.
I've deliberatly made the image larger than the canvas and that "border" is still there. It's nothing I created as far as I know...
It doesn't show on the screen however when I print, it's absolutely noticable.
Any ideas on how to get rid of it?

 

[jimoblak]

It it likely a problem with your printer or its driver.

No printer should be printing to the edge of a page. It needs the white space to grab and pull the paper.

Research what a 'bleed' is in printing. You need to print to a larger sheet and then trim down to your expected size if you want a bleed.