Printing to the edge of the paper is not something most printers can do. Think of where the excess ink/toner would end up if it missed the edge - this would rapidly degrade any subsequent outputs if it were allowed to happen.

Commercial printers print onto larger pieces of paper (or a massive roll) and then, when the ink is dry, they trim the edges with a guillotine to make it the final page size. If you need to get full bleed output then you will need to do the same or send it to a commercial printer who can do it for you.

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Andrew Lockton
Chrysalis Design, Melbourne Australia