What is Bleed?

Bleed is where the printed image on a page extends beyond the edge of the printed area.
During the printing and trimming process, it is common for each sheet of paper to vary or move ever so slightly.
The use of bleed on artwork, ensures that even where this variance occurs it will not be noticeable, as the printed piece will always be trimmed somewhere on the coloured printed image.
Trim marks indicate where the artwork should finish and act as guidelines in the finishing process.
If bleed is absent, it’s possible to find unsightly white lines bordering your printed item where there should be colour extending to the edge.
A lack of an allowance for bleed on supplied artwork is one of the most common problems faced by printers yet it’s one of the most important pieces of information. - always include bleed on your print-ready artwork.