What is bleed in print?



What is bleed?

Bleeds let you to run artwork to the edge of a page. On a press, the artwork is printed on a large sheet of paper and then trimmed down to size. A bleed of 3mm (in UK) is commonly used. This 3mm accounts for each of the four sides of the page, therefore you should add 6mm to the width and height of the document.

What does that mean?

A page bleed is a method used to compensate for, or get rid of, mechanical problems when your project is being trimmed after printing. If the graphical elements such as pictures, or background colour is not carried beyond the edge of the page, there is the possibility that a small area of blank page will be seen at the edge after the page is trimmed.

When page components, such as pictures, graphics or background, touch the document-page edge, they will need to be extended beyond the page. The amount to extend is called a page bleed. Typically a bleed will extend 3mm beyond the edge of the page.

Why is it necessary?

Small mechanical variations can end up leaving a hairline white edge where there should be no white edge at all, if the image is not extended beyond the final trim size. Extending images 3mm beyond the final trim size guarantees that images truly will go all the way to the edge of the printed paper.

How do I add bleed to my design?

Adobe Photoshop:

Open Photoshop and click File > New…
Enter the FULL BLEED dimensions. That is, 3mm extra both vertically and horizontally on each size.
Set the Resolution at 300 pixels/inch
Set the Colour Mode to CMYK

Adobe Illustrator:

Open Illustrator and click File > New…
Enter the TRIM dimensions in the Width and Height boxes
(for example, the trim dimension on a standard business card would be 85mm x 55mm)
Enter 3mm for the top, bottom, left and right bleed
Set the the Colour Mode to CMYK
Set the Raster Effects at High (300ppi)

Adobe InDesign:

Open InDesign and click File > New > Document…
Enter the TRIM dimensions under Page Size
(for example, the trim dimension on a standard business card would be 85mm x 55mm)
If you do not see “Bleed and Slug” at the bottom of the window, click the “More Options” button.
Enter 3mm for the top, bottom, left and right bleed

Please inquire at G10 Design and Print LTD for any queries.