Interempresas Media, S.L.U. publishes a selection of magazines, technical details are specified below.
For blood ads (ads up to the edge of the page) it is essential to leave an excess of 3 mm of bleed. In addition, we recommend that ads have a security margin (area where there are no texts or critical images) of 5 mm.
When any image or element on a page touches the edge of the page, extending beyond the trim edge, leaving no margin it is said to bleed. This is done to make sure that small errors when trimming the page do not leave awful white or empty edges.
References:
Just as it is necessary to extend beyond the listings page, it is possible that the page is trimmed outside of the theoretical edge, it is also possible that the cut is made more inwards. The safety margin is the area where there should be no text or any critical image, to avoid the risk of cutting them.
In the next picture shows the bleed using red color, and the safety margin in gray:
(NOTE: the bleed and safety margin dimensions have been exaggerated for easier viewing)
Dimensions according to the following graphic:
Version: 1.3 - 2014 05 01
Most recent version: https://www.interempresas.net/information/advertising/Magazines.asp