Whether your magazine or brochure is printed web or sheet-fed, when it comes to folding the printed paper (and this can be in-line or off-line) the process of folding is rarely 100% accurate throughout the whole print run.
No matter how good the machinery there are tolerances, and in addition to this the paper itself can be unstable and this can lead to fold variation as the paper passes through.
Where there are pages with no bleed, this can result in white space instead of the pages bleeding off.
Where live matter is close to the trim marks or very edge of the page, it may result in some of this actually being lost.
It can also be apparent where colour bars are used as part of the design at the edge of the pages. Any fold variation will affect these.
Fold variation by its very nature will affect some copies during the run bit not all of them.
The temptation when designing pages can be to get as much on the page as possible, which might mean live matter creeping close to trim edges. To avoid losing live matter due to the effects of fold variance, print should ideally be at least 5mm from the trim edge.
Modern Front-end file transfer systems such as our Kodak Insite, will generally warn users where there are bleeds missing, but won’t reject the file due to this.
Here at Warner’s we have a mobile technical manager, whose service comes as part of the package. He will happily visit your offices and advise the design team on all matters relating to the design of pages, and thus avoiding any potential pitfalls that might arise once on press.
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