Double-page ad in perfect binded magazine

About the double-page ads in perfect binded magazines.

When magazines are finished with equipment of perfect binding then due to the technology the unwanted disappearing of image happens. The double-page (or reader’s spread) image (or advertisement) will loose approx 7 mm in the inside edge of page - so total of 14 mm in the center of design will be invisible. Therefore the designer should avoid the important design objects in this area.

Also, if possible, then the recommendation is re-position of the text segments (and/or re-sizing of character and word spacing if needed), so that only spaces between words will be at invisible area.

About the covers of perfect binded magazines

The perfect binded magazines are made with a technique called hinge binding covers. This requires 7 mm side glue on the front and back covers and is used to hold the magazine together more securely. When designing double-page advertisement between an inside cover and it’s facing page (also known as «crossover»), each page should be moved toward the face trim by 7 mm. Also this process will affect facing pages of magazines with more than 80-100 pages (depending on paper grade). Any elements that are 7 mm or less from the binding edge and are intended to bleed will be lost in the cutter of publication.

About the double-page ad which follows from cover to content

Since printing technologies for cover and content pages are different – sheetfed for cover and heat-set for content pages - there will be little differences in printing result. The best way for getting equal result is to add additional 2-page insert before content pages section. This is printed also with sheetfed press and thus quality will equal. If this is not possible, then both halves of double-page ad will be printed with manual ink adjustments for getting the more-or-less matching (but not 100% equal) color result.

12. 05.2009 - Kroonpress, Elari Kingo

Older guide:

Making the cross-over image for the spread-pages

You have 2 usual pages (225x290 mm + 5 mm bleed at every side). In layout program (InDesign, Quark etc) you have these left and right page exactly side by side (so-called double-page). And usually image which run from one page to another is put there as one piece (or one image file) to both of pages. But in the case of perfect binding, the gutter of the publication will contain 7 mm ‘blind area’. This should be taken into account during design (inside margins) and especially when creating images and design elements, which should run from one page to another.

The simplest solution would be to make sure that the transition area contains only such objects on which cutting a few millimeters would not disturb the image: for example, grass or forest would not be a problem, while human face or slanted lines would be.

The second solution, which is also often used, would be to create for the image an overlap in the required amount, i.e., about 7 mm of the image on the left page will be repeated on the right page. This means that image could not be now as one piece (as one imagefile) but is divided into two parts - two different «picture boxes» are used. First «picture box» (on left-side page) has image which starts as usual. But the second picturebox on right-side page has the same image from the same file but it starts with +7 mm-shifting where the left-side image ends.

Classical cross-over from designer’s point of view is made as follows. Place your image as one piece onto the double-page. Then make a copy of this image (i.e. copy of picturebox) to the exactly the same position and move left-side pointer of picturebox to the exact center of the double-page. Also move right-side pointer of picturebox to the right +7 mm (so you make this picturebox large by 7 mm). Then shift the image inside this picturebox by +7mm to the right. So you have image where 7 mm of the image on the left page will be repeated on the right page.

An alternative is to shift both images away from center of double-page (image part between the red and green boxes of left page and between the green and red boxes on right page).

16. 03.2005 - Kroonpress, Elari Kingo

More info about Hinge Binding technology

How to split readers spread (AGFA Guide)