How to prepare a print ready Roll, Gate or Z-Fold document in InDesign

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Introduction
Time spent on setting up a job will save you time in the long-run and mean the resulting PDF will accurately reflect your requirement.
This guide focuses on the use of Adobe InDesign but a lot of the principals are transferable to other software.
Before you start make sure you have all the key information you need to create the page, particularly trim size, bleed information, print resolution, and colour type (CMYK or Spot colour).
Zones
There are two main zones to bear in mind when creating artwork. The Safe Text Zone (Margins) and the Bleed Zone.
The Safe Text Zone is the amount of distance required from the edge of the page to the text margin. The MINIMUM recommended distance is 5mm. For a PUR bound book the inner margin should be at least 10mm.
The Bleed Zone is the space outside the page. The MINIMUM amount of bleed required is 3mm extended out from the edge of the page. When you want a graphic or photo touching the finished trim edge you must add bleed by extending the image past the trim edge. Guillotines are not always 100% accurate so you need to add ‘bleed to take into account any movement when the product is being cut to its finished size.
Setting up InDesign for Roll, Zed, Gate fold
Launch InDesign and go to FILE>NEW DOCUMENT

1. You will want to set just 2 pages up . An Outer and an Inner. The folds can me marked out using Guides. Make sure facing pages is NOT ticked.

2. Select page size (this will be your final trimmed size) and orientation

3. Margins refers to the ‘Safe Text Zones’. The minimum recommended is 5mm and is usually set at 10 or 12mm for saddle stitch.

4. Set Bleed to 3mm and press OK.

flat new doc

 

A blank document will open and you will see the following lines:

5. The Red Line indicates the reach of your Bleed Area

6. The purple line shows the Safe Text Zone (Margins)

7. The white box with black outline indicates the trimmed page size

lines

Roll FoldRoll FOLD (TRI-FOLD)

The most common roll fold is an A4 Landscape folded to a 6pp Leaflet. The school boy mistake here is making each panel 99mm. This is because if all the panels are equal when folded down you get ‘buckling”. Each roll after the front cover needs to be 1mm smaller that the next to avoid the ‘buckling’. In this instance the front cover will be 100mm the back cover will be 99mm and the next panel will be 98mm.

 

 

Z Fold

Z-Fold (concertina fold when 4+ panels)

A Z-fold is a document folding method that uses two parallel folds to create six panels (three panels on each side of the paper). The two folds are made in opposite directions, which forms a shape that resembles the letter Z. Each panel will be the same size (so if sheet size is A4 each panel would be 99x99x99mm) and doesn’t need reducing like the Roll Fold.

 

Gate FoldGate Fold

A Gate Fold is a document folding method that uses two parallel folds to create six panels – three panels on each side of the paper. The left and right panels are half the width of the centre panels and fold inward to meet in the middle without overlapping.

 

 

 

 

Double Gate FoldDouble gate Fold

A Double Gate Fold adds another fold in the centre of the middle panel of a standard Gate Fold. Because of this you would need to make the panels that fold in first smaller. It is recommended to make them 2mm shorter.

 

 

 

PLEASE NOTE: For heavier paper stocks (above 200gsm) it is recommended to add an additional 1mm reduction in Panel size for the Roll and Double Gate-fold to avoid Buckling.

Swatches

swatchesColour Swatches Please ensure that all colour swatches are CMYK unless you are printing a specific Pantone Colour or using a custom spot colour to highlight personalised areas of text for lasering/inkjetting. You can tell what type of colour swatch you have by the icons after the colour name.

 

swatch keyCMYK (Cyan, Magenta Yellow, and Black) also know as 4 Colour Process

 

 

RGB (Red, Green and Blue). Used for computer VDUs. Requires converting to CMYK.

 

 

Book Colour (Such as Pantone). Industry Standard specialist ink colours.

 

 

Process. The colour has been mixed using the primary colours of either CMYK or RGB.

 

Spot Colour. This indicates that the colour is in its own unique colour channel and not part of the process colour channels.

 

Checking Image Resolution

When you scale an image in InDesign you are affecting its final resolution. If you put in a large 72ppi image and scale its dimensions down, its effective resolution will increase. Likewise if you increase a small image you reduces its effective resolution. You can view an images effective resolution by going to WINDOW>LINKS. Click on the image and in the LINK INFO box is the images information. This shows the ACTUAL PPI and the EFFECTIVE PPI. The recommended EFFECTIVE PPI needs to be 300 PPI or above but as a absolute minimum we recommend no less than 150PPI.

Check image resolution