Cautions when designing loose sheets
When printing loose sheeets, it is necessary to consider if we are going to punch file holes.
If so, the main precaution to be taken when designing is the safety margin on the file holes side. This margin should be 15 mm, and it is advisable not to place there useful information such as texts or logos, since it could be punched. In the case of sales sheets per model, safety margin varies depending on the side. On the front side, margin must be kept on the left edge while on the back side, it must be kept on the right edge.
A bleeding area of 3 mm must be defined in the layout document, and all the elements that have to bleed off should extend 3 mm. out of the page edges. When designing loose sheets, it is essential not to place elements too close to the page edges as long as these elements do not bleed, as they could be trimmed. It is advisable to keep a safety margin of 3 to 5 mm. around the page border where no useful content should be placed, especially page numbers.
Sales sheets per model may become a true catalogue (the only difference is there's no binding). They deserve a quality comparable to that of the best catalogues. Image resolution (photographs and logos) must be high enough for quality reproduction, away from the unwanted pixelization effect.