English to French Tech/Engineering Engineering (general) manufacturing of a security document

contexte

"For example, a maximum lens-to-print skew can be determined by added the roll-to-roll lens embossing skew, sheeting skew, in-feed skew at a sheet-feed printer and/or printing distortion skew introduced by a security document printer, the maximum allowable size of one or more dimensions of the array of image elements then being derived from that total skew."

"Lens-to-print skew in the final security document is the result of skewing that is applied at various stages of the manufacturing process. The apparatus shown in Figure 4 introduces a roll-to-roll lens embossing skew, namely an amount of skew introduced into the lens elements during the roll-to-roll process for embossing the lens elements. This is typically the smallest contributor to the final lens-to-print skew. The lens elements are applied to the security substrate with a small amount of skew relative to sheeting reference marks. The reference marks are subsequently used to "sheet" the roll or in other words to cut the roll into sheets for subsequent processing."