Zecher – SteppedHex engraving for optimised finishing and spot-varnishing
GERMANY • The manufacturer of premium anilox rollers developed the SteppedHex technology. Based on an application of the parameters of 60° engraving, it offers both an alternative to it and additional benefits. SteppedHex engraving assists the printer’s task with improved emptying of the anilox roller cells to deliver optimised printing results. This is proven by a series of SteppedHex-based projects carried out by Zecher together with its customers.
One such project, starting in early 2016, was a joint endeavour involving printing machine manufacturer Heidelberger, with a mission to provide an end-customer with the best possible solution to print gold lettering. To ensure an ideal outcome, Zecher also carried out test prints, likewise in collaboration with Heidelberger at its Print Media Center (PMC) using a Speedmaster XL 106 double coating machine.
Jörg Rohde, Zecher’s head of application Technology explains: “Our cooperation with Heidelberger included the provision by us of a corresponding technical-application analysis for the downstream varnishing/flexo printing works in relation to the print quality to be achieved.” With the requirements of the end-customer in mind, Jörg Rohde recommended the use of SteppedHex technology: “Up until now the engraving specifications used for printing gold lettering have been relatively coarse. These include conventional, hexagonal 60° engraving and the open line screen. Appose to this, the SteppedHex technology convinces with its special staggered structure and increased screen ruling without loss of volume.”
Initial test-prints carried out at Heidelberger’s PMC demonstrated these benefits in terms of positioning accuracy and positive and negative detail rendering. The use of 240 L/cm SteppedHex engraving amply fulfilled the end-customer’s expectations.