Method and apparatus for producing a security feature on a printing form, imaging device for producing a security feature, machine for processing material, security feature, printing form and printed product

摘要

A method for producing a security feature on a printing form includes providing an imaging device, particularly a laser device, having a feed, and varying the feed of the imaging device to produce the security feature on the printing form. The variation of the feed can be carried out periodically or randomly, for example, and produces a light-dark pattern as a visual impression. The security feature can only be reproduced with knowledge of the feed variation. An apparatus for carrying out the method, an imaging device, a printing machine including the apparatus, and a printing form and printed product produced thereby are also provided.