Apparatus for printing and for forming a hologram on sheet material

Apparatus for processing a substrate, comprising:

• means including a source of said substrate for continuously moving said substrate through at least first and second work stations in succession,
• one of said first and second work stations including means for repeatedly forming a plurality of discrete surface relief light diffraction patterns on at least one side of said substrate, said diffraction pattern forming means including:
• a master of said surface relief light diffraction pattern,
• a source of a liquid casting resin,
• means receiving resin from said source for holding resin between the substrate and the master surface relief pattern in a defined area surrounded by substrate without resin applied thereto and for a period of time without relative movement therebetween,
• means including a source of radiation directed at said held resin for curing said resin into a hardened state within said period of time, and
• means for separating the substrate from the master after said period of time, thereby to leave the hardened resin in place on said substrate with the surface relief light diffraction pattern of said master contained therein, and
• another of said first and second work stations including means for printing a given visual pattern with ink on at least regions of said at least one substrate side not occupied by said hardened resin diffraction pattern.