Information carriers, method of forming and copying said carriers

Abstract From the Canadian patent

An original information carrier is disclosed which comprises a recording layer applied to a carrier material. The recording layer contains information in the form of a relief image which is made of relief partimages which border on one another without overlapping. The recording layer further comprises a relief grating of different grating depths superimposed over the areas of said roller part-images. A process for producing an information carrier is disclosed which comprises exposing a recording layer through separate color separation originals, exposing the layer to a grating pattern, and developing the exposed recording layer. A process for forming a matrix containing the information …