Image Destruct Feature Used With Image Receiving Layers In Secure Documents

Abstract

An image destruct material comprises a release layer positioned between an image receiving layer and a base layer. The adhesion between the release layer and the base layer is greater than adhesion between the release layer and the image receiving layer. The release layer material can be used in secure documents that have an image receiving layer. After information is printed on the image receiving layer, an overlaminate is applied over it. Removal of the overlaminate destroys the printed image on the receiving layer because of the relative adhesive properties of the image receiving layer, overlaminate and release layer.

What is claimed is: 
     
         1 . An identification document comprising:
 a base layer;   a release layer over the base layer, the release layer being applied in a pattern and the pattern covering less than an entire area of the base layer;   an image receiving layer over the base layer and the release layer, wherein the image receiving layer is in direct contact with the base layer except where the image receiving layer contacts the pattern of the release layer; and   an overlaminate layer over the image receiving layer,   wherein the adhesion of the release layer to the base layer is greater than the adhesion of the release layer to the image receiving layer and wherein the adhesion of the overlaminate layer to the image receiving layer is greater than the adhesion of the image receiving layer to the release layer, such that removal of the overlaminate layer causes an image printed on the image receiving layer to remain adhered to the overlaminate layer in the area of the release layer while the image printed on the image receiving layer remains with the base layer outside the area of the release layer.   
     
     
         2 . The identification document of  claim 1 , wherein the image receiving layer comprises a D2T2 image receiving layer. 
     
     
         3 . The identification document of  claim 1 , wherein the release layer comprises a water soluble polymer and a solvent soluble polymer, and wherein the release layer includes a material to mitigate swelling or softening in response to applying the image receiving layer on the release layer. 
     
     
         4 . The identification document of  claim 1 , wherein the release layer comprises a UV curable formulation. 
     
     
         5 . The identification document of  claim 1 , wherein the pattern of the release layer is raised. 
     
     
         6 . The identification document of  claim 5 , wherein the image receiving layer is raised in the area of the pattern of the release layer. 
     
     
         7 . The identification document of  claim 6 , wherein the overlaminate layer is raised in the area of the pattern of the release layer. 
     
     
         8 . The identification document of  claim 1 , wherein an indicia is printed on the base layer. 
     
     
         9 . The identification document of  claim 8 , wherein the printed indicia is at least partially below the pattern of the release layer. 
     
     
         10 . The identification document of  claim 8 , wherein the printed indicia does not overlap with the pattern of the release layer. 
     
     
         11 . The identification document of  claim 1 , wherein the release layer comprises at least a first polymer and a second polymer. 
     
     
         12 . The identification document of  claim 11 , wherein the first polymer of the release layer is selected from the group of polyvinyl alcohol, polysaccharide, cellulose, cellulose acetate butyrate, polyvinyl butyrate, and hydoxypropyl cellulose. 
     
     
         13 . The identification document of  claim 11 , wherein the second polymer of the release layer is selected from the group of polyamide, polyurethane, polystyrene, and polyacrylate. 
     
     
         14 . The identification document of  claim 11 , wherein the first polymer is hydroxypropyl cellulose and the second polymer is polyamide. 
     
     
         15 . The identification document of  claim 14 , wherein the ratio of polyamide to hydroxypropyl cellulose ranges from 80/20 to 20/80. 
     
     
         16 . The identification document of  claim 1 , wherein the release layer comprises about 2.5% hydroxypropyl cellulose by weight, about 2.5% polyamide by weight, about 45% iso propanol alcohol by weight, and about 45% n-propanol alcohol by weight. 
     
     
         17 . The identification document of  claim 1 , wherein the release layer ranges from about 0.01 to 1 micron in thickness. 
     
     
         18 . The identification document of  claim 17 , wherein the release layer is about 0.2 micron in thickness. 
     
     
         19 . A release coating blend, comprising:
 a first polymer, the first polymer having stronger release property; and   a second polymer, the second polymer having better adhesion to PVC and polycarbonate.   
     
     
         20 . The release coating blend in  claim 19 , wherein the first polymer of the release layer is selected from the group of polyvinyl alcohol, polysaccharide, cellulose, cellulose acetate butyrate, polyvinyl butyrate, and hydoxypropyl cellulose. 
     
     
         21 . The release coating blend in  claim 19 , wherein the second polymer of the release layer is selected from the group of polyamide, polyurethane, polystyrene, and polyacrylate. 
     
     
         22 . The release coating blend in  claim 19 , wherein the first polymer is hydroxypropyl cellulose and the second polymer is polyamide. 
     
     
         23 . The release coating blend in  claim 22 , wherein the ratio of polyamide to hydroxypropyl cellulose ranges from 80/20 to 20/80. 
     
     
         24 . The release coating blend in  claim 22 , wherein hydroxypropyl cellulose is about 2.5% by weight and polyamide is about 2.5% by weight. 
     
     
         25 . The release coating blend in  claim 24 , further comprising about 45% iso propanol alcohol by weight and about 45% n-propanol alcohol by weight.