Multilayer Paper System

Abstract

A multilayer paper system that allows a user to write or fill in forms while non-users are unable to see what is written through the use of a first layer privacy screen with embedded micro-louvers, a second color change layer with microencapsulated dye, and a stylus type pen that causes color change to occur on the second layer while reducing the ability for those next to or around the person to discern what is written on the sheet.

What is claimed is: 
     
         1 . A multilayer paper system, comprising:
 a first thin privacy screen layer with embedded micro-louvers;   a second color changing layer including microencapsulated agent;   wherein a stylus type pen is used to impress or write on the privacy screen layer.   
     
     
         2 . The multilayer paper system of  claim 1  wherein the first thin privacy screen layer is a material generally between around 0.1-0.7 MM. 
     
     
         3 . The multilayer paper system of  claim 1  wherein the second layer is separable from the first layer such that the second layer can be scanned after separation. 
     
     
         4 . The multilayer paper system of  claim 1  wherein the visibility reducing filter allows for anything viewed through the filter to be discernable within a predetermined range of angles, but not discernable at angles outside of the predetermined range. 
     
     
         5 . The multilayer paper system of  claim 1  wherein the visibility (transmittance) within the predetermined range is between 50% and 100% and the visibility outside the predetermined range is between 0% and 50%. 
     
     
         6 . The multilayer paper system of  claim 1  wherein permanent color change will occur in less than 30 seconds. 
     
     
         7 . The multilayer paper system of  claim 1  wherein the color changing layer reacts to a normal writing pressure. 
     
     
         8 . The multilayer paper system of  claim 1  wherein the color changing layer comprises a dye. 
     
     
         9 . The multilayer paper system of  claim 1  wherein the color changing layer is a substrate containing microcapsules which contain a color forming solution. 
     
     
         10 . The multilayer paper system of  claim 1  wherein the resulting color change can be read via OMR devices. 
     
     
         11 . A scannable response form, comprising:
 a first layer comprising a visibility-reducing filter allowing for viewing therethrough within a predetermined range of viewing angles and reduced visibility when viewing from other angles;   a second layer comprising pressure-sensitive microencapsulated dye;   wherein pressure applied to the first layer causes microencapsulated dye in the second layer to rupture and leave a mark in the second layer.   
     
     
         12 . The scannable response form of  claim 11 , wherein the predetermined range of viewing angles is from 70 degrees to 90 degrees. 
     
     
         13 . The scannable response form of  claim 11 , wherein the first layer further includes preprinted indicia. 
     
     
         14 . The scannable response form of  claim 11 , wherein the second layer further includes preprinted indicia. 
     
     
         15 . The scannable response form of  claim 11 , wherein the pressure required to rupture the microencapsulated dye in the second layer is the pressure normally exerted when writing. 
     
     
         16 . The scannable response form of  claim 11 , wherein the first layer and the second layer are separable such that the second layer can be read using an OMR device.