Patent Document ID: 6162485
Application ID: 09073959
Patent Status: 1

Claim One:
1. A method for forming fingerprints which comprises providing a first substrate having a first surface bearing a designated print image-forming area, said first substrate further bearing a localized coating of pressure-sensitive microcapsules containing a substantially colorless, image-forming reactant for forming an image of a print in said localized, image-forming area, said localized coating of said pressure-sensitive microcapsules being spaced apart from said designated print image-forming area, and an image-developing device comprising a second substrate, said second substrate being substantially transparent and having a first surface and a second surface, said first surface of said second substrate being coated with a dual-functional, reactive adhesive composition comprising a pressure-sensitive adhesive and an image-forming co-reactant capable of reacting with said image-forming reactant to form a visible, colored image in said designated print image-forming area, said second substrate being releasably attached to said first substrate and spaced apart from each of said designated print image-forming area and said localized coating of said pressure-sensitive microcapsules, contacting a member to be printed with said pressure-rupturable microcapsules under sufficient pressure from said member to rupture said microcapsules and release said image-forming reactant on said member to be printed, applying said coated member to be printed onto said print image-forming area to transfer said image-forming reactant to said print image-forming area to form an image of the print of said member to be printed in said print-image forming area, and separating said second substrate from said first substrate and adhering said second substrate to said first substrate with said reactive adhesive composition superposed and in direct contact with said print-image forming area.