Abstract: An image-receiving element adapted to the provision of a diffusion transfer photograph and having a preprinted security pattern between contiguous layers thereof is disclosed. The pattern comprises a patterning agent and a binder therefor preferentially adhesive to the contiguous layer closest in proximity to the image-receiving layer of such element. Diffusion transfer photographs prepared from the image-receiving element carrying the preprinted security pattern are useful in the production of an information-bearing document such as an ID card.

Abstract: An improved illumination system for electro-optical liquid crystal display devices comprising a nacreous transflector element capable of transmission as well as reflection of light so as to accommodate effective display illumination in conjunction with external and/or internal light sources for enhanced display viewability under all ambient lighting conditions.

Abstract: Laminated documents, such as ID cards, including a color-coded protective assembly comprising a novel pigment composition integrated with an adhesive bond within the assembly.

Abstract: Protective coatings for securing documents from alteration comprising a noncohesive adhesive layer integrated with a verification feature and a method for applying such coatings.

Abstract: Laminar structures comprising a color diffusion transfer photographic print bonded to a vinyl sheet using an adhesive mixture of a vinyl acetate-ethylene copolymer and a hydroxylated polymer, and a method for preparation thereof using an adhesive-supporting carrier sheet.

Abstract: Laminated documents such as I.D. cards using a light-transmissive pigment material as a verification or validation pattern.

Abstract: Laminated documents such as I.D. cards using a light-transmissive pigment material as a verification or validation pattern.

Abstract: A protective plastomeric sheet material for lamination to an image containing layer of a diffusion transfer photographic product.