Abstract: Sheet material suitable for preparing visual transparencies comprising:(a) a backing that is transparent to visible light,(b) an image receptive layer transparent to visible light adhered to at least one major surface of said backing, and(c) an anti-blocking layer transparent to visible light adhered to at least one major surface of said backing.The sheet material has an opague border extending around the periphery thereof. The sheet material also has an area of increased caliper along one edge thereof; this area extends inward from the edge for a distance not exceeding the width of the opague border along the edge. The border provides the sheet material with a frame, while the area of increased caliper provides improved feeding reliability for xerographic imaging apparatus.

Abstract: Transparency sheet material for use in a plain paper electrostatic copiers comprising (a) a flexible, transparent, heat resistant, polymeric film base, (b) an image receiving layer carried upon a first major surface of the film base, and (c) a layer of electrically conductive prime coat interposed between the image receiving layer and the film base. This sheet material can be used in either powder-toned or liquid-toned plain paper copiers for making transparencies.

Abstract: The addition of either a borohydride or borane complex anhydrously associated with an aldose to an inhibitor removing bath which does not contain a color reverse agent improves color balance and contributes color agent to the bath. Addition of these anhydrously associated materials avoids possible decomposition in premixed solutions.