Abstract:
A diagnostic test device comprising an absorbent medium and a reaction zone located between superposed sheets. The fluid containing the substance to be analyzed is placed on the absorbent medium. Compressive force is applied to the absorbent medium providing a predetermined quantity of fluid to the reaction zone where reagents are located to react with the substance to provide a colorimetric determination of the presence and/or concentration of the substance.
Abstract:
A backing or antihalation layer for a photosensitive element containing carbon black additionally contains a salt of a heavy metal. The heavy metal inhibits fog formation in the silver halide emulsion of the photosensitive element.
Abstract:
DIFFUSION OF UNDESIRABLE IMAGE-FORMING MATERIALS TO THE IMAGE-RECEIVING ELEMENT OF A MULTICOLOR DIFFUSION TRANSFER PHOTOGRAPHIC PRODUCT IS INHIBITED BY INCORPORATING IN SUCH PRODUCT AN IMAGE-FORMING MATERIAL IMPERMEABLE LAYER BETWEEN THE IMAGE-RECEIVING ELEMENT AND THE NEXT ADJACENT SILVER HALIDE EMULSION LAYER SUBSEQUENT TO SUBSTANTIAL IMAGE FORMATION.
Abstract:
SIMULTANEOUS OR SEQUENTIAL APPLICATIONOF TWO PROCESSING COMPOSITIONS, ONE CONTAINING AN OPACIFYING AGENT AND THE OTHER A REFECTING MATERIAL, TO AN EXPOSED PERMANENTLY STRUCTURED FILM UNIT TO OBTAIN A COLOR DIFFUSION TRANSFER THEREIN.
Abstract:
SIMULTANEOUS APPLICATION OF TWO PROCESSING COMPOSITIONS, ONE CONTAINING AN OPACIFYING AGENT AND THE OTHER A REFLECTING MATERIAL, TO AN EXPOSED PERMANENTLY STRUCTURED FILM UNIT TO OBTAIN A COLOR DIFFUSION TRANSFER THEREIN.
Abstract:
THE PRESENT INVENTION RELATES TO A COMPOSITE PHOTOGRAPHIC DIFFUSION TRNASFER PROCESS COLOR FILM UNIT WHICH INCLUDES RUPTURABLE CONTAINER MEANS RETAINING PROCESSING COMPOSITION CONTAINING AN INSOLUBLE POLYMERIC DISPERSION ADAPTED UPON LOSS OF PROCESSING COMPOSITION SOLVENT TO COALESCE AT AMBIENT TEMPERATURES FOR DISTRIBUTION BETWEEN PHOTOSENSITIVE AND IMAGE RECEPTIVE ELEMENTS OF THE UNIT.