Abstract: Disclosed is a waveguide having a light inlet surface and a viewing surface comprising stacked core layers separated by clad layers to form channels and bearing a smoothing layer on at least one of the light inlet surface or the viewing surface thereof.

Abstract: Disclosed is a waveguide having a light inlet surface and a viewing surface comprising stacked core layers separated by clad layers to form channels and bearing a smoothing layer on at least one of the light inlet surface or the viewing surface thereof.

Abstract: The invention relates to a method of improving raw stock keeping of silver containing imaging material comprising providing a package of said material and providing in said package a fiber board containing zeolite.

Abstract: A time and temperature integrating device for providing a visually observable indication of cumulative thermal exposure is disclosed comprising (a) at least two thermally sensitive image-forming areas of differing thermal sensitivity, and (b) indicating indicia in association with the thermally sensitive areas for indicating when each thermally sensitive area of the device has been exposed to predetermined cumulative thermal exposures. Such cumulative time-temperature exposure indicators may advantageously monitor and provide an ongoing record of thermal exposure prior to reaching a state of complete degradation, or other monitored property change, in an associated product.

Abstract: Time and temperature integrating devices for providing a visually observable indication of cumulative thermal exposure are disclosed comprising (a) a substrate having thereon a thermally sensitive image-forming area comprising a combination of (i) an organic silver salt oxidizing agent and (ii) a reducing agent for the organic silver salt oxidizing agent, and (b) indicating indicia in association with the image forming area for indicating when the device has been exposed to a predetermined cumulative thermal exposure. In accordance with further embodiments of the invention, a process of applying such a device to a perishable product, and a perishable product having such a device applied directly thereto or to packaging thereof, are also disclosed. Time-temperature indicators in accordance with the invention undergo readily detectable changes can be easily optimized to match various rates of time-temperature dependent cumulative changes desired to be monitored for various products.

Abstract: A packaged photographic product is disclosed comprising a) a silver halide based photographic material contained within a packaging enclosure, and b) a time and temperature integrating device for providing a visually observable indication of cumulative thermal exposure which is removably attached to the packaging enclosure with a pressure sensitive adhesive. In accordance with a preferred embodiment, the packaged photographic product further comprises an outer enclosure, and the packaging enclosure comprises a second enclosure within the outer enclosure, and the time and temperature integrating device is removably attached to the second enclosure with a pressure sensitive adhesive, and is visible through a transparent or open section of the outer enclosure.

Abstract: A photographic film cartridge is disclosed comprising a housing with an outer surface, and a time and temperature integrating device for providing a visually observable indication of cumulative thermal exposure on the outer surface, wherein the time and temperature integrating device is thin enough so as to not interfere with performance of the cartridge in a photographic camera and comprises a thermally sensitive image-forming area and indicating indicia in association with the image-forming area for indicating when the film cartridge has been exposed to a predetermined cumulative thermal exposure.

Abstract: A method for improving the archival properties of a processed photographic film and a storage assembly for achieving the same by placing the film in a sealed container together with molecular sieve zeolites.