Abstract:
The application of Lippmann photographs as a unique security device on security documents, such as, e.g. identity cards, passports, credit cards is presented. The recording of such photographs requires a special type of photosensitive film layer in contact with a reflecting layer. Panchromatic photopolymer materials can be used and, after being recorded and processed, laminated to security documents. Lippmann photographs are almost impossible to copy and, certainly, cannot be copied by conventional photography or color copying machines.
Abstract:
The present invention relates to laser techniques for processing solid materials and more precisely to a technique for creating images within the volume of a transparent article so as to obtain various colour effects. The conventional methods for forming three-dimensional images within a volume include the following steps: focusing a laser beam at a given point in the volume of the transparent model; radiating said model at a power density exceeding the threshold value of the volumetric breakdown of the model material; and displacing said model relative to the laser beam according to predetermined commands. The method of the present invention is characterised relative to traditional ones in that it can be used for forming three-dimensional colour images within the volume. This method for forming three-dimensional images within a volume comprises radiating each point of the image to be formed within the transparent model using focused laser beam, wherein said beam is emitted at a power density exceeding the threshold value of the optical and volumetric breakdown of the material. However, unlike the prototype, the transparent model consists of a porous material in which one substance at least is introduced, wherein the physical and chemical properties of said substance change irreversibly in the volume of the transparent model under the action of the optical and volumetric breakdown factors.
Abstract:
A high gloss photo media that has a gloss at 20 degrees equal to or greater than 40% includes a photo media substrate that includes a gloss-enhancement film on a front side of a photo base material. A curl control material is on a back side of the photo base material opposite the front side. The gloss-enhancement film being a multilayer that includes an adherent layer and a layer of one of a polyester composition and a polypropylene composition. A thickness of the gloss-enhancement film is at least 20 microns. The high gloss photo media further includes an image receiving layer on the gloss-enhancement film.
Abstract:
The present invention relates to a method of producing color change in a substrate. The substrate includes an activatable colorant and a region that is heated prior to activating the activatable colorant. The substrate is exposed to electromagnetic radiation producing a first activated color region in the heated region and a second activated color region in a non heated region. The first activated color region appears in a different shade than the second activated color region.
Abstract:
The present invention relates to a method of producing activated color regions in a web substrate where activated color regions are formed coinciding with deformed regions. The method includes providing a web substrate having an activatable colorant and producing a first activated color region therein. The web substrate is mechanically deformed to produce at least one deformed region in the first activated color region such that a second activated color region is produced coinciding with the at least one deformed region.
Abstract:
An imageable article includes a backside filled resin layer bonded to a back side of a paper substrate. The backside filled resin layer includes: resin selected from the group consisting of low density polyethylene (LDPE), and a combination of low density polyethylene (LDPE) and high density polyethylene (HDPE); and a filler selected from the group consisting of calcium carbonate, zeolite, silica, talc, alumina, aluminum trihydrate (ATH), calcium silicate, kaolin, calcined clay, and combinations thereof. The backside filled resin layer further includes from approximately 3 weight% to approximately 60 weight% of the filler.
Abstract:
In a system and process for developing an imaged plate by contacting the plate with an alkaline developer, contained in a developer tank having a cover spaced over the developer level, the space between the developer level and cover is maintained at a concentration of carbon dioxide below ambient for a substantial portion of each day. Preferably, active carbon dioxide control is implemented in the space at least during idle periods, to maintain the concentration of carbon dioxide below about 100 ppm, preferably in the range of 0-10 ppm. The system has a first conduit with an extraction port in the space and a second conduit with a return port in the space. A canister or closed vessel of carbon dioxide scavenger material in the form of pellets or a strong alkaline solution, is fluidly connected between the conduits. An air handling device fluidly connected with the conduits and scavenger material, draws air out of the space, passes the drawn air through the canister or vessel, and delivers the scavenged air back into the space. A special cover having the ports, can be fit over the developer to enhance the sealing of the space from ambient air and thereby improve efficiency.
Abstract:
Plates coated with compositions photothermally sensitive to multiple portions of the electromagnetic spectrum and useful for the preparation of lithographic printing plates, color proofing films and the like by computer to Alate imaging processes comprising a solvent, cross-linkable polymers and monomers, and energy absorbing dye/laser dye/initiator/sensitizers, where the energy absorbing dye/laser dye/initiator/sensitizers are selected from dye/initiator/sensitizers having increased sensitivities to varying portions of the electromagnetic spectrum and where the sensitivity of the imaged Alate is increased by Are-heating prior to development.
Abstract:
In a substantially planar circuit, the conductors are separated by an inorganic material with a dielectric constant of less than about 3.0. The dielectric layers are formed in a process that includes defining trenches and/or vias for the conductors by imprinting an initially planar layer of a radiation curable composition. The imprinting die is preferably UV transparent such that the composition is UV cured while the imprint die is in place. The curable composition includes an organic modified silicate compound and a second decomposable organic component, the latter forming nanometer scale pores as the organic compounds are subsequently decomposed to provide a polysilicate matrix. The pores reduce the effective dielectric constant from that of otherwise dense silicon dioxide.