Abstract: Systems and methods for printing and verifying product codes using ultraviolet (UV) fluorescing ink include, in at least one aspect, a system including: a UV light source configured and arranged to illuminate, with UV light, product codes printed on products; a camera configured and arranged to capture visible light emitted by a single ink of the product codes responsive to the illumination with the UV light, where the single ink includes a combination of a non-fluorescing substance and a UV fluorescing substance; and a controller coupled with the camera and configured to perform machine vision processing on the captured visible light to identify and confirm the product codes printed on the products.

Abstract: A purpose of the present invention is to provide a temperature history indicator that allows for visual confirmation of whether the temperature is at or below a prescribed temperature as well as simple conversion of this information into data. A temperature history indicator according to the present invention is characterized by being provided with a label layer and a temperature-indicating layer laminated above or below the label layer, wherein the temperature-indicating layer includes a substance having at crystallization starting temperature of 10° C. or lower and a melting point at least 20° C. higher than the crystallization starting temperature.

Abstract: The present invention addresses the problem of providing a temperature sensing body capable of sensing both a temperature increase and a temperature decrease, and having an anti-tampering function. In order to solve said problem, this temperature sensing body is characterized by including: a first ink in which a temperature Ta1 for initiating color disappearance when the temperature rises and a temperature Td1 for initiating color development when the temperature falls are different; and a second ink in which a temperature Ta2 for initiating color disappearance when the temperature rises and a temperature Td2 for initiating color development when the temperature falls are different, wherein the temperature Ta1 for initiating color disappearance, the temperature Td1 for initiating color development, the temperature Ta2 for initiating color disappearance, and the temperature Td2 for initiating color development have the relationship, Td1<Td2<Ta1<Ta2.

Abstract: A housing for an electronic device, comprising a transparent plate, comprising a first side; a conducting layer, formed on the first side of the transparent plate, for shielding electromagnetic interference generated by the electronic device; and a temperature dependent color-changing layer, formed on the first side of the transparent plate.

Abstract: The improved overflow pan for an appliance comprises a pan place under an appliance to collect water that may leak from the appliance, from water supply lines connected to the appliance, from condensation created by operation of the appliance, or from failure of the drainage system. The improved overflow pan for an appliance comprises a drain to allow the collected water to flow away from the area of the appliance. The improved overflow pan for an appliance undergoes a thermochromatic color change of the pan that is triggered by water collecting in the pan. The thermochromatic color change provides a distinct visual cue that water may not be draining from the pan properly.

Abstract: A compound for an organic optoelectronic device represented by Chemical Formula 1 wherein groups R1-R4, Ar1, Ar2, L1, L2, X, n1, and n2 are described in the specification.

Abstract: Apparel for monitoring optimal body shell temperature during physical activity. The apparel uses thermochromic dyes and thermochromic inks to indicate changes in body shell temperature as physical activity commences and progresses. The thermochromic dyes and inks reveal when the body shell temperature has reached a temperature indicating optimal muscle performance, and inform the wearer of the apparel whether to increase or decrease the intensity of the physical activity to establish or maintain the optimal body shell temperature.

Abstract: A document which may be a security document has a thermochromic coating which may be a thermochromic ink on the substrate of the document. The ink may include several thermochromic materials which transition from various different colors to substantially clear in appearance as the ink is warmed to various temperatures. The combination of the colors of the thermochromic materials can give the document a different color at a number of different temperatures, until the coating is warmed to the highest color change point. When at or above the highest color change temperature, the coating becomes substantially transparent and the printed area assumes the color of the underlying substrate. The coating may also include non-reactive materials of yet another color that mixes with the colors of the thermochromic materials.

Abstract: An LED illumination device includes a wavelength converting element having a matrix material, at least one phosphor, and a thermochromic dye component or a phase change medium component.

Abstract: A heat-sensitive color-developing composition containing a hydroxyquinoline compound having a methyl group and an acid anhydride compound represented by general formula (1): wherein ring A represents a substituted or unsubstituted aromatic hydrocarbon ring, and n represents an integer of 1 to 3, and a heat-sensitive recording material containing the composition in a recording layer.

Abstract: A metal nanoparticle composition includes an organic-stabilized metal nanoparticle and a solvent in which the solvent selected has the following Hansen solubility parameters: a dispersion parameter of about 16 MPa0.5 or more, and a sum of a polarity parameter and a hydrogen bonding parameter of about 8.0 MPa0.5 or less. The metal nanoparticle composition is suitable for printing conductive lines that are uniform, smooth and narrow on various substrate surfaces. The metal nanoparticle composition is able to form printed conductive features having a coffee ring effect ratio of about 1.2 to about 0.8, a surface roughness of about 15 or less and a line width of about 200 microns or less.

Abstract: Coating compositions and industrial packages including the coating compositions are disclosed.

Abstract: The invention relates to a composite with inverse thermochromic properties, the composite changing from a colorless into a colored state with increasing temperature. The composite thereby contains a colorant, a developer and a fluxing agent and also an inorganic filler. The invention likewise relates to a composite material which contains a polymer-based matrix into which at least one composite with inverse thermochromic properties is doped. These composite materials are used in the field of sensor technology, solar technology, transport and communications technology and medical technology.

Abstract: The application discloses stable correction fluids and/or correction fluids that change from colored to substantially white (or to a color substantially matching the color of a substrate to which the correction fluid is to be applied) after application to a substrate.

Abstract: A water-based drawing surface and a toy employing same are disclosed. The drawing surface includes a plastic substrate layer and a fabric layer adhered to the plastic substrate layer. A substantially water-resistant layer is applied to the fabric layer, and an ink layer is applied to the substantially water-resistant layer. The ink layer includes ink imprinted thereon, the ink being water-soluble when initially applied to the substantially water-resistant layer and insoluble after the ink has dried on the substantially water-resistant layer. When water is applied to the ink layer after the ink has dried thereon, the ink layer darkens in the shape of the water applied thereto. The ink is preferably screen-printing ink and it is preferably hand brushed onto the fabric layer.

Abstract: A thermal ink which comprises a colour former, a colour developer and a sensitizer, characterised in that the colour former comprises 3-dibutylamino-6-methyl-7-anilinofluoran; the colour developer comprises bisphenol A; and the sensitizer comprises dimethyl terephthalate; and that the ink also comprises at least one pigment. This ink may be used in thermal papers to reduce unwanted discolouration during storage.

Abstract: An improved color changing correction fluid is provided which includes either a volatile base or a volatile acid in combination with a color changing pH indicator, all in a water based fluid or system. As the fluid dries, the volatile base or acid evaporates along with the water and the pH color changing indicator changes from a colored state to a clear state. For white paper, a white pigment is utilized and therefore the fluid changes from a colored state to a white finished state as the solvent water and acid or base evaporates. Different color pigments can be utilized to match the color of the particular paper or substrate.

Abstract: The present invention provides a composition for water-removable ink with an effect of coupling retardation by using an aliphatic alcohol as a solvent, which is selected from a group comprising n-butyl alcohol, n-propyl alcohol, isopropyl alcohol and pentanol, so that the curiosity of infants or juveniles can be stimulated to enhance the learning effect and also various desires of students or adults can be satisfied in terms of ornamental purposes.

Abstract: A coating includes an antenna uniformly distributed in both a matrix and a leuco-dye phase of the coating. A method for preparing an imaging material includes providing a powder having an activator and an antenna, dissolving the activator/antenna powder to form an activator/matrix pre-polymer solution, providing a leuco-dye alloy, and dispersing the leuco-dye alloy into the activator/matrix pre-polymer solution to form a radiation-curable paste. An image-recording medium includes a matrix having an antenna and an activator, and an alloy dispersed in the matrix as an independent phase. The alloy includes an antenna, a leuco-dye, and an accelerator.

Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.

Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.

Abstract: On a support, a porous resin layer which is opaque in a water-unabsorbed state and capable of turning transparent in a water-absorbed state is formed, and also a water-repellent resin layer is so provided as to exist in the porous resin layer at its some area or areas in a co-existent state, to make up a water-metachromatic laminate. A novel toy element can be provided in which latent images standing invisible in a normal condition are rendered visible by means of water as a medium so as to be visually distinguished.

Abstract: There are described articles bearing indicia applied with an ink composition which comprises two or more color-changing or color-forming components which combine, or become diluted, upon exposure to water for a sufficient period of time to cause a change in the appearance of the indicia. Also described are printing ink compositions for forming such indicia and methods for forming such articles.

Abstract: A thermally sensitive recording medium having sufficient color developing density and which develops russet or wine red color. The recording medium incorporates a dye precursor which includes at least one red color developing leuco dye having a maximum absorption wavelength of 480 to 570 nm and at least one black color developing leuco dye with maximum absorption wavelengths at 420 to 480 nm and 550 to 640 nm. The color difference a* value of developed image of said thermally sensitive recording medium, measured according to JIS-Z-8729 is within the region of 0 to 50 and b* value is within the region of −15 to 10.

Abstract: Apparel for monitoring optimal body shell temperature during physical activity. The apparel uses thermochromic dyes and thermochromic inks to indicate changes in body shell temperature as physical activity commences and progresses. The thermochromic dyes and inks reveal when the body shell temperature has reached a temperature indicating optimal muscle performance, and inform the wearer of the apparel whether to increase or decrease the intensity of the physical activity to establish or maintain the optimal body shell temperature.