摘要:
This invention relates to pressure indicating materials, in particular sheet materials that indicate pressure by a colour transformation. Materials and two-sheet pressure imaging means are described that comprise a first sheet material comprising a microporous membrane within which is associated a solution comprising a colour former and a second sheet comprising a colour developer.
摘要:
The present invention relates to devices and apparatus for detecting contact and optionally its duration and/or recording the level of pressure and/or its duration and/or recording the level of shear force and/or its duration. In particular, certain embodiments of the present invention relate to devices which comprise an element comprising a hydrophobic material and a color-forming material dispersed in at least a portion of the hydrophobic material. Certain embodiments of the present invention relates to materials comprising a solid dispersion of a color-forming material in an elastomeric hydrophobic material. The solid dispersion may take the form of a molecular dispersion or a partial molecular dispersion. Also included in the present invention, although not exclusively, are devices which comprise a hydrophobic material, a color-forming material and a color developing material wherein the color forming material and the color developing material are brought into contact when pressure of a predetermined threshold level is applied or removed from the device.
摘要:
The invention is an article and method of discretely recording confidential information especially for lottery applications and comprises: providing a substrate assembly comprising a) a substrate, b) a first layer of an acid developer material coated on the substrate, c) a meltable barrier layer applied over the acidic developer material, the meltable barrier layer being meltable in response to the applied heat of a thermal printhead or laser, d) a scratch-off layer coated over the meltable barrier layer, and e) pressure-sensitive microcapsules containing a dye precursor and solvent dispersed in any of the layers and, recording non-visible information by selective application of heat to the substrate assembly using a thermal printhead or laser, the barrier layer being “activated” by melting in discrete areas where heat is selectively applied from the thermal printhead or laser. The recorded non-visible information is revealed by removing the scratch-off layer using applied pressure thereby rupturing the microcapsules enabling the dye precursor to contact the acidic developer material and form a visible color in the discrete area where the barrier layer was melted by application of heat using a thermal printhead or laser.
摘要:
The present invention relates to devices and apparatus for detecting contact and optionally its duration and/or recording the level of pressure and/or its duration and/or recording the level of shear force and/or its duration. In particular, certain embodiments of the present invention relate to devices which comprise an element comprising a hydrophobic material and a colour-forming material dispersed in at least a portion of the hydrophobic material. Certain embodiments of the present invention relates to materials comprising a solid dispersion of a colour-forming material in an elastomeric hydrophobic material. The solid dispersion may take the form of a molecular dispersion or a partial molecular dispersion. Also included in the present invention, although not exclusively, are devices which comprise a hydrophobic material, a colour-forming material and a colour developing material wherein the colour forming material and the colour developing material are brought into contact when pressure of a predetermined threshold level is applied or removed from the device.
摘要:
The present invention relates to methods of producing color change in overlapping layers of material. The method comprises providing a first layer having a first activatable colorant and a second layer having a second activatable colorant. A first external stimulus is applied to activate the first activatable colorant and produce a first activated color region in the first layer. A second external stimulus is applied to activate second activatable colorant and produce a second activated color region in the second layer.
摘要:
A fine particle which contains a compound represented by formula (1): wherein R1a and R1b may be the same or different, and each independently represent an alkyl group, an aryl group, or a heteroaryl group; R2 and R3 each independently represent a hydrogen atom or a substituent, and at least one of R2 and R3 is an electron withdrawing group; R2 may be bonded to R3 to form a ring; R4 represents a hydrogen atom, an alkyl group, an aryl group, a heteroaryl group, a substituted boron, or a metal atom; and R4 may be covalently bonded or coordinately bonded to at least one among R1a, R1b and R3.
摘要:
A transfer print structure is provided. The transfer print structure comprises a substrate; a color ink layer including a functional region; and an adhesive device combining the functional region with the substrate.
摘要:
A reveal substrate includes a sensitive substrate having an opaque polymer sensitive to application of one of heat and pressure which upon one of being heated to a predetermined temperature and subjected to a predetermined pressure causes the opaque polymer to become transparent and a color material disposed in relation to the substrate in a manner to be obscured by the opaque polymer prior to one of the application of the predetermined heat and the predetermined pressure and is revealed subsequent thereto. A method of printing employing the reveal substrate is also provided.
摘要:
Media for use with an activation printer, the media comprising at least one surface having an array of pixels deposited thereon, each pixel containing at least one activatable colourant, wherein different pixels have different colourants and the pixels are arranged in a predetermined pattern, such that, in use, a multicolour image can be produced when the paper is passed through an activation printer. An activation printer for use with the above media comprising means for detecting the pattern of pixels in the array on the media so that the printer is able to determine which pixels on the paper to activate in order to produce the desired multicolour image.
摘要:
A latent image developing system, a novelty kit, and an ink composition for printing latent images on a substrate. The latent image developing system includes a first substrate containing a colorless image deposited on a first surface thereof. A developer component is provided that is reactive with the colorless image to provide a visible image. The developer component is selected from a developer instrument, a developer finger paint, a developer coating on a first surface of a substantially transparent substrate for adhesive attachment to the first substrate, and a combination of one or more of the developer instrument, the developer finger paint, and the developer coating. The latent image developing system optionally includes, an image blocking instrument for concealing at least a portion of the visible image. The image blocking instrument includes a blocking composition applicator and an aqueous mixture of blocking composition and water.