摘要:
A method for applying a security device (e.g., a micro-optic security thread) to a fibrous web during manufacture is provided. By way of the inventive method, the security device is preferably applied onto the fibrous web at or near a couch roll or similar tool of a paper machine when the fibrous web constitutes a sufficiently consolidated, fully formed wet web. Papers made in accordance with the inventive method, when subjected to the Circulation Simulation Test, showed minimal damage at the paper/security device interface. Moreover, the surface-applied security devices showed acceptable levels of intaglio ink adhesion, and the papers had higher cross-direction (CD) tensile strength and much less show-through on opposing sides thereof.
摘要:
A mast-raising mechanism for raising a mast of a mobile lift crane to an operating position includes a hydraulic cylinder extendable to raise the mast. The hydraulic cylinder includes a first end pivotally coupled to a rotating bed of the crane and a second end spaced apart from the first end. A first arm includes a first end pivotably coupled to the second end of the hydraulic cylinder. The hydraulic cylinder extends to press the first end against a bearing surface on the mast. The first arm also includes a second end spaced apart from the first end. A second arm includes a first end proximate the second end of the first arm and a second end spaced apart from the first end. The second end of the second arm is pivotably connected to the rotating bed. A biasing mechanism urges the first arm towards the second arm.
摘要:
A soil and/or moisture resistant secure document and a method for producing such a secure document, are provided. The inventive method preferably employs a size press or other similar device to force a soil and/or moisture resistant formulation into the pores of the substrate and to remove excess formulation from opposing surfaces thereof. Soil and/or moisture resistant formulations when applied this way instead of by way of standard coating techniques do not obscure optically variable effects generated by nonporous OVDs that may be employed on or within these secure documents. In addition, thin layers of fibers (e.g., papermaking fibers) overlying and thus embedding portions of security devices in windowed secure documents that have been rendered soil and/or moisture resistant in accordance with this invention demonstrate increased durability.
摘要:
An optical device projecting one or more synthetically magnified images that has been laser marked with one or more static two dimensional (2D) images is provided. The static 2D image(s) laser marked on or within this device and the synthetically magnified image(s) projected by this device help determine the authenticity of a document (e.g., passport data page) or product that employs it. Several embodiments of the inventive device also offer increased resistance to tampering or alteration and wear.
摘要:
A security device having at least one durable tactile marking (16) in the form of one or more relief structures is provided. The one or more relief structures are selected from the group of elastically deformable relief structures, relatively compression-resistant relief structures, and combinations thereof. Also provided is a fibrous or non-fibrous sheet material (10) with at least one durable tactile marking, which is suitable for use in making secure and non-secure documents or labels. The tactile marking (s) is applied directly to a surface of the sheet material, or is provided by way of the above-described security device (s), which is mounted on a surface of the sheet material and/or at least partially embedded therein. The durable tactile marking (s) serves to provide a visually challenged person with information concerning the type and/or value of the secure or non-secure document or label.
摘要:
A soil and/or moisture resistant secure document and a method for producing such a secure document, are provided. The inventive method preferably employs a size press or other similar device to force a soil and/or moisture resistant formulation into the pores of the substrate and to remove excess formulation from opposing surfaces thereof. Soil and/or moisture resistant formulations when applied this way instead of by way of standard coating techniques do not obscure optically variable effects generated by non-porous OVDs that may be employed on or within these secure documents. In addition, thin layers of fibers (e.g., papermaking fibers) overlying and thus embedding portions of security devices in windowed secure documents that have been rendered soil and/or moisture resistant in accordance with this invention demonstrate increased durability.
摘要:
Durable security devices that are resistant to chemical attack and mechanical degradation and security articles employing such devices, are provided. By way of the durable security device of the present invention, opposing longitudinal borders adjacent an information-bearing layer are sealed, thereby preventing corrosive and/or degrading materials from reaching this layer through these sealed borders. In a preferred embodiment, at least a portion of the information bearing layer is fully encapsulated, thereby rendering this portion or layer and the information conveyed thereby, impervious to chemical attack.
摘要:
Paper-based security devices having printed marks or indicia on one surface that are visible from that surface and from an opposing surface of the security device, are provided. The present invention further provides a method of making such paper-based security devices as well as security documents having at least one such security device embedded therein and/or mounted thereon.
摘要:
Durable security devices that are resistant to chemical attack and mechanical degradation and security articles employing such devices, are provided. By way of the durable security device of the present invention, opposing longitudinal borders adjacent an information-bearing layer are sealed, thereby preventing corrosive and/or degrading materials from reaching this layer through these sealed borders. In a preferred embodiment, at least a portion of the information bearing layer is fully encapsulated, thereby rendering this portion or layer and the information conveyed thereby, impervious to chemical attack.