Abstract:
The present invention relates to the field of the protection of security documents, in particular banknotes, against premature detrimental influence of soil and/or moisture upon use and time. In particular, it relates radiation curable protective varnishes comprising one or more cationically curable compounds and one or more di-hydroxyl-terminated perfluoropolyether compounds of the general formula HO—(CH2CH2O)c—CH2—CF2O—(CF2—CF2O)a—(CF2O)b—CF2—CH2—(OCH2CH2)d—OH, wherein a and b independently are integers in a range between 0 and 50, wherein a+b≧1, and wherein c and d may be the same or different and are in the range of 1-20, and their uses for providing a protective coating or layer on a security document.
Abstract:
Polycyclic aromatic hydrocarbon compounds having an S atom or S(═O)2 moiety incorporated in their basic polycyclic structure that can have a nitrogen-containing heterocycloaliphatic group and/or a substituted or unsubstituted phenoxy group and/or a polymeric moiety bonded to the polycyclic structure and to compositions such as, e.g., printing inks which comprise these polycyclic aromatic hydrocarbons as colorants.
Abstract:
So as to accurately measure the consumption of material from a reservoir to a high degree of precision during dispensing, and when calibration of the measurement device cannot be reliably performed, the invention proposes an apparatus and a method for measuring a quantity of material to be dispensed. The dispensing apparatus has a dispensing unit for dispensing at least part of the material; a reservoir containing the material to be dispensed; connectors between the reservoir and the dispensing unit; a scale under the reservoir, the scale being for connection to a processor for processing electronic signals from the scale and for converting the signals into a weight measurement; and tubes inserted into the reservoir, the tubes carrying material into and from the reservoir, the tubes being inserted into the reservoir by means of one of the following : i. through a flexible membrane surrounding the connectors, ii. with flexible tube sections between the connectors and the dispensing unit, and iii. through a reservoir cap, the cap sliding relative to the reservoir.
Abstract:
There is described a method for depositing at least one biological fluid onto a surface of a substrate, the method comprising the steps of (i) providing at least one thermal bubble jet printhead loaded with at least one biological fluid, (ii) positioning the printhead next to the substrate, and (iii) supplying the printhead with energy thereby depositing the biological fluid onto the surface. The printhead is supplied with an energy E such that E>1.6*Eth where Eth is the threshold energy of the printhead. There are also described an apparatus for depositing at least one biological fluid onto a surface of a substrate and a microarray obtained by carrying out the depositing method.
Abstract:
The disclosed annular light guide illuminator (10) is operable to guide light from its entry surface (12) to its exit surface (16) for illuminating a zone (17) at its distal end (19), and comprises a truncated-cone-shaped inner cavity (18) of which base opens onto said distal end (19), and of which truncated summit (20) opposite to said base opens onto an inner hole portion (21) for back transmitting light reflected/emitted from said zone. An optical scanner implementing said illuminator is also disclosed.
Abstract:
An oxidatively curing intaglio printing ink is disclosed, comprising an oxidatively curable polymer, an anionic macromolecular surfactant, a wax component, and a salt of vanadium, preferably of the vanadyl (VO2+) ion, as the oxypolymerization inducing siccativating agent.
Abstract:
The present invention discloses a security element comprising a transparent substrate and a magnetically oriented image coating on said substrate, wherein said image coating is preferably laid out such as to show a 3-dimensional effect, appearing in positive or negative relief respectively, if observed form the recto- or the verso side, respectively. The security element can be easily identified by the unaided eye, by just turning around the document and observing the angle-dependent image on either side. On the other hand, the security element cannot be reproduced by scanning or copying the document.
Abstract:
A two-dimensional code that includes a bar code readable by a scanning operation is provided. The two-dimensional code has an associated alphanumeric representation, and the bar code and the alphanumeric representation represent the same first information. Further, a position of at least one character of the alphanumeric representation with respect to at least one element of the bar code represents second information.
Abstract:
A liquid crystal polymer marking is obtainable by a process that comprises applying a chiral liquid crystal precursor composition onto a substrate, heating the composition to a bring same to a chiral liquid crystal state, locally applying at least one modifying agent to modify the chiral liquid crystal state, and curing and/or polymerization the resultant product. This abstract is neither intended to define the invention disclosed in this specification nor intended to limit the scope of the invention in any way.
Abstract:
The present invention relates to a marking on an item or substrate, which marking is based on a chiral nematic (also called cholesteric) liquid crystal precursor composition. Prior to curing the chiral liquid crystal precursor composition in the chiral liquid crystal state at least one optical property exhibited by the composition is modified by two modifying agents of different types in at least one area of the item or substrate.