摘要:
A photosensitive element is disclosed, and a process of forming an image with it, comprising, in order, a support with an optional subbing layer (1), a metal image forming layer, a photosensitive layer, and a transparent cover sheet with an optional subbing layer (2).After exposure a delamination step is performed thereby giving rise to a positive and a negative metal image. In a most preferred embodiment the metal layer is a bismuth layer.
摘要:
A method is disclosed, and a corresponding thermal imaging medium for use with it, for the formation of an improved heat mode image comprising (A) exposing information-wise to laser radiation a thermal imaging medium comprising (1) a transparent support, (2) an image recording layer containing a hydrophilic binder, a substance capable of converting laser radiation into heat, and a dispersion of a hydrophobic polymer capable of undergoing thermocoagulation by the action of heat and having a built-in UV-absorber. A heat mode image with high density and improved resistance to physical damage is obtained.
摘要:
A method is disclosed for the formation of a heat mode image with good differentiation between Dmin and Dmax. The method essentially comprises information-wise laser exposure of a layer pack comprising a layer containing a reducing agent, a barrier layer, and a layer containing a reducible organic metal salt, preferably silver behenate. The barrier layer is destructible by laser radiation and allows transfer of reducing agent in the exposed parts while no such transfer occurs in the unexposed parts. Preferably, an overall heat post-treatment is given. A mono-sheet and a two-sheet version of the invention are described.
摘要:
A method for inkjet printing includes, in order, the steps of a) providing an ink-receiver having an image thereon; b) forming on the ink-receiver a layer of a first curable liquid and curing the layer; and c) forming an outermost layer of a second curable liquid only on the cured first curable liquid and at least partially covering the image; wherein the second curable liquid contains an abherent agent which is absent in the first curable liquid and wherein at least one of the first and second curable liquids is inkjet printed. Also, a polymerizable abherent agent may be used in a curable liquid to prevent falsification of an ID document. Also, a set of curable liquids for inkjet printing includes a first curable liquid and a second curable liquid wherein the second curable liquid contains an abherent agent which is absent in the first curable liquid.
摘要:
A method of ink-jet printing including, in order, the steps of: a) providing a coated ink-receiving layer containing a polymeric binder and a curable compound; b) at least partially curing the coated ink-receiving layer according to a first image; and c) jetting at least one ink-jet ink on the ink-receiving layer according to a second image partially overlapping with the first image. The method can be advantageously used to apply authentication marks to a product, e.g., a security document or a product packaging.
摘要:
A method for preparing a tamperproof ID document comprising in order the steps of a) providing an ID document having at least one image on at least one outermost surface of said ID document; b) printing or coating a curable liquid on at least one of said outermost surfaces of said ID document thereby forming an outermost layer on said printed or coated outermost surface at least partially covering said at least one image; and c) curing said outermost layer; wherein said curable liquid comprises a polymerizable and/or a polymeric abherent agent and said printed or coated outermost surface is the surface of a layer or foil exclusive of porous pigment. Also disclosed is an ID document wherein the surface of an outermost layer at least partially covering an image on the ID document has a surface energy of less than 28 mN/m; and the use of an abherent agent-comprising curable composition to provide ID-documents with a substantially non-printable and substantially non-laminatable abhesive surface.
摘要:
Information carrier precursor comprising: a rigid sheet or support and a receiving layer configuration comprising at least one layer, wherein at least one layer of the receiving layer configuration is opaque, porous, has the capability of being rendered substantially transparent by penetration by a lacquer provided at the outermost surface of the receiving layer configuration and comprises at least one pigment, at least one binder and a pattern-wise applied diffusion inhibitor selected from the group consisting of silicones substituted with a polyalkyleneoxy-group, anionic surfactants having a fluoroalkyl-group with at least 7 carbon atoms and/or an alkyl group with at least 10 carbon atoms and/or an alkenyl group with at least 10 carbon atoms and/or two alkyl groups with at least 8 carbon atoms and cationic surfactants having a fluoroalkyl-group with at least 7 carbon atoms and/or an alkyl group with at least 10 carbon atoms and/or two alkyl groups with at least 8 carbon atoms; a method for producing the above-mentioned information carrier precursor; a method for producing an information carrier; and information carriers produced therewith.
摘要:
A coating device for coating a peripheral surface of a sleeve body with a coating formulation includes a vertical support column for supporting a sleeve body in a vertical position coaxial with a coating axis, a carriage slideable along the vertical support column, and an annular coating stage attached to the carriage and moveable therewith for containing the coating formulation and for coating a layer of the coating formulation onto the peripheral surface of the sleeve body during a sliding movement of the carriage along the vertical support column. The coating device includes an irradiation stage that is arranged to be moveable with the annular coating stage and to provide radiation to at least partially cure the layer of coating formulation onto the peripheral surface so as to prevent flow off of the coating formulation.
摘要:
A method of ink-jet printing an authentication mark on an article including, in order, the steps of: a) providing an article including an ink-receiving layer; b) applying a curable fluid on an ink-receiving layer according to a first image; c) at least partially curing the curable fluid; and d) jetting at least one ink-jet ink on the ink-receiving layer according to a second image partially overlapping with the first image. The method can be advantageously used to generate a security document.
摘要:
Information carrier precursor comprising a rigid sheet or support; a receiving layer configuration comprising at least one layer; and at least one substance, optionally provided pattern-wise, capable of and available for interacting in situ with at least one species diffusing through the receiving layer configuration to produce a functional species, wherein at least one layer of the receiving layer configuration is opaque, porous, has the capability of being rendered substantially transparent by penetration by a lacquer provided at the outermost surface of the receiving layer configuration and comprises at least one pigment and at least one binder; a method for producing the above-mentioned information carrier precursor; a method for producing an information carrier; and information carriers produced therewith.