摘要:
A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one stabilizer selected from the group consisting of 1-phenyl-5-mercaptotetrazole compounds in which the phenyl group is substituted with a substituent containing an optionally substituted aryl group; and
摘要:
A recording material comprising a support and a thermosensitive element containing silver behenate, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the silver behenate is not associated with mercury and/or lead ions and when the recording material is irradiated with a copper K.alpha..sub.1 X-ray source the ratio, normalized to a quantity of silver in the recording material of 1 g per m.sup.2 thereof, of the sum of the peak heights of the X-ray diffraction lines attributable to silver behenate at Bragg angles, 2.THETA., of 6.01.degree., 7.56.degree., 9.12.degree., 10.66.degree., 12.12.degree. and 13.62.degree. to the sum of the peak heights of the X-ray diffraction lines at Bragg angles, 2.THETA., of 25.60.degree., 35.16.degree. and 43.40.degree. of NIST standard 1976, rhombohedral Al.sub.2 O.sub.3, determined with the same X-ray diffractometer in the same state of adjustment, is greater than 0.85; production processes for particles of substantially light-insensitive organic silver salt comprising silver behenate with these X-ray characteristics in the presence and substantial absence of organic solvent.
摘要:
A security laminate for securing a security document comprising: a) a biaxially stretched polyethylene terephthalate support; and b) a thermosensitive layer coated on the support; wherein the thermosensitive layer contains a binder, a substantially light-insensitive organic silver salt, an organic reducing agent and a toning agent selected from the group consisting of phthalimides, phthalazinones, benzoxazine diones and naphthoxazine diones. Methods for manufacturing security documents are also disclosed.
摘要:
A security laminate comprising a plurality of lamellae and layers, wherein at least one of the lamellae is a biaxially stretched polyethylene terephthalate film, and wherein the ratio of the thickness of the one or more biaxially stretched polyethylene terephthalate films over the total thickness of the security laminate is at least 0.21. A method for detecting the falsification of such security laminates by a sound characteristic is also disclosed.
摘要:
A process for producing a security laminate comprising a plurality of lamellae and layers, comprising the steps of: a) providing at least one film, at least a first and a second prelaminate and a contactless module, wherein the contactless module is not incorporated in the prelaminate or the film; and b) laminating in one step together the at least first prelaminate, the at least one film, the contactless module and the at least second prelaminate to provide the security laminate.
摘要:
A smart information carrier comprising a security element having two sides each side being laminated with at least one transparent polymer foil having a melting point higher than 150° C. so that the security element is surrounded by an edge at least 1 mm wide in which the at least one transparent polymer foil on each side of the security element are laminated to one another, the security element comprising an IC-module and a natural fibre-containing or synthetic fibre-containing continuous support exclusive of an antenna, the IC-module comprising an electronic chip and an antenna integrated therein, wherein the support is security printed on at least the side of the support nearer to the IC-module and the IC-module is at least substantially encapsulated with a transparent polymer or polymer mixture with a melting point up to 150° C. which also coats at least the part of the side of the support nearer to the IC-module non-adjacent to the IC-module; and a method for producing a smart information carrier comprising the steps of: security printing at least one side of a natural fibre-containing or synthetic fibre-containing continuous support; if only one side of the support is security printed the non-security-printed side of the support is placed on the lower melting point side of a two polymer laminate with the high melting point side having a melting point higher than 150° C. and an IC-module comprising an electronic chip and an antenna integrated therein is placed on the other side of the support; placing a further sheet of a two polymer laminate with the high melting point side having a melting point higher than 150° C. on the IC-module with the lower melting point side nearer the IC-module with at least one sheet of a polymer foil with a melting point of up to 150° C. between the IC-module and the lower melting point-side of the further sheet of a two-polymer laminate; laminating the resulting sandwich in a laminator; and punching out a smart information carrier so that the support is surrounded by an edge at least 1 mm wide in which the transparent polymer foil are directly laminated to one another, wherein said natural fibre-containing or synthetic fibre-containing continuous support is exclusive of an antenna.
摘要:
A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one mesionic 1,2,4-triazolium-3-thiolate compound.
摘要:
A substantially light-insensitive black and white monosheet thermographic recording material has a support and on one side of the support comprises a thermosensitive element, a barrier layer and an outermost protective layer, the thermosensitive element being exclusive of a high contrast agent and containing at least one substantially light-insensitive silver salt of a carboxylic acid, at least one reducing agent therefor in thermal working relationship therewith, at least one toning agent and at least one binder, wherein the at least one reducing agent is an ortho-dihydroxy-benzene derivative and the barrier layer comprises a copolymer comprising vinyl chloride units and vinyl acetate and/or vinyl alcohol units, a copolymer comprising styrene units and acrylonitrile units, a copolymer comprising cationic units and/or a copolymer comprising styrene units and maleic acid units.
摘要:
A black and white monosheet thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith, a binder and at least one toning agent, wherein the at least one toning agent is represented by formula (I): wherein R1 is a hydrogen atom or an alkyl, an alkenyl, an alkynyl, a cycloalkyl, an alkaryl, an aryl, a heterocyclic or a heteroaryl group all of which may be optionally substituted; with the proviso that R1 may not be a hydrogen atom if both R2 and R3 are both hydrogen atoms; R2 and R3 are independently a hydrogen or a halogen atom or an amino, amide, ester, carboxy, carbonate, alkyl, alkenyl, alkynyl, cycloalkyl, alkaryl, aryl, heterocyclic or heteroaryl group all of which may be optionally substituted; R2 and R3 may together represent the atoms necessary to complete a heteroaromatic ring with no more than one nitrogen atom, an alicyclic or a heterocyclic group which all may be optionally substituted; and X is a carbonyl group, or is —N—R4, where R4 is an alkyl group.
摘要翻译:一种包含支持体和热敏元件的黑色和白色单片热成像记录材料,所述热敏元件含有基本上不光敏的有机银盐,与其热加工关系的有机还原剂,粘合剂和至少一种调色剂,其中 所述至少一种调色剂由式(I)表示:其中R 1是氢原子或烷基,烯基,炔基,环烷基,烷芳基,芳基,杂环或 全部可以任选被取代的杂芳基; 条件是如果R 2和R 3两个都是氢原子,R 1可以不是氢原子; R 2和R 3独立地是氢或卤素原子或氨基,酰胺,酯,羧基,碳酸酯,烷基,烯基,炔基,环烷基,烷芳基,芳基 ,杂环或杂芳基,其全部可以任选被取代; R 2和R 3可以一起表示完成具有不超过一个氮原子的杂芳环所必需的原子,所有可以任选取代的脂环族或杂环基 ; 并且X是羰基,或者是-N-R 4,其中R 4是烷基。
摘要:
A substantially light-insensitive thermographic recording material comprising a support and a thermosensitive element, the thermosensitive element containing silver behenate including phase I silver behenate having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.53°, 5.96-6.05°, 7.46-7.56°, 8.90-9.12°, 10.45-10.66°, 12.02-12.12°, 13.53-13.62°, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermographic recording material is capable upon thermal development of containing 1% of phase II silver behenate, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 5.34-5.78°, 6.12-6.41°, 7.68-7.79°, 8.30-8.59°, 9.36-9.84°, 10.6-10.96°, and/or phase III silver behenate phase, having an X-ray diffraction spectrum upon irradiation with a copper K&agr;1 X-ray source with Bragg angles 2&THgr; of 4.76-4.81°, 5.9-6.3°, 6.76-7.35°, 8.27-8.44° and 9.06-9.43°, which is stable at 25° C., with respect to the quantity of the phase I silver behenate in the thermographic recording material before said thermal development; a recording process therefor; and use of the above-defined phase II silver behenate stabilized at 25° C. and/or the above-defined phase III silver behenate stabilized at 25° C. as a tone modifier in thermographic recording materials.