Abstract:
Toning agents are provided for use in thermographic and photothermographic materials, either on their own or in combination with at least one other toning agent, with improved compatibility with hydrophobic media as shown by reduced crystallization and reduced diffusion through the material, which properties enabling an improved imaging performance to be achieved and in particular a more neutral image tone after storage.
Abstract:
The present invention concerns a thermal imaging process using (i) a donor element comprising on a support a donor layer comprising a binder and a thermally transferable reducing agent capable of reducing a silver source to metallic silver upon heating and an oxidised form of the reducing agent being colored or being capable of forming a color and (ii) a receiving element comprising on a support a receiving layer comprising a silver source capable of being reduced by means of heat in the presence of a reducing agent and comprising the steps of:bringing said donor layer of the donor element in face-to-face relationship with the receiving layer of the receiving element,image-wise heating a thus obtained assemblage to cause image-wise transfer of the thermally transferable reducing agent from the donor layer to the receiving layer in accordance with the amount of heat applied andseparating the donor element from the receiving element.
Abstract:
Dye-donor element comprising a support provided with a dye layer containing a cyan indoaniline dye and/or another cyan azomethine dye, together with a cyan thiazolylazoaniline dye.
Abstract:
Dye-donor element for use according to thermal dye sublimation transfer comprising a support having on one side a dye layer and on the other side a heat-resistant layer, said support carrying on at least one side a subbing layer comprising a polyester formed by polycondensation of at least one aromatic dicarboxylic acid and at least one aliphatic diol, wherein said polyester is a copolyester further comprising units derived from at least one multifunctional comonomer carrying at least 3 functional groups, which may be same or different and are chosen from hydroxy and carboxy groups including so-called latent carboxy groups.
Abstract:
A dye acceptor element for thermosublimation printing comprising a support and a dye acceptor layer containing a vinyl copolymer having a glass transition temperature of 50 to 100.degree. C. and a plasticizer having a molecular weight MW of 150 to 1,000 is distinguished by high color density, high sharpness, good image stability and a minimal tendency towards adhesion.
Abstract:
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.
Abstract:
A thermographic recording material, thermally developable under substantially water-free conditions, comprising a support and a thermosensitive element, the thermosensitive element being provided with a protective layer and the thermosensitive element containing a substantially light-insensitive silver salt of an organic carboxylic acid, a reducing agent therefor in thermal working relationship therewith and a binder, wherein the protective layer contains at least one proteinaceous binder and non-opacifying inorganic particles with a weight averaged diameter of less than 1&mgr;m in a concentration of between 5 and 70% by weight with respect to the weight of the protective layer.
Abstract:
A substantially light-insensitive black and white monosheet thermographic recording material comprising a support and a thermosensitive element which is optionally provided with a protective layer, wherein the thermosensitive element contains substantially light-insensitive mixed crystals of at least one organic silver salt and at least one organic fatty acid derivative, an organic reducing agent for the organic silver salt in thermal working relationship therewith and a binder and wherein the substantially light-insensitive mixed crystals are present in an inner layer of the thermographic recording material; and a recording process therewith.
Abstract:
A substantially light-insensitive black and white monosheet thermographic recording material is provided comprising a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein the 1,2-dihydroxyphenyl-compound is represented by formula (I): ##STR1## where R is --P(.dbd.O)R.sup.1 R.sup.2, --SO.sub.x R.sup.3, --CN, --NO.sub.2 or --CR.sup.4 .dbd.NR.sup.5 when n is 0; R is --P(.dbd.O)R.sup.1 R.sup.2, --SO.sub.x R.sup.3, --CN, --NO.sub.2, --CR.sup.4 .dbd.NR.sup.5 or --COR.sup.6 when n is an integer; R.sup.1 and R.sup.2 are independently an alkyl, an aryl, an alkoxy, an aryloxy, a hydroxy or an amino group; R.sup.3 is an alkyl, an aryl or an amino group; R.sup.4 is an alkyl or an aryl group or hydrogen; R.sup.5 is an alkyl, an aryl, a hydroxy, an alkoxy, an aryloxy, an acyl or an amino amino group; R.sup.6 is an alkyl, an aryl, an alkoxy, an aryloxy, a hydroxy or an amino group or hydrogen; x is 1, 2 or 3; and the benzene ring of the 1,2-dihydroxyphenyl-compound represented by the formula (I) may be further substituted.
Abstract translation:提供了基本上不受光照的黑白单色温度记录材料,其包括载体和含有基本上不光敏的有机银盐,与其热处理关系的1,2-二羟基苯基化合物和粘合剂的热敏元件,其中 1,2-二羟基苯基化合物由式(I)表示:当n为0时,其中R为-P(= O)R 1 R 2,-SO x R 3,-CN,-NO 2或-CR 4 = NR 5; 当n为整数时,R为-P(= O)R 1 R 2,-SO x R 3,-CN,-NO 2,-CR 4 = NR 5或-COR 6; R1和R2独立地是烷基,芳基,烷氧基,芳氧基,羟基或氨基; R3是烷基,芳基或氨基; R4是烷基或芳基或氢; R5是烷基,芳基,羟基,烷氧基,芳氧基,酰基或氨基氨基; R6是烷基,芳基,烷氧基,芳氧基,羟基或氨基或氢; x为1,2或3; 由式(I)表示的1,2-二羟基苯基化合物的苯环可以进一步被取代。
Abstract:
An assembly comprising a plurality of thermal heads (10), each thermal head comprising a linear array of resistor elements mounted on a flat substrate (17), and a drum (15) of diameter D mm for supporting a thermographic recording material, said thermal heads being mounted in a staggered fashion in at least two parallel rows (11,12) in which the linear arrays of resistor elements are parallel to one another, characterized in that:i) said resistor arrays of adjacent rows of thermal heads are separated by a spacing, d, greater than 0.2 mm; andii) said substrates of thermal heads in adjacent rows (17', 17") include an angle .THETA. comprised between arc sine (d/2D) and arc sine (2d/D);and a direct thermal printing process therewith.