Abstract:
The present invention discloses a thermal imaging process using (i) a donor element comprising on a support a donor layer containing a binder and a thermotransferable reducing agent capable of reducing a silver source to metallic silver upon heating and (ii) a receiving element comprising on a support in the order given a receiving layer and a curable layer, said receiving layer comprising a silver source capable of being reduced by means of heat in the presence of a reducing agent for said silver source and a binder, said thermal imaging process comprising the steps ofbringing said donor layer of said donor element into face to face relationship with said receiving layer of said receiving element,image-wise heating a thus obtained assemblage, thereby causing image-wise transfer of an amount of said thermotransferable reducing agent to said receiving element in accordance with the amount of heat supplied,separating said donor element from said receiving element,curing said release layer andoverall heating said receiving element.
Abstract:
Cleaning method for a thermal head used in thermal transfer printers, wherein said cleaning method uses a cleaning solution comprising at least one organic solvent having in pure state a vapour pressure above 25 mbar at 20.degree. C. and a lubricant selected from the group consisting of paraffins, polyolefin waxes, fluor compounds, phosphate compounds, phosphonate compounds, polysiloxanes, fatty acids, fatty acid esters, fatty alcohols, fatty acid amides, fatty acids salts and polyalkyleneoxides.
Abstract:
A substantially light-insensitive monosheet thermographic recording material comprising a support and on one side of said support a thermosensitive element, wherein said thermographic recording material contains at least one compound represented by formula (I): wherein M is hydrogen, an alkali atom or an ammonium group; R1 is an alkyl, alkenyl-, alkynyl-, thioalkyl-, thioalkenyl- or thioalkynyl-group in which the alkyl-, alkenyl- or alkynyl-group has 6 to 25 carbon atoms; X is —O—, —S— or —N(R2)—; and R2 is hydrogen, a —(CH2)mSO3M group or a group; and m is an integer between 1 and 5.
Abstract:
A substantially light-insensitive monosheet thermographic recording material comprising a support and on one side of said support a thermosensitive element, wherein said thermographic recording material contains at least one compound represented by formula (I): wherein M is hydrogen, an alkali atom or an ammonium group; R1 is an alkyl, alkenyl-, alkynyl-, thioalkyl-, thioalkenyl- or thioalkynyl-group in which the alkyl-, alkenyl- or alkynyl-group has 6 to 25 carbon atoms; X is —O—, —S— or —N(R2)—; and R2 is hydrogen, a —(CH2)mSO3M group or a group; and m is an integer between 1 and 5.
Abstract:
A substantially light-insensitive black and white thermographic recording material having a support and a thermosensitive element containing a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, characterized in that the thermosensitive element contains substantially light-insensitive mixed crystals of two or more silver salts of organic carboxylic acids with one or more carboxylic acid groups; and a recording process therewith.
Abstract:
A recording material comprising a support, a thermosensitive element and a protective layer therefor, the thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent therefor in thermal working relationship therewith and a binder, wherein the thermosensitive element further comprises in reactive association with the substantially light-insensitive organic silver salt and the organic reducing agent a substituted, exclusive of groups having an exclusively electron withdrawing character, or unsubstituted compound with an unsaturated 5-membered heterocyclic ring annulated with an aromatic ring system, the ring consisting of nitrogen and carbon atoms with at least one of the nitrogen atoms having a hydrogen atom and none of the carbon atoms being directly linked to a sulfur atom or being part of a carbonyl-group; a production process therefor and a thermal image recording process utilizing the recording material.
Abstract:
There is provided a method for preparing a biaxially oriented polyester sheet or web, with improved antistatic properties, comprising the steps of(i) stretching said polyester sheet or web first in one direction and second in a direction perpendicular thereto(ii) coating said hydrophobic polyester sheet or web, either before stretching or between said first and second stretching operation, on one or both sides, with a transparent antistatic primer layer, wherein the coating composition of said transparent antistatic primer layer comprises (1) a dispersion of a polythiophene with conjugated polymer backbone and a polymeric polyanion compound and (2) a latex polymer having hydrophilic functionality.The primer layer is coated from an aqueous composition and does not show a substantial change in resistivity depending on relative humidity or wet processing.
Abstract:
Dye-donor element for use according to thermal dye transfer methods comprising a support having on one side a dye layer and on the other side a heat-resistant layer comprising a binder and inorganic silicate particles, wherein said inorganic silicate particles protrude from the surface of said heat-resistant layer and said binder comprises a polycarbonate derived from a bis-(hydroxyphenyl)-cycloalkane.
Abstract:
Dye-donor element for use according to thermal dye sublimation transfer, said dye-donor element comprising a support having on one side a dye layer and on the other side a heat-resistant layer provided with a topcoat layer, wherein said heat-resistant layer comprises an organic polymeric binder and the topcoat layer is obtained by coating a solution of at least one silicone compound and a substance, capable of forming during the coating procedure a polymer having an inorganic backbone which is an oxide of a group IVa or IVb element.
Abstract:
A monosheet black and white substantially light-insensitive thermographic recording material comprising a thermosensitive element and a support, the thermosensitive element containing a substantially light-insensitive organic silver salt, a 1,2-dihydroxyphenyl-compound in thermal working relationship therewith and a binder, wherein said 1,2-dihydroxyphenyl-compound is represented by formula (I): R1SO2R2, wherein R1 is an optionally substituted aryl group and R2 is selected from the group consisting of a 3,4,5-trihydroxyphenyl group, a 3-alkoxy-4,5-dihydroxyphenyl group and a 3-aryloxy-4,5-dihydroxyphenyl group; or said 1,2-dihydroxyphenyl-compound is represented by formula (II): R3COOR4, wherein R3 is a 3-alkoxy-4,5-dihydroxyphenyl group or a 3-aryloxy-4,5-dihydroxyphenyl group; and R4 is an alkyl group or an aryl group; and a thermographic recording process therefor.
Abstract translation:包含热敏元件和载体的单片黑色和白色基本上不光敏感的热敏成像记录材料,所述热敏元件含有基本上不光敏的有机银盐,与其热处理的1,2-二羟基苯基化合物和粘合剂, 其中所述1,2-二羟基苯基化合物由式(I)表示:R 1 SO 2 R 2,其中R 1是任选取代的芳基,R 2选自 3,4,5-三羟基苯基,3-烷氧基-4,5-二羟基苯基和3-芳氧基-4,5-二羟基苯基; 或所述1,2-二羟基苯基化合物由式(II)表示:R 3 COOR 4,其中R 3为3-烷氧基-4,5-二羟基苯基或3-芳氧基-4 ,5-二羟基苯基; 和R 4是烷基或芳基; 及其热成像记录方法。