Heat-sensitive recording material
AssigneeMitsubishi HiTec Paper Europe GmbH
InventorsNadia EL-KARZAZI, Claas BOXHAMMER
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Abstract
A heat-sensitive recording material including a substrate, a heat-sensitive recording layer which includes N-(4-methylphenylsulfonyl)-/V-(3-(4-methylphenylsulfonyloxy)pheny-purea and/or N42-(3-phenylureido)phenyl]benzol sulfonamide, and an intermediate layer which is arranged between the substrate and the heat-sensitive recording layer and which includes calcined aluminum silicate, and a method for producing a heat-sensitive recording material and to the use of calcined aluminum silicate in an intermediate layer of a heat-sensitive recording material.
Claims29
-28. (canceled)
A heat-sensitive recording material comprising:
- a substrate, which is a web-form substrate, having a front side and a reverse side opposite the front side;
- a heat-sensitive recording layer disposed to the front side of the web-form substrate, the heat-sensitive recording layer comprising:
- at least one dye precursor;
- and
- at least one color developer that is reactive with the at least one dye precursor and is
- a) a compound of a formula (I):
- or
- b) a compound of formula (II):
- or
- c) is a mixture comprising the compound of the formula (I) and the compound of the formula (II);
- an interlayer disposed between the substrate and the heat-sensitive recording layer and comprising calcined aluminum silicate;
- and
- a mass fraction of the calcined aluminum silicate in the interlayer being 50 to 90%, based on a total mass of a solids fractions in the interlayer.
A method for producing a heat-sensitive recording material, comprising:
- providing or producing a substrate comprising a front side and a reverse side disposed opposite to the front side;
- providing or producing a first coating composition, the first coating composition comprising calcined aluminum silicate;
- applying the first coating composition to the front side of the substrate;
- drying and/or crosslinking the applied first coating composition, to form at least one interlayer;
- providing or producing a second coating composition, the second coating composition comprising at least one dye precursor and at least one color developer which is reactive with this dye precursor and which
- a) is a compound of a formula (I):
- or
- b) is a compound of a formula (II):
- or
- c) is a mixture comprising the compound of the formula (I) and the compound of the formula (II);
- applying the second coating composition to the at least one interlayer;
- and
- drying and/or crosslinking the applied second coating composition, to give a heat-sensitive recording layer.
Calcined aluminum silicate in an interlayer of a heat-sensitive recording material, wherein the heat-sensitive recording material, besides the interlayer, comprises:
- a substrate, the substrate having a front side and a reverse side disposed opposite to the front side;
- and
- a heat-sensitive recording layer disposed to a front side of the substrate, the heat-sensitive recording layer comprising at least one dye precursor and at least one color developer which is reactive with the at least one dye precursor and which is
- a) a compound of a formula (I):
- or
- b) a compound of a formula (II):
- or
- c) is a mixture comprising the compound of the formula (I) and the compound of the formula (II);
- and
- wherein the interlayer is disposed between the substrate and the heat-sensitive recording layer, and
- wherein a mass fraction of the calcined aluminum silicate in the interlayer is 65 to 75%, based on a total mass of solids fractions in the interlayer.
Dependencies are inferred from the claim text.