Abstract: A thermosensitive recording element comprising in order (a) a support, (b) at least one thermal layer comprising an organic polymeric binder, a substantially colorless electron donating dye precursor and an electron accepting compound capable of forming color by reacting with said dye precursor, and (c) a layer comprising a non-binder containing solution of a crosslinking agent wherein said agent forms a diol or ether-type bond with the binder is described. These elements have wide application in the printing industry.

Abstract: A thermosensitive recording material having a high resistance to curling and cockling when colored images are developed thereon comprises a substrate sheet comprising a thermoplastic resin and having a thermal shrinkage of 1.0% to 2.0% at a temperature of 120.degree. C.; a thermosensitive colored image-forming layer formed on a surface of the substrate sheet and comprising a colorless dye precursor, a color-developing agent and a binder; a backcoat layer formed on the opposite surface of the substrate sheet, having a weight of 1 to 10 g/m.sup.2 and comprising 20 to 90 parts by weight of a water-soluble polymeric material 10 to 80 parts by weight of a water-isoluble polymeric material and 1 to 10 parts by weight of a cross-linking agent for the water-soluble polymeric material; and optionally, an overcoat layer formed on the thermosensitive colored image-forming layer and comprising a pigment and binder resin.

Abstract: A delaminating coating for use in a thermal transfer system is provided that possesses both delaminating properties and antistatic properties. This delaminating coating can be used on a donor sheet or an intermediate carrying sheet of a thermal retransfer system. The preferred delaminating/antistatic coating is formed from a composition of a vanadium oxide colloidal dispersion.

Abstract: Printing substrate materials (e.g., paper, cardboard, card stock, label stock, facsimile paper, thermally sensitive record materials, plastic film, et cetera . . . ) having at least one layer of an air dryable ultraviolet protective primer formed thereon. One or more layers of topcoat, such as a radiation curable topcoat, may be applied over top of the primer of the present invention to form a complete primer/topcoat system on the substrate material.

Abstract: A double-surface heat-sensitive record material is disclosed that provides separable, thermally printed surfaces. The invention includes a first heat-sensitive record surface having an exposed heat-sensitive record layer on one surface, a pressure-sensitive adhesive layer, and release liner on an opposed surface. A second heat-sensitive record surface includes a second heat-sensitive record layer on an exposed surface. This second record surface is secured to the first record surface, by a binder layer, to form a double-surface heat-sensitive record material having opposed, exposed heat-sensitive record layers. A thermal imager or printer can then print on both exposed heat-sensitive record layers. The release liner enables the two record layers to be separated, forming first and second printed surfaces, wherein the first printed surface has an exposed pressure-sensitive adhesive layer so that it can be readily used as a label, while the second printed surface may be used as a receipt.

Abstract: A rewritable recording medium which can perform multi-color recording is provided. The recording medium comprises an optical absorption layer and an optically selective absorption layer sequentially stacked on a substrate, wherein the optically selective absorption layer includes a plurality of colored segments and a reversible thermosensitive recording matrix in contact with the colored segments, the reversible thermosensitive recording matrix being formed so as to cover the colored segments and so as to come in contact with the optical absorption layer, and changing in light transmittance in a reversible manner by application of heat.

Abstract: A pressure sensitive carbonless copying system includes a first sheet having front and back surfaces, the back surface coated at least in part with a composition including a mixture having a pressure sensitive adhesive component and a carbonless microcapsule component; and a second sheet having front and back surfaces, the front surface coated with a carbonless image transfer material, and wherein the first sheet is temporarily adhered to the second sheet by means of the pressure sensitive adhesive component of the mixture.

Abstract: A thermochromic laminate member capable of reversible change from a metallic luster color to a colorless state, comprises a first layer for regulating the wavelength of reflected light, composed of a metal luster pigment, which consists of natural mica surfacially covered with titanium oxide and has a grain size of 5 to 100 .mu.m, and a film forming material; anda second layer composed of a thermochromic material, which consists of an electron donating compound, an electron accepting compound, and an organic medium enabling a reversible color-forming reaction between said compounds and has a luminocity value of 6 or lower in the colored state and a luminocity value of 8 or higher in the colorless state, and a film forming material.

Abstract: A thermal recording sheet provided with a thermal color developing layer containing colorless or pale colored basic chromogenic dye, a color developer of Formula (I) and at least one of o-xylylene-bis-(phenylether) and 4-(m-methylphenoxymethyl) bisphenyl as a sensitizer. ##STR1## (wherein R is propyl, isopropyl, or butyl.

Abstract: An imaging medium capable of being imaged to form a transparency comprises a substantially transparent support having a thickness of at least about 20 .mu.m, a color-forming layer superposed on the support and comprising a color-forming composition adapted to undergo a change of color upon increase in the temperature of the color-forming layer above a color-forming temperature for a color-forming time; and a bubble-suppressant layer superposed on the color-forming layer and having a thickness of at least about 10 .mu.m. Upon imagewise increase in the temperature of the color-forming layer above the color-forming temperature for the color-forming time, in heated regions the color-forming layer undergoes its change of color but remains essentially free from bubbles, thereby providing an image in which the colored regions are not blackened when viewed in transmission.

Abstract: Utilizing just five different types of sheets, multipart carbonless business forms may be printed with non-impact printers and then assembled together without using line hole punched sheets and intermediate parts. The CB sheets have an adhesive strip (continuous or discontinuous) on the CB face spaced a first distance from a sheet edge. There are first and second CF sheets, the first CF sheets having an adhesive strip (preferably linear, and continuous or discontinuous) on the CF face spaced a first distance from an edge, and the second CF sheets having an adhesive strip on the CF face thereof spaced a second distance from the edge. First and second CFB sheets are provided, the first CFB sheets having an adhesive strip on the CF face spaced the first distance, and an adhesive line on the CB face spaced the second distance; and the second CFB sheets having the adhesive strips vice-versa. The sheets are fed, in order, from trays of a non-impact (e.g.

Abstract: A coating composition for use in carbonless copying systems including (1) a resin dispersion which is a phenol/aldehyde condensation product formed by the interaction of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde and a metal source; (2) a binder; and (3) a pigment. This coating composition provides faster imaging in carbonless systems than conventional coatings, at temperatures below room temperature.

Abstract: Compounds of formula ##STR1## wherein R, L, X and Y are as defined in claim 1, are very suitable for use as UV absorbers in pressure-sensitive or heat-sensitive recording materials.

Abstract: The invention provides a recording material inhibited from alteration which comprises a substrate, an undercoat layer containing a white or light colored inorganic fluorescent pigment having an emission maximum wavelength of 400-700 nm and provided on one side of the substrate, and a recording layer provided on said undercoat layer. The recording layer may be a heat-sensitive layer or a pressure-sensitive layer. A magnetic recording layer comprising ferromagnetic powders may be provided on another side of the substrate.

Abstract: A negative-acting, photothermographic material having a first layer comprising an amine compound and a second layer comprising an amine-reactive dye which undergoes a visible change when in reactive association with the amine compound. The amine compound and the amine-sensitive dye are in non-reactive association at ambient and moderate temperatures, but at elevated temperatures the two components are able to interact to produce a visible change in the heated areas of the material. The materials are particularly suitable for the preparation of overhead projector transparencies.

Abstract: A rewritable bar code display medium is disclosed, which is composed of a support and a reversible thermosensitive recording layer for reversibly forming bar codes therein formed on the support, which reversible thermosensitive recording layer varies in transparency with change in temperature, and an image display method using the rewritable bar code display medium, and an apparatus for implementing the image display method are also disclosed.

Abstract: A reversible thermosensitive coloring composition is composed of (i) an electron-donor coloring compound and (ii) an electron-acceptor compound selected from the group consisting of an organic phosphoric acid compound, an aliphatic carboxylic acid, and a phenolic compound, each having a straight chain or branched chain alkyl group or alkenyl group having 12 or more carbon atoms, the electron-donor coloring compound and the electron-acceptor compound being capable of reacting to induce color formation in the reversible thermosensitive coloring composition at the eutectic temperature thereof. The electron-donor coloring compound and the electron-acceptor compound, when fused and colored in a mixed state, with application of heat thereto, followed by rapidly cooling the fused mixture, exhibit an exothermic peak in a temperature elevation process in a differential scanning calorific anlaysis or in a differential thermal analysis.

Abstract: A thermal printing medium comprisinga substrate having an upper and lower surface;a heat sensitive layer formed over at least one surface of said substrate and including at least one of a colorless and a lightly colored leuco dye, and a color developing agent which imparts color to said leuco dye; anda protective layer comprised of aqueous resin and filler agent as main components thereof;characterized in that said heat sensitive layer is comprising at least one compound indicated by formula (1) ##STR1## (wherein R indicates an alkyl group having 1 to 10 carbon atoms or a benzyl group which may have a substitutional group) as a color developing agent, and aluminum hydroxide.

Abstract: A thermal recording medium good in recording sensitivity and recording stability comprising a metal thin layer, a heat sensitive softening layer placed in contact with said metal thin layer, a contrasting layer placed in contact with said heat sensitive softening layer or said metal thin layer and having a visual contrast to said metal thin layer, and a heat sensitive color forming layer placed in contact with said heat sensitive softening layer or said metal thin layer on the side of said metal thin layer opposite to the side where the contrasting layer is positioned.

Abstract: Thermosensitive linerless labels (either thermal labels or thermal transfer labels) which can be used with food products contain a pressure sensitive adhesive covering one face of a substrate having a thermosensitive layer on the opposite face, and a release coat covering the thermosensitive layer. The release coating is preferably applied directly to the thermosensitive layer, and preferably is prepared by application and then drying of a formulation containing between about 5-25 parts chromium pentahydroxy (tetradecanoato) di-, and about 75-95% water or alcohol. Alternatively, the release coating may be a UV curable silicone with about 1-3% by weight photoinitiator. After the coatings are applied, the stock is dried in a manner that will not adversely affect the thermosensitive layer, e.g. by ultraviolet rays, or air drying at a temperature of less than 150.degree. F. A web comprising the substrate may be slit into individual rolls, and perfing or die cutting is practiced to form individual labels.

Abstract: The present invention relates to a heat-sensitive recording medium which is excellent in dot-reproducibility and in adhesion between a support and a heat-sensitive recording layer provided thereon. The present recording medium comprises a synthetic-resin support, an ionomer-resin layer on the support, and a heat-sensitive recording layer provided on the ionomer-resin layer.

Abstract: A heat-sensitive recording material comprising a support having thereon a color-developing layer and at least one UV-absorbing layer with a light-transmittance of 70% or less at 400 nm, 5% or less at 370 nm, and 70% or more for entire visible light range, is disclosed.

Abstract: A two sided thermal printing system includes a sheet which is specially coated on both sides for two sided thermal printing. A first side of the sheet has a dye receiving first coating for heat flowable dye transfer thermal printing via a dye bearing web in a transfer printing step. An opposing second side of the sheet has a second coating containing a heat activated dye material for forming, in situ, a dye image by direct thermal printing in an in situ printing step. The sheet portion, exclusive of the second coating, has a sufficient thickness and thermal resistance for inhibiting heat transfer therethrough during the transfer printing step on the first side to prevent activation of the dye material in the second coating on the second side.

Abstract: The upper surface of an upper sheet for a carbon copy system made of pressure-sensitive self-copying paper has a layer, designed to be printed on, made of pigment, binder and water-repelling agent, to increase the opacity and control the bonding properties for ease of sheet detachment.

Abstract: An upper thermo-sensitive paper is coated with an adhesive agent on a part of the rear surface thereof, and a lower thermo-sensitive paper is coated with a release agent on the upper surface thereof at the area corresponding to the adhesive agent coated area of said upper thermo-sensitive paper. The upper thermo-sensitive paper is laid on and adhered to the lower thermo-sensitive paper. By separating the upper thermo-sensitive paper from the lower thermo-sensitive paper at the boundary plane between the adhesive agent layer and the release agent layer, the upper thermo-sensitive paper can be used as a tack paper and the lower thermo-sensitive paper can be used as a copying paper.

Abstract: A self-contained imaging sheet comprising in order:(a) a support;(b) a first layer comprising photosensitive microcapsules having an internal phase, said internal phase comprising an image forming agent and a photosensitive composition which undergoes a physical transformation in response to exposure to actinic radiation;(c) a second layer comprising a developer material; and preferably(d) a third layer comprising an adhesive forming component, said self-contained imaging sheet being useful in forming images on plain paper by a process which comprises imagewise exposing said imaging sheet to actinic radiation, forming an image on said developer material, transferring the image bearing developer layer to said plain paper, and separating said imaging sheet from said plain paper, wherein said image bearing developer layer remains adhered to said plain paper and said microcapsule layer remains adhered to said support.

Abstract: A reversible thermosensitive recording material is composed of a support and a reversible thermosensitive recording layer formed thereon. The reversible thermosensitive recording layer is composed of a matrix resin, such as polyvinyl chloride or vinyl chloride copolymer, and an organic low-molecular-weight material dispersed in the form of finely-divided particles in the matrix resin, with the weight percentage Y of the vinyl chloride repeat in the matrix resin and the average polymerization degree X of the matrix resin satisfying the relationship:-0.68 log X+3.794.ltoreq.log Y.ltoreq.-0.215 log X+2.66.

Abstract: This invention relates to the use of a compound containing at least two epoxide moieties in the protective topcoat layer and/or in a layer on top of the protective topcoat layer of certain thermographic recording films to reduce gouging and streaking of the printed image film and to reduce head build-up on the thermal printhead.

Abstract: A reversible thermosensitive recording material composed of a support, an undercoat layer formed on the support, and a reversible thermosensitive recording layer formed on the undercoat layer, capable of reversibly assuming a transparent state and a white opaque state depending on the temperature thereof, the undercoat layer having at least one colored portion and at least one light reflecting portion.

Abstract: The present invention provides a heat sensitive recording material comprising a heat sensitive recording layer formed on a substrate and containing a color former and a color developer reactive with the color former, an intermediate layer formed on the recording layer and containing a water-soluble resin or water-dispersible resin, and an overcoat layer formed on the intermediate layer and containing a resin curable with an ionizing radiation, the heat sensitive recording material being characterized in that the color developer comprises at least one of a salicylic acid derivative represented by the following formula (1) or formula (2) and polyvalent metal salt of the derivative ##STR1## wherein Ar, Q, A, R, X, Y, m and n are defined in the specification.

Abstract: The present invention provides a heat sensitive recording material comprising a substrate, a recording layer formed over the substrate and containing a colorless or light-colored basic dye and a color acceptor, and a protective layer formed over the recording layer, the recording material being characterized in that microcapsules having an ultraviolet absorber enclosed therein and having substantially no color forming ability are incorporated in the protective layer.Further, the present invention provides microcapsules having an ultraviolet absorber and as required an organic solvent enclosed therein, which have capsule wall film of synthetic resin and mean particle size of 0.1 to 3 .mu.m.

Abstract: A recording material comprising a thermosensitive recording layer (B) or a thermal dye transfer type image receiving layer (B') laminated on a surface layer (b) of a support (A), wherein the support (A) comprises the surface layer (b) comprising a uniaxially stretched thermoplastic resin film laminated onto a base layer (a), wherein the base layer (a) comprises a biaxially stretched film of a thermoplastic resin containing 10 to 45% by weight of an inorganic fine powder, and wherein said support (A) satisfies conditions (1) to (3):(1) the surface layer (b) of the support (A) comprises at least two layers: an outer layer (b.sup.1) comprising a uniaxially stretched film of a thermoplastic resin containing 0 to 30% by weight of an inorganic fine powder; and an inner layer (b.sup.2) comprising a uniaxially stretched film of a thermoplastic resin containing 30 to 80% by weight of an inorganic fine powder, wherein the thickness of the outer layer (b.sup.

Abstract: Disclosed is a method and material for producing and developing thermal latent images. Upon imagewise thermal exposure of a heat sensitive recording material, the recording material selectively yields both a latent image and a visually readable image. The latent image may comprise confidential data or text, and may subsequently be rendered visually readable by an authorized recipient.

Abstract: An information memory and display medium comprising: (a) a support, (b) a magnetic recording layer formed on the support, (c) a thermosensitive recording layer formed on the magnetic recording layer, which comprises (i) a light reflection layer formed on the magnetic recording layer, and (ii) a reversible thermosensitive recording layer formed on the light reflection layer, comprising a matrix resin, and one or more organic low-molecular-weight compounds dispersed in the matrix resin, with the transparency thereof being reversibly changeable between a transparent state and an opaque state depending upon the temperature thereof, thereby capable of yielding thermally erasable images. The thermosensitive recording layer may further comprise a smoothing layer between the magnetic recording layer and the light reflection layer, and/or an overcoat layer on the reversible thermosensitive recording layer.

Abstract: A heat-sensitive recording material excelled in surface gloss and printing concentration is disclosed.The disclosed heat-sensitive recording material with a heat-sensitive color-developing layer formed on a supporting member features provision on the surface of the heat-sensitive color-developing layer of a protective coating containing crosslinked microfine particles (B) having substantially no glass transition temperature, 0.5 .mu.m or less in mean particle size and 0.05 or less in the difference in refractive index from the solid content of aqueous resin despersion which are obtainable by emulsion-polymerizing vinyl-containing monomers containing 15 weight % or more of polymeric multifunctional monomers together with the aqueous resin dispersion (A).

Abstract: Carbonless coating compositions which can be printed onto one or more sheets of a business form or mailer to provide a visible image which is sharper and darker than previous coatings are provided. The compositions also find use on security documents and safety papers to provide a covert image on the document beneath information which may be subject to attempted alteration, such as the amount written on a check. The covert image becomes visible upon the application of pressure or solvent in the area coated to provide evidence of the attempted alteration. The self-contained composition includes an admixture of a color former, a color developer, and a plurality of pressure-rupturable microcapsules containing a solvent. Another solvent-sensitive composition includes an admixture of a color former and a color developer.

Abstract: A thermosensitive recording material having a support and a thermosensitive coloring layer formed on the support, which thermosensitive coloring layer includes at least a first thermosensitive coloring layer containing at least one leuco dye having formula (I), (II) or (III) and a color developer capable of inducing color formation in the leuco dye under application of heat thereto, and a second thermosensitive coloring layer containing at least one leuco dye having formula (IV) and a color developer capable of inducing color formation in the leuco dye under application of heat thereto. The leuco dye for use in the first thermosensitive coloring layer has the absorption intensity in the near infrared region, and the leuco dye for use in the second thermosensitive coloring layer has the absorption intensity in the visible spectrum.

Abstract: An improved pressure sensitive recording sheet capable of causing an improved color development which comprises a substrate and a layer containing microcapsules each containing an electron-donative chromogenic material and a hydrophobic medium containing benzyl toluene being formed on the substrate.The pressure sensitive recording sheet exhibits an excellent color-developing property and provides clear color images of high density.

Abstract: The heat-sensitive recording material is prepared by forming on a support successively a heat-sensitive recording layer containing a color former and a color developer which forms a color by reacting with the color former, an intermediate layer obtained by coating an aqueous solution or aqueous dispersion of a resin, and an overcoat layer containing a ionizing radiation curable resin, and then irradiating an ionizing radiation. The overcoat layer contains a silicone surface active agent and a low molecular weight polyolefin resin microball. The heat-sensitive recording material is excellent in recording runnability and printability as well as in color density of the recorded images and image-retainability.

Abstract: A heat-sensitive recording material having an improved color image-forming property and an enhanced gloss and resistance to water, oily substances and plasticizers, is provided with a heat-sensitive color-forming layer formed on a substrate surface and comprising a substantially colorless dye precursor, a color-developing agent and a binder; an intermediate layer formed on the color-forming layer and comprising a hydrophilic polymeric material and a pigment; a glossy surface layer formed on the intermediate layer and comprising a hydrophobic polymeric material having a glass transition point of 60.degree. C. or more, and a lubricant; and optionally, an additional intermediate layer formed between the color-forming layer and the intermediate layer and comprising at least one member selected from hydrophilic polymeric materials and hydrophobic polymeric materials.

Abstract: Leuco dyes are provided which comprise the coupling product of a N-acyl substituted aromatic amino color developer and a dye-forming coupler moiety substituted at the coupling carbon with a thermally removable leaving group. Thermal imaging systems employing these leuco dyes have the advantage of reduced bubble formation relative to thermal imaging systems employing prior art leuco dyes containing a group which thermally fragments into one or more gases.

Abstract: A thermosensitive recording material is composed of a support, an undercoat layer formed on the support, which is essentially composed of spherical-void plastic particles having an average particle diameter of 2 to 20 .mu.m and a voidage of 80% or more, and a thermosensitive coloring layer formed on the undercoat layer, which contains a leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of heat thereto.

Abstract: A thermosensitive recording material is composed of a support, a thermosensitive coloring layer capable of inducing color formation upon application of heat thereto, formed on the support, and an overcoat layer formed on the thermosensitive coloring layer, the overcoat layer being essentially composed of a resin component which is crosslinked by a glycidylamine compound serving as a crosslinking agent for the resin component. A coating liquid for the formation of the overcoat layer is essentially composed of the resin component and the glycidylamine compound.

Abstract: Disclosed is a carbonless paper set having at least two sheets, wherein a first sheet comprises paper coated on one surface with a color former and a second sheet comprises paper coated on one surface with a color developer, and wherein at least one of the sheets contains an oleophilic pigment filler material on the surface of the sheet opposite to that coated with the color former or color developer.

Abstract: A reversible thermosensitive recording material is composed of a support, and a reversible thermosensitive recording layer formed thereon, having a reversible temperature-dependent transparency, which contains a matrix resin and an organic low-molecular-weight material. The organic low-molecular-weight material is in the form of particles, and substantially covered by the matrix resin, and the content thereof in the reversible thermosensitive recording layer is increased from the surface side thereof toward the support side. This reversible thermosensitive recording material can be prepared by a method of coating a solution or dispersion of the matrix resin and the organic low-molecular-weight material on the support, which are dissolved or dispersed in a mixed solvent composed of at least two solvents, each having a different vapor pressure, and drying the solution or dispersion.

Abstract: This invention relates to a heat-sensitive recording material. More particularly, this invention relates to a heat-sensitive recording material including a solvent-resistant and friction-reducing protective layer useful in the manufacture of adhesive-backed heat-sensitive labels and other thermally sensitive paper stock used in printers and facsimile equipment. The protective layer is non-acidic and has an improved resistance to background discoloration.

Abstract: An image transfer type recording method and kits for forming images on a receiving medium stably adheres a developer layer to any type of image receiving medium, such as, for example, plain paper, cloths, plastic films or the like. According to an image transfer type recording method, the image formation layer and the image receiving medium are adhered to each other by an adhesive layer. Therefore, the image formation layer can be stably adhered to any type of image receiving medium The image formation layer is adhered to the image receiving medium while being sandwiched between a thermoplastic resin layer and the adhesive layer. Therefore, the color of the image formed on the image formation layer is not faded or reduced in brightness, even if the image is formed on media made from cloth and such media on which the image is formed is washed.

Abstract: A heat-sensitive recording material wherein a copolymer emulsion is employed, the copolymer emulsion being obtained by copolymerizing a monomer component which comprises (meth)acrylamide and an optional unsaturated monomer component copolymerizable with (meth)acrylamide in the presence of a seed emulsion serving as a nucleating particle. In the heat-sensitive recording material, the intermediate layer, the heat-sensitive recording layer or the protective layer comprises the copolymer emulsion. The recordinq layer and the resulting recorded images of such a heat-sensitive recording material have sufficient durability (such as water resistance, heat resistance, resistance to plasticizers and resistance to solvents) and the resistance to heat softening of the protective layer. The heat-sensitive recording material can be produced through easy process control and is excellent in color developing sensitivity.

Abstract: A heat-sensitive recording sheet of this invention comprises in a heat-sensitive color-developing layer both bis(4-hydroxyphenyl)butylacetate as an organic color-developing agent and a particular fluorane-leuco dye. This sheet provides an intense clear image less discoloration and superior heat-resistant preservability.

Abstract: A coated resin film having excellent offset printability is described, which comprises a polyolefin resin film base material layer having formed on both the surfaces thereof a solvent permeation preventing layer for preventing the permeation of a solvent in offset printing ink compositions and further having formed on one or both the surfaces of the solvent permeation preventing layers a coating agent layer.