Abstract: A fingerprint image generating method and a fingerprint image recording sheet are provided which can take a clear fingerprint image easily and efficiently, without the process of wiping seal ink, with less chance to generate an unclear fingerprint image even in improper operation. A solution containing an electron-donating dye precursor is applied to a fingerprint face of a fingertip and then the fingertip is pressed against a recording film to which an electron-accepting color developer is applied. The electron-accepting color developer adsorbs the electron-accepting dye precursor to occur a coloring reaction on the recording film. The fingerprint image recording sheet includes a fingerprint image recording portion applying the electron-accepting color developer thereto and the electron-donating dye precursor applied portion to which the solution of the electron-donating dye precursor is applied.

Abstract: Disclosed is a heat-sensitive recording material in which a heat-sensitive recording layer which thermally forms a color is directly or indirectly formed on a substrate, the heat-sensitive recording layer being present between two oxygen-barrier layers each of which has a basis weight of 2 to 20 g/m.sup.2, the oxygen-barrier layers being formed of a polymer substance having an oxygen permeability constant of 0.5.times.10.sup.-10 cm.sup.3 .multidot.cm/cm.sup.2 .multidot.sec.multidot.cmHg or less. The heat-sensitive recording has excellent light resistance in non-printed portion thereof.

Abstract: A microcapsule-containing oil-based coating liquid wherein the coating liquid comprises a hydrophobic core material-containing microcapsule particles dispersed individually in a state of primary particle in an oil varnish for ink use or a resin for coating use, and a solvent having an affinity for both the varnish or the resin and the surface of the microcapsule wall material in a state of having been attracted with the affinity to both the varnish or the resin and the surface layer of the microcapsule wall material. The preferred solvent is a lower divalent or multivalent alcohol.A preparative method of the foregoing coating liquid by utilizing vacuum distillation is also proposed.A sheet, like a duplicating sheet of paper coated with the foregoing oil-based coating liquid is further provided.According to the present invention, a water-based microcapsules system can be advantageously converted into an oil-based one without coagulating the primary microcapsule particles.

Abstract: A thermosensitive recording material having high transmittance density, excellent reproducibility of fine dot images and half tone images under printing conditions ranging from low to high applied printing energy.The thermosensitive recording material, including a substrate and a thermosensitive coloring layer, formed on the substrate, the thermosensitive coloring layer including a leuco dye, a coloring developer for inducing color formation in the leuco dye upon application of heat thereto and binder resins, and an optional protective layer, formed on the thermosensitive coloring layer, wherein the binder resins include at least two resins having different glass transition temperature Tg and are present in total amount of more than about 0.25 parts by weight per 1 part of total weight of the thermosensitive coloring layer.

Abstract: The heat sensitive recording material of the present invention has, between a support and a heat sensitive recording layer, an intermediate layer having a tensile modulus of elasticity of from 1.times.10.sup.8 to 1.times.10.sup.10 dyne/cm.sup.2) as measured according to JIS K 7127. The heat sensitive recording material of the present invention is suitable to prevention of abrasion of a thermal head and prevention of sticking of the heat sensitive recording material to the thermal head.

Abstract: A reversible thermosensitive recording medium includes a support material; a thermosensitive recording layer whose transparency is reversibly changeable depending upon the temperature thereof, which is provided on the support material and includes a low-molecular-weight organic compound and a resin matrix in which the organic low-molecular-weight compound is dispersed; and an overcoat layer provided on the thermosensitive recording layer, the overcoat layer having a pencil hardness of 1H or more and including at the surface thereof at least three protrusions with a height of 0.05 .mu.m or more per area of 125 .mu.m.times.125 .mu.m of the surface of the overcoat layer.

Abstract: A latent image printing method and apparatus uses a substrate with one main surface having a covering comprising one of a first pair of a color developer and color former dye defining a background color in conjunction with the one main surface, wherein the color developer and the color former dye react when mixed to produce a first spectral response which is visible relative to the background color and a continuous coating over the covering which is non-porous with respect to the other of the pair and solvent-resistant to the other of the pair. The coating above selected portions of the covering corresponding to a desired latent image is removed.

Abstract: A thermal sensitive label, and method of manufacture, provide a label construction which is resistant to abrasion without requiring additional coatings. A substantially transparent synthetic material substrate (typically about 1-3 mils thick, but no more than 5 mils thick) has a thermally sensitive coating applied to a first face so that when heat is applied to the second face an image will form on the thermally sensitive material and it will be readable from the second face without significant distortion. A pressure sensitive adhesive, which is preferably pigmented, is disposed on the thermally sensitive material, and may be covered with a release liner. Alternatively, an adhesive release material may be applied on the second face of the substrate.

Abstract: A thermosensitive recording medium, having a support, an intermediate layer disposed thereon, and a thermal recording layer disposed on the intermediate layer, with the support being a plastic film or a synthetic paper having a thickness of less than or equal to 150 .mu.m, and the intermediate layer containing hollow particles having a volume ratio of hollow particle to total intermediate layer material of greater than or equal to 20% and having a thermal conductivity of the intermediate layer together with the support of less than or equal to 0.55 kcal/mh.degree.C. is provided which has improved properties such as reduced paper curl, excellent dot print reproducibility and sufficient adhesion between layers, and which is conveniently used in a wide variety of information recording applications.

Abstract: A liner-less thermosensitive recording material having a substrate, a thermosensitive coloring layer formed on one side of the substrate, a thermosensitive adhesive layer which is formed on the other side of the substrate and becomes adhesive when activated, while being non-adhesive in a normal state, an optional protective layer formed on the thermosensitive coloring layer, and perforation which is formed perpendicular to the longitudinal direction of the liner-less thermosensitive recording material, wherein length of a non-cut part of the perforation is smaller than about 1.5 mm and a ratio of total length of cut parts to total length of the non-cut parts in the perforation is at least 2.

Abstract: A recording material comprising at least one thermosensitive element, comprising a substantially light-insensitive organic silver salt and an organic reducing agent therefor in thermal working relationship therewith, on a support, characterized in that an outermost layer of said recording material comprises at least one solid lubricant having a melting point below 150.degree. C. and at least one liquid lubricant in a binder, wherein at least one of said lubricants is a phosphoric acid derivative. The outermost layer of the recording material in contact with the heat source during the thermal image forming process may be the outermost layer of the thermosensitive element, a protective layer applied to the thermosensitive element or a layer on the opposite side of the support to the thermosensitive element.

Abstract: This invention pertains to a carbonless copying system for making multiple copies of a message, comprising a plurality of carbonless paper sheets of which each sheet of carbonless paper comprises a region of removable, repositionable pressure sensitive adhesive on the back surface of the sheet. The method for manufacturing the removable and repositionable pressure sensitive carbonless copying system and their use for making multiple copies of a message are also described.

Abstract: A heat-sensitive image recording material contains on a support material1. at least one binder layer with a heat-sensitive imaging combination of an organic silver salt and an organic reducing agent for the organic silver salt, and2. at least one binder layer or a sequence of binder layers with a heat-sensitive imaging combination of an acid-sensitive leuco dye and an acidically reacting compound which acts as a developer for the leuco dye,wherein the leuco dye and developer are in thermal interaction with each other either in different layers or separately from each other in the same layer, characterised in that a layer with a water- or alcohol-soluble polymer is arranged between the combination of organic silver salt and organic reducing agent for the organic silver salt, on the one hand, and the combination of leuco dye and acidically reacting compound, on the other.

Abstract: A (photo)thermographic recording material comprising a (photo-addressable) thermosensitive element, a support and an outermost antistatic layer, the thermosensitive element comprising a substantially light-insensitive organic silver salt, an organic reducing agent for the substantially light-insensitive organic silver salt in thermal working relationship therewith and a binder, characterized in that the outermost antistatic layer is an organic layer with a resistivity of <10.sup.10 .OMEGA./.quadrature. at a relative humidity of 30%. The outermost antistatic layer may comprise a polythiophene with conjugated polymer backbone in the presence of a polymeric polyanion compound and a hydrophobic organic polymer having a glass transition value (T.sub.g) of at least 40.degree. C., the polythiophene being present at a coverage of at least 0.001 g/m.sup.2 and the weight ratio of the polythiophene to the hydrophobic organic polymer being in the range of 1/10 to 1/1000.

Abstract: This invention provides a transparent thermal recording medium, in which the transparent thermal recording medium comprises: a thermal recording layer, which is provided on a transparent layer, consisting essentially of an electron-donating chromophoric compound, an electron-accepting compound and binder resin; and a further-provided protective layer having an approximately equal refractive index to the refractive index of the thermal recording layer, wherein the binder resin is a compound having a group selected from a hydroxyl group and a carboxyl group. The transparent thermal recording medium can be effectively used for a block copy film, on which an image is formed, for plate-making, particularly, in photogravure, offset printing and screen process printing, because the transparent thermal recording medium has a contrast of light transmission factors between a color-imaging portion and a non-imaging portion, in which the contrast is not less than 50% at a wavelength ranging from 370 nm to 450 nm.

Abstract: This invention provides a transparent thermal recording medium, in which the transparent thermal recording medium comprises: a thermal recording layer, which is provided on a transparent layer, consisting essentially of an electron-donating chromophoric compound, an electron-accepting compound and binder resin; and a further-provided protective layer having an approximately equal refractive index to the refractive index of the thermal recording layer, wherein the binder resin is a compound having a group selected from a hydroxyl group and a carboxyl group. The transparent thermal recording medium can be effectively used for a block copy film, on which an image is formed, for plate-making, particularly, in photogravure, offset printing and screen process printing, because the transparent thermal recording medium has a contrast of light transmission factors between a color-imaging portion and a non-imaging portion, in which the contrast is not less than 50% at a wavelength ranging from 370 nm to 450 nm.

Abstract: A thermal recording medium wherein ultraviolet absorbent is included in undercoat layer and/or in thermal sensitive color developing layer, ultraviolet isolator consisted of calcined particle which is flaky pigment whose refractive index is 1.5 to 1.6 and whose surface is coated with insoluble cerium compound and amorphous silica is included in thermal sensitive color developing layer and/or in protective layer, and fluorescent dye is included in protective layer.

Abstract: A coated front sheet useful in carbonless copy forms. The sheet has a moisture resistant coating of latex binder, color developer, and pigment in association with a substrate. The coating is formulated to permit formation of a legible image in use in the carbonless copy form, and to minimize the adverse effects of humid weather conditions. The substrate is resistant to degradation by moisture, and may be a moisture resistant polymer or paper impregnated with the moisture resistant coating.

Abstract: A thermosensitive recording medium including a support, and at least one layer provided on the support, wherein one of the at least one layer is a thermosensitive layer capable of forming a color image when heated imagewise, and one of the at least one layer contains a zinc dithiocarbamate of the formula: ##STR1## wherein R.sup.1 and R.sup.2 stand independently from each other for an alkyl group having 1-4 carbon atoms or a phenyl group. The zinc dithiocarbamate is contained in the thermosensitive layer or an intermediate layer interposed between the thermosensitive layer and the support.

Abstract: A thermal recording medium includes a thermal recording layer, which is provided on a transparent substrate, consisting essentially of an electron-donating chromophoric compound, an electron-accepting compound and a binder resin, an over layer, whose dynamic friction coefficient of the surface does not exceed 0.1, includes a resin having substantially the same refractive index as the thermal recording layer is further provided.

Abstract: A recording material comprising on the same side of a support, called the heat-sensitive side, (1) one or more layers comprising an imaging composition essentially consisting of (i) a substantially light-insensitive organic silver salt being in thermal working relationship with (ii) a reducing agent, and (2) at said same side covering said imaging composition a protective later, characterized in that said protective layer mainly comprises an organic thermosetting or moisture-hardened polymer or an organic thermosetting or moisture-hardened polymer composition.

Abstract: An optical recording medium including a substrate having thereon a recording layer containing a dye precursor, a color developer reactable with the dye precursor to develop a color, and a light absorbent for converting light to heat, characterized in that the color developer is at least one compound of Formula (1):(R--NH (C.dbd.S) NH)n--Z (1)(wherein R denotes a substituted or unsubstituted alkyl, cycloalkyl, aryl, aralkyl, or alkenyl. n is an integer of 2 or more, and Z denotes a group having a valence of 2 or more.). The optical recording medium is superior in heat resistance and plasticizer resistance of the recorded image, heat resistance of background, water resistance, and moisture resistance.).

Abstract: A reversible thermosensitive recording medium is disclosed which includes an opaque support and a transparent recording film having a thermosensitive layer capable of reversibly assuming a maximum transparent state and a maximum opaque state depending upon the thermal hysteresis thereof. The recording film has an image display section in which a void space is provided between the recording film and the opaque support and a color discriminative from the color of the support. The display section in the maximum transparent state shows a reflectance greater by 5% than that in the maximum opaque state and a transmittance of 20-80% in the maximum transparent state, so that the visibility of the recorded image is improved.

Abstract: A piggyback label construction includes a first label having a stock ply with a bottom face having pressure sensitive adhesive, and an imagable top face. A second label comprises a stock ply having a bottom face with pressure sensitive adhesive, a top face with a continuous image-producing coating, and a continuous adhesive release coating over the image-producing coating. The image-producing coating preferably is a thermosensitive coating having a first heat activation temperature of about 140.degree.-250.degree. F. (preferably about 145.degree.-155.degree. F). The first label stock ply has a weight of about 30 lbs. per 1000 sheet 11".times.17" ream, or less (preferably about 18-30 lbs.). The first label stock imagable top face preferably is a second thermosensitive coating having a higher heat activation temperature than the first heat activation temperature. The image-producing coating may comprise a self-contained coating.

Abstract: A reversible heat-sensitive recording medium which includes at least a support and formed thereon a heat-sensitive recording layer including at least the following components: an electron-donating color-forming compound having a lactone ring, (b) an electron-accepting compound having a phenolic hydroxyl group, (c) at least one organic compound selected from compounds represented by formulae (I) to (V), and (d) a thermoplastic resin having an erasing action. The content of the thermoplastic resin having an erasing action is being from 15 to 70% by weight based on the total amount of components (a) to (d) Formulae (I) to (V) are as follows:R.sub.1 --CO--N(R.sub.2)R.sub.3 (I)R.sub.1 --CO--NH--R.sub.4 --NH--CO--R.sub.2 (II)R.sub.1 --CO--O--R.sub.2 (III)R.sub.1 --NH--CO--NH--R.sub.2 (IV)R.sub.1 --CO--R.sub.2 (V)wherein R.sub.1 represents an alkyl group, an aryl group, an alkenyl group, or a hydroxyalkyl group; R.sub.2 and R.sub.

Abstract: A reversible thermal recording medium having a core material capable of being change in state by heat and a recording layer including capsules containing this core material. A repeatability corresponding to the limit of possible repeated recording/erasing effected by a physical or chemical change in the material constituting the recording can be obtained. A deterioration in image quality caused by transfer of a part of the recording layer to the heating unit can be prevented and repeat characteristics can be improved, thereby limiting the running cost.

Abstract: A thermosensitive recording element comprising a base having coated thereon a thermosensitive recording layer comprising a dye precursor, the base comprising a composite film laminated to at least one side of a support, the thermosensitive recording layer being on the composite film side of the base, and the composite film comprising a microvoided thermoplastic core layer and at least one substantially void-free thermoplastic surface layer.

Abstract: A recording material is provided with, on a support, at least a coloring layer containing a first coloring component which is substantially colorless and a second coloring component which is substantially colorless and is colored by reacting with the first coloring component, wherein the coloring layer contains a polyvinyl alcohol resin having syndiotacticity of greater than or equal to 55 molar % as diad indication and a saponification degree of greater than or equal to 85 molar %. There is also disclosed a recording material having a protective layer provided on the coloring layer of the aforementioned recording material, wherein the polyvinyl alcohol resin having syndiotacticity of greater than or equal to 55 molar % as diad indication and a saponification degree of greater than or equal to 85 molar % is contained in at least one of the coloring layer and the protective layer.

Abstract: A self-wound label stock includes a thermal paper substrate. One face of the substrate is coated with a primer layer having ultraviolet light blockers and a release layer having a smooth surface finish. Another face of the substrate is coated with an adhesive layer. Non-thermal printing is applied between the substrate and the primer layer. Thermal printing is applied to the substrate through the primer and release layers. A separator divides the label stock into individual labels.

Abstract: A reversible thermal recording medium having a core material capable of being change in state by heat and a recording layer including capsules containing this core material. A repeatability corresponding to the limit of possible repeated recording/erasing effected by a physical or chemical change in the material constituting the recording can be obtained. A deterioration in image quality caused by transfer of a part of the recording layer to the heating unit can be prevented and repeat characteristics can be improved, thereby limiting the running cost.

Abstract: A heat-sensitive recording material suited for use in direct thermal imaging, wherein said recording material comprises in the order given:(i) a transparent polymeric support,(ii) a heat-sensitive imaging layer, and(iii) a protective layer characterized in that said protective layer is an opaque layer containing uniformly distributed in an organic hydrophilic polymeric binder at least one opacifying pigment in the form of particulate material some of which protrudes from the surface of said binder and has anti-stick properties with regard to a thermal print head, and wherein the opacity of layer (iii) corresponds with an absorption and/or scattering of at least 80% of the light of the visible wavelength range (400 to 700 nm), wherein said opaque layer has been coated from an aqueous dispersion of said opacifying pigment particles or precursors thereof.

Abstract: A thermosensitive recording material having a high degree of background whiteness, superior light resistance without coloring of the background when exposed to the light, and a method of producing a stable coating liquid or forming a thermosensitive coloring layer and a protective layer are provided.

Abstract: A reversible thermosensitive recording label for reversibly forming images and erasing recorded images thereon is composed of a reversible thermosensitive recording member having a temperature-dependent transparency which reversibly changes depending upon the temperature thereof, an adhesive layer provided on the back side of the reversible thermosensitive recording member, and a disposable release sheet applied to the adhesive layer. A reversible thermosensitive recording card is composed of the reversible thermosensitive recording member, the adhesive layer provided on the back side of the reversible thermosensitive recording member, and a label receiving material to which the adhesive layer is applied.

Abstract: Business forms, particularly financial instruments such as checks, money orders, bank drafts, etc., are constructed with CF and CB, or self-imaging, sheets. MICR characters may be printed on the sheets without subsequent smearing by applying a UV curable ink to a CF or self-imaging sheet so as to block the CF or self-imaging material at the selected portion to which the ink is applied, thereby rendering it incapable of functioning as a CF or self-imaging element. The ink is applied to a moving web in a continuous manner prior to printing to form a continuous strip of ink, which moves past a UV radiation source so that it is quickly cured and does not adversely affect high speed production. The ink may also be applied to a CB, CF, or self-imaging sheet as a security feature, selectively blocking the transmission of confidential indicia at the selected portion of the sheet with which it is associated.

Abstract: A recording material comprising a plastic film provided with a layer of ionizing radiation cured resin having a hardness equal to or harder than a pencil hardness of H and an image-forming layer having pressure sensitivity or thermal sensitivity or photosensitivity and thermal sensitivity, wherein rippling during storage in high humidity or caused by heat is markedly reduced.

Abstract: A reversible thermal recording medium having a core material capable of being change in state by heat and a recording layer including capsules containing this core material. A repeatability corresponding to the limit of possible repeated recording/erasing effected by a physical or chemical change in the material constituting the recording can be obtained. A deterioration in image quality caused by transfer of a part of the recording layer to the heating unit can be prevented and repeat characteristics can be improved, thereby limiting the running cost.

Abstract: A reversible thermosensitive recording medium is composed of a support and a reversible thermosensitive recording layer whose transparency or color reversibly changes by the application of heat thereto formed on the support. The reversible thermosensitive recording layer has a thermal pressure level difference of 40% or less, land a thermal pressure level difference change ratio of 70% or less.

Abstract: A thermosensitive recording material of this invention has a support, on which a thermosensitive color developing layer mainly composed of a leuco dye and a color developer which is contacted with the leuco dye while heating to develop a color and a protective layer mainly composed of polyvinyl alcohol together with either aziridine compound or dimethylolurea are successively provided, the color developer being at least one of phthalic acid derivatives represented by the following general formula (I): ##STR1## wherein R.sub.1, X, Y and 1 are as defined in above. The thermosensitive recording material of this invention is excellent in sensitivity and density of the color development and has the high storage stability of the recorded images. Accordingly, the thermosensitive recording material of this invention is very useful.The selected inorganic filler may be incorporated in the thermosensitive color developing layer and/or the protective layer.

Abstract: An image transfer sheet comprises a base sheet, an intermediate thermoplastic resin layer and a top developer layer containing a binder. The binder of the top layer and the thermoplastic resin of the intermediate layer include a polymer having a common monomer component so that separation of the top layer from the intermediate layer and splitting of the top layer are effectively prevented. This provides a clear, high quality image on an image receiving surface such as paper by transference of a developed image on the developer layer.

Abstract: A thermosensitive recording element having improved abrasion resistance, said element comprising (a) a support; (b) a first layer comprising an organic polymeric binder and either a substantially colorless electron donating dye precursor or an electron accepting compound or mixtures thereof; and (c) a second layer comprising an organic polymeric binder compatible with the binder in (b) and either a substantially colorless electron donating dye precursor or an electron accepting compound, wherein both dye precursor and electron accepting compound are present in the element and wherein the first layer is interposed between the support and second layer. These elements have wide application in the printing industry.

Abstract: An optical image forming material in which the background portions thereof are not color developed (not fogged) during storage in the dark after fixing, comprising a support having thereon at least a coating layer containing (1) microcapsules containing a leuco dye which is form color when it is oxidized and a photooxidizing agent, and (2) a reducing agent and a fixing accelerator present outside of the microcapsules. The reducing agent is a hydroquinone derivative substituted by an alkyl group at each of 2- and 5-positions thereof, and the fixing accelerator is 2,2-bis(4-hydroxy-phenyl)propane.

Abstract: A thermal-sensitive recording material having reduced illusion and surface gloss when viewed with the light of a light box to provide distinct images having excellent image quality, comprising (a) a transparent support, (b) a thermal-sensitive recording layer formed on one surface of the transparent support, and (c) a light reflection reducing layer formed on the other surface of the transparent support, wherein the chromaticity coordinates according to JIS-Z8701 of the transparent support are within a quadrilateral region having 4 points A(x=0.2805, y=0.3005), B(x=0.2820, y=0.2970), C(x=0.2885, y=0.3015) and D(x=0.2870, y=0.3040) as vertices, and the thermal-sensitive recording material on the side of said light reflection reducing layer has a glossiness of from 1 to 50% at an incident angle of 20.degree..

Abstract: A recording material comprising on a support (i) a heat sensitive layer comprising a substantially light insensitive organic silver salt, (ii) a protective layer containing a thermomeltable particle dispersed in a binder and (iii) a reducing agent being present in the heat sensitive layer and/or any other layer of the recording material on the same side of the support carrying the heat sensitive layer.

Abstract: Enhanced thermal papers having a thermosetting organic polymeric-material containing heat-metering layer which enhances the thermal characteristics of the papers and methods of enhancing imaging characteristics of thermal papers, including particularly facsimile papers, by depositing onto the heat-metering layers of such papers a thermosetting organic polymeric-material-containing heat-metering layer.

Abstract: A reversible thermosensitive coloring recording method for producing multi-color images by use of a reversible thermosensitive coloring recording medium which is composed of a support and a reversible thermosensitive coloring recording layer containing a plurality of reversible thermosensitive coloring compositions, each coloring composition being independently present separated from the other coloring compositions, and capable of reversibly forming a color development state with a different color in a predetermined color development temperature range, and a decolorization state in a predetermined decolorization temperature range by the application of heat thereto and maintaining the above two states at room temperature, the decolorization temperature range being located lower in terms of temperature than the color development temperature range therefor, comprises the steps of: temporarily applying heat to the recording medium to a color development temperature at which at least two of the coloring compositio

Abstract: A linerless label and method of production thereof are provided which result in a fully utilizable thermal transfer linerless label. A substrate of label material has first and second faces each having first and second substantially parallel first and second edges, and a coating of thermal transfer material substantially completely covers the first face. First and second adhesive release material patterns, such as strips of UV curable silicone, are disposed substantially along the first and second edges of the first face, and first and second adhesive patterns, such as strips of a permanent hot melt adhesive, are disposed substantially along the first and second edges of the second face in alignment with the silicone strips, the patterns covering less than fifty percent of the label faces. The width of the adhesive strips are less than the silicone strips.

Abstract: A thermographic element containing: (a) a substrate; (b) an image-forming layer coated onto the substrate; and (c) overlaying the image-forming layer, a topcoat layer composed of the reaction product of (1) a polymer composed of interpolymerized units derived from: (i) about 45-65 wt % of vinyl-substituted aromatic monomer; (ii) about 15-30 wt % vinyl monomer containing a pendant nitrile group; (iii) about 5-30 wt % hydroxyl-containing; ethylenically-unsaturated monomer; and (2) a suitable crosslinking agent. A slip agent is optionally used. The topcoat layer provides a thermographic element with high gloss in the imaged areas; has excellent runnability with no chatter in the feed direction of the element; and exhibits no removal of topcoat which prevents formation of printhead-created voids in the imaged areas.

Abstract: A reversible heat-sensitive recording medium comprising a transparent substrate having a reversible heat-sensitive recording layer formed on one surface of the substrate and having a colored layer formed on the other surface of the substrate, wherein the reversible heat-sensitive recording layer contains organic low molecular weight materials and a crosslinked resin matrix.

Abstract: In accordance with the present invention there is provided a system and method for featuring information on a record. The system and method utilize reactant and coreactant compositions which are formulated to produce a color-changing reaction when brought together. The system and method also utilize a record having first and second areas disposed adjacent to each other. The second area is generally treated with the reactant composition. The coreactant composition is formulated to exhibit a first marking color on the first area of the record and to produce a color-changing reaction with the reactant composition on the second area of the record. The color-changing reaction effects a second marking color on the second area. The system and method further utilize a writing implement containing the coreactant composition. The implement is used to deposit the coreactant composition on the first and second areas in the form of symbolic information.

Abstract: A reversible thermosensitive recording material is disclosed, which comprises (i) a reversible thermosensitive recording layer which comprises as the main components a matrix resin and an organic low-molecular-weight material dispersed in the matrix resin, and (ii) a light reflection layer made of a metal thin film, which is preferably surface-treated to have a specular gloss of 70 to 250% in accordance with JIS Z8741 or a surface roughness of 0.5 to 10 .mu.m in terms of the ten-point average roughness defined in JIS B0601. This reversible thermosensitive recording material may further comprises a crystal-growth controlling agent in the reversible thermosensitive recording layer.