Abstract: The invention describes a thermally-responsive record material substantially free of aromatic isocyanate. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless dye precursor comprising a fluoran; and a developer material selected from the group consisting of 4,4?-diaminodiphenylsulfone and 3,3?-diaminodiphenylsulfone, which upon being heated react with said dye precursor to develop color, and including a binder material. Optionally, a modifier compound is included in the heat-sensitive composition. The modifier compound can be selected from the group consisting of a fatty acid amide, preferably a saturated fatty acid amide such as an alkyl amide, a bis methylene alkyl amide, or a bis ethylene alkyl amide, or any of 1,2-diphenoxy ethane, dimethyl diphenoxy ethane, and dimethyl phthalate.

Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Abstract: A method for preparing a color laser marked article comprising the steps of: a) infrared laser marking a security element including a polymeric support and a color forming layer comprising a color forming compound, an infrared dye and a polymeric binder comprising vinyl acetate and at least 85 wt % of vinyl chloride based on the total weight of the binder; and b) exposing the laser marked security element with light having a wavelength higher than 440 nm. The light exposure of step b) hinders the falsification of an issued security document without significant increase of background density.

Abstract: The invention describes a thermally-responsive record material substantially free of aromatic isocyanate. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless dye precursor comprising a fluoran; and a developer material selected from the group consisting of 4,4?-diaminodiphenylsulfone and 3,3?-diaminodiphenylsulfone in combination with N-[(butylamino)carbonyl]-4-methylbenzene sulfonamide, which upon being heated react with said dye precursor to develop color, and including a binder material.

Abstract: The invention describes an improved thermally-responsive record material substantially free of aromatic isocyanate yielding an image of high intensity and useful for bar codes. The record material comprises a support having provided thereon a heat-sensitive composition comprising a substantially colorless color former comprising a fluoran; and a developer material selected from the group consisting of 4,4?-diaminodiphenylsulfone and 3,3?-diaminodiphenylsulfone, and an organic acid which upon being heated reacts with said color former to develop color, and including a binder material. Optionally, a modifier compound is included in the heat-sensitive composition. The compound can be selected from the group consisting of a fatty acid amide, such as stearmide. Optionally, magnesium state is included.

Abstract: A heat-sensitive recording material includes at least a paper substrate, a heat-sensitive recording layer arranged on the front side of the substrate and which has at least one dye precursor and at least one color acceptor, wherein dye precursor and color acceptor react with one another under the action of heat to form color, and an authenticating security feature. The authenticating security feature is a mark which is applied to the back side of the paper substrate and which is made of a tincture having at least one organic solvent. A barrier coating is arranged between the substrate and heat-sensitive recording layer and is suitable to protect the heat-sensitive recording layer against penetration of the tincture into the heat-sensitive recording layer from the back side.

Abstract: Self-expiring labels and badges are made by a method of: (A) contacting a first component of a dye system with a second component of the dye system, the first component carried on a facial surface of a transfer ribbon and the second component carried on a facial surface of a media, the second component beneath and in contact with a timing layer, and (B) heating the contacted first component of the dye system and timing layer with a thermal print head such that (i) the first component of the dye system transfers to the timing layer, and (ii) the first component of the dye system begins to migrate through the timing layer to the second component of the dye system which, upon contact of the first and second components of the dye system, an image is formed.

Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Abstract: A thermosensitive recording medium including a support, and a thermosensitive recording layer containing a leuco dye and a developer, and formed on a surface of the support, wherein the thermosensitive recording medium comprises at least any one of diiodomethyl-p-tolylsulfone and 3-iodo-2-propynyl-butyl-carbamate.

Abstract: A proposed heat-sensitive recording material comprises a substrate, a heat-sensitive recording layer containing color formers and color acceptors, and a protective layer covering this heat-sensitive recording layer. The heat-sensitive recording layer has, as color acceptor, at least 66? percent by weight of 4,4?-dihydroxydiphenyl sulfone based on the total percentage of color acceptors in the heat-sensitive recording layer, and the protective layer has, as binder, at least 60 percent by weight of diacetone-modified polyvinyl alcohol based on the total percentage of binder in the protective layer.

Abstract: An object of the present invention is to provide a recording material or a recording sheet that is excellent in background and image stabilities and further excellent in color-developing sensitivity. The recording material of the present invention contains a color-forming compound, an additive, and at least one compound represented by formula (I) [wherein R1 and R4 each independently represent a C1-C6 alkyl group or the like; p represents 0 or any integer of 1 to 4; q represents 0 or any integer of 1 to 5; when p and q represents 2 or more, each of R1 and each of R4 are the same or different; R2 and R3 each independently represent a hydrogen atom or the like; R5 represents a hydrogen atom or the like; and the bond represented by the wavy line represents E, Z, or a mixture thereof].

Abstract: A heat-sensitive recording material includes at least a paper substrate, a heat-sensitive recording layer arranged on the front side of the substrate and which has at least one dye precursor and at least one color acceptor, wherein dye precursor and color acceptor react with one another under the action of heat to form color, and an authenticating security feature. The authenticating security feature is a mark which is applied to the back side of the paper substrate and which is made of a tincture having at least one organic solvent. A barrier coating is arranged between the substrate and heat-sensitive recording layer and is suitable to protect the heat-sensitive recording layer against penetration of the tincture into the heat-sensitive recording layer from the back side.

Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Abstract: A heat-sensitive recording material is proposed, which comprises a substrate and a heat-sensitive recording layer that contains color formers and color acceptors, where the color formers are selected from the list comprising: 3-diethylamino-6-methyl-7-anilinofluoran, 3-dibutylamino-6-methyl-7-anilinofluoran, 3-(N-methyl-N-propyl)amino-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-isoamyl)amino-6-methyl-7-anilinofluoran, 3-(N-methyl-N-cyclohexyl)amino-6-methyl-7-anilinofluoran, 3-(N-ethyl-N-tolyl)amino-6-methyl-7-anilinofluoran, and 3-(N-ethyl-N-tetrahydrofuryl)amino-6-methyl-7-anilinofluoran, the heat-sensitive recording layer contains two color acceptors, which are: N-(p-toluenesulfonyl)-N?-3-(p-toluenesulfonyloxyphenyl)urea with the following formula (1): and a urea-urethane compound with the following formula (2): where the ratio of the two color acceptors, i.e.

Abstract: A polymer composite material (10, 110, 210, 310) is described. The material includes a settable matrix material (12), a plurality of reinforcement members (14) and a plurality of capsule members (16). Each capsule member (16) includes a shell layer (22) encapsulating an indicator material (24). The polymer composite material comprises an initial condition in which each shell layer contains the indicator material, and a damaged condition in which at least one shell layer is ruptured, releasing indicator material. The polymer composite material is changed from the initial condition to the damaged condition by the application of a predetermined force to the polymer composite material.

Abstract: A compound represented by the following general formula (II): wherein R21 represents hydrogen atom or one to four monovalent substituents substituting on the benzene ring, and when R21 represents two or more substituents, the substituents may be the same or different; R22, R24, R25, and R27 independently represent hydrogen atom, or a monovalent substituent; R23 represents —OH or —N(R28)(R29) (wherein R28 and R29 independently represent an alkyl group which may be substituted); R26 represents —N(R30)(R31) (wherein R30 and R31 independently represent an alkyl group which may be substituted); n represents an integer of 1 to 3; and Y represents —S— or —O—, which is useful for selective measurement of hypochlorite ion.

Abstract: A thermosensitive recording medium including a support, and a thermosensitive recording layer containing a leuco dye and a developer, and formed on a surface of the support, wherein the thermosensitive recording medium comprises at least any one of diiodomethyl-p-tolylsulfone and 3-iodo-2-propynyl-butyl-carbamate.

Abstract: Systems and method for optically recording data. One system comprises a disc comprising a substrate and a markable coating on said substrate, the markable coating having a thickness less than 1 ?m and comprising: a matrix; and a color-forming agent included in the matrix and comprising a leuco dye and developer; wherein the leuco dye is selected to change from high reflectance of radiation with wavelengths between 400 and 500 nm to low reflectance of radiation with wavelengths between 400 and 500 nm when activated by the application of energy above a threshold level; and a marking light source positioned so as to illuminate the disc in a desired manner.

Abstract: Disclosed herein in a preferred embodiment is a recording material comprising a substrate and a coating comprising at least 3 plies, wherein the outermost ply contains nanoparticles and the inner plies together contain at least one color former, at least one color developer, at least one absorber and at least one solubilizer, and no ply contains both a color former and a color developer. Also disclosed is a process for producing the recording material of the invention and also to a laser marking process wherein the recording material is irradiated with a laser.

Abstract: A thermal recording material having a thermally color-forming thermal recording layer and a protective layer which are formed on a substrate in this order, wherein the protective layer is a layer obtained by applying an aqueous coating liquid containing a polyvinyl alcohol, a crosslinking agent, a pigment, an Arrhenius acid and a volatile amine onto the thermal recording layer and drying the applied coating liquid.

Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Abstract: There are described thermal imaging members and thermal imaging methods utilizing unsymmetrical rhodamine compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form.

Abstract: There are described novel rhodamine color-forming compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form. Thermal imaging members containing these color-formers are also described.

Abstract: There are described novel rhodamine dye compounds and imaging members and imaging methods, including thermal imaging members and imaging methods, utilizing the compounds. The dye compounds exhibit a first color when in the crystalline form and a second color, different from the first color, when in the liquid, amorphous form.

Abstract: The invention provides a thermosensitive recording material having, on a support, a thermosensitive recording layer incuding an electron-donating dye precursor and an electron-accepting compound that makes the electron-donating dye precursor thermally develop a color, wherein the thermosensitive recording layer includes the electron-accepting compound in a ratio of from 5/1 to 20/1 by mass ratio with respect to the electron-donating dye precursor.

Abstract: An erasable image forming material includes a color former containing crystal violet lactone, a developer, a first binder resin of styrene-butadiene copolymer and a second binder resin of a styrene-based resin containing ?-methylstyrene, the first and second binder resins being in a compatible state.

Abstract: In a thermal recording medium including a basic chromogenic dye, a developer and a sensitizer, a composition for a thermal recording medium which composition contains 50 ppm to 5.0 mass % of 1-(3-methylphenoxy)-2-(4-methylphenoxy)ethane and/or 1,2-bis(4-methylphenoxy)ethane in 1,2-bis(3-methylphenoxy)ethane is used as said sensitizer, whereby the 1,2-bis(3-methylphenoxy)ethane compound is remarkably improved in milling property in the preparation of the above sensitizer, and a thermal recording medium is provided without impairing the colorability, etc., such as thermal colorability.

Abstract: The invention provides a heat-sensitive recording material, which is highly sensitive, is almost free of staining on the background, and gives a recorded image excellent in stability during storage, by using a finely divided sensitizer dispersion excellent in shelf stability produced in a short time with high volumetric efficiency. The invention relates to a method of producing a sensitizer dispersion, which comprises emulsifying and finely dividing a heat-sensitive recording sensitizer by melting under heating in an aqueous emulsifying dispersant, and then crystallizing the finely divided emulsified dispersion under rapid cooling, wherein the sensitizer is at least one member selected from the group consisting of 1,2-bis(phenoxy)ethane, 1,2-bis(3-methylphenoxy)ethane, 1,2-bis(4-methylphenoxy)ethane, p-benzylbiphenyl, di-p-methylbenzyl oxalate, and ?-naphthyl benzyl ether.

Abstract: There are described novel rhodamine color-forming compounds. The rhodamine color-forming compounds exhibit a first color when in a crystalline form and a second color, different from the first color, when in an amorphous form. Thermal imaging members containing these color-formers are also described.

Abstract: A method of preparing a thermally printable sheet which comprises providing a substrate comprising a base sheet having at least one surface coated with a layer containing a pigment in solid porous particulate form, and, using a printer, printing onto the coated surface of said substrate, a thermal ink which comprises a colour former, a colour developer and a sensitizer, characterised in that the sensitizer comprises dimethyl terephthalate, and that the ink also comprises at least one pigment. A novel thermally printable sheet suitable for use in such method is also provided.

Abstract: An erasable image forming material includes a color former containing crystal violet lactone, a developer, a first binder resin of styrene-butadiene copolymer and a second binder resin of a styrene-based resin containing a-methylstyrene, the first and second binder resins being in a compatible state.

Abstract: An erasable image forming material is provided, which includes a binder resin, and a color former and a developer dispersed in the binder resin. The color former is amorphous.

Abstract: Compositions and methods for production of color images having increased light stability and reduced browning are described. The color forming composition can include a leuco dye, an infrared absorber, and at least one of a stabilizer and an anti-fade agent. The color forming compositions can be stabilized such that less than about a 30% decrease in optical density occurs over a three year period. The stabilizers can include chroman, thiolane-nickel complexes, spiroindanes, while suitable anti-fade agents can include vitamin E, vitamin E analogs, astaxanthin, chroman, ascorbic acid, carotene, and mixtures thereof. The color forming compositions are ambient light stable and are useful in forming images on a wide variety of substrates such as optical disks.

Abstract: An erasable image forming material includes a color former, a developer, and a binder resin, the color former containing Crystal Violet Lactone and a specific fluorane compound can enhance light fastness as well as heat decolorizing performance.

Abstract: Systems and methods of labeling optical disk recording media using black leuco dyes in an electromagnetic radiation sensitive composition are described. Black leuco dyes containing isobenzofuranone are prepared in various compositions that can include activators, radiation absorbers, non-leuco colorants, and/or a variety of carriers. The leuco dye compositions can be applied and prepared to achieve a desired visual effect upon development of the black leuco dye.

Abstract: The present invention provides a heat-sensitive recording material comprising a substrate and a heat-sensitive recording layer provided thereon, the layer comprising a color forming system that combines an electron-donating colorless dye and an electron-accepting compound, in which the electron-accepting compound is a compound represented by the formula R1-Ph-SO2R2 (wherein R1 represents a hydroxyl group or an alkyl group, R2 represents -Ph, —NH-Ph, -Ph-OR3 or —NH—CO—NH-Ph, R3 represents an alkyl group, and Ph represents a phenyl group), and at least the heat-sensitive recording layer is formed by curtain-coating a coating solution for the heat-sensitive recording layer.

Abstract: A thermal recording material having a support and, formed thereon, a thermal coloring layer containing an electron donating colorless dye and an electron accepting compound, wherein the electron accepting compound comprises 4-hydroxybenzenesulfoneanilide and the support comprises a used paper pulp as a primary component; the thermal recording material which further comprises at least one of calcium carbonate of calcite type, amorphous silica and aluminum hydroxide as an inorganic pigment; and the thermal recording material wherein the electron donating colorless dye comprises a specific colorless dye and the recording material is formed through the use of a liquid pigment dispersion having a pH of 7 to 10.

Abstract: A thermosensitive recording material of the present invention has a thermosensitive color developing layer on a support, and the thermosensitive color developing layer contains at least an electron-donating colorless dye and 4-hydroxybenzenesulfone anilide as an electron-accepting compound.

Abstract: (B) A thermosensitive recording material comprises a thermosensitive recording layer containing an electron-donating colorless dye, an electron-accepting compound which develops color upon a reaction with the electron-donating colorless dye and a sensitizer, wherein the thermosensitive recording material satisfies at least one of the following conditions (1) to (3). (1) An image density when thermal printing is performed with a printing energy is 1.20 or more, and the thermosensitive recording material is used for a recording device having a printing speed of 10 cm/sec or more. (2) An image density after the thermosensitive recording material is brought into contact with a heat source of 70° C. for 5 seconds is 0.15 or less, and the sensitizer is 2-benzyloxynaphthalene or the like.

Abstract: A thermosensitive recording material is provided having improved resistance to heat and chemicals, and having improved sensitivity to image formation while minimizing background coloring, wherein the thermosensitive recording material has a substrate, on which is a thermosensitive recording layer containing a leuco dye, a developer of formula (I) and at least two sensitizers, the two sensitizers being 4-hydroxy-4?-allyloxy diphenylsulfone and 4,4?-diallyloxy diphenylsulfone.

Abstract: Provided is a thermal recording material that is excellent in thermal response and retainability of an image portion and which generates fewer residues adhering to the thermal head of a thermal printer. The thermal recording material having a thermal recording layer comprising a generally colorless or light-colored electron-donating dye precursor and an electron-accepting developer that reacts under heat to cause said dye precursor to form a color, said thermal recording layer containing a specific diphenylsulfone derivative, a specific amide derivative and a specific fluorane derivative, wherein the weight ratio of the specific diphenylsulfone derivative above and the specific amide derivative above is 2/1 to 1/2.

Abstract: A coating includes an antenna uniformly distributed in both a matrix and a leuco-dye phase of the coating. A method for preparing an imaging material includes providing a powder having an activator and an antenna, dissolving the activator/antenna powder to form an activator/matrix pre-polymer solution, providing a leuco-dye alloy, and dispersing the leuco-dye alloy into the activator/matrix pre-polymer solution to form a radiation-curable paste. An image-recording medium includes a matrix having an antenna and an activator, and an alloy dispersed in the matrix as an independent phase. The alloy includes an antenna, a leuco-dye, and an accelerator.

Abstract: There are described novel rhodamine dye compounds and imaging members and imaging methods, including thermal imaging members and imaging methods, utilizing the compounds. The dye compounds exhibit a first color when in the crystalline form and a second color, different from the first color, when in the liquid, amorphous form.

Abstract: The present invention relates to a method of manufacturing heat sensitive recording material for the bar code reader wavelength range of 660–690 nm, the recording material containing a base layer and a coating, and the coating containing at least a color former and a developer. The method of the invention is characterized in that the color former and the developer are selected so that when the reflectance of the color former-developer compound on the recording material is determined, it remains below a target curve determined with a function Hp=1.775*Ap22*10?61, where Hp is the reflectance percent and Ap the wavelength (nm) used in the bar code reader.

Abstract: A heat-sensitive recording material includes a support having successively disposed thereon: a heat-sensitive color-forming layer containing an electron-donating colorless dye and an electron-accepting compound; and a protective layer; wherein the heat-sensitive color-forming layer contains a water-soluble polymer and 4-hydroxybenzenesulfonanilide as the electron-accepting compound, and the protective layer contains at least one inorganic pigment selected from aluminum hydroxide, kaolin and amorphous silica. The electron-donating colorless dye is preferably at least one selected from 2-anilino-3-methyl-6-di-n-butylaminofluoran, 2-anilino-3-methyl-6-di-n-amylaminofluoran and 2-anilino-3-methyl-6-(N-ethyl-N-p-benzyl)aminofluoran.

Abstract: Disclosed are a thermal recording material having a thermal recording layer containing an electron-donating dye precursor and an electron-accepting compound, wherein the thermal recording layer comprises an electron-accepting compound of the general formula (I), (each of R1 and R2 is a hydrogen atom or an alkyl group), and a specific aromatic phosphorus compound, and a thermal recording material wherein said thermal recording layer comprises the electron-accepting compound of the above general formula (I) and an undercoat layer formed on a substrate comprises an organic pigment having a specific morphological structure. The former thermal recording material is excellent particularly in thermal response as well as heat resistance and light resistance of a ground and images in storage, and the latter thermal recording material is excellent particularly in whiteness.

Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on the support and containing a leuco dye, a developer and a binder, wherein the heat-sensitive recording material uses as the developer at least two hydroxy-diphenylsulfone compounds such as 4-hydroxy-4?-isopropoxy-diphenylsulfone, 2,4?-dihydroxy-diphenylsulfone and the like, and uses as the leuco dye a black-color-forming leuco dye such as 3-di(n-butyl)amino-6-methyl-7-anilinofluoran or the like and 0.5 to 3.5 wt. %, relative to the black-color-forming leuco dye, of a red-color-forming leuco dye such as 3-diethylamino-7-chlorofluoran or the like.

Abstract: A heat-sensitive recording material including, on a support, a heat-sensitive color-developable layer containing an electron-donating colorless dye and an electron-accepting compound, wherein the electron-accepting compound contains a compound represented by R1—Ph—SO2R2, and an adhesive strength when an adhesive sheet such as a revenue stamp is affixed to a recording face of a heat-sensitive recording paper made of the heat-sensitive recording material is larger than a given value, and a center line average roughness Ra75 of the heat-sensitive recording face is 2.0 ?m or less.

Abstract: Disclosed is a heat-sensitive recording material comprising a support and a heat-sensitive recording layer formed on the support and containing a leuco dye and a developer, the developer being N-p-toluenesulfonyl-N′-3-(p-toluenesulfonyloxy)phenylurea, and the heat-sensitive recording layer containing (a) at least one fluoran-based leuco dye with a melting point of 190 to 230° C. and/or (b) at least one pigment selected from the group consisting of aluminum hydroxide, amorphous silica, kaolin and talc.

Abstract: Systems and methods of labeling optical disk recording media using black leuco dyes in an electromagnetic radiation sensitive composition are described. Black leuco dyes containing isobenzofuranone are prepared in various compositions that can include activators, radiation absorbers, non-leuco colorants, and/or a variety of carriers. The leuco dye compositions can be applied and prepared to achieve a desired visual effect upon development of the black leuco dye.