Abstract: Disclosed and claimed herein is a thermosensitive recording medium, having a base sheet; a binder; and a thermosensitive material on at least one surface of the base sheet comprising: one or more oxidizing agents; and a dye precursor.

Abstract: The present invention provides a composition, which comprises an aqueous solvent and forms a transparent colorless coating, which yields markings of high contrast on exposure to energy. It also provides a process for the preparation of these compositions, substrates coated with these compositions and a process for their preparation, a process for preparing marked substrates using these compositions and marked substrates obtainable by the latter process.

Abstract: The invention relates to an imaging member comprising at least one light insensitive layer comprising an oxidant and a multifunctional dye-forming coupler. It further relates to a method of imaging comprising providing an imaging member comprising at least one light insensitive layer comprising a catalytic center and multifunctional dye-forming coupler, imagewise applying a first developer solution that will react with said multifunctional dye-forming coupler, imagewise applying a second developer solution that will react with multifunctional dye-forming coupler, wherein said first developer solution and said second developer solution produce different colors.

Abstract: An electron accepting developer useful for producing visible images by reaction with an electron donor in carbonless paper and photo- imaging systems, the developer comprising an acid-treated, water insoluble alkali metal-modified, inorganic oxide or an acid-treated molecular sieve.

Abstract: A color developer composition comprising (A) a color developer containing a polyvalent metal salt of a salicylic acid derivative, and (B) a polyester polyol having in the molecule skeleton at least one carbonate bond or ester bond, and a derivative thereof, an aqueous dispersion and a color developing ink using this color developer composition, and a recording sheet having a layer containing this color developer composition on a base material.

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 direct thermal imaging process wherein a non-photosensitive direct thermal recording material is heated dot-wise, and said direct thermal recording material comprises an imaging layer containing uniformly distributed in a film-forming polymeric binder (i) one or more substantially light-insensitive organic silver salts, said silver salt(s) being uniformly in thermal working relationship with (ii) one or more organic reducing agents therefor, however neither including 3,5-dihydroxybenzoic acid as acidic reagent nor di-tert-butyl-p-cresol as a sole reducing agent, characterized in that said imaging layer contains at least one polycarboxylic acid and/or anhydride thereof in a molar percentage of at least 20 with respect to said silver salt(s).

Abstract: A non-photosensitive heat-sensitive recording material suited for use in direct thermal imaging by means of information-wise energized heating elements, wherein said recording material comprises:(i) at least two imaging layers each containing uniformly distributed in a film-forming resin binder (1) a metal salt in thermal working relationship with (2) an organic reducing agent, and(ii) at least one heat-attenuating spacer layer for separating said imaging layers from each other.

Abstract: A process for preparing a polyvalent metal salt of a salicylic acid resin which comprises the steps of reacting salicylic acid or its derivative with styrene or its derivative at a temperature of -20.degree. C. or higher but lower than 40.degree. C. in the presence of sulfuric acid, and then reacting the resulting reaction product with a polyvalent metal compound; an aqueous dispersion in which the polyvalent metal salt of the resin is dispersed in water; and a developing sheet in which the polyvalent metal salt of the salicylic acid resin is used.

Abstract: A recording material contains at least two coordination compounds which react to produce at least one newly produced coordination compound with the occurrence of visual changes in the recording material, which visual changes are utilized for recording.

Abstract: A dispersion of a carbonate type blocked color developer having a hydroxyl group having a color developing function which is blocked by an O-substituted oxycarbonyl group (--(C.dbd.O)OR.sub.1), and a metal salt of an organic acid or inorganic acid or a leuco dye are mixed to obtain an opaque undeveloped coating color, and the coating color is coated on paper or the like to obtain a recording sheet. Also, the coating color is further mixed with a light absorbent to obtain an opaque undeveloped coating color, which is coated on paper or the like to obtain an optical recording sheet.

Abstract: A color-developing composition comprises a multi-valent-metal-modified salicylic acid resin (Resin A) and a polycondensation resin (resin B) at a weight ratio of 90-30 to 10-70. Resin A is composed of 5-35 mole % of a structural unit (I) and 65-95 mole % of at least one structural unit (II) or 65-95 mole % of a coupled structural unit of at least one unit (II) and at least one unit (III) and has a weight-average molecular weight of 350-5,000. Resin B is composed of the unit (II) and/or the unit (III) and has a weight-average molecular weight of 350-5,000. ##STR1## wherein Z represents M/m, M being a metal ion of m valence and m being an integer; R.sub.1 and R.sub.2 represent H or a C.sub.1-12 alkyl, aralkyl, aryl or cycloalkyl group; R.sub.3 and R.sub.6 represent H or a C.sub.1-4 alkyl group; and R.sub.4 and R.sub.5 represent H or CH.sub.3.

Abstract: In a thermal recording sheet including an intermediate layer, and a thermal color developing layer containing a leuco dye type chromogenic component containing a leuco dye and an organic color developer as main ingredients and a metal chelate type chromogenic component containing an electron acceptor and an electron donor as main ingredients, stacked on a substrate, the intermediate layer contains a pigment having an oil absorption of 100 ml/100 g or less measured according to JIS K 5101, and the thermal color developing layer contains at least one of compounds of Formula (I) and Formula (II) as an organic color developer, a metal double salt of higher fatty acid having 16 to 35 carbon atoms as an electron acceptor, and a polyhydric hydroxy aromatic compound of Formula (III) as an electron donor, whereby providing a thermal recording sheet which is superior in dynamic sensitivity, background color, image stability such as oil resistance and plasticizer resistance, and print adaptability: ##STR1## wherein R is

Abstract: New thermoreactive recording materials contain a mixture containing at least one specifically modified bisphenol carboxylic acid and at least one basic compound. They are distinguished by good stabilization of the color even upon extended storage, good light stabilities and excellent stabilities to water, plasticizers, greases and ingredients of text-marking pens.

Abstract: A thermosensitive recording material suited for use in direct thermal imaging by means of an information-wise energized heating element, said recording material containing a thermosensitive recording layer of which the optical density is changed by heat, characterized in that said recording layer is coated with a protective transparent layer essentially consisting of a cellulose nitrate having a substitution degree (DS) in the range of 2.2 to 2.32.

Abstract: A developer composition containing a structured clay having a void volume greater than about 50%, a binder and a developer resin, and a developer sheet comprising a such developer composition on a support are described.

Abstract: The heat-sensitive recording material disclosed comprises a colorless or pale colored dyestuff precursor, one or more salicylic acid derivative of the formula (1) or metal salt of the derivative and an aliphatic amide compound having 18.about.60 carbon atoms in molecular structure, and is excellent in thermal response and preservation stability of white portions and images. ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, a halogen atom, an alkyl group, an alkoxy group, an aralkyl group or an aryl group, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group, and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group.

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: The present invention provides a color developer composition characterized in that the composition contains a color developer comprising as its main component a nucleus-substituted salicylic acid salt represented by the formula (1) given below, and at least one amide compound selected from the group consisting of the compounds of represented by the formula (2) and formula (3) given below. ##STR1## wherein R.sub.1 to R.sub.10 are as defined in the specification.

Abstract: A color-developing sheet using, as a color developer, polyvalent-metal-modified products of salicylic acid compounds composed mainly of a 3,5-di(.alpha.-methylbenzyl)salicylic acid derivative obtained by reacting a salicylic acid ester with an .alpha.-methylbenzyl halide in the presence of an acid catalyst and hydrolyzing the reaction product.Said color-developing sheet has excellent color developability at low temperatures and gives a color of excellent water resistance.

Abstract: A heat-sensitive recording material comprising a color forming, electron donating compound and a salicylic acid derivative represented by the formula (1): ##STR1## wherein X.sub.1 and X.sub.2 are a hydrogen atom, an alkyl group, an alkoxy group, an aralkyl group, an aryl group or a halogen atom, Y.sub.1 and Y.sub.2 are an oxygen atom or a sulfur atom, R.sub.1 is a hydrogen atom, an alkyl group, an aralkyl group or an aryl group , and R.sub.2 is an alkyl group, an alkenyl group, an aralkyl group or an aryl group, and/or a metal salt of the salicylic acid derivative as an electron accepting compound, is disclosed.

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: A color-developing sheet for pressure-sensitive copying paper sheets is obtained using an aqueous suspension of a color-developing composition containing a multivalent metal salt of a salicylic acid resin obtained from a salicylic acid ester and a mixture of styrenes which include a styrene dimer, which aqueous suspension is obtained by finely wet-grinding the color-developing composition in the presence of at least one anionic, water-soluble, high-molecular weight substance selected from (a) polyvinyl alcohol derivatives containing at least one sulfonic acid group thereof and salts thereof and (b) polymers and copolymers containing as an essential component a styrenesulfonic acid salt.

Abstract: The present invention is connected with a pressure sensitive copy material using a color former solution in which an electron accepting developer and an electron donating color former capable of developing a color when brought into contact with the developer are dissolved in a solvent, and as the solvent in the color former solution, a solvent composition is used which comprises (a) 5 to 50% by volume of one selected from the group consisting of a hydrogenated lower polymer of propylene and/or a butene, an alicyclic hydrocarbon, an alkylbenzene and a kerosine fraction, and (b) 50 to 95% by volume of a bicyclic aromatic hydrocarbon and/or a chlorinated paraffin oil having a viscosity of 3 cSt or more at 40.degree. C., the aforesaid developer comprising an aromatic carboxylic acid, a polymer thereof, a metallic salt thereof, a polyvalent metallized carboxy-modified terpene phenolic resin or a derivative thereof.

Abstract: The addition, to a thermal imaging medium comprising a color-forming compound which undergoes a change of color upon heating above a color-forming temperature for a color-forming time, the color-formingcompound being of the cyclic sulfonamide type described in U.S. Pat. Nos. 4,720,449 and 4,960,901,of a source of zinc, nickel, copper(II), cobalt(II) or aluminum(III) cations increases the sensitivity of the imaging medium and helps to prevent fading of images produced therefrom while the images are being projected.

Abstract: Disclosed is a heat-sensitive recording material comprising (A) a support and (B) a heat-sensitive recording layer formed on the support and containing a colorless or pale-colored basic dye and a color developing material which develops a color on contact with the dye, the recording material being characterized in that the color developing material comprises at least one member selected from the group consisting of o-naphthoic acid and polyvalent metal salts thereof.

Abstract: An image recording material comprises a support and an image recording layer provided thereon which contains a salicyclic acid derivative or its metal salt, which functions as a developer of a leuco dye to form a color image. A new salicylic acid developer is herein disclosed. The salicylic acid developer is a salicylic acid derivative having the formula (I) or its metal salt: ##STR1## in which each of R.sup.13 and R.sup.15 independently is hydrogen, an alkyl group, an aryl group or a tertiary aralkyl group; R.sup.16 is an alkyl group or an aryl group; and when R.sup.15 is hydrogen R.sup.13 is a tertiary aralkyl group. An image recording process employing the image recording material is also disclosed.

Abstract: This invention concerns monosubstituted dithiooxamides, and a preferred class comprises those wherein the substituent is such that the resulting dithiooxamide derivative is substantially nonvolatile at about room temperature. Preferred materials are those for which when the monosubstituent dithiooxamide is complexed with a transition metal cation, the resulting polymer is substantially a dark, i.e., preferably blue or blue-black color. Carbonless paper constructions involving use of N-(monosubstituted)dithiooxamides to advantage are described.

Abstract: The present invention provides a recording material utilizing the color forming reaction between a colorless or light-colored basic dye and a color acceptor reactive with the dye to form a color and forming on the same or different substrate layer or layers containing the basic dye and the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicylic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein X is straight-chain or branched-chain C.sub.1.about.12 alkylene or C.sub.5.about.12 cycloalkylene, R is C.sub.1.about.20 alkyl having or not having a substituent or C.sub.2.about.20 alkenyl having or not having a substituent, Y is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl or halogen atom, Z is C.sub.1.about.6 alkyl, C.sub.2.about.6 alkenyl, C.sub.7.about.10 aralkyl, C.sub.1.about.

Abstract: A recording material utilizing the reaction between a colorless or light-colored basic dye and a color acceptor reactive with the basic dye to form a color and forming on the same or different substrate a layer or layers containing the basic dye of the color acceptor conjointly or separately, the recording material being characterized in that the color acceptor is at least one of salicyclic acid derivatives represented by the following formula [I] or polyvalent metal salts thereof ##STR1## wherein Ar, R, X, l and m are defined in the specification.

Abstract: Sympathetic ink compositions particularly adapted for use with high speed, non-impact ink printing equipment are disclosed, together with methods of use and development thereof. The inks of the invention are water-based and include of from about 4-20% by weight of a water soluble transition metal salt (e.g., nickel sulfate), together with of from about 2-4.5%, by weight of n-butanol or 2-butanol. After application using, e.g., ink jet printing equipment, the resulting inked images are invisible to the naked eye, and can be selectively developed through use of color-forming developers such as dimethylglyoxime- or oxalic acid-type aqueous compositions.

Abstract: A pressure-sensitive chromogenic copy system comprising a transfer sheet having on at least a portion of at least one surface thereof a color developer capable of reacting with a chromogen to form a color image, said color developer comprising a crude reaction medium resulting from reactants used to prepare a salicylate and also containing therein at least one metal compound of such salicylate, the resultant transfer sheet, color developer and process for making such color developer.

Abstract: A thermosensitive recording material comprising (a) a support, and (b) a thermosensitive recording layer formed on the support, comprising a leuco dye and a color developing agent comprising a metal salt or metal complex of a compound having formula (I), which is capable of inducing color formation in the leuco dye upon application of heat thereto: ##STR1## wherein X represents a halogen, an alkyl group having 1 to 10 carbon atoms, or an alkoxyl group having 1 to 10 carbon atoms; R.sup.1, R.sup.2, R.sup.3, R.sup.4 and R.sup.5 independently represent hydrogen, a halogen, a hydroxyl group, an alkyl group having 1 to 10 carbon atoms, an alkoxyl group having 1 to 10 carbon atoms, an aralkyloxyl group having 7 to 20 carbon atoms, an aryloxyl group having 6 to 20 carbon atoms, an alkylthio group having 1 to 10 carbon atoms, an aralkylthio group having 6 to 20 carbon atoms or an arylthio group having 6 to 20 carbon atoms, R.sup.1 and R.sup.2, or R.sup.2 and R.sup.

Abstract: A color developer for pressure-sensitive recording paper is produced by admising components comprising:(A) 100 parts by weight of a polyvalent metal salt of a co-condensation product of a substituted salicylic acid, an aromatic hydrocarbon and an aldehyde. Such a co-condensation product is obtained by reacting:(a) a substituted salicylic acid,(b) one or more aromatic hydrocarbons having 4 to 9 carbon atoms, and(c) an aldehyde of 1 to 8 carbon atoms, in the presence of an acidic catalyst; and(B) 5 to 200 parts by weight of one or more members selected from the group consisting of petroleum resins, terpene resins, modified terpene resins, coumaarone resins and modified coumarone resins.The color developer is excellent in color density, resistance to yellow staining, fastness to light of color images and resistance to fading in water of color images, and in addition is capable of forming color images at a markedly increased speed.

Abstract: Odorless or absolutely ordorless multi-valent metal-modified salicylic acid. The former copolymers are obtained by condensing salicylic acid with a benzyl aldehyde, reacting the resultant resin with a styrene derivative and reacting the resin thus-obtained with a multivalent metal salt. The latter copolymers are obtained by adding water dropwise to the resultant multi-valvent metal-modified resin at a temperature above the boiling point of water to remove completely volatile matters.

Abstract: Pressure-sensitive reactive recording material containinga) as the color-forming agent, a tetraindolylheptamethine ether or alcohol of the formulae I/1, I/2, I/3 or I/4 ##STR1## b) and, as the color developer, the salt of a polyvalent metal and an aromatic carboxylic acid having at least 10 carbon atoms, of the formula (II) ##STR2## wherein A, B, D and E denote ##STR3## and the other radicals have the meanings given in the description, produces light-stable copies which can also be read by machines (OCR).

Abstract: Phenol/aldehyde condensation products useful in the development of colored images from colorless dyes are disclosed. The phenol/aldehyde condensation products are produced by the interaction of an alkyl-substituted salicylic acid, an alkyl-substituted phenol, an aldehyde, and a metal source. The phenol/aldehyde condensation products are particularly useful in a photosensitive imaging system in which images are formed by the image-wise reaction of the developer with one or more chromogenic materials, and in carbonless copy paper systems.

Abstract: The present invention provides an intensely colored thermographic medium useful for bar-coding applications which utilize near infrared scanning systems. The medium is formed of a substrate having on at least one surface thereof a coating comprising: a transparent film-forming binder, an organic solvent soluble catechol, a metal salt and colorant.

Abstract: A recording medium comprising a planar substrate, and a layer of microcapsules carried by the planar substrate, each of the microcapsules containing a photosensitive material whose hardness varies upon exposure to a radiation, and a heat-sensitive chromogenic material which produces a color at a temperature higher than a room temperature.

Abstract: A developer composition having improved resistance to vinyl blocking comprising a finely divided thermoplastic phenolic resin and a finely divided thermoplastic vinylic or acrylic resin;the vinylic or acrylic resin is prepared from a monomer composition containing a polar monomer which renders the composition resistant to vinyl plasticizers;developer sheets prepared from the developer composition and processes for forming images utilizing the developer composition are disclosed.

Abstract: Disclosed herein are novel multivalent metal-modified salicyclic acid resins useful as color-developing agents for pressure-sensitive copying paper. They can each be produced by causing a salicyclic acid ester and a styrene derivative to undergo a Friedel-Crafts reaction in the presence of a strong acid catalyst, hydrolyzing the resulting salicylic acid ester resin, and then reacting the thus-obtained salicyclic acid resin with a multivalent metal salt.

Abstract: The present invention provides a developer sheet useful in forming reproductions having a controllable gloss finish and reduced photolytic yellowing. The developer sheet comprises a support having a layer of a finely divided, thermoplastic, phenolic developer material and an anti-yellowing agent on the surface thereof. The phenolic developer material is capable of reacting with a color former to produce a visible image and is capable of coalescing into a thin film which imparts gloss to the image upon the application of heat.

Abstract: A recording medium comprising at least one electron donating colorless dye and at least one electron accepting compound, wherein the electron accepting compound is a salicylic acid compound represented by formula (I): ##STR1## wherein R represents a divalent group; X and Y, which may be the same or different, each represents a hydrogen aotm, an alkyl group, an aryl group, an alkoxy group, or a halogen atom; and Z represents a hydrogen atom, a carboxyl group, an alkyl group, an aryl group, an alkoxy group, or a halogen atom, or a metal salt thereof.

Abstract: A positive-acting thermographic material which is black or dark colored in the unexposed condition turns white or light colored when exposed to elevated temperatures. The material comprises a binder, a dark colored complex of ferric iron with a ligand chosen from organothiophosphorus acids, and a white organophosphorus acid or its alkali or alkaline earth metal salt. At elevated temperatures a double decomposition reaction occurs giving the light colored complex of ferric iron with the organophosphorus acid.

Abstract: A heat-sensitive recording material including a support and a color-developing layer comprising an electron doner, an electron acceptor and a fluorescence-dyestuff and/or pigment. The heat-sensitive recording material is superior in both readability in an irradiation of UV-ray and optical readability in near infrared region.

Abstract: Pressure sensitive imaging materials are stable until pressure addressed, but thereafter provide an intense dark image. The materials comprise colorless ferric organophosphate, ferric organophosphinate, or ferric organophosphonate and a colored chelate.

Abstract: Pressure sensitive imaging materials are colorless until pressure addressed, but thereafter provide an intense dark image. The materials comprise white ferric organophosphate, ferric organophosphinate, or ferric organophosphonate and a colorless chelate. The choice of substituents on the chelate nucleus can give images with both good discrimination visually and to near infrared radiation (NIR).

Abstract: An improved thermally-responsive record material having improved image retention is disclosed. The invention is an improved thermally-responsive record member, typically a sheet material, bearing a thermally-responsive color-forming composition comprising a chromogenic material, an acidic developer material, and a metal salt of a compound of the formula ##STR1## wherein M is a metal selected from Zn, Ca, Sn, Ni, Cu, Al, Co, and Mg; wherein m corresponds to the valency of M;wherein n is 1 to 3;wherein R.sup.1 is selected from hydrogen, halogen, alkyl, oxyalkyl, or NO.sub.2, with the proviso that the alkyl group is of 1 to 50 carbons;wherein R.sup.2 is selected from hydrogen, alkyl, or aryl, with the proviso that the alkyl group is of 1-5 carbon; anda suitable binder therefor.

Abstract: A recording material comprising a support provided thereon a color developer and microcapsules containing a substantially colorless color former is disclosed, wherein the microcapsules further contains at least one of nickel compounds represented by formulae (I) and (II) shown in the specification. The microcapsules exhibit excellent light-resistance, and a color image developed exhibits excellent light-fastness.

Abstract: A heat-sensitive recording material which produces a developed color image with improved light fastness upon application of thermal energy comprising:(1) an electron-donating colorless dye,(2) an electron-accepting compound, and(3) a nickel compound represented by formula (I): ##STR1## wherein R.sub.1 and R.sub.2 each represents an aryl group, or they may combine with each other; L represents an organic ligand which forms a complex salt by connecting to the nickel ion via its hetero atom; and n represents an integer of 0, 1 or 2.