Abstract: This disclosure is directed to a high solid, low viscosity carbonless paper gelatin base microcapsule system producing microcapsules having sizes characteristically from about 3 to about 10 microns (micrometers) and being characterized as single oil drop microcapsules. This system of microcapsules is further characterized by a high solids content, viz., from about 25 to about 50 weight percent solids, in combination with a low viscosity, viz., ranging from about 10 to about 60 centipoises and having a high microcapsule payload (core concentration by weight based on total capsule weight), e.g., of 80+ wt. % and preferably about 90 weight percent and higher, in aqueous suspensions. The combination of high solid content and high microcapsule payload, with low viscosity enables delivery of a high concentration of solid microcapsules at reasonably high coating speeds via comparatively inexpensive conventional pumping systems and paper coating systems.

Abstract: A multicolor recording material is disclosed, which comprises a support having provided thereon a coating layer comprising two or more kinds of microcapsules each containing at least a leuco dye capable of being colored by oxidation and a photo oxidizing agent outside said microcapsules, and a reducing agent as necessary components, with two or more leuco dyes capable of forming different colors from each other being retained in different kinds of said microcapusles respectively composed of walls of high polymers having different glass transition points.

Abstract: An optical image-recording material comprising:(a) microcapsules, in which at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules, or(c) microcapsules, in which at least one reducing agent is enclosed, and (d) both at least one leuco dye capable of forming a color by oxidation and at least one photo-oxidizing agent not enclosed in the microcapsules,wherein the microcapsules have capsule walls made from a material which lowers its permeability barrier to at least one component selected from the photo-oxidizing agent and the reducing agent when the capsule wall material is heated above its glass transition temperature, and the leuco dye is a xanthene compound having an N-substituted anilino group substituted by an electron attracting group.

Abstract: This invention discloses a photo- and heat-sensitive recording material excellent in fixability comprising a support having on one side of which at least one photo- and heat-sensitive layer having a haze % of less than 60 and containing a diazo compound and a coupler, wherein either the diazo compound or the coupler is enclosed in a microcapsule and a process to manufacture it.

Abstract: A recording medium which enables formation of an image on any desired substrate is disclosed, which comprises a support having provided thereon at least a color developer capable of color-forming reaction with a dye precursor, and an adhesive such as heat-sensitive adhesives, tackifying composition, etc.

Abstract: Disclosed is an acceptor coated sheet for pressure-sensitive copying system comprising a base sheet and an acceptor layer disposed thereon, said acceptor layer being formed from an acceptor coating composition comprising(a) at least one immobilizing agent selected from the group consisting of the sulfates, nitrates, acetates and formates of zinc, aluminum and magnesium,(b) a latex of copolymer containing an unsaturated carboxylic acid as a monomer component and, if necessary, a water-soluble binder,(c) an organic acceptor, and(d) at least one pigment selected from the group consisting of zinc oxide, magnesium oxide, titanium oxide, aluminum hydroxide, calcium carbonate, calcium sulfate and kaolin.

Abstract: A substrate for heat-sensitive recording material is disclosed, comprising a film-like substrate made mainly of a synthetic resin and a sheet-like substrate made mainly of a fibrous materials laminated each other with an electron beam-curable adhesive. A heat-sensitive recording material using the above substrate provides an image having excellent quality.

Abstract: In a process for the production of microcapsules by coavervation of gelatin, carboxymethyl cellulose (CMC) and a second anionic polymer such as a polyvinylmethylether/maleic anhydride copolymer or an ethylene/maleic anhydride/copolymer, the weight ratio of gelatin:CMC is chosen to be in the range 1:0.14 to 1:0.05, and the CMC used is chosen to have a viscosity in the range of from 50 to 140 mPas (cps), when measured in 6.0% by weight aqueous solution at 20.degree. C. using a Brookfield RVT viscometer, Spindle No. 1, 10 r.p.m. The use of the specified weight ratio and CMC type permits significant increases in the solids content at which encapsulation can be carried out without increasing process viscosities to an unacceptable extent and/or giving rise to poor quality microcapsules. The process is particularly suitable for producing microcapsules for use in pressure-sensitive copying paper.

Abstract: A transfer recording medium comprises a support and a recording layer formed thereon comprising at least a colorant and a functional component sensitive to provision of light energy and heat energy. The recording layer is composed to have a specifically high sensitivity selective to provision of both light energy and heat energy defined as follows. The adhesion force f.sub.1 between the support and the recording layer and the adhesion force f.sub.2 between the recording layer and a transfer-receiving medium such as plain paper satisfy the relations of f.sub.1 >f.sub.2 at a lower temperature and f.sub.1 <f.sub.2 at a higher heated temperature. A minimum exposure quantity is defined as a minimum quantity of light, with a wavelength to which the functional component in the recording layer is sensitive at 100.degree. C., providing f.sub.1 >f.sub.2 at the higher heated temperature when the recording layer is exposed to the light and then heated. Then, the recording layer provides f.sub.1 <f.sub.

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: Disclosed is a developer sheet useful in forming reproductions having a glossy finish, or in forming transparencies comprising:a support having a layer of a finely divided, thermoplastic, developer material on the surface thereof, said developer material being capable of reacting with a color precursor to produce a visible image and being capable of coalescing into a thin film which imparts gloss to said image upon application of heat and/or pressure, and having a surfactant admixed within said layer of developer material to aid in the coalescing of said developer material into a thin film.

Abstract: A method is described for forming a transparency containing images having high color density comprising the steps of:forming an imaging sheet, said imaging sheet comprising a substrate having a layer of microcapsules on the front surface and on the back surface thereof, of microcapsules containing an internal phase which undergoes a physical change upon exposure to actinic radiation, and a color forming agent which is capable of reacting with a developer-containing resing to form a visible image thereon;simultaneously image-wise exposing said microcapsules on said front and said back surfaces of said imaging sheet to actinic radiation;assembling said exposed imaging sheet between a pair of developer sheets wherein each of said developer sheets comprises a substrate having a layer of developer-containing resin on one surface thereof, said layer of developer-containing resin on each of said developer sheets contacting the adjacent surface of said imaging sheet;subjecting said assembly to a uniform rupturing and

Abstract: A transfer recording medium comprising a substrate and a plurality of image forming elements bonded thereto by a binder is provided. The surface of each image forming element at least partially protrudes out of the binder. Such transfer recording medium may be prepared by applying the binder onto the substrate in a prescribed thickness, disposing the image forming elements in excess on the binder, and then removing the excess of the image forming elements. The thus prepared transfer recording medium provides an image having a high density and a faithfully reproducible color.

Abstract: A heat-sensitive recording material comprising a support and a recording layer provided on the support, said recording layer containing a colorless or pale-colored basic dye and a color developer capable of forming a color upon application of heat, wherein a smectite clay or a combination of a synthetic hectorite clay and soap-free emulsion type binder is incorporated in at least one of layers constituting the recording material.

Abstract: A recording medium enabling formation of an image on any desired material is disclosed. The recording medium comprises a base sheet, a thermoplastic resin layer formed on at least one side of the base sheet, and a color developer layer formed on the thermoplastic resin layer and capable of color development by reaction with a dye precursor.

Abstract: A heat sensitive recording material comprising a substrate and a heat sensitive recording layer thereon incorporating a colorless or light-colored basic dye and a color acceptor reactive with the dye to form a color when contacted therewith, the recording material being characterized in that the material has a heat sensitive recording layer having incorporated therein (1) a heat-fusible substance exhibiting a weight reduction of at least 5% at 200.degree. C. based on the weight at 25.degree. C. under the condition of 20.degree. C./min in the rate of rise of temperature, (2) a wax, (3) a lubricant, and (4) an oil-absorbing pigment at least 85 ml/100 g in oil absorption.

Abstract: This invention relates to a microencapsulated photochromic material and a process for its preparation. More particularly, it relates to a microencapsulated photochromic material having a good durability and a process for its preparation.The present invention further relates to a water-base ink composition comprising said microencapsulated photochromic material.

Abstract: Disclosed is a heat-sensitive recording material comprising a support; a heat-sensitive recording layer formed over the support and containing a color forming material, a color developing material which forms a color on contact with the color forming material and a pigment which is about 80 to about 400 ml/100 g in oil absorption according to JIS K 5101 and about 3 to about 15 .mu.m in average particle size; and an overcoat layer formed over the heat-sensitive recording layer and comprising a binder and a pigment, wherein the pigment is used in an amount of about 0.5 to about 3.0 parts by weight per part by weight of the binder and the coating amount of the overcoat layer is about 0.3 to about 2.0 g/m.sup.2 on dry basis.

Abstract: A heat sensitive copy system uses a magnetic thermal transfer ribbon to transfer images onto an adjacent medium and near infra-red energy is used to transfer the images from the medium onto thermal paper or onto translucent paper for producing multiple copies in a manner which is not thickness sensitive.

Abstract: A heat sensitive recording material which is comprised of a support having thereon at least a transparent heat sensitive layer excellent in freshness-keeping property is disclosed. The transparent heat sensitive layer is obtained by coating a solution obtained by mixing a microcapsule containing a colorless or light colored electron donating dye precursor with an emulsion prepared by dispersing a color developer dissolved in an organic solvent, which is slightly soluble or insoluble in water, into an aqueous solution containing both of a surface active agent and water soluble polymer. The stabilities of emulsion and heat sensitive layer are improved by using a partially saponified polyvinyl alcohol as the water soluble polymer and/or adding a metal salts of a salicylic acid derivatives into the coolor developer. A heat sensitivity of the heat sensitive recording material is improved by using a organic solvent having a boiling point lower than 150.degree. C.

Abstract: A thermosensitive recording material having a thermosensitive color forming layer containing a specific dispersing agent and binder mixture showing a softening point of at least 70.degree. C. can minimize occurrence of head stain at a thermal head in thermosensitive recording. The combination of sulfonic acid-containing polyvinyl alcohol and polyacrylamide or acrylamide-acrylonitrile copolymer is preferable.

Abstract: A recording medium has a recording layer comprising image-forming elements (A), (B) and (C) containing at least a compound having unsaturated double bond and a photopolymerization initiator. The photopolymerization initiator in the element (A) is a compound represented by the following formula (I): ##STR1## (wherein Ar.sub.1 and Ar.sub.2 are ech aromatic ring or heterocyclis ring). The photopolymerization initiator in the element (B) has an absorption maximum in a wavelength region of 360 to 430 nm. The photopolymerization initiator in the element (C) has an absorption maximum in a wavelength region of 430 nm or longer. The recording medium is suitably used as a transfer recording medium in a recording apparatus which includes heating means and light irradiating means to provide the recording layer with heat energy and photoenergy to change the transfer characteristic of the recording layer.

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 light image forming material comprising a support having provided thereon a layer comprising microcapsules containing a leuco dye capable of developing a color through oxidation and a photo oxidizing agent, a reducing agent provided outside the microcapsules, and the layer further comprising carboxy-modified polyvinyl alcohol and epoxidated polyamide resin for imparting high water resistivity.

Abstract: In a heat sensitive recording material comprising a substrate and a heat sensitive recording layer thereon containing a colorless or light-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that an emulsion containing complex particles of colloidal silica and at least one of acrylic polymer and styrene-acrylic polymer is added to a coating composition for the recording layer and/or a coating composition for a protective layer formed on the recording layer.

Abstract: A process for producing microcapsules comprising the steps of: adding a hydroxy or amine functionalized acrylic resin or copolymer to an aqueous emulsion including a dispersed internal phase composition;simultaneously or subsequently adding a formaldehyde condensate prepolymer to said emulsion; andforming interpenetrating polymer network microcapsule walls around said internal phase, said interpenetrating polymer network microcapsule walls comprising the condensation reaction product of said functionalized acrylic resin or copolymer and said formaldehyde condensate prepolymer is disclosed.

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 composition for use in a thermal-sensitive paper coating and a heat-sensitive recording material utilizing the coating, which composition comprises a phenolic developer, e.g., a traditional low speed phenolic having a melting point greater than 120.degree. C., and a pseudo developer. The pseudo developer is combined with the phenolic developer in an amount effective to provide for the formation of homogenous phase when the composition is melted, which phase further solidifies back to a single crystalline phase when cooled.

Abstract: A multicolor recording material having on one side of a support at least two layers capable of producing colors different from each other in hue through respective color-producing reactions, which further has an interlayer constituted by a water-soluble polyanionic polymer having gelled through the interaction with a polycation between every adjacent two of said color-producing layers to prevent migration of ingredients from one color-producing layer to another.

Abstract: A light-sensitive image forming method using a recording element which comprises a recording layer on a support is disclosed. The recording layer contains at least two active components of a photopolymerizable composition such as a polymerizable compound and a polymerization initiator, both of which are essential for a photopolymerization reaction. The components are separated from each other by the shell of microcapsules in such manner that at least one component is contained in the microcapsules which are dispersed in the recording layer and the other component is arranged outside of the microcapsule. The image forming method comprises the steps of: heating the recording element to form the photopolymerizable composition in the recording layer; and imagewise exposing to light the recording element to imagewise polymerize the photopolymerizable composition.

Abstract: The photosensitive, pressure-sensitive recording sheet of plain paper transfer type of the present invention can be obtained by coating on a substrate, microcapsules mainly containing a photocurable resin and a reactant. This photosensitive, pressure-sensitive sheet can conduct multicolor transfer recording on a plain paper and accordingly has a very high industrial value in light of recent request for transfer recording of color manuscripts.

Abstract: An image-forming material comprising: (a) microcapsules, in which at least one leuco dye capable of developing a color by oxidation and at least one photooxidizing agent (preferably a combination of a lophine dimer and an organic halogeno-compound) are enclosed together, and (b) at least one reducing agent not enclosed in the microcapsules (preferably present in the form of an emulsified dispersion), thereby achieving image formation in a completely dried condition, and ensuring excellent freshness keeping property, image reproducibility and fixability.

Abstract: The present invention provides a method of making a concavo-convex pattern such as a fingerprint on a given sheet without soiling the pattern with color, and a set for making the pattern.

Abstract: A recording sheet which comprises a substrate having a layer of a metal on the surface thereof and a layer of microcapsules, said microcapsules being bonded to one another by means of a crosslinking agent which has reactively interacted with reactive moieties on the surface of said microcapsules, to improve the adhesion of said microcapsule layer to said metal layer.

Abstract: A light-sensitive material comprising a light-sensitive layer containing silver halide, a reducing agent, a polymerizable compound and a leuco dye provided on a support, characterized in that the leuco dye has the following formula (I): ##STR1## in which each of R.sup.1 and R.sup.2 independently is hydrogen, an alkyl group, a cycloalkyl group, an aralkyl group or an aryl group, or R.sup.1 and R.sup.2 together with the neighboring nitrogen atom form a 5- or 6-membered ring; X is hydrogen, a halogen atom, an alkyl group, an alkoxy group, --NHCOR.sup.3 or --OCOR.sup.4 (each of R.sup.3 and R.sup.4 is an alkyl group or an aryl group) or --NR.sup.5 R.sup.6 (R.sup.5 and R.sup.6 have the same meanings as for R.sup.1 and R.sup.2); Y is an alkyl group or an aralkyl group; Z is hydrogen, an alkyl group or an aryl group; and each of R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, X, Y, Z and the benzene ring A may have one or more substituent groups.

Abstract: Pressure sensitive carbonless transfer sheets are made capable of producing clear images by light impact marking means in multi-part carbonless forms packs containing at least six of the sheets, such as 8-12 sheets, by coating a chromogenic material onto a paper sheet characterized by a basis weight of 9-12 lbs of a ream of 500 sheets of paper each having dimensions of 17 by 22 inches, a thickness of 40-50 microns, a Gurley porosity of 400-4000 seconds, and a Bendtsen smoothness of 90-260 ml/min on the wire side and 60-280 ml/min on the felt side. Bar codes are also transferrable with good scannability through forms packs containing three or more sheets.

Abstract: An improved in-situ polymerization method is provided for easily producing a good slurry of strong, dense, water-resistant and anti-hygroscopic microcapsules made of an amino resin of either of melamine-formaldehyde series or the ureaformaldehyde series, in a high concentration of microcapsules, and a low viscosity.

Abstract: A multicolor heat-sensitive recording material which comprises a transparent support having two or more of color-producing unit layers differing in hue of the produced color in such a situation that at least one unit layer is provided on each side of the support, wherein at least one color-producing unit layer is essentially transparent, namely, Haze % of said transparent layer is less than 40% and a multicolor heat-sensitive recording material further provided a transparent protective layer on the outermost color producing unit layer are disclosed.

Abstract: A receiver sheet for producing high density images, preferably in a photosensitive imaging system is disclosed. The receiver sheet is characterized by containing a particulate developer material which does not substantially compress upon the application of pressure. The resistance to pressure is accomplished by using a receiver sheet which has a discontinuous thickness or by incorporating a stilt material into the developer material. Also disclosed is an imaging system which has a discontinuous thickness donor sheet to prevent the developer material from substantially compressing upon the application of pressure.

Abstract: In a heat sensitive recording material comprising a substrate and a heat sensitive recording layer thereon incorporating a colorless or light-colored basic dye and a color acceptor which is reactive with the dye to form a color when contacted therewith, the recording material characterized in that at least one of the compounds of the formula (I) is contained in the heat sensitive recording layer ##STR1## wherein R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are same or different and are hydrogen atom, halogen atom, C.sub.1 .about.C.sub.5 alkyl or C.sub.1 .about.C.sub.5 alkoxyl.

Abstract: A heat-sensitive recording material is disclosed. The material comprises a support having provided on the same surface thereof microcapsules containing a basic colorless dye and an organic solvent, and a developer capable of reacting with the basic colorless dye to develop a color, the capsule walls of said microcapsules being impermeable to either of the basic colorless dye and the developer at room temperature but becoming permeable to the colorless dye and/or the developer upon application of heat. The organic solvent is a compound containing at least two benzene rings in the molecule thereof with a total number of at least one hetero atom selected from nitrogen, sulfur, oxygen and phosphorus atoms, if any, being less than 1/10 a total number of carbon atoms of the organic solvent. The material is excellent in preservability before and after recording and is excellent in heat-developability.

Abstract: An image-forming material and an image recording method for using the same are disclosed. The image-forming material comprises microcapsule and a reducing agent which is present outside of the microcapsules, wherein the microcapsules contain (a) a leuco dye capable of oxidatively developing a color, (b) a photo-oxidizing agent, and (c) a phenolic compound. The image-forming material exhibits excellent image reproducibility, preservability before use, and image preservability.

Abstract: A method for producing images utilizing photohardenable microcapsules and a reversal phenomenon is disclosed. The microcapsules contain a color former, a photopolymerizable or cross-linkable monomer and a photoinitiator. A substrate containing the microcapsules is image-wise exposed to a high intensity, short term exposure of actinic radiation to cause reversal in the exposed microcapsules. The substrate is then given an overall exposure to polymerize the microcapsules which had not completely reversed. The microcapsules are then ruptured in the presence of a developer material to produce a negative image. In addition the inventive method may be used to produce copies by a "direct-write" copying process.

Abstract: A no-carbon pressure-sensitive copying paper obtained by coating a composition containing an alkali thickening type copolymer latex as a binder on a support is excellent in color forming properties, resistance to smudge and high concentration coating suitability.

Abstract: A method for forming a full color photosensitive material in a single batch and the material produced thereby is disclosed. The method includes dispersing three internal phases, each containing a different color-forming agent in a continuous solution to form an emulsion, and thereafter forming microcapsule walls around each of the internal phases. The invention is particularly characterized by the use of an agent to control intermixing of the internal phases.

Abstract: A thermosensitive recording material is disclosed, which comprises (a) a support, (b) an undercoat layer formed on the support, which comprises spherical hollow particles made of a plastic material having a glass transition temperature ranging from 40.degree. C. to 90.degree. C., the spherical hollow particles having a mean particle diameter of 0.20 .mu.m to 1.5 .mu.m, and a voidage of 40% to 90%, and a binder resin in an effective amount, and (c) a thermosensitive coloring layer formed on the undercoat layer, which comprises as the main components a leuco dye and a color developer capable of inducing color formation in the leuco dye upon application of heat thereto.

Abstract: A heat-sensitive recording material obtained by coating on a support a composition comprising a microcapsulated colorless or light colored color-forming substance which can develop its color by reaction with an organic base, and an emulsified dispersion prepared by emulsifying an organic base dissolved in an organic solvent insoluble or slightly soluble in water, then drying the coat.

Abstract: The front side of at least one receptor sheet of a pressure-sensitive multi-part record unit comprises microporous material comprising a matrix consisting essentially of substantially water-insoluble thermoplastic organic polymer, a large proportion of finely divided, water-insoluble siliceous particles, and interconnecting pores.

Abstract: A heat-sensitive recording material is disclosed. The material comprises a support and a heat-sensitive recording layer, between which is provided an undercoat layer which comprises a first layer comprising urea-formaldehyde resin and a second layer comprising a pigment provided on the first layer. The first layer may additionally contain a pigment.

Abstract: A light-sensitive material comprises a light-sensitive layer which contains silver halide, a reducing agent and an ethylenic unsaturated polymerizable compound provided on a support (the silver halide and polymerizable compound are contained in microcapsules which are dispersed in the light-sensitive layer), characterized in that the microcapsules have an average particle size (volume average particle diameter) of 8.5 to 20 .mu.m and the following specific particle size distribution. The amount of the microcapsules having a particle size of not larger than one-sixth part of the average particle size is not more than 1 volume % of the total amount of the microcapsules and the amount of the microcapsules having a particle size of not smaller than twice as large as the average particle size is not more than 1 volume % of the total amount of the microcapsules.