Abstract: A method for manufacturing a solid-state image capturing apparatus including a pixel array constituted of a plurality of pixels, is provided, where each of the plurality of pixels includes a photoelectric conversion section, the method comprising the steps of: forming an impurity diffusion area in a surface area of a semiconductor substrate; and forming a plurality of different impurity diffusion areas in the surface area of the semiconductor substrate, other than the impurity diffusion area constituting the photoelectric conversion section.

Abstract: An image recording medium comprising a light and heat change material capable of recording an image with laser beam is described, characterized in that therein are incorporated a heat generator having no absorption at a wavelength of 500 nm or more which undergoes exothermic decomposition to amplify heat generation when acted upon by heat and a compound which undergoes thermochemical reaction to show an absorption change at a wavelength of from 360 nm to 900 nm.

Abstract: Selectively colorable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising a leucobase color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color former. Exposure to higher dosages of actinic radiation can bleach the composition. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.

Abstract: Selectively colorable polymerizable compositions and a method for forming selectively colored polymeric bodies using such compositions are disclosed. In accordance with the invention, a selectively colorable polymerizable composition comprising both a leucobase color former and a leuconitrile color former is irradiated with light of a particular wavelength and specific intensity for a specified duration. Exposure to actinic radiation cures the composition and activates the color formers. The irradiation dosage can be varied to selectively color the polymeric body whereby the resultant color of any particular area depends on the exposure dose received at that location. By varying the dose, a polymeric body can be prepared having distinctly colored elements at specific locations.

Abstract: Novel thermally imageable monochrome product compositions, elements, and processes are disclosed herein. These compositions and elements characteristically have high contrast and fast imaging speeds. The thermally imageable compositions of this invention comprise (a) at least one near IR-absorbing dye having the structure given in the specification; (b) at least one HABI compound; (c) at least one leuco dye; (d) at least one acid-generating compound; and (e) a polymeric binder. Optionally at least one UV stabilizer and/or at least one inhibitor of color formation can also be present. These compositions have the propensity for affording, upon imaging, highly colored images having high optical density values. At the same time, background color is low in preferred compositions even after extensive exposure to ambient light. These compositions are imagewise exposed to near IR radiation from a laser or other device to effect color formation (i.e., generation of an image).

Abstract: A photosensitive recording medium comprising a base material and formed thereon a photosensitive layer containing at least yellow color-forming particles containing a first photosensitive component having a maximum hardening sensitivity to light with wavelength L1, magenta color-forming particles containing a second photosensitive component having a maximum hardening sensitivity to light with wavelength L2 and cyan color-forming particles containing a third photosensitive component having a maximum hardening sensitivity to light with wavelength L3. All the wavelengths L1, L2 and L3 are wavelengths longer than 500 nm.

Abstract: Novel thermally imageable monochrome product compositions, elements, and processes are disclosed herein. These compositions and elements characteristically have high contrast and fast imaging speeds. The thermally imageable compositions of this invention comprise (a) at least one hexaarylbiimidazole (HABI) compound, (b) at least one leuco dye, (c) at least one acid-generating compound, (d) a polymeric binder, (e) optionally at least one UV stabilizer and/or at least one inhibitor of color formation, and, in certain embodiments, (f) at least one near IR-absorbing dye. These compositions have the propensity for affording, upon thermal imaging, highly colored images having high optical density values. At the same time, background color is low in preferred compositions even after extensive exposure to ambient light. These compositions can be imagewise heated to effect color formation (i.e.

Abstract: Photoimageable compositions, photoimageable resist compositions, and photoimageable resist elements that afford enhanced, storage stable printout images are disclosed which include a substituted 1,2-dibromoethane and a leuco dye.

Abstract: Disclosed herein is a photosensitive composition comprising:(A) 5 to 60 wt % of an o-quinonediazide compound;(B) 0.05 to 10 wt % of an s-triazine compound(C) 0.01 to 10 wt % of a dye for changing the color tone by the interaction with the photodecomposition product of the said s-triazine compound;(D) 30 to 90 wt % of a novolak resin containing less than 5 wt % of phenols; and(E) 1 to 60 wt % of a vinyl-based polymer having at least a phenolic hydroxyl group.

Abstract: Phothermographic material capable of producing a high density cyan image upon image-wise exposure and thermal development at a relatively low temperature and for a short period of time. The photothermographic material of the invention comprise coated on a support base at least one light-sensitive emulsion layer containing: (a) a binder; (b) a silver source material; (c) a light sensitive silver halide in catalytic proximity to said silver source material, wherein said emulsion layer or an adjacent layer thereto comprises a chromogenic cyan leuco dye.The photothermographic material of the invention may be used to obtain good cyan image of suitable density in single color or multicolor photothermographic articles. At the same time the chromogenic leuco dye is stable enough not to be oxidized by oxygen of the air or by simple heating and to limit the fog formation after development.

Abstract: A color-change dosimeter film made of a halogen-containing polymer in which is dispersed an acid-sensitive leuco dye, which dye a) is substantially free from groups that are sensitive to high-energy radiation and b) becomes colored in acid. This color-change dosimeter film (1) remains substantially colorless upon exposure to artificial illumination, including fluorescent light, for at least several months, (2) becomes colored upon exposure to high-energy radiation and accurately indicates small changes in dosage by the intensity of its color, and (3) remains substantially unchanged in its intensity of that color after being stored for several months, whether or not exposed to artificial illumination. An article of either quantitative or qualitative determination of the extent of high-energy radiation exposure is also provided, displaying a colored message of words, codes, symbols, or patterns on a substrate after exposure to the high-energy radiation.

Abstract: A photothermographic composition is disclosed comprising a sensitizing dye and the salt of an oxidizing acid and a leuco dye, wherein said acid consists of a Group V, VI, or VII element and oxygen.

Abstract: Negative-acting photothermographic imaging systems with improved color fidelity and light fastness are disclosed comprising a photobleachable sensitizer, a nitrate salt, an initiator, a leuco dye, a binder, and an optional organic acid. These systems may be used in a variety of applications comprising single or multiple layers in either single or multiple sheet constructions to provide color imaging elements.

Abstract: Photothermographic imageable layers comprise a photobleachable dye, a nitrate salt, a leuco dye, a binder, and an optional organic acid. These systems may be used in a variety of applications comprising single or multiple layers in either single or multiple sheet constructions to provide color imaging elements.

Abstract: Novel thermally sensitive imageable layers comprising a leuco dye oxidizing acid salt are disclosed, wherein said acid consists of a Group V, VI, or VII element and oxygen.

Abstract: A radiation-sensitive compound has the general formula ##STR1## wherein A represents the ring members required to complete a 5- or 6-membered heterocyclic ring which may optionally be fused to an optionally substituted aromatic nucleus,B represents H, acyl, aroyl, heterocyclyl carbonyl or ##STR2## R represents an optionally substituted alkyl group, E and G, which may be the same or different, each represents H or CH.sub.p X.sub.3-p,J and K, which may be the same or different, each represents an aryl or heterocyclic group, which may optionally include a substituent additional to E or G,X represents Cl or Br, and m,n and p, which may be the same or different, each represents an integer equal to 0, 1 or 2.The compound can be used to form radiation sensitive compositions for the production of radiation sensitive plates in lithographic printing plate manufacture.

Abstract: Disclosed are photothermographic constructions containing at least a plurality of light-sensitive layers which are separated by barrier layers composed of a polymer, e.g., ethyl cellulose and polyethylene terephthalate, having an energy activation of permeability (E.sub.p) of less than about 30 kJ/mole. The barrier layers must be substantially insoluble in the light sensitive layers and vice versa. Each light sensitive layer contains a nitrate salt, leuco dye, binder, and optionally, a photoinitiator. The photothermographic construction is capable of effectively reproducing full color images.

Abstract: A light-sensitive composition is herein disclosed, which comprises at least one free radical generator represented by the following general formula: ##STR1## and at least one discoloring agent which interacts with products generated through the photolytic degradation of the free radical generator to change the color tone of the composition. The composition has a high stability with time and a good printing out property and therefore it can be used in making light-sensitive layer of PS plates, photoresists, proof plates for printing and films for overhead projector, intermediate print and photomask having high sensitivity long shelf life.

Abstract: A hologram is directly recorded in a sensitized metal substrate. The hologram may be an amplitude hologram, or may be treated to produce a phase relief hologram which may be stamped into a plastic material for reproduction, be archivally stored, or used as a master for electroforming a second durable surface relief hologram for use as an embossing master. A suitable material is prepared from a polished silver plate exposed to halogen vapors. After exposure, the plate is developed and fixed, and the surface is differentially etched to form a surface relief suitable for hologram embossing. Daguerreotype processes are modified to make surface amplitude holograms and phase holograms. By etching through a metal film a semiconductor mask is obtained. By depositing a silver film directly on a wafer, masks are made with very high feature definition.

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: A silver halide photosensitive material comprising a support having thereon a layer containing (a) an organic compound which releases a free radical on contact with light rays and (b) a compound which undergoes a change in the absorption spectrum due to the action of the released free radical.

Abstract: A radiation-sensitive mixture, in particular photosensitive mixture, is disclosed that contains a compound which forms a strong acid on exposure to actinic radiation and a polymeric reaction product of (i) a polymeric organic compound containing free OH groups, (ii) an organic compound containing at least two isocyanate groups or at least two epoxy groups, and (iii) a compound containing repeating acid-cleavable acetal or ketal groups and at least one free OH group. The mixture yields printing plates or photoresists with a longer storage life.

Abstract: A thermosensitive recording method which comprises heat-treating compounds A and B constituting a coloring matter resulting in sublimation or evaporation to thereby bring these two compounds into contact with each other on a recording sheet, resulting in a color image on the recording sheet.

Abstract: The invention relates to a multilayered image receptive film developed in distinguishable colors by kinetic energy imparted by radiant beam exposure which comprises (a) a first imaging layer composed of an aliphatic, polymeric binder containing from about 40 wt. % to about 70 wt. % of labile halogen, said binder capable of dehydrohalogenation at address points of radiant energy exposure and having dispersed therein a first polyphenylmethane compound capable of forming a first halide salt dye upon generation of hydrogen halide from said binder; (b) a second imaging layer similar to said first imaging layer and contiguously disposed below said first imaging layer, containing a second and distinct polyphenylmethane compound capable of forming a halide salt dye of a color distinguishable from that of said first halide salt dye and (c) a conductive support for layers (a) and (b).

Abstract: A photosensitive article comprises a substrate of a triacetate or other polyester film or paper coated with a layer of a photosensitive composition. The photosensitive composition includes at least one photodissociable choline compound sensitive to x-rays or radiation of shorter wave lengths, at least one image-forming compound capable of producing a dye by reaction with the dissociation products of the choline compound, a water soluble polymeric binder and a low melting point fatty acid salt for heat development. The photosensitive article can be used to produce an x-ray image by exposing the article image-wise to x-rays and heating the exposed article to develop the image.

Abstract: The invention relates to a multilayered image receptive film capable of being developed in distinguishable colors by kinetic energy imparted by radiant beam exposure which comprises (a) a first imaging layer composed of an aliphatic, polymeric binder containing from about 40 wt. % to about 70 wt. % of labile halogen, said binder capable of dehydrohalogenation at address points of radiant energy exposure and having dispersed therein a leuco base polyphenylmethane compound capable of forming a halide salt dye as a first color upon generation of hydrogen halide from said binder; (b) a separate imaging layer composed of a base film containing a photosensitive polyacetylenic compound having at least two acetylenic linkages in a conjugated system and contiguously disposed below said first imaging layer capable of forming a dye of a color distinguishable from that of said halide salt dye and (c) a conductive support for layers (a) and (b).

Abstract: Light-sensitive compounds are described which have the formula ##STR1## wherein R.sup.1 and R.sup.2 denote H or alkyl, R.sup.3 and R.sup.4 denote H or 4,6-bis-trichloromethyl-s-triazin-2-yl, R.sup.5 and R.sup.6 denote H or halogen, alkyl, alkenyl or alkoxy, and Ar denotes a mononuclear to trinuclear aromatic group.These compounds are suitable as photoinitiators for free-radical polymerizations or as photolytic acid donors for acid-cleavable compounds, and for cross-linking and color formation reactions. They are distinguished by a high sensitivity in various spectral ranges.

Abstract: The invention provides new compositions which change color on exposure to actinic radiation and contain a photosensitive onium, e.g. iodonium or sulphonium, salt and a dyestuff which changes color when protonated. The compositions may also include a resin, especially a resin curable by the onium salt when the latter is exposed, and preferably an epoxy resin. The compositions are useful especially as coatings, e.g. for making screen stencils or for producing lithographic printing plates.

Abstract: Photoimaging compositions comprising (a) substituted dibromoethane as defined, e.g., 1,2-dibromotetrachloroethane, 1,2-dibromo-1,1-dichloroethane, etc. and (b) leuco dye. Photoimaging photopolymerizable compositions consist essentially of (a) substituted 1,2-dibromoethane as defined, (b) leuco dye, (c) at least one ethylenically unsaturated compound, (d) photoinitiator taken from the group consisting of -4-trichloromethyl-4-methyl-2,5-cyclohexadienones, benzophenones, alkylaryl ketones, and mixtures thereof; and optionally (e) at least one organic polymeric binder. The compositions are useful to provide a printout image and in admixture with a variety of initiators or initiator systems and ethylenically unsaturated compounds provide photopolymerizable compositions having good printout images.

Abstract: Images can be formed on a receptor sheet by transfer of a dye image. The positive dye image is formed by bleaching of dye with an iodonium ion. The positive dye image is then transferred by sublimation or diffusion onto a receptor sheet.

Abstract: Photoimaging composition comprising an admixture of leuco dye, and at least one 2,4,5-triphenylimidazolyl dimer prepared by an oxidative coupling reaction, a reaction product, 2,2',5-tris-(o-chlorophenyl)-4-(3,4-dimethoxyphenyl)-4',5'-diphenylbiimida zole, being present in an amount of 0.01 to 90.0% by weight based on the weight of solids in the composition. The composition when coated on a support is useful for prepress proofing.

Abstract: A print-out composition containing a leuco dye and a photooxidizing agent is described, said print-out composition containing at least one carbazomethane compound represented by formula (I) as the leuco dye ##STR1## wherein Y represents an amino group-substituted phenyl group represented by formula (Ia) ##STR2## or an indolyl group represented by formula (Ib) ##STR3## wherein X.sub.1 and X.sub.2 each represents a hydrogen atom, an unsubstituted alkyl group, or an alkyl group substituted by a halogen atom, a hydroxy group, a cyano group, or a lower alkoxy group, said alkyl group having up to 12 carbon atoms, a cycloalkyl group, a phenyl group, a benzyl group, or a phenyl or benzyl group substituted by a halogen atom, a lower alkyl group, or a lower alkoxy group, or said X.sub.1 and X.sub.2 together may form a 5-membered or 6-membered heterocyclic group together with the nitrogen atom bonded thereto; X.sub.

Abstract: Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a colorformer capable of changing color upon contact with a suitable activator and a latent activator containing an organic halide will become insoluble and change color under the influence of actinic radiation. The organic halide is a carbonylic compound such as an aliphatic or cycloaliphatic ketone or an ester or amide of a dicarboxylic acid. The compositions are useful to make resists used in the electronics industry to manufacture printed circuits.

Abstract: An image-forming photosensitive composition comprises:(a) an organohalogen compound capable of forming a free radical by the irradiation with light,(b) a substantially colorless dye which colors when it is contacted with an acidic substance,(c) an aromatic amine and/or conjugated nitrogen-containing heterocyclic compound,(d) a binder, and(e) an aliphatic amine and/or alicyclic amine.

Abstract: A thermally developable imaging system comprises a leuco dye, nitrate ion, and a spectrally sensitized organic compound having photolyzable halogen atoms.

Abstract: Disclosed is a light-sensitive mixture comprising (a) a 1,2-quinonediazide or a mixture of (a.sup.1) a compound forming an acid on exposure and (a.sup.2) a compound having at least one C--O--C bond cleavable by acid; (b) a water-insoluble binder soluble in aqueous-alkaline solutions; (c) an organic compound forming an acid on exposure of the general formula I ##STR1## in which X is a single bond or one of the groups CO, SO.sub.2, N=N or CR.sup.7 R.sup.8, R.sup.1, R.sup.2, R.sup.3 and R.sup.4 are hydrogen atoms, halogen atoms or nitro groups, with not more than two of these radicals being hydrogen atoms and at least one thereof being a nitro group, R.sup.5 and R.sup.6 are hydrogen atoms or 1,2-naphthoquinone-2-diazide-4-sulfonyloxy radicals, with R.sup.5 and R.sup.6 being always different from each other, and R.sup.7 and R.sup.8 are hydrogen atoms or lower alkyl radicals, and (d) an azo dyestuff containing at least one nitro group in the molecule.

Abstract: Disclosed is a light-sensitive mixture comprising (a) a 1,2-quinonediazide or a mixture of (a.sup.1) a compound forming an acid on exposure and (a.sup.2) a compound having at least one C--O--C bond cleavable by acid; (b) a water-insoluble binder soluble in aqueous-alkaline solutions; (c) a photolytically cleavable organic halogen compound of one of the formulae ##STR1## in which R.sup.1 denotes an aromatic radical bonded directly or via a conjugated chain, and X denotes a halogen atom; and (d) an azo dyestuff containing at least one nitro group in the molecule. Also disclosed are light-sensitive copying materials produced from these mixtures.

Abstract: Permanent records of X rays or radiations of shorter wavelengths are formed on a film substrate by direct exposure to the radiation and heat development. The process is not sensitive to visible radiation and can therefore be carried on in daylight. An X ray photosensitive film containing a halogenated photodegradable polymer and an aryl dye promoter reacting to free radicals is exposed to an X ray image and then heated under conditions which allow the free radical generated by the photodegradation of the polymer to migrate and react with the aryl dye promoter to provide the imaging dye. The X ray photosensitive layer of the X ray photosensitive film or paper includes, in addition to the photodegradable polymer and the aryl dye promoter, a heat activable complexing agent and an organic binder. The process can be carried out using currently available X ray equipment with the advantage of handling the film in daylight and eliminating chemical development.

Abstract: A pin-shaped connecting element for connecting toy structural elements each having at least two openings, has an elongated body part which can be received in one opening of the structural elements and has an elongated slot and a plurality of transverse slots subdividing the body part into a plurality of independently resiliently yieldable sections, and an arresting member insertable in an intersecting opening of the structural elements and engageable into a respective one of the transverse slots so as to arrest the elongated body part in the structural elements. The arresting member may have one or two projections engaging in one or two transverse slots in the region of the transverse opening.

Abstract: A thermally developable imaging system comprises a leuco dye, nitrate ion, and a spectrally sensitized compound selected from (1) aromatic iodonium salts and (2) compounds of photolyzable halogen atoms.

Abstract: A photosensitive material having a photosensitive layer provided on a support which photosensitive layer comprises a photosensitive compound which forms a color dye directly under irradiation of ultraviolet rays, the compound being represented by the formula [i]: ##STR1## wherein [COUP] represent a 4-equivalent yellow, magenta or cyan coupler from which a hydrogen is removed at a coupling position thereof, B is a hydroxy group or ##STR2## wherein R.sup.6 and R.sup.7 are individually an alkyl group or they may form a 1-piperidino, 1-piperazino, 1-pyrolidino or 4-morpholino group together with each other,R.sup.1 is an alkyl, aryl, alkylamino or arylamino group, and R.sup.2, R.sup.3, R.sup.4 and R.sup.5 individually are a hydrogen or halogen atom or aliphatic or aromatic group, or R.sup.2 and R.sup.3 may be fused to form a naphthalene ring.

Abstract: Oxoindolizine and oxoindolizinium dyes are useful in photographic materials and processes as image dyes. These dyes are formed in unexposed areas of photographic materials, especially photothermographic materials, by the reaction of a photosensitive cyclopropenone with a pyridine compound. Oxoindolizine and oxoindolizinium dyes are alternatively formed by (1) reaction of a photosensitive cyclopropenone with a pyridine compound and (2) reaction of the resulting product with a color forming coupler. The photographic material is imagewise exposed and then heated to a processing temperature to form a dye image. Alternatively, the oxoindolizine and oxoindolizinium dyes are produced by imbibing at least one of the reactants into the photographic material comprising a photosensitive cyclopropenone.

Abstract: A non-silver light-sensitive composition according to the invention consists of the following components, in percent by weight;______________________________________ a hydroxyderivative of naphthalene 1 to 10 an aromatic amine 29 to 60 saturated halogenated hydrocarbon 35 to 29 a polymeric binder 35 to 1. ______________________________________The composition of the present invention makes it possible to produce light-sensitive layers which have an increased sensitivity (2.times.10.sup.-4 J/cm.sup.2 at 365 nm) and a low optical fog density (D. below 0.05).

Abstract: The invention relates to high resolution video storage disks comprising a substrate having disposed thereon a film of a monofunctionalized substituted tetraheterofulvalene compound and a halocarbon. The tetraheterofulvalene compound can have the molecular formula ##STR1## where X can be S and/or Se R can be an alkyl group having from about 1 to about 8 carbon atoms or a benzyl group wherein said benzyl group can be a part of a polymer chain;and Y can be either an ester or an ether.

Abstract: This invention relates to a radiation-sensitive, silver-free recording material for direct optical recording with high sensitivity, characterized by its exceptional resistance to light and heat and large solubility. This is achieved by the fact that the recording material contains as coloring substances, azo dyestuffs of the general formula ##STR1## R.sub.1, R.sub.2, R.sub.3, R.sub.4, R.sub.5 are the same or different and are halogen, alkoxy, alkyl, acetyl, amino; R.sub.8 hydroxy, alkoxy or acetylamino. The material distinguishes itself by the different processing variations that are possible so that with a same basic type, it is possible to obtain pictures operating according to a positive principle as well as according to a negative principle.

Abstract: Compositions containing a polymerizable, curable or crosslinkable component, a photoinitiator, a fluoran colorformer and a latent activator that releases or promotes the release of a Lewis acid, will become insoluble and change color under the influence of actinic radiation. These compositions are particularly useful to make dry film photoresists, which are widely used in the electronics industry to manufacture printed circuits.

Abstract: Photoimaging compositions comprising (A) a cyclohexadienone compound as defined, and at least one of (B.sub.1) a leuco dye or (B.sub.2) addition polymerizable ethylenically unsaturated monomer. A polymer binder can be present in the compositions. The new imaging compositions are useful in photoimaging products such as proofing papers, printout papers, overlay films and photopolymerizable elements useful for printing and photoresist purposes. The compositions have improved thermal stability.

Abstract: Novel E-beam resists and process for their use are described. These resists are conducting organic charge transfer salts. Films of these materials can be deposited by solvent casting or by sublimation. The deposited film can be made to produce a positive or negative resist image depending on the E-beam energy and exposure time. Exposure of this material to an E-beam produces patterns having differential electrical, optical and solvation properties.

Abstract: Novel E-beam resists and process for their use are described. These resists are conducting organic charge transfer salts. Films of these materials can be deposited by solvent casting or by sublimation. The deposited film can be made to produce a positive or negative resist image depending on the E-beam energy and exposure time. Exposure of this material to an E-beam produces patterns having differential electrical, optical and solvation properties.

Abstract: A photo-sensitive and heat-sensitive composition consisting essentially of a leuco-pigment; a hydrogen donator; a photo-reductant which, when exposed to a visible light, produces a reducing agent by the action of said hydrogen donator coexisting therewith; a photooxidant which, when exposed to an ultraviolet ray, causes said leuco-pigment coexisting therewith to generate color and simultaneously, when reacted with said reducing agent, is deprived of its own oxidizing ability; and a cobalt complex which reacts with the reducing agent in amplifying manner to thereby suppress the reaction of a color-forming system, and a recording element using the same.