| Patent Number |
Title Of Patent |
Date Issued |
| 5693374 |
Alpha-resorcyclic acid ester derivatives and recording materials using the same |
December 2, 1997 |
| .alpha.-resorcylic acid ester derivatives useful as electron-accepting compounds for recording materials, and highly durable recording materials containing these derivatives. The .alpha.-resorcylic acid derivative is represented by the following general formula (I), ##STR1## wher |
| 5679494 |
Heat-sensitive recording material comprising a diazonium salt, a coupler and a benzotriazole com |
October 21, 1997 |
| A heat-sensitive recording material comprising a support having thereon a heat-sensitive recording layer and a protective layer in this sequence, said heat-sensitive recording material containing a compound represented by formula (1), (2), (3), or (4): ##STR1## |
| 5663212 |
Light-sensitive resin composition |
September 2, 1997 |
| A light-sensitive resin composition which can be developed in an alkaline aqueous solution and has an excellent image-forming performance and a sufficient UV absorbance after an image formation is disclosed. The light-sensitive resin composition includes (1) a photopolymerization ini |
| 5576441 |
Photosensitive bis(halomethyloxadiazole) compound and photosensitive transfer sheet using the sa |
November 19, 1996 |
| Photosensitive bis (halomethyloxadiazole) compounds which are capable of producing free radicals upon exposure to light represented by the following general formulae (1) to (4): ##STR1## The symbols in the above formulae are defined in the present specification. The photosensitiv |
| 5484682 |
Light-sensitive bistrihalomethyl-s-triazine compound and photopolymerizable composition containi |
January 16, 1996 |
| A novel light-sensitive bistrihalomethyl-s-triazine compound is provided, which is represented by the general formula (I): ##STR1## wherein T represents a (4,6-bistrihalomethyl-s-triazine-2-yl) group; Y represents a divalent group; and the benzene rings may further contain substi |
| 5480765 |
Recording material |
January 2, 1996 |
| A recording material employing an electron-donating achromatic dye and an electron-accepting compound, which further contains at least one triarylamine derivative represented by general: formula (1), (2), (3) or (4); ##STR1## wherein all the symbols are defined in the specificati |
| 5464804 |
Thermal recording material |
November 7, 1995 |
| Disclosed is a thermal recording material having, on a support, a heat-sensitive coloring layer containing an electron-donating colorless dye, an isocyanate compound and an amino compound. The storage stability of the raw stock material as well as the color image stability of the mat |
| 5424164 |
Image forming method |
June 13, 1995 |
| A recording material which comprises a support having provided thereon capsules containing a photosensitive diazonium salt, and a polymerizable coupler. The recording material can give a predetermined hue when light, pressure, heat and the like are applied alone or in combination. The ma |
| 5362874 |
Light-sensitive bistrihalomethyl-s-triazine compounds |
November 8, 1994 |
| A novel light-sensitive bistrihalomethyl-s-triazine compound is provided, which is represented by the general formula (I): ##STR1## wherein T represents a (4,6-bistrihalomethyl-S-triazine-2-yl) group; Y represents a divalent group; and the benzene rings may further contain substi |
| 5340606 |
Optical reading method |
August 23, 1994 |
| A method of optically reading colored record images formed by the reaction of a substantially colorless electron donating dye and an electron accepting developer in a pressure-sensitive recording sheet with a red light having a wavelength of from 620 nm to 700 nm, wherein the pressur |
| 5334749 |
Polymerizable phenol compound |
August 2, 1994 |
| A polymerizable phenol compound represented by the formula (I): ##STR1## wherein X represents a hydrogen atom, an alkyl group, a halogen atom, an alkylsulfonyl group, a hydroxyl group or a substituted or unsubstituted phenyl group; Y represents a hydrogen atom, a hydroxyl group, an |
| 5288688 |
Thermal recording material |
February 22, 1994 |
| Disclosed is a thermal recording material having, on a support, a heat-sensitive coloring layer containing an electron-donating colorless dye, an isocyanate compound and an amino compound. The storage stability of the raw stock material as well as the color image stability of the mat |
| 5286703 |
Heat-sensitive recording material |
February 15, 1994 |
| A heat-sensitive recording material comprising a support having thereon a color-developing layer and at least one UV-absorbing layer with a light-transmittance of 70% or less at 400 nm, 5% or less at 370 nm, and 70% or more for entire visible light range, is disclosed. |
| 5260253 |
Heat-sensitive recording material |
November 9, 1993 |
| A heat-sensitive recording material comprising a support having thereon a heat-sensitive color forming layer comprising an electron-donating colorless dye and an electron-accepting compound, wherein said electron-accepting compound is a bisthiourea compound. |
| 5202304 |
Recording medium |
April 13, 1993 |
| A recording medium which comprises a support having thereon a layer containing an electron-donating achromatic dye incorporated in microcapsules and an electron-accepting compound, wherein said electron-accepting compound is a 3-halo-4-hydroxybenzoic acid ester having a polymerizable |
| 5128309 |
Recording material |
July 7, 1992 |
| A recording material containing an electron donating colorless dye capable of undergoing a coloration reaction, wherein a metal salt of a salicylic acid derivative represented by the following formula (I) and a fatty acid derivative having a benzotriazole group as a substituent group or |
| 5091280 |
Light- and heat-sensitive recording material |
February 25, 1992 |
| A light- and heat-sensitive recording material comprising a support having thereon at least one light- and heat-sensitive layer comprising, (1) microcapsules containing an electron donative colorless dye, and (2) a light-hardenable composition containing (a) a polymerizable vinyl monomer |
| 5051333 |
Optical image-recording material |
September 24, 1991 |
| 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) microcapsul |
| 4999333 |
Heat sensitive recording material |
March 12, 1991 |
| 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 |
| 4994431 |
Heat-sensitive recording material |
February 19, 1991 |
| A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive color forming layer containing a colorless or slightly colored electron donating dye precursor and an electron accepting compound capable of forming color by the reaction with the electron |
| 4985391 |
Heat-sensitive recording material |
January 15, 1991 |
| A heat-sensitive recording material is disclosed. The material comprises a support having provided thereon a heat-sensitive color forming layer containing an electron donating dye precursor and an electron accepting compound, said heat-sensitive color forming layer containing at least on |
| 4981836 |
Recording material |
January 1, 1991 |
| A recording material is disclosed, which comprises a support having thereon a recording layer comprising at least one electron-donating colorless dye and at least one electron-accepting compound, wherein said electron-donating colorless dye is a fluorene derivative having a substitut |
| 4981835 |
Recording material |
January 1, 1991 |
| A recording material comprising an electron donating colorless dye and an electron accepting compound is disclosed, the recording material further comprising, as a heat-fusible substance, a benzyl ether derivative represented by formula (I): ##STR1## wherein R represents a haloge |
| 4923781 |
Photopolymerizable composition containing 3,6-diaminofluoran compounds |
May 8, 1990 |
| A photopolymerizable composition comprises a polyfunctional monomer, a photopolymerization initiator, an organic halogen compound and a 3,6-diaminofluoran derivative. The 3,6-diaminofluoran has the formula (I): ##STR1## wherein each of R.sup.1, R.sup.2, R.sup.3 and R.sup.4 is hydroge |
| 4920091 |
Recording material |
April 24, 1990 |
| 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 |
| 4918047 |
Heat-sensitive recording material |
April 17, 1990 |
| A heat-sensitive recording material comprising a support having thereon a recording layer containing an electron-donating colorless dye and an electron-accepting compound, wherein the electron-accepting compound is selected from salicylic acid derivatives having an acyl group, a subs |
| 4918045 |
Recording material |
April 17, 1990 |
| A recording material comprising a support, a microcapsule containing a substantially colorless electron-donating color former and a solvent, and an electron-accepting developer, wherein the color former is at least one selected from p-substituted aminophenylindolylphthalide derivatives, |
| 4914219 |
Process for preparing zinc salt of salicylic acid compound |
April 3, 1990 |
| A process for preparing a zinc salt of a salicylic acid compound which comprises reacting a salicylic acid compound and/or an alkali metal salt thereof with a zinc compound, wherein the reaction is carried out in a mixture of water and an organic solvent, and wherein the organic solvent |
| 4891297 |
Heat-sensitive diazo recording material with thiohydroquinone |
January 2, 1990 |
| A heat-sensitive recording material is disclosed. The material comprises a support having provided thereon a recording layer containing one or more diazo compound, a coupling component, and at least one thiohydroquinone derivative as a sensitizing agent. |
| 4888321 |
Heat-sensitive recording materials |
December 19, 1989 |
| A heat-sensitive recording material comprising a support having thereon a subbing layer mainly composed of a pigment and a binder, and a heat-sensitive coloring layer, wherein the subbing layer and the heat-sensitive recording layer each contains a heat-fusible material having a melt |
| 4882311 |
Heat-sensitive recording material |
November 21, 1989 |
| A heat-sensitive recording material is disclosed. The material comprises a support having provided thereon a heat-sensitive color forming layer containing an electron donating dye precursor and an electron accepting compound, said heat-sensitive color forming layer containing at least on |
| 4876233 |
Recording material |
October 24, 1989 |
| 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 |
| 4871713 |
Heat-sensitive recording material |
October 3, 1989 |
| 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## |
| 4870048 |
Color developer sheet |
September 26, 1989 |
| A color developer sheet which brings about color development by contact with a substantially colorless electron-donating color former, where said sheet contains an organometallic compound represented by the following general formula (I), (II) or (III) to enhance light resistance and |
| 4861748 |
Recording material |
August 29, 1989 |
| A recording material containing the combination of at least one electron-donating colorless dye containing a p-substituted aminophenylindolyl azaphthalide and at least one electron-accepting compound containing an organic acid having at least one phenolic hydroxyl group. The material |
| 4855282 |
Recording material and method for producing the same |
August 8, 1989 |
| A recording material is disclosed, which comprises a support having thereon a recording layer containing an at least one electron-donating colorless dye and at least one electron-accepting compound, wherein said electron-donating colorless dye is a copolymer of at least one polymeriz |
| 4855278 |
Heat-sensitive recording material |
August 8, 1989 |
| A heat-sensitive recording material is disclosed. The material comprises a neutral paper support having provided on at least one surface thereof a heat-sensitive color forming layer containing a fluoran derivative having an arylamino group at the 2-position and an amine residual group at |
| 4847236 |
Recording material |
July 11, 1989 |
| A recording material is described capable of color formation by the contact of a colorless electron donating dye with an electron accepting compound, wherein the recording material contains a compound represented by formula (I) or (II)wherein Ar.sub.1 and Ar.sub.2 each represents an arom |
| 4839332 |
Heat-sensitive recording material |
June 13, 1989 |
| A heat-sensitive recording material is disclosed. The material is comprised of a support having thereon a heat-sensitive color forming layer comprising at least one electron-donating colorless dye and at least one electron-accepting compound, wherein the electron-donating colorless dye |
| 4835133 |
Recording material |
May 30, 1989 |
| A recording material is described comprising an electron-donating colorless dye and a molybdic acid derivative as a color developer; the material has excellent color developability and shelf life stability, and enables the production of a developed color image with excellent fastness and |
| 4833118 |
Heat-sensitive recording material |
May 23, 1989 |
| A heat-sensitive recording material is disclosed, comprising a support having thereon a subbing layer made of a pigment and a binder as main components and a heat-sensitive color forming layer comprising a color former, a color developer and a heat-fusible substance, which is positio |
| 4812440 |
Recording material containing leuco dye |
March 14, 1989 |
| A recording material comprises a layer containing 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 an alkyl group, an aralkyl group or an aryl group; R.sup.3 is an |
| 4808566 |
Recording material |
February 28, 1989 |
| A recording material comprising an electron-donating colorless dye and an electron-accepting compound, wherein said colorless dye is a dimer of a 3-(4-substituted aminoaryl)-3-(substituted indol-3-yl)phthalide compound. The recording material provides an image exhibiting satisfactory fas |
| 4803192 |
Recording material |
February 7, 1989 |
| A recording material containing the combination of a colorless dye comprising a p-substituted aminophenylindolylphthalide moiety and an electron-accepting compound comprising an organic acid having at least one phenolic hydroxyl group. The dye image obtained by the recording material |
| 4800193 |
Recording material |
January 24, 1989 |
| A recording material comprising an electron-donating colorless dye and an electron accepting compound, wherein said electron-donating colorless dye is represented by the following general formula (I): ##STR1## wherein R and R' each represents an alkyl group; R.sub.1 represents an |
| 4792542 |
Recording material |
December 20, 1988 |
| A recording material is described comprising an electron donating colorless dye, an electron accepting compound, and at least one compound represented by formula (I), (II), or (III)wherein Ar.sub.1 and Ar.sub.2 each represents a substituted or unsubstituted aryl group or a substituted or |
| 4791095 |
Heat-sensitive recording material |
December 13, 1988 |
| A heat-sensitive recording material comprising a support having provided thereon a heat-sensitive color-forming layer which contains a colorless or slightly colored electron-donating dye precursor and an electron-accepting compound capable of reacting with the electron-donating dye precu |
| 4771034 |
Recording materials |
September 13, 1988 |
| A recording material containing an electron donating leuco dye and an electron accepting compound, wherein said electron accepting compound is a salicyclic acid derivative having an alkyl group, an alkoxy group or an aryloxy group as a substituent or a metal salt thereof. The recording |
| 4707464 |
Recording material |
November 17, 1987 |
| A recording material comprising: one or more supports, an electron donating leuco dye and one or more electron accepting compound(s) is disclosed, in which said electron accepting compound(s) is/are represented by formula (I): ##STR1## wherein R.sub.1 represents a hydrogen atom, |
