| Patent Number |
Title Of Patent |
Date Issued |
| 5055373 |
Multicolor recording material |
October 8, 1991 |
| 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 microcapsu |
| 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 |
| 5035974 |
Light-image forming material |
July 30, 1991 |
| A light-image forming material comprising a support having provided thereon a light-image forming layer comprising microcapsules containing an oxidative-developable leuco dye and a photo-oxidizing agent, and a reducing agent as essential ingredients, wherein the material also include |
| 4985331 |
Multi-color recording materials |
January 15, 1991 |
| Multi-color recording materials where the color forming layers are established on the same side of the support are disclosed. The multi-color recording system may be either of:(1) a two-color recording material comprising a support having provided thereon:(a) a light-sensitive heat-sensi |
| 4981769 |
Light image forming material |
January 1, 1991 |
| 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 |
| 4942107 |
Image-forming material and image recording method using the same |
July 17, 1990 |
| 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 develop |
| 4929530 |
Light image forming material and image-recording method using such |
May 29, 1990 |
| An optical image forming material comprising a support (A) at least one member selected from the group consisting of oxidative-developable leuco dyes, (B) at least one member selected from the group consisting of photo-oxidizing agents, (C) at least one reducing agent and (D) at least |
| 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, |
| 4888334 |
Pressure-sensitive microcapsule sheet |
December 19, 1989 |
| A pressure-sensitive microcapsule sheet comprising a support having thereon a pressure-sensitive layer comprising microcapsules and a binder comprising a copolymer latex composed of at least two monomers selected from the group consisting of an aliphatic conjugated diolefin monomer, an |
| 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 |
| 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 |
| 4849397 |
Pressure-sensitive recording medium |
July 18, 1989 |
| A pressure-sensitive recording medium producing a colored image utilizing the reaction between a substantially colorless electron donating dye precursor and an electron accepting developer is disclosed. This recording sheet is characterized in that the electron accepting developer layer |
| 4840927 |
Desensitizer composition |
June 20, 1989 |
| A desensitizer composition consisting essentially of a 2,2,6,6-tetramethylpyperidine compound as a desensitizer and additives comprising a natural or synthetic high-molecular weight compound and a pigment, a color developer sheet containing the desensitizer composition and a process |
| 4822768 |
Pressure sensitive recording sheet |
April 18, 1989 |
| A pressure-sensitive recording sheet which forms a colored image by the reaction of an electron donating color former with an electron accepting developer, comprising a support having provided thereon a micro-encapsulated electron donating color former and an electron accepting devel |
| 4820684 |
Pressure-sensitive recording sheet |
April 11, 1989 |
| A pressure-sensitive recording sheet is disclosed. The sheet produces a color image by reaction between a substantially colorless electron donating dye precursor and an electron accepting color developer, wherein a layer containing said electron accepting color developer contains (a) a |
| 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 |
| 4792543 |
Pressure-sensitive recording sheet |
December 20, 1988 |
| A pressure-sensitive recording sheet is disclosed. The sheet comprises a support having provided thereon a color-forming layer containing microcapsules prepared by encapsulating oil droplets having dissolved therein one or more substantially colorless color formers, wherein said micr |
| 4791094 |
Recording sheet |
December 13, 1988 |
| A recording sheet comprising microcapsules containing a substantially colorless electron donating dye, a diarylaminofluoran derivative, and a quinoline derivative represented by formula (I) ##STR1## wherein R.sub.1 represents a hydrogen atom, an alkoxy group having from 1 to 8 ca |
| 4778781 |
Pressure-sensitive recording paper containing microcapsules |
October 18, 1988 |
| Microcapsules, a process for preparing the same, and a pressure-sensitive recording paper containing the same are disclosed. The microcapsules are prepared by a process which comprises polymerizing melamine and formaldehyde, or polymerizing initial condensates of melamine and formald |
| 4769305 |
Pressure-sensitive recording material |
September 6, 1988 |
| A pressure-sensitive recording material is described, comprising an electron-donating color former and an electron-accepting color developer wherein said color developer comprises a mixture of (a) an aromatic carboxylic acid metal salt and (b) a hindered phenol as a combined electron |
| 4761397 |
Microcapsule sheet for pressure-sensitive copying |
August 2, 1988 |
| A microcapsule-coated sheet for pressure-sensitive copying is disclosed. The microcapsule sheet comprises a base paper having thereon a layer comprising microcapsules and synthetic polymer latex having an oil swelling degree of at least 50% as a binder, and is capable of preventing t |
| 4725315 |
Desensitizer composition for color developer sheet in pressure sensitive recording system contai |
February 16, 1988 |
| A desensitizer composition is described, comprising a desensitizer, a 2,2,6,6-tetramethylpiperidine derivative, and additives. |
| 4689644 |
Pressure-sensitive recording sheets |
August 25, 1987 |
| A pressure-sensitive recording sheet capable of providing colored images by a reaction of a substantially colorless electron donating dye precursor and an electron accepting developer is described, wherein a layer comprising the electron accepting developer of the pressure-sensitive |
| 4601920 |
Process for the preparation of color developer sheets for pressure-sensitive recording |
July 22, 1986 |
| A process for preparing a color developer sheet for pressure-sensitive recording is disclosed. The sheet is comprised of a coating solution on a support, said coating solution being prepared by dissolving an aromatic carboxylic acid metal salt in an organic solvent and then emulsifying t |
| 4559242 |
Method of preparing color developer sheets |
December 17, 1985 |
| A method of preparing a color developer sheet for pressure-sensitive recording is described. The method comprises preparing Coating Solutions A and B separately. Coating Solution A is prepared by dissolving an aromatic carboxylic acid metal salt in an organic solvent and emulsifying the |
