WO2006064778A1 - 感熱記録体 - Google Patents
感熱記録体 Download PDFInfo
- Publication number
- WO2006064778A1 WO2006064778A1 PCT/JP2005/022815 JP2005022815W WO2006064778A1 WO 2006064778 A1 WO2006064778 A1 WO 2006064778A1 JP 2005022815 W JP2005022815 W JP 2005022815W WO 2006064778 A1 WO2006064778 A1 WO 2006064778A1
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- WIPO (PCT)
- Prior art keywords
- heat
- recording material
- parts
- sensitive recording
- colorant
- Prior art date
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/323—Organic colour formers, e.g. leuco dyes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/30—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used using chemical colour formers
- B41M5/333—Colour developing components therefor, e.g. acidic compounds
- B41M5/3333—Non-macromolecular compounds
- B41M5/3335—Compounds containing phenolic or carboxylic acid groups or metal salts thereof
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/41—Base layers supports or substrates
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
- B41M5/26—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used
- B41M5/40—Thermography ; Marking by high energetic means, e.g. laser otherwise than by burning, and characterised by the material used characterised by the base backcoat, intermediate, or covering layers, e.g. for thermal transfer dye-donor or dye-receiver sheets; Heat, radiation filtering or absorbing means or layers; combined with other image registration layers or compositions; Special originals for reproduction by thermography
- B41M5/42—Intermediate, backcoat, or covering layers
Definitions
- the present invention relates to a heat-sensitive recording material that utilizes a color development reaction between a leuco dye and a colorant.
- a heat-sensitive recording material that utilizes a color development reaction between a leuco dye and a colorant.
- the present invention relates to a thermal recording medium in which the change in recording sensitivity due to a change in humidity of the environment in which the thermal recording medium is used (hereinafter also referred to as “environmental humidity change”) is small.
- a heat-sensitive recording material using a color reaction by heat between a leuco dye and a colorant is well known.
- Powerful thermal recording media are relatively inexpensive, the recording equipment is compact, and its maintenance is relatively easy. Therefore, it is used not only as a recording medium for facsimiles and various computers, but also as a recording medium used for printers of medical diagnostic equipment such as MRI image diagnosis and X-ray image diagnosis, and as a plotter for CAD. It has been done.
- the recording sensitivity fluctuates when the moisture in the heat-sensitive recording layer changes due to the change in humidity of the environment in which the recording material is used.
- the recording density fluctuates, and it is difficult to obtain a constant recording density particularly in the halftone area. This drawback is particularly noticeable when a support such as a synthetic resin film is used.
- thermosensitive recording media used for medical diagnosis can obtain images similar to those of the silver salt method, can be recorded in multiple gradations, and the recording density in the halftone area is constant regardless of the humidity change in the environment. It is strongly demanded that For this reason, there is a strong demand for a thermal recording material in which the above-mentioned drawbacks are improved.
- Patent Document 1 As a colorant used in a heat-sensitive recording material, 4, A'-cyclohexylidene diphenol has been known for a long time (see Patent Document 1).
- Patent Document 2 a method (Patent Document 2) has been proposed that uses such a colorant to obtain a heat-sensitive recording material having a large transmission density difference between a recorded portion with little background capri and an unrecorded portion.
- Patent Document 3 4,4′-bis (Np-tolylsulfonylaminocarbonylamino) diphenylmethane is also known as a colorant.
- Patent Document 3 for obtaining a thermosensitive recording material having improved plasticizer properties and improved long-term stability of the recorded image.
- thermosensitive recording medium in order to improve the storage stability of the recording part of the thermosensitive recording medium, a method using composite particles obtained by microencapsulating a leuco dye and a hydrophobic organic solvent with a wall film material made of a hydrophobic resin (patent) References 4 and 5), a method using composite particles obtained by polymerizing an acrylic hydrophobic resin on the surface of a leuco dye (see Patent Document 6), and a composite obtained by containing a leuco dye in a hydrophobic resin A method using particles (see Patent Documents 7 and 8) has been proposed.
- Patent Document 1 Japanese Examined Patent Publication No. 45-14039 (Page 4)
- Patent Document 2 Japanese Patent Laid-Open No. 9-76641 (Claim 1)
- Patent Document 3 Japanese Patent Laid-Open No. 5-147357 (Example 1)
- Patent Document 4 Japanese Patent Application Laid-Open No. 60-244594 (Claim 1)
- Patent Document 5 Japanese Patent Laid-Open No. 61-86283 (Example 1)
- Patent Document 6 Japanese Unexamined Patent Publication No. 2000-158822 (Claims 1 and 7)
- Patent Document 7 JP-A-9 263057 (Claim 1)
- Patent Document 8 Japanese Patent Laid-Open No. 2003-266951 (Claim 1)
- An object of the present invention is to provide a heat-sensitive recording material that is less susceptible to fluctuations in recording sensitivity due to environmental humidity changes of the heat-sensitive recording material, and that has excellent image quality and heat-resistant background capability.
- the present invention is a thermal recording body comprising a support and a thermal recording layer,
- thermosensitive recording layer contains a leuco dye and a colorant
- the leuco dye is in the form of composite particles containing the leuco dye and a hydrophobic resin, and the colorant comprises at least 4, —cyclohexylidene diphenol and 4, 4′-bis (N_p_tolylsulfonyla). Including minocarbonylamino) diphenylmethane It is characterized by.
- the present invention includes the following thermal recording material.
- Item 1 A thermal recording medium comprising a support and a thermal recording layer
- thermosensitive recording layer contains a leuco dye and a colorant
- the leuco dye is in the form of a composite particle containing the leuco dye and a hydrophobic resin, and the colorant comprises 4, 1-cyclohexylidene diphenol and 4, 1-bis (N_p_tolylsulfonylaminoaminocarbonyl).
- Item 2 The colorant comprises 4, monocyclohexylidene diphenol and 4, 4′-bis (
- Item 2 The heat-sensitive recording material according to Item 1, which is obtained by wet-grinding a composition containing (N_p-tolylsulfonylaminoaminocarbonylamino) diphenylmethane.
- Item 3 4, 4′-bis (N_p-tolylsulfonylaminoaminocarbonylamino) diphenylmethane is contained in an amount of 15 to 75% by mass relative to 4, A′-cyclohexylidenediphenol.
- Item 4 The heat-sensitive material according to Item 1, wherein the colorant strength S and 4-hydroxy-4′-aryloxydiphenyl sulfone are further contained. Recorded body.
- Item 5 The colorant comprises 4,4'-cyclohexylidenediphenol, 4, bis (N-p-tolylsulfonylaminocarbonylamido) diphenylmethane, and 4-hydroxy 4'-aryloxydiph Item 5.
- the heat-sensitive recording material according to Item 4 which is obtained by wet-grinding a composition containing ⁇ nylsulfone.
- Item 6 The heat-sensitive recording material according to Item 4 or 5, which is contained in an amount of 10 to 50% by mass relative to 4,4-hydroxy-hydroxydiphenyl sulfone force 4,4-cyclohexylidene diphenol.
- Item 7 The thermosensitive recording material according to Item 1, wherein the colorant power further includes N_ (p-tolylsulfonyl) -N'-phenylurea.
- Item 8 4, 4 '— cyclohexylidene diphenol, N _ (p-tolylsulfonyl)
- Thermal recording material according to item 7 wherein the phenylurea is 25 to 150% by mass.
- Item 9 The heat-sensitive recording material according to Item 1, wherein the hydrophobic resin forming the composite particles is urea resin or urea urethane resin.
- Item 10 The heat-sensitive recording material according to any one of Items 1 to 9, wherein the support is a transparent film.
- Item 11 The heat-sensitive recording material according to any one of Items:! To 10, wherein the heat-sensitive recording material further comprises a protective layer.
- Item 12 The colorant is 4, monocyclohexylidene diphenol, 4, 4'-bis (N_p-tolylsulfonylaminocarbonylamino) diphenylmethane, 4-hydroxy-1 4'-aryl Item 1.
- the heat-sensitive recording material according to any one of Items 1 to 1, which contains oxydiphenyl sulfone and N_ (p-tolylsulfonyl) -phenyl urea.
- the heat-sensitive recording material of the present invention contains a color former and a leuco dye in the heat-sensitive recording layer.
- the colorant of the present invention contains at least 4,4′-cyclohexylidenediphenol and 4, -bis (Np-tolylsulfonylaminocarbonylamino) diphenylmethane.
- the recording sensitivity particularly the recording sensitivity in the halftone region, is likely to fluctuate due to changes in the humidity of the environment in which the thermosensitive recording medium is used.
- color former those obtained by dispersing them can be used.
- reaction force obtained by mixing and dispersing (co-dispersing) 4,4'-cyclohexylidenediphenol and 4,1-bis (N-p-tolylsulfonylcarbonylcarbonylamino) diphenylmethane.
- a colorant in other words, a composition obtained by preparing a composition containing 4, -cyclohexylidenediphenol and 4, bis (N-p-tolylsulfonylaminoaminoamido) diphenylmethane and wet-grinding the composition.
- a colorant is preferred because the image quality of the obtained heat-sensitive recording material becomes better.
- the particle diameter of these colorant dispersions is not particularly limited, but the volume average particle diameter is 0.1 to 1. O xm, preferably f is 0.2 to 0.5 xm force S. I want it.
- the amount of hydrogen used is preferably 15 to 75% by mass, more preferably 20 to 65% by mass, based on 4,4′-cyclohexylidenediphenol. By setting it in such a range, crystallization of 4,4′-cyclohexylidene diphenol in the thermal recording layer coating liquid is suppressed, and the image quality of the thermal recording medium becomes better.
- the colorant is composed of a compound other than 4,4'-cyclohexylidenediphenol and 4, -bis (N-p-tolylsulfonylaminocarbonylamino) diphenylmethane. Depending on the purpose, it may be further included within the range not inhibiting the desired effect of the present invention.
- Other compounds include, for example, 4, 4, monoisopropylidenediphenol, 2, 2 bis (4-hydroxyphenyl) -4-methylpentane, benzyl 4-hydroxybenzoate, 4, 'dihydroxydiphenyl sulfone, 2, Dihydroxydiphenyl sulfone, 4-hydroxy isopropoxydiphenyl sulfone, 4-hydroxy 4 'aryloxy diphenyl sulfone, bis (3-alkylenoyl 4-hydroxyphenylenosulfone), 4,' -bis [(4-methyl 3-phenoxycarbonylaminomino) ureido] diphenylsulfone, 4-hydroxymonomethyldiphenylsulfone, 3,4-dihydroxyphenyl _4'-methylphenylsulfone, bis (4-hydroxyphenylthiol) Ethoxy) methane, bis (p-hydroxyphenol) butyl acetate, etc.
- Enol compound N— (p-toluenesulfo 2-nole) power rubamoyl acid—p _tamylphenyl ester, N— (p-tolylsulfonyl) —N′—phenylurea, N _ (o _tolyl) _p-tolylsulfoamide _ S ⁇ N in the molecule
- the use ratio is preferably about 10 to 50% by mass with respect to 4, '-cyclohexylidenediphenol.
- the particle diameter of these colorant dispersions is not particularly limited, but the volume average particle diameter 0.1 to 1. ⁇ ⁇ , preferably ⁇ , 0.2 to 0.5 / 1 111 desired.
- the color former further contains ⁇ - ( ⁇ trilylsulfonyl) N'-phenylurea.
- fine image gradation means that the change in the recording density with respect to the printing processing energy is smaller.
- the halftone area is a halftone recording density area.
- the recording density in measurement with a Macbeth densitometer (trade name: TR-927J, manufactured by Macbeth Co.) is 1.0 to 1. The area that becomes 5.
- ⁇ _ _Tolylsulfonyl) _ ⁇ When phenylurea is used in combination, the ratio of 4, 4 '— hexylidenediphenol and ⁇ — ( ⁇ -tolylsulfonyl) one N' —phenylurea is 80: 20-40: 60 is preferred 75: 25-55: 45 is preferred.
- 4, ⁇ '- to xylylene Denji phenol cyclohexane, ⁇ - ( ⁇ Turin less Honoré Honi Honoré) N' - Fueniruurea is preferably about 25 to 150 weight 0/0 device 33 to 82 weight 0/0 Is more preferred.
- the use ratio of the colorant in the heat-sensitive recording layer is not particularly limited, but the colorant is preferably about 10 to 60% by mass, and particularly preferably about 20 to 50% by mass with respect to the total solid content of the heat-sensitive recording layer. .
- the use ratio of the colorant is 10% by mass or more, there is little possibility that the recording sensitivity is lowered. On the other hand, if it is 60% by mass or less, there is little possibility that the maximum recording density will decrease due to a decrease in the ratio of leuco dye.
- the leuco dye is used in the form of composite particles containing the leuco dye and a hydrophobic resin.
- the type of hydrophobic resin forming the composite particles is not particularly limited, and examples thereof include urea resins, urethane resins, urea-urethane resins, styrene resins, acrylic resins, and the like. Of these, urea resins and urea-urethane resins are preferred because they are excellent in heat resistance, in particular, heat resistant background capriability.
- the form of the composite particles containing a leuco dye and a hydrophobic resin includes, for example,
- microencapsulated particles in which the leuco dye and the hydrophobic organic solvent (1) are encapsulated by a film made of a hydrophobic resin emulsify the leuco dye and the organic solvent, and then surround the oil droplets.
- a film made of a hydrophobic resin emulsify the leuco dye and the organic solvent, and then surround the oil droplets.
- a polyvalent isocyanate compound and a second substance that reacts therewith to form a capsule wall for example, a polyol compound and a polyamine compound
- the composite particles in the form obtained by polymerizing the hydrophobic resin on the surface of the leuco dye particles (2) can be produced, for example, as follows. A compound having an unsaturated carbon bond is added to a dispersion of particles composed of a leuco dye, and after adding a polymerization initiator, the compound having an unsaturated carbon bond is subjected to addition polymerization by heating as necessary, and the leuco dye. It can be obtained by coating the surface of the dye particles.
- the form of the composite particles in which the leuco dye (3) is dispersed in the hydrophobic resin includes a form in which one or more leuco dyes are dispersed in the solid hydrophobic resin particles.
- the resin is a urea resin or a urethane-urea resin
- the composite particles can be manufactured as follows.
- a solution is prepared by dissolving a leuco dye and a compound that forms polyurea or polyurea polyurethane by reacting with water.
- This solution is emulsified and dispersed in an aqueous medium in which a protective colloid material such as polybulu alcohol is dissolved and added, if necessary.
- a reactive substance such as a water-soluble polyamine is added to the emulsified dispersion.
- This emulsified dispersion is heated to polymerize the polymerization components, and leuco Composite particles composed of a dye and urea resin or urea urethane resin are obtained.
- the compound which forms polyurea or polyurea polyurethane by reacting with water is a polyvalent isocyanate compound which may be only a polyvalent isocyanate compound, and a polyol and polyamine which react therewith. It can be a mixture of. Further, it may be an adduct of a polyvalent isocyanate compound and a polyol, or a multimer of a polyvalent isocyanate compound, such as a biuret body or an isocyanurate body.
- leuco dyes include, for example, 3_ [2,2_bis (1-ethyl-2_methylindo-noryl-3-yl) bul] -1- (4-jetylaminophenyl) phthalide, 3, 3-bis (p-dimethylaminophenyl) _6-dimethylaminophthalide, 3- (4-jetylamino_2-methylphenyl) _3_ (4-dimethylaminophenyl) _6-dimethylaminophthalide, 3-Cyclohexylamino 6-Black fluoran, 3-Dethylamino 6-Methylolone 7-Black fluoran, 3-Dethylamino 6,8-Dimethylfluorane, 3-Jetylamino 6,7-Dimethylfluorane , 3-jetylamino-7-black fluoran, 3-(N ethyl N isoamyl) amino-6-methyl 7-anilinofluorane, 3-d
- polyvalent isocyanate compound examples include p-phenylene diisocyanate, 2,6 tolylene diisocyanate, 2,4 tolylene diisocyanate, naphthalene 1,4-diisocyanate, and dicyclohexylmethane.
- polyol compound examples include ethylene glycol, 1,3 propanediol, 1,4 butanediol, 1,7-heptanediol, 1,8-octanediol, propylene glycol, 1,3 dihydroxybutane, 2, 2 Dimethyl-1,3-propanediol, 2,5-hexanediol, 3-methyl-1,5-pentanediol, 1,4-cyclohexanedimethanol, dihydroxycyclohexane, diethylene glycol, phenylethylene glycol, pentaerythritol, 1, 4-di (2-hydroxyethoxy) benzene, 1,3-di (2-hydroxyethoxy) benzene, p-xylylene glycol, m-xylylene glycol, 4,4 'isopropylidenediphenol, 4, 4, -dihydroxy Diphenyl sulfone and the like are included. These may be used alone
- Polyamine compounds include, for example, ethylenediamine, trimethylenediamine, tetramethylenediamine, pentamethylenediamine, hexamethylenediamine, p_phenylenediamine, m-phenylenediamine, 2, 5— Examples include dimethylpiperazine, triethylenetriamine, triethylenetetramine, and jetylaminopropylamine. These may be used alone or in combination of two or more.
- the content ratio of the leuco dye in the composite particles is about 10 to 70% by mass, preferably about 35 to 60% by mass, based on the total solid content of the composite particles.
- the volume average particle diameter of the composite particles is preferably about 0.5 to 3 ⁇ ⁇ ⁇ , and more preferably about 0.5 to about 1. ⁇ .
- the composite particles may contain a sensitizer for enhancing recording sensitivity, an ultraviolet absorber for enhancing light resistance, and a stabilizer.
- the sensitizer includes, for example, an aromatic organic compound having a melting point of about 40 to about 150 ° C.
- Examples of the stabilizer include hindered phenols and hindered amines.
- Ultraviolet absorbers include, for example, benzotriazole compounds and benzophenone compounds.
- the content ratio of the composite particles in the heat-sensitive recording layer is 10 to 6 based on the total solid content of the heat-sensitive recording layer.
- the ratio of the composite particles to the colorant in the heat-sensitive recording layer is about 50 to 300 parts by mass, preferably about 100 to 200 parts by mass with respect to 100 parts by mass of the composite particles.
- the leuco dye is in the form of composite particles containing a leuco dye and a hydrophobic resin, the background capri due to heat and humidity is reduced, and the color image is less decolored.
- the leuco dye strength S isocyanate compound or an organic solvent is superior in transparency of the heat-sensitive recording layer as compared with the case where the leuco dye is used in a solid fine particle state.
- the heat-sensitive recording layer is generally a water-based medium, and is prepared by mixing and stirring composite particles, a specific colorant, an adhesive, and an auxiliary agent added as necessary. Can be applied on the support so that the coating amount after drying is about 3 to 25 gZm 2 and dried.
- Examples of the adhesive to be blended in the heat-sensitive recording layer coating liquid include, for example, partially hatched or completely cured polybulu alcohol, carboxy-modified polybulu alcohol, acetocetyl-modified polybutyl alcohol, diaceton-modified polybulu alcohol, silicon.
- Modified polybutanol alcohols such as polybutanol, starch and derivatives thereof, hydroxymethyl cellulose, hydroxyethinoresenorelose, hydroxypropinoresenorelose, methinoresenorelose, Cellulose derivatives such as ethyl cellulose, polyvinyl pyrrolidone, acrylamide-acrylic acid ester copolymer, acrylamide-acrylic acid ester, methacrylic acid ester copolymer, styrene maleic anhydride copolymer, isobutylene maleic anhydride copolymer, Examples thereof include water-soluble adhesives such as casein and gelatin, as well as butyl acetate latex, urethane latex, acrylic latex, and styrene-butadiene latex.
- the content of the adhesive is 10 to 50% by mass, particularly 15% with respect to the total solid content in the heat-sensitive recording layer.
- auxiliary agent examples include surfactants, waxes, lubricants, pigments, water resistance agents, antifoaming agents, fluorescent dyes, and coloring dyes.
- surfactant examples include sodium dioctylsulfosuccinate, sodium dodecinolebenzene sulfonate, sodium lauryl alcohol sulfate and the like.
- Waxes include polyethylene wax, carnauba wax, paraffin wax, ester wax and the like.
- the lubricant includes higher fatty acid metal salts such as zinc stearate and calcium stearate.
- Examples of the pigment include kaolin, clay, talc, calcium carbonate, calcined kaolin, titanium oxide, amorphous silica, and aluminum hydroxide.
- waterproofing agents include darioxal, formalin, glycine, glycidyl ester, glycidyl ether, dimethylol urea, ketene dimer, dialdehyde starch, melamine resin, polyamide resin, polyamide-epoxyhydrin resin, ketone —Aldehyde resin, borax, boric acid, zirconium carbonate ammonium, epoxy compounds, etc. are included.
- the heat-sensitive recording layer may contain a preservability improving agent as long as the desired effect of the present invention is not impaired.
- Examples of the storage stability improver include 1, 1, 3-tris (2-methyl_4-hydroxy-5-cyclohexylphenyleno) butane, 1, 1,3-tris (2-methyl_4-hydroxy_5 _tert-Butylphenolino) butane, 1, 1 _bis (4-hydroxyphenyl) _ 1 _phenylenyl, 2, 2'-ethylidenebis (4,6-ditert-butylphenol), 1,4_bis [Hiichi Methyl - ⁇ ⁇ (4 '—Hydroxyphenyl) ethinole] benzene, 1,3-bis [ ⁇ -methinole a-
- the use ratio thereof is about 10 to 40% by mass, preferably about 15 to 30% by mass with respect to the total colorants.
- a sensitizer that can be contained in the composite particles as necessary, an ultraviolet absorber for enhancing light resistance, and a hindered phenol, hindered amine, etc. as a stabilizer. It can also be contained.
- the heat-sensitive recording layer may have a multi-layer coloring layer structure in which a plurality of leuco dyes are arranged in different layers, or a single-layer coloring layer structure in which a plurality of leuco dyes are contained in the same layer. It ’s good.
- the single layer color forming layer contains a plurality of leuco dyes in the same layer in terms of haze.
- the method for forming the heat-sensitive recording layer is not particularly limited, and can be formed by a known appropriate coating method.
- Known coating methods include, for example, air knife coating, varivar blade coating, pure blade coating, rod blade coating, short duenore coating, curtain coating, die coating, and gravure coating.
- the support used in the heat-sensitive recording material of the present invention is not particularly limited, for example, high-quality paper, lamine
- Film-treated paper synthetic paper, polyethylene terephthalate, polypropylene, polyethylene and other film base materials can be used.
- the film substrate may be transparent or a colored transparent film.
- the support has a thickness of about 20 to 200 ⁇ m, preferably about 75 to 200 ⁇ m.
- the support is a transparent film because the effect of the present invention that the effect of suppressing fluctuations in recording sensitivity due to changes in environmental humidity and excellent image quality can be obtained are exhibited.
- an anchor coat layer can be provided or a corona discharge treatment can be performed in order to improve the adhesion to the heat-sensitive recording layer. Furthermore, it can be subjected to a conductive treatment with a conductive agent.
- the heat-sensitive recording material of the present invention can be produced by applying a heat-sensitive recording layer coating solution on at least one surface of a support and drying to form a heat-sensitive recording layer.
- an undercoat layer can be provided between the support and the thermosensitive recording layer.
- the undercoat layer is formed by applying and drying an undercoat layer coating solution containing a pigment and an adhesive on a support.
- a pigment and an adhesive Various types can be used, but usually, inorganic pigments such as calcined clay and organic pigments such as hollow plastic pigments can be exemplified.
- the adhesive an adhesive used for the heat-sensitive recording layer can be used.
- the coating amount in weight after drying:! ⁇ 30g / m 2 approximately, and preferably from 5 to 20 g / m 2 approximately.
- a protective layer may be provided on the heat-sensitive recording layer.
- the protective layer is generally formed by applying and drying a protective layer coating solution obtained by mixing and stirring an adhesive, and optionally added pigments and various auxiliary agents on a heat-sensitive recording layer, using water as a medium. By doing so, you can gain power S.
- Examples of the adhesive include those similar to the adhesive used for the heat-sensitive recording layer.
- polyhydric alcohols such as partially or fully cured polyvinyl alcohol, carboxy-modified polyvinyl alcohol, acetoacetyl-modified polybutyl alcohol, diacetone-modified polyvinyl alcohol, silicon-modified polybutyl alcohol, starch and derivatives thereof, hydroxymethylol Cenorelose derivatives such as senorelose, hydroxyethinoresenorelose, hydroxypropinoresenorelose, methinoresenorelose, ethinoresenorelose, polybulurpyrrolidone, acrylamide-acrylate copolymer, acrylamide-acrylate ester -Water-soluble contact such as methacrylic acid ester copolymer, styrene-maleic anhydride copolymer, isobutylene-maleic anhydride copolymer, casein, gelatin, etc.
- Adhesives vinyl
- the amount of the adhesive is not particularly limited, but is preferably 30 to 9 with respect to the total solid amount of the protective layer.
- Examples of the pigment include kaolin, clay, talc, calcium carbonate, calcined kaolin, titanium oxide, amorphous silica, aluminum hydroxide and the like, and the particle diameter is 1 ⁇ m in volume average particle diameter. m or less is preferred.
- the content is not particularly limited, but is preferably about 10 to 60% by mass, more preferably about 15 to 50% by mass, based on the total solid content of the protective layer.
- auxiliary agent examples include surfactants, waxes, lubricants, waterproofing agents, antifoaming agents, fluorescent dyes, and coloring dyes.
- surfactant examples include sodium dioctylsulfosuccinate, sodium dodecinolebenzene sulfonate, sodium lauryl alcohol sulfate, sodium salt, perfluoroalkylethylene oxide adduct and the like.
- Waxes include, for example, polyethylene wax, paraffin wax such as carnauba wax, and ester wax such as stearyl phosphate potassium salt.
- Lubricants include higher fatty acid amides such as stearamide and ethylene bis stearamide, higher fatty acid metal salts such as zinc stearate and calcium stearate.
- Water resistance agents include glyoxal, formalin, glycine, glycidyl ester, glycidyl ether, dimethylol urea, ketene dimer, dialdehyde starch, melamine resin, polyamide resin, polyamide-epoxyhydrin resin, ketone monoaldehyde. Resins, adipic acid dihydrazide, borax, boric acid, zirconium carbonate ammonium, epoxy compounds and the like are included.
- the amount used can be appropriately set from a wide range.
- the method for applying the protective layer coating liquid is not particularly limited, and any known means can be used as appropriate.
- any known means can be used as appropriate.
- air knife coating, NORY blade coating, pure blade coating, rod blade coating, short dough coating, car Ten coating, die coating, gravure coating and the like can be used.
- the coating amount of the protective coating solution is about 0.5 to 10 g / m 2 , preferably about 2 to 5 g / m 2 in terms of dry weight.
- the thermal recording material of the present invention can be subjected to a smoothing process using a super calendar after various layers are formed or after all layers are formed.
- thermal recording media of the present invention can be added to the thermal recording media of the present invention as needed.
- the heat-sensitive recording material of the present invention thus obtained has little change in recording sensitivity due to changes in environmental humidity, and is excellent in heat-resistant background capriability and image quality.
- the heat-sensitive recording material of the present invention comprises a support and a heat-sensitive recording layer, the heat-sensitive recording layer contains a leuco dye and a colorant, and the leuco dye contains the leuco dye and a hydrophobic resin.
- the colorant contains 4,4′-cyclohexylidenediphenol and 4, ⁇ ′-bis ( ⁇ - ⁇ -tolylsulfonylaminocarbonylamino) diphenylmethane, thereby It has the characteristics that it has little change in recording sensitivity due to changes in humidity, and is excellent in image quality and heat-resistant texture.
- the colorant is obtained by wet-grinding a composition containing 4, 1-cyclohexylidenediphenol and 4, 1-bis ( ⁇ _ ⁇ -tolylsulfonylaminocarbonylamino) diphenylmethane.
- the image quality is better.
- the colorant further contains 4-hydroxymonoaryldiphenylsulfone, there is a feature that the whitening phenomenon of the heat-sensitive recording material is prevented.
- the colorant power further includes ⁇ - ( ⁇ -tolylsulfonyl) 1 N'-phenylurea, it has a feature that fine image gradation is exhibited particularly in a halftone region.
- thermosensitive recording material of the present invention having such characteristics can be suitably used as a transparent thermosensitive recording material for medical use, particularly for image diagnosis.
- FIG. 1 is a drawing illustrating the relationship between applied energy and recording density in the thermal recording materials obtained in Example 5 and Example 7.
- volume average particle diameter is a value measured using a laser light diffraction type particle size distribution analyzer SALD2000 (manufactured by Shimadzu Corporation).
- a leuco dye and an ultraviolet absorber were dissolved by heating in a solvent composed of a polyvalent isocyanate H compound at 150 ° C. to prepare a solution.
- the leuco dyes are: 3 jetylamino-6-methyl-7- (3 toluidino) fluorane 11 parts, 3-jetylamino-6,8-dimethylfluorane 6 parts, and 3,3-bis (4 jetinoreamino-2 ethoxyphenol) -4-Azaphthalide 5 parts.
- the ultraviolet absorber 10 parts of 2hydroxy-4-octyloxybenzophenone was used.
- the polyisocyanate compound consists of 2 parts of dicyclohexylmethane 4,4, -diisocyanate (manufactured by Sumitomo Bayer Urethane Co., Ltd., Desmoduignole W), and m-tetramethylxylylene diisocyanate (manufactured by Mitsui Takeda Chemical Co., Ltd., TMXDI) 12 parts were used.
- This solution was polybulal alcohol (Kuraray, Poval? ⁇ 8_217 ££), 8.5 parts, and acetylene glycol as a surfactant with ethylene oxide (Nisshin Chemical Co., Ltd.) E1010) 1.
- the mixture was gradually added to 100 parts of an aqueous solution containing 5 parts, and emulsified and dispersed by stirring with a homogenizer at a rotation speed of lOOOOrpm.
- the obtained emulsified dispersion was heated to 75 ° C and subjected to a polymerization reaction for 7 hours to obtain a leuco dye-containing composite particle dispersion having a volume average particle size of 0.8 / m.
- the resulting liquid was diluted with water to prepare a dispersion containing 25% leuco dye-containing composite particles.
- the composition was mixed and stirred to obtain a thermal recording layer coating solution.
- Ionomer-type urethane resin latex [Dainippon Ink & Chemicals, NO, Idlan (registered trademark) AP-30F, solid concentration 20%] 100 parts, acetocetyl-modified polyvinyl alcohol [Nippon Gosei Chemicals, GOHSefimer (R) Z- 410, polymerization degree: about 2 300, ⁇ index: 8% aqueous solution of 500 parts of about 98 mole 0/0], a 25% aqueous solution 5 parts of polyamidoamine 'E Pi chlorohydrin, kaolin ( Engelhard Corporation, UW-90) volume average particle size 0.8 / im 60% slurry 50 parts, stearamide (manufactured by Chukyo Yushi Co., Ltd., high micron L-271, solid concentration 25%) 26 parts, Stearyl phosphate ester potassium salt (Matsumoto Yushi Seiyaku Co., Ltd., Wuponole 1800, solid concentration 35%) 4 parts, Perfluor
- the coating amount after drying using a slot die coater is 20 g / m 2
- a heat-sensitive recording layer was provided by coating and drying.
- the coating amount for the protective layer was 3.5 gZm 2 after drying.
- a protective layer was provided by coating and drying to obtain a heat-sensitive recording material.
- thermosensitive recording medium In the preparation of the heat-sensitive recording layer coating liquid of Example 1, the thermosensitive recording medium was prepared in the same manner as in Example 1 except that 50 parts of B liquid and 50 parts of the following D liquid were used instead of 100 parts of B liquid. Obtained.
- a composition comprising 42 parts of N- (p-tolylsulfonyl) -phenylurea, 60 parts of a 10% aqueous solution of sulfone-modified polybulal alcohol, and 18 parts of water was obtained using an ultrapiscomill with a volume average particle size of 0.30 xm.
- a colorant dispersion was obtained by pulverizing.
- a composition comprising 42 parts of 4-hydroxy 4'-allyloxydiphenyl sulfone, 60 parts of a 10% aqueous solution of sulfone-modified polyvinyl alcohol, and 18 parts of water has a volume average particle size of 0 using ultraviscomil.
- a colorant dispersion was obtained by grinding to 30 ⁇ m.
- thermosensitive recording layer coating liquid of Example 1 a thermosensitive recording medium was obtained in the same manner as in Example 1 except that 120 parts of the following F liquid was used instead of 100 parts of B liquid and 20 parts of C liquid. It was.
- Example 1 In the preparation of the thermal recording layer coating liquid of Example 1, except that B part 100 parts and C part 20 parts were used, except that B part 66 parts, C part 29.5 parts and E part 24.5 parts were used. In the same manner as in Example 1, a heat-sensitive recording material was obtained.
- thermosensitive recording layer coating liquid of Example 1 a thermosensitive recording material was obtained in the same manner as in Example 1, except that 120 parts of the following H liquid was used instead of 100 parts of B liquid and 20 parts of C liquid. It was.
- a composition comprising 60 parts of a 10% aqueous solution of bulalcohol and 18 parts of water was pulverized using Ultraviscomil until the volume average particle size became 0.28 ⁇ m to obtain a colorant mixed dispersion. .
- a heat-sensitive recording material was obtained in the same manner as in Example 1 except that 20 parts of the liquid C was not used in the preparation of the heat-sensitive recording layer coating liquid of Example 1.
- Example 1 In the preparation of the heat-sensitive recording layer coating liquid of Example 1, instead of 100 parts of B liquid, the following I liquid 1 A heat-sensitive recording material was obtained in the same manner as in Example 1 except that 00 parts was used and 20 parts of C liquid was not used.
- a ′ 42 parts of dihydroxydiphenylsulfone, 10 of sulfone-modified polybulal alcohol.
- thermosensitive recording layer coating liquid of Example 1 100 parts of the following J liquid was used instead of 100 parts of B liquid, and 20 parts of C liquid was not used. A thermal recording material was obtained.
- a composition comprising 42 parts of 4-hydroxymonoisopropoxydiphenylsulfone, 60 parts of a 10% aqueous solution of sulfone-modified polyvinyl alcohol, and 18 parts of water was used to make a volume average particle size of 0.30 using Ultraviscomil.
- a colorant dispersion was obtained by pulverizing to ⁇ m.
- a composition consisting of 42 parts of 4, '-dihydroxydiphenylsulfone, 60 parts of a 10% aqueous solution of sulfone-modified polyvinyl alcohol, and 18 parts of water has a volume average particle size of 0.30 am using Ultra Piscomill. To obtain a colorant dispersion.
- heat sensitivity was the same as Example 1 except that 35 parts of the following L liquid and 55 parts of water were used instead of 100 parts of Liquid A and 30 parts of water. A record was obtained.
- thermosensitive recording material obtained by force.
- the thermal recording materials obtained in the examples and comparative examples were left in an environment of 23 ° CX 50% RH for 24 hours, and then recorded in gradation mode using a thermal printing printer UP-DF500 (manufactured by Sony Corporation). . Subsequently, the density of the recording part was measured in a visual mode of a Macbeth densitometer (trade name: TR-927J, manufactured by Macbeth Co.). Table 1 shows the recording densities of 9th and 16th gradations (steps) out of all 16 gradations (steps). For the thermal recording materials obtained in Examples 5 and 7, the recording densities of all 16 gradations (steps) are shown in a graph in FIG.
- the thermal recording medium was allowed to stand for 24 hours in an environment of 23 ° C x 20% RH, and recorded in gradation mode using a thermal printing printer UP-DF500 (manufactured by Sony Corporation).
- the density of the recording part was measured in the visual mode of the Macbeth densitometer. Table 1 shows the recording density of the 9th gradation (step) of all 16 gradations.
- A represents the recording density value under the environment of 23 ° CX 20% RH.
- B represents the recording density value under the environment of 23 ° CX 50% RH.
- the thermal recording material was treated in an environment of 60 ° C X 20% RH for 24 hours, and the unrecorded part was measured in a visual mode of a Macbe densitometer (trade name: TR_927J model Macbeth).
- the thermal recording medium After leaving the thermal recording medium in an environment of 23 ° CX 50% RH for 24 hours, it is recorded in the gradation mode using the thermal printing printer UP-DF500 (manufactured by Sony Corporation), and the environment of 40 ° CX 90% RH. Under the treatment for 24 hours, the degree of whitening of the recorded portion after the treatment was visually measured and evaluated according to the following. The results are shown in Table 1.
- Example 1 I. 29 2. 61 1. 06 -17, 8 0. 21 ⁇ ⁇ Example 2 1. 15 3. 40 0. 92 -20. 0 0. 21 ⁇ ⁇ Example 3 1. 16 3. 38 0. 93 -19. 8 0. 22 ⁇ ⁇ Example 4 1. 21 2. 54 1. 00 -17. 4 0. 21 ⁇ ⁇ Example 5 1. 04 3. 28 0. 84 -19. 2 0. 22 ⁇ ⁇ Example 6 1. 32 3. 14 1. 18 -10. 6 0. 21 ⁇ ⁇ Example 7 1. 33 3. 16 1. 19 —10. 5 0. 21 ⁇ ⁇ Comparative Example 1 1. 34 2. 65 1. 12 -16. 4 0. 23 XX Comparative example 2 1. 21 3. 31 0. 95 -21. 5 0. 22 ⁇ ⁇ Comparative example 3 1. 35 3. 45 0. 71 -47. 4 0. 23 ⁇
- Comparative example 5 0. 89 3. 21 0. 32 -64. 0 0. 22 ⁇ ⁇ Comparative example 6 1.53 3-59 1.16 1 24. 2 0.36 ⁇ ⁇
- the thermal recording material of the example of the present application had a fluctuation percentage of 20% or less, and it was shown that the change in recording density due to environmental humidity change was small. In addition, a value of 0.3 or less was obtained for the heat-resistant surface capability, indicating that the heat-resistant surface capability was also excellent. In addition, it was shown that the image quality was excellent and the image quality was excellent.
- the thermal recording material (Examples 3 and 5 to 7) in which the colorant further contains 4-hydroxy-1,4'-aryloxydiphenyl sulfone has a ⁇ Evaluation was obtained and it was found that whitening prevention was better.
- the thermal recording material (Example 5) further containing N- (p-tolylsulfonyl) -l'-phenylurea is a thermal recording material not containing (Example 5).
- the change in recording density with respect to the applied energy was suppressed, and the fluctuation of the recording density was moderate.
- fine gradation can be realized particularly in the halftone region by using ⁇ - ( ⁇ -tolylsulfonyl) 1 ⁇ '-phenylurea in combination.
- the heat-sensitive recording material of the present invention is characterized by little change in recording sensitivity due to changes in environmental humidity, and excellent image quality and heat-resistant background capriability.
- the heat-sensitive recording material of the present invention having such characteristics is suitably used for various applications that require a constant recording density.
- thermosensitive recording material of the present invention is capable of recording with multiple gradations, and is strongly required to have a constant recording density regardless of environmental humidity changes.
- thermal recording material used for image diagnosis such as MRI image diagnosis and X-ray image diagnosis.
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- Optics & Photonics (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006548839A JP4631852B2 (ja) | 2004-12-13 | 2005-12-13 | 感熱記録体 |
KR1020077012661A KR100932294B1 (ko) | 2004-12-13 | 2005-12-13 | 감열 기록체 |
EP05816768A EP1826018B1 (en) | 2004-12-13 | 2005-12-13 | Thermosensitive recording medium |
DE602005009973T DE602005009973D1 (de) | 2004-12-13 | 2005-12-13 | Wärmeempfindliches aufzeichnungsmedium |
US11/792,061 US7897541B2 (en) | 2004-12-13 | 2005-12-13 | Thermosensitive recording medium |
CNB2005800428437A CN100532116C (zh) | 2004-12-13 | 2005-12-13 | 热敏记录介质 |
HK08101423.7A HK1110842A1 (en) | 2004-12-13 | 2008-02-05 | Thermosensitive recording medium |
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JP2004-359300 | 2004-12-13 | ||
JP2004359300 | 2004-12-13 | ||
JP2005-057208 | 2005-03-02 | ||
JP2005057208 | 2005-03-02 | ||
JP2005260004 | 2005-09-08 | ||
JP2005-260004 | 2005-09-08 |
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WO2006064778A1 true WO2006064778A1 (ja) | 2006-06-22 |
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PCT/JP2005/022815 WO2006064778A1 (ja) | 2004-12-13 | 2005-12-13 | 感熱記録体 |
Country Status (8)
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US (1) | US7897541B2 (ja) |
EP (1) | EP1826018B1 (ja) |
JP (1) | JP4631852B2 (ja) |
KR (1) | KR100932294B1 (ja) |
CN (1) | CN100532116C (ja) |
DE (1) | DE602005009973D1 (ja) |
HK (1) | HK1110842A1 (ja) |
WO (1) | WO2006064778A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009262327A (ja) * | 2008-04-21 | 2009-11-12 | Oji Paper Co Ltd | ロイコ染料含有樹脂複合微粒子およびこの複合微粒子を含む感熱記録体 |
JP2011031504A (ja) * | 2009-08-03 | 2011-02-17 | Oji Paper Co Ltd | 感熱記録体 |
Families Citing this family (7)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5621388B2 (ja) † | 2009-08-05 | 2014-11-12 | 株式会社リコー | 感熱記録材料 |
US9222015B2 (en) * | 2009-11-24 | 2015-12-29 | Swift River Properties, Llc | Thermochromic coating and method of manufacturing thereof |
JP5954186B2 (ja) * | 2013-01-10 | 2016-07-20 | 王子ホールディングス株式会社 | 多色感熱記録材料及びその多色感熱記録材料の発色方法 |
US10582714B2 (en) | 2015-07-10 | 2020-03-10 | Mead Johnson Nutrition Company | Nutritional compositions and methods for promoting cognitive development |
US10617701B2 (en) | 2015-07-10 | 2020-04-14 | Mead Johnson Nutrition Company | Nutritional compositions containing phosphatidylethanolamine, sphingomyelin and docosahexaenoic acid |
US10466506B2 (en) | 2016-12-21 | 2019-11-05 | Johnson & Johnson Vision Care, Inc. | Methods and apparatus for biomedical devices with customized appearance |
EP3680110B1 (en) * | 2019-01-14 | 2022-11-09 | Ricoh Company, Ltd. | Thermosensitive recording material |
Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS60244594A (ja) | 1984-10-23 | 1985-12-04 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JPS6186283A (ja) | 1984-10-05 | 1986-05-01 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JPH05147357A (ja) | 1991-10-04 | 1993-06-15 | Oji Paper Co Ltd | 感熱記録体 |
JPH0976641A (ja) | 1995-09-19 | 1997-03-25 | Oji Paper Co Ltd | 感熱記録体 |
JPH09263057A (ja) | 1996-03-27 | 1997-10-07 | Oji Paper Co Ltd | 染料前駆体含有樹脂複合微粒子およびこの複合微粒子を含む感熱記録材料 |
JPH09309270A (ja) * | 1996-05-21 | 1997-12-02 | Oji Paper Co Ltd | 感熱記録体 |
JP2000158822A (ja) | 1997-11-27 | 2000-06-13 | Mitsubishi Paper Mills Ltd | 感熱記録材料 |
JP2001113841A (ja) * | 1999-10-22 | 2001-04-24 | Nippon Kayaku Co Ltd | 感熱記録材料 |
JP2003054137A (ja) * | 2001-08-13 | 2003-02-26 | Oji Paper Co Ltd | 感熱記録体 |
JP2003118234A (ja) * | 2001-10-15 | 2003-04-23 | Oji Paper Co Ltd | 感熱記録体 |
JP2003266951A (ja) | 2002-03-20 | 2003-09-25 | Oji Paper Co Ltd | 感熱記録体 |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1135540A (en) * | 1966-06-01 | 1968-12-04 | Ncr Co | Temperature responsive record material |
EP0535887B1 (en) * | 1991-10-04 | 1995-07-19 | New Oji Paper Co., Ltd. | Thermosensitive recording material |
US5804528A (en) | 1995-11-20 | 1998-09-08 | Oji Paper Co., Ltd. | Thermosensitive recording material with a high fog resistance |
US6232266B1 (en) * | 1997-11-27 | 2001-05-15 | Mitsubishi Paper Mills Limited | Heat-sensitive recording material |
JP3919151B2 (ja) * | 2000-04-28 | 2007-05-23 | 株式会社リコー | 感熱記録材料 |
-
2005
- 2005-12-13 US US11/792,061 patent/US7897541B2/en not_active Expired - Fee Related
- 2005-12-13 DE DE602005009973T patent/DE602005009973D1/de active Active
- 2005-12-13 WO PCT/JP2005/022815 patent/WO2006064778A1/ja active IP Right Grant
- 2005-12-13 CN CNB2005800428437A patent/CN100532116C/zh not_active Expired - Fee Related
- 2005-12-13 EP EP05816768A patent/EP1826018B1/en not_active Expired - Fee Related
- 2005-12-13 KR KR1020077012661A patent/KR100932294B1/ko active IP Right Grant
- 2005-12-13 JP JP2006548839A patent/JP4631852B2/ja not_active Expired - Fee Related
-
2008
- 2008-02-05 HK HK08101423.7A patent/HK1110842A1/xx not_active IP Right Cessation
Patent Citations (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6186283A (ja) | 1984-10-05 | 1986-05-01 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JPS60244594A (ja) | 1984-10-23 | 1985-12-04 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JPH05147357A (ja) | 1991-10-04 | 1993-06-15 | Oji Paper Co Ltd | 感熱記録体 |
JPH0976641A (ja) | 1995-09-19 | 1997-03-25 | Oji Paper Co Ltd | 感熱記録体 |
JPH09263057A (ja) | 1996-03-27 | 1997-10-07 | Oji Paper Co Ltd | 染料前駆体含有樹脂複合微粒子およびこの複合微粒子を含む感熱記録材料 |
JPH09309270A (ja) * | 1996-05-21 | 1997-12-02 | Oji Paper Co Ltd | 感熱記録体 |
JP2000158822A (ja) | 1997-11-27 | 2000-06-13 | Mitsubishi Paper Mills Ltd | 感熱記録材料 |
JP2001113841A (ja) * | 1999-10-22 | 2001-04-24 | Nippon Kayaku Co Ltd | 感熱記録材料 |
JP2003054137A (ja) * | 2001-08-13 | 2003-02-26 | Oji Paper Co Ltd | 感熱記録体 |
JP2003118234A (ja) * | 2001-10-15 | 2003-04-23 | Oji Paper Co Ltd | 感熱記録体 |
JP2003266951A (ja) | 2002-03-20 | 2003-09-25 | Oji Paper Co Ltd | 感熱記録体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1826018A4 * |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2009262327A (ja) * | 2008-04-21 | 2009-11-12 | Oji Paper Co Ltd | ロイコ染料含有樹脂複合微粒子およびこの複合微粒子を含む感熱記録体 |
JP2011031504A (ja) * | 2009-08-03 | 2011-02-17 | Oji Paper Co Ltd | 感熱記録体 |
Also Published As
Publication number | Publication date |
---|---|
US20080108500A1 (en) | 2008-05-08 |
EP1826018A1 (en) | 2007-08-29 |
US7897541B2 (en) | 2011-03-01 |
KR100932294B1 (ko) | 2009-12-16 |
JP4631852B2 (ja) | 2011-02-16 |
KR20070093397A (ko) | 2007-09-18 |
JPWO2006064778A1 (ja) | 2008-06-12 |
EP1826018B1 (en) | 2008-09-24 |
HK1110842A1 (en) | 2008-07-25 |
EP1826018A4 (en) | 2008-02-20 |
CN100532116C (zh) | 2009-08-26 |
DE602005009973D1 (de) | 2008-11-06 |
CN101080328A (zh) | 2007-11-28 |
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