WO2014097881A1 - Corps de thermogravure - Google Patents

Corps de thermogravure Download PDF

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Publication number
WO2014097881A1
WO2014097881A1 PCT/JP2013/082451 JP2013082451W WO2014097881A1 WO 2014097881 A1 WO2014097881 A1 WO 2014097881A1 JP 2013082451 W JP2013082451 W JP 2013082451W WO 2014097881 A1 WO2014097881 A1 WO 2014097881A1
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WO
WIPO (PCT)
Prior art keywords
heat
sensitive recording
parts
methyl
recording layer
Prior art date
Application number
PCT/JP2013/082451
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English (en)
Japanese (ja)
Inventor
荻野　明人
平井　健二
Original Assignee
日本製紙株式会社
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Publication date
Priority claimed from JP2012275299A external-priority patent/JP2016028847A/ja
Priority claimed from JP2013117692A external-priority patent/JP2016028848A/ja
Application filed by 日本製紙株式会社 filed Critical 日本製紙株式会社
Publication of WO2014097881A1 publication Critical patent/WO2014097881A1/fr

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Classifications

    • 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

Definitions

  • the present invention utilizes a coloring reaction between a colorless or light-colored electron-donating leuco dye (hereinafter also referred to as “leuco dye”) and an electron-accepting developer (hereinafter also referred to as “developer”).
  • leuco dye colorless or light-colored electron-donating leuco dye
  • developer electron-accepting developer
  • the present invention relates to a heat-sensitive recording material, which is excellent in heat discoloration at a white paper portion and particularly excellent in barcode reading ability.
  • a thermal recording material is usually a colorless or light leuco dye and a developer such as a phenolic compound, each of which is ground and dispersed into fine particles, and then mixed together to form a binder, a filler, a sensitivity improver,
  • a coating solution obtained by adding a lubricant and other auxiliary agents is applied to a support such as paper, synthetic paper, film, plastic, etc., such as thermal head, hot stamp, thermal pen, laser beam, etc. Color is generated by an instantaneous chemical reaction by heating, and a recorded image is obtained.
  • Thermosensitive recording media are widely used as recording media for facsimiles, computer terminal printers, automatic ticket vending machines, recorders for measurement, receipts for supermarkets and convenience stores, and the like.
  • the media used has been miniaturized, such as for handy terminals, and for recording and labeling and ticketing applications, color sensitivity and image quality, especially barcode readability, are required. It has been.
  • it is often used outdoors for labels and used for food, etc., so that it is not difficult to read the image part due to moisture and moisture such as rain, etc.
  • the plasticizer contained in the synthetic leather used in these materials does not make it difficult to read the image area.
  • storage stability such as plasticizer properties
  • excellent performance has begun to be required.
  • As a method for improving the storage stability of the image area it is generally known to provide a protective layer on the thermosensitive recording layer.
  • the protective layer absorbs the thermal energy given from the thermal head, so that there is a problem that the color development performance, that is, the color development sensitivity and image quality are inferior.
  • the color development sensitivity decreases and the difference in contrast between the print area and the white paper area becomes small, when the barcode is printed, it cannot be read by a reader even if it can be visually observed.
  • aptitude was insufficient.
  • Patent Document 1 a heat-sensitive recording material that improves the storage stability of the image area, or by using a combination of a specific sensitizer and a stabilizer.
  • thermal recording media Patent Documents 2 to 4 etc.
  • storage stability such as water resistance and plasticizer resistance
  • a heat-sensitive recording material Patent Document 5, etc.
  • the color development performance and the storage stability of the image part are improved by using a combination of two specific color developers. Due to the inferior properties, the white paper portion will develop color when the thermal recording material is stored in a high temperature environment. For this reason, the difference in contrast (contrast) between the printed portion and the white paper portion is reduced, and the barcode readability is insufficient.
  • an object of the present invention is to provide a heat-sensitive recording material that is excellent in both the color development performance and the heat discoloration property of the white paper portion even under a harsh environment, and as a result, has good barcode readability.
  • the present invention is a heat-sensitive recording material provided with a heat-sensitive recording layer containing a colorless or light-colored electron-donating leuco dye and an electron-accepting developer on a support, and the heat-sensitive recording layer comprises an electron As a receptive developer (i) the following chemical formula (Ii) 4-hydroxy-4′-allyloxydiphenyl sulfone and the following general formula (Formula 2)
  • a heat-sensitive recording material comprising at least one selected from the group consisting of urea urethane compounds represented by the formula:
  • the present invention it is possible to provide a heat-sensitive recording material that is excellent in both color development performance and heat discoloration resistance of a white paper portion even under a harsh environment, and as a result, has good barcode readability. Furthermore, by providing a protective layer on the heat-sensitive recording material, it is possible to provide a heat-sensitive recording material that is particularly excellent in water resistance, plasticizer resistance in the image area, and heat discoloration resistance in the white paper area, and also has good color development performance. It is.
  • the heat-sensitive recording layer of the heat-sensitive recording material of the present invention comprises (i) the following chemical formula (Formula 1) as a developer. And (ii) 4-hydroxy-4′-allyloxydiphenyl sulfone represented by the following general formula (Formula 2): Containing at least one selected from the group consisting of urea urethane compounds represented by the formula:
  • the heat-sensitive recording layer of the present invention uses, as a developer, the sulfonic acid compound represented by the above chemical formula (Chemical Formula 1) and another developer having a structure that interacts therewith, the following It is considered effective. That is, when the heat-sensitive recording layer of the present invention contains a sulfonic acid compound represented by the above chemical formula (Formula 1) and 4-hydroxy-4′-allyloxydiphenyl sulfone as a developer, the heat-sensitive recording layer is heated and melted.
  • the heat-sensitive recording layer of the present invention contains a sulfonic acid compound represented by the above chemical formula (Chemical Formula 1) and a urethane urea compound represented by the above General Formula (Chemical Formula 2) as a developer, the heat-sensitive recording layer.
  • the protective layer when a protective layer is provided on the thermal recording material, that is, when the protective layer absorbs part of the thermal energy given from the thermal head or the like and the thermal energy is low, the developer and leuco It is presumed that the stability of the electron transfer complex, which is a reaction product with the dye, is sufficiently high so that the color development sensitivity does not decrease and the bar code reading suitability of the resulting thermal recording material is good.
  • urea urethane compounds are specifically three types represented by the following formulas (Chemical Formula 3) to (Chemical Formula 5), and these may be used alone or in combination of two or more.
  • a developer other than the above compounds may be used in combination.
  • WO 02/081229 The compounds described in WO 02/081229 and the like are available as trade names NKK-395 and D-100 manufactured by Nippon Soda Co., Ltd.
  • a metal chelate color-developing component such as a higher fatty acid metal double salt and a polyvalent hydroxyaromatic compound described in JP-A-10-258577 can also be contained.
  • 4-hydroxy-4′-allyloxydiphenyl sulfone or the urea urethane type represented by the general formula (Chemical Formula 2) is used per 1 part by weight of the sulfonic acid type compound represented by the chemical formula (Chemical Formula 1).
  • the compound is preferably used in a proportion of 0.01 to 10.0 parts by weight, more preferably 0.1 to 5.0 parts by weight.
  • 4-hydroxy-4'-allyloxydiphenyl sulfone or urea urethane compound represented by the above general formula (Chemical Formula 2) is 0.01% per 1 part by weight of the sulfonic acid type compound represented by the chemical formula (Chemical Formula 1).
  • the heat-sensitive recording layer of the present invention comprises a sulfonic acid compound represented by the above chemical formula (Chemical Formula 1), 4-hydroxy-4′-allyloxydiphenyl sulfone, or a urea urethane compound represented by the above General Formula (Chemical Formula 2)
  • a developer other than the above is contained, the sulfonic acid compound represented by the above chemical formula (Chemical Formula 1), 4-hydroxy-4′-allyloxydiphenyl sulfone, and the urea urethane represented by the above general formula (Chemical Formula 2)
  • the total content of the series compounds is the total developer contained in the thermosensitive recording layer (the sulfonic acid series compound represented by the above chemical formula (Chemical Formula 1), 4-hydroxy-4′-allyloxy
  • binders, cross-linking agents, pigments, and the like may be used as necessary as long as they do not hinder the desired effects on the above-described problems. It can also be used for each coating layer such as a provided protective layer.
  • any known leuco dyes in the field of conventional pressure-sensitive or thermal recording paper can be used, and are not particularly limited, but include triphenylmethane compounds, fluoran compounds, fluorenes. Of these, divinyl compounds and divinyl compounds are preferred. Specific examples of typical colorless or light-colored dyes (dye precursors) are shown below. These dye precursors may be used alone or in combination of two or more.
  • Triphenylmethane leuco dye 3,3-bis (p-dimethylaminophenyl) -6-dimethylaminophthalide (also known as crystal violet lactone), 3,3-bis (p-dimethylaminophenyl) phthalide (also known as malachite green lactone)
  • sensitizer used in the present invention, a conventionally known sensitizer can be used.
  • sensitizers include fatty acid amides such as stearamide and palmitic acid amide, ethylene bisamide, montanic acid wax, polyethylene wax, 1,2-bis- (3-methylphenoxy) ethane, p-benzylbiphenyl, ⁇ - Benzyloxynaphthalene, 4-biphenyl-p-tolyl ether, m-terphenyl, 1,2-diphenoxyethane, dibenzyl oxalate, di (p-chlorobenzyl) oxalate, di (p-methylbenzyl) oxalate, Dibenzyl terephthalate, benzyl p-benzyloxybenzoate, di-p-tolyl carbonate, phenyl- ⁇ -naphthyl carbonate, 1,4-diethoxynaphthalene, 1-hydroxy-2-naphthoic acid
  • pigment used in the present invention examples include kaolin, calcined kaolin, calcium carbonate, aluminum oxide, titanium oxide, magnesium carbonate, aluminum silicate, magnesium silicate, calcium silicate, aluminum hydroxide, and silica, depending on the required quality. It can also be used together.
  • the binder used in the present invention includes fully saponified polyvinyl alcohol, partially saponified polyvinyl alcohol, acetoacetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol, amide-modified polyvinyl alcohol, sulfonic acid-modified polyvinyl alcohol, butyral-modified polyvinyl alcohol, and olefin-modified.
  • crosslinking agent used in the present invention examples include glyoxal, methylol melamine, melamine formaldehyde resin, melamine urea resin, polyamine epichlorohydrin resin, polyamide epichlorohydrin resin, potassium persulfate, ammonium persulfate, sodium persulfate, chloride chloride
  • examples include ferric iron, magnesium chloride, borax, boric acid, alum, ammonium chloride and the like.
  • lubricant used in the present invention examples include fatty acid metal salts such as zinc stearate and calcium stearate, waxes, silicone resins and the like.
  • 2,2'-di-t-butyl-5,5'-dimethyl-4,4'-sulfonyldiphenol, 1,1,3-tris (2-methyl-4-hydroxy-5-cyclohexylphenyl) butane, 1,3-tris (2-methyl-4-hydroxy-5-t-butylphenyl) butane and the like can also be added.
  • benzophenone and triazole ultraviolet absorbers, dispersants, antifoaming agents, antioxidants, fluorescent dyes, and the like can be used.
  • the types and amounts of the leuco dye, developer, sensitizer, and other various components used in the heat-sensitive recording layer of the present invention are determined according to the required performance and recording suitability, and are not particularly limited. Usually, 0.5 to 10 parts by weight of developer, 0.1 to 10 parts by weight of sensitizer, 0.5 to 20 parts by weight of pigment, and 0.01 to 10 parts by weight of stabilizer for 1 part by weight of leuco dye. Parts and other components of about 0.01 to 10 parts by weight.
  • the binder is suitably about 5 to 25% by weight in the solid content of the heat-sensitive recording layer.
  • the leuco dye, the developer, and the material to be added as necessary are finely divided to a particle size of several microns or less by a pulverizer such as a ball mill, an attritor, or a sand glider, or a suitable emulsifying device, Depending on the purpose, various additive materials are added to obtain a coating solution.
  • a pulverizer such as a ball mill, an attritor, or a sand glider, or a suitable emulsifying device
  • various additive materials are added to obtain a coating solution.
  • the solvent used in the coating solution water or alcohol can be used, and its solid content is about 20 to 40% by weight.
  • a protective layer can be further provided on the heat-sensitive recording layer.
  • the protective layer is mainly composed of a pigment and a resin, and binders, pigments, crosslinking agents and the like exemplified as materials that can be used for the heat-sensitive recording layer can be used.
  • the content of the pigment and binder in the protective layer is about 30 to 300 parts by weight in solid content of the binder with respect to 100 parts by weight of the pigment.
  • the heat-sensitive recording material of the present invention has a heat-sensitive recording layer on a support, but an undercoat layer can be provided between the support and the heat-sensitive recording layer.
  • This undercoat layer mainly comprises a binder and a pigment.
  • the binder used for the undercoat layer a commonly used water-soluble polymer or hydrophobic polymer emulsion or the like can be appropriately used.
  • cellulose derivatives such as polyvinyl alcohol, polyvinyl acetal, hydroxyethyl cellulose, methyl cellulose, carboxymethyl cellulose, starch and derivatives thereof, polysodium acrylate, polyvinyl pyrrolidone, acrylate / acrylate copolymers, acrylic acid Water-soluble polymers such as amide / acrylic acid ester / methacrylic acid copolymer, styrene / maleic anhydride copolymer alkali salt, isobutylene / maleic anhydride copolymer alkali salt, polyacrylamide, sodium alginate, gelatin, casein, Polyvinyl acetate, polyurethane, styrene / butadiene copolymer, polyacrylic acid, polyacrylate ester, vinyl chloride / vinyl acetate copolymer, polybutyl methacrylate, ethylene / acetic acid Cycloalkenyl copolymer, can be used
  • pigments used in the undercoat layer known pigments generally used conventionally, specific examples include calcium carbonate, silica, zinc oxide, titanium oxide, aluminum hydroxide, magnesium hydroxide, calcined kaolin, clay, talc, etc.
  • Inorganic pigments can be used. These pigments may be used alone or in combination of two or more.
  • the pigment in the undercoat layer is usually 50 to 95 parts by weight, preferably 70 to 90 parts by weight with respect to 100 parts by weight of the total solid content.
  • Various additives such as a dispersant, a plasticizer, a pH adjuster, an antifoaming agent, a water retention agent, an antiseptic, a coloring dye, and an ultraviolet ray inhibitor may be appropriately blended in the undercoat layer coating liquid as necessary. Good.
  • the means for coating the heat-sensitive recording layer and the coating layer other than the heat-sensitive recording layer is not particularly limited, and can be applied according to a well-known conventional technique.
  • an off-machine coating machine or an on-machine coating machine equipped with various coaters such as an air knife coater, a rod blade coater, a vent blade coater, a bevel blade coater, a roll coater, and a curtain coater is appropriately selected and used.
  • the coating amount of the coating layer other than the heat-sensitive recording layer and the heat-sensitive recording layer is determined according to the required performance and recording suitability, and is not particularly limited, but the general coating amount of the heat-sensitive recording layer is solid. It is about 2 to 12 g / m 2 per minute.
  • various known techniques in the heat-sensitive recording material field can be added as appropriate, such as applying a smoothing process such as supercalendering after coating each layer.
  • Example 1 A composition comprising the following composition was stirred and dispersed to prepare an undercoat layer coating solution.
  • the coating amount of the undercoat layer coating solution is 10.0 g in solid content on one side of the support (basis weight 47 g / m 2 fine paper). After coating by the vent blade method so as to be / m 2 , drying was performed to obtain an undercoat layer coated paper.
  • First developer dispersions 1 to 2 (A1 liquid to A2 liquid), second developer dispersions 1 to 2 (B1 liquid to B2 liquid), leuco dye dispersion liquid (C liquid) and sensitization of the following composition
  • the agent dispersion liquid (liquid D) was separately wet-ground with a sand grinder until the average particle size became 0.5 microns.
  • First developer dispersion 1 A sulfonic acid compound represented by the chemical formula (Chemical Formula 1) (manufactured by BASF, trade name: DP201) 6.0 parts Completely saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., trade name: PVA) 117, solid content 10%) 5.0 parts water 1.5 parts first developer dispersion 2 (liquid A2) Diphenylsulfone cross-linking compound (Nippon Soda Co., Ltd., trade name: D90) 6.0 parts Completely saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., trade name: PVA) 117, solid content 10%) 5.0 parts water 1.5 parts
  • Second developer dispersion 1 (B1 solution) 4-hydroxy-4′-allyloxydiphenyl sulfone (manufactured by Nikka Chemical Co., Ltd.)
  • Product name: BPS-MAE 6.0 parts Completely saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., product name: PVA) 117, solid content 10%) 5.0 parts water 1.5 parts
  • second developer dispersion 2 (B2 liquid) Urethane urea compound represented by the chemical formula (Chemical Formula 3) (Chemipro Kasei Co., Ltd., Product name: UU) 6.0 parts Completely saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., product name: PVA) 117, solid content 10%) 5.0 parts water 1.5 parts
  • Leuco dye dispersion liquid C
  • Libibutylamino-6-methyl-7-anilinofluorane manufactured by Yamamoto Kasei Co., Ltd., trade name: ODB-2
  • 6.0 parts fully saponified polyvinyl alcohol aqueous solution manufactured by Kuraray Co., Ltd., trade name: PVA
  • 117, solid content 10% 5.0 parts water
  • sensitizer dispersion liquid D
  • 1,2-bis- (3-methylphenoxy) ethane manufactured by Sanko Co., Ltd., trade name: KS232
  • 6.0 parts Completely saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., trade name: PVA) 117, solid content 10%) 5.0 parts water 1.5 parts
  • thermal recording layer coating solution 1 > 1st developer dispersion 1 (A1 liquid) 18.0 parts 2nd developer dispersion 1 (B1 liquid) 18.0 parts Leuco dye dispersion (liquid C) 18.0 parts Sensitizer dispersion ( Liquid D) 36.0 parts Silica dispersion (manufactured by Mizusawa Chemical Co., Ltd., trade name: Mizukasil P-537, solid content 25%) 17.5 parts Complete saponified polyvinyl alcohol aqueous solution (Kuraray Co., Ltd., trade name: PVA) 117, solid content 10%) 25.0 parts
  • heat-sensitive recording layer coating solution 1 is applied onto the undercoat layer of the undercoat layer-coated paper so that the solid coating amount is 6.0 g / m 2. After coating by the blade method, drying was performed, and processing was performed with a super calender so that the smoothness became 500 to 1000 seconds, thereby
  • Example 2 6.0 parts of 1,2-bis- (3-methylphenoxy) ethane (manufactured by Sanko Co., Ltd., trade name: KS232) in the sensitizer dispersion (liquid D) was mixed with stearic acid amide / paltimic acid amide mixture (mixing ratio). : 7/3, Nippon Kasei Co., Ltd., trade name: AP-1) A heat-sensitive recording material was produced in the same manner as in Example 1 except that 6.0 parts were used.
  • Example 3 6.0 parts of 3-dibutylamino-6-methyl-7-anilinofluorane (manufactured by Yamamoto Kasei Co., Ltd., trade name: ODB-2) in the leuco dye dispersion (liquid C) was mixed with 3-di-n-pentyl.
  • a thermosensitive recording material was produced in the same manner as in Example 1 except that 6.0 parts of amino-6-methyl-7-anilinofluorane (trade name: BLACK305, manufactured by Yamada Chemical Co., Ltd.) was used.
  • Example 4 The amount of silica dispersion in the heat-sensitive recording layer coating liquid 1 is changed from 17.5 parts to 7.5 parts to obtain a heat-sensitive recording layer coating liquid 2, and the heat-sensitive recording layer coating liquid 2 is applied to the undercoat layer coating.
  • the undercoat layer of paper After coating by the rod blade method so that the coating amount is 6.0 g / m 2 in terms of solid content, drying is performed so that the smoothness becomes 500 to 1000 seconds with a super calendar.
  • the heat-sensitive recording layer coated paper was produced by processing. Subsequently, the mixture which consists of the following ratio was mixed and the protective layer coating liquid was prepared.
  • ⁇ Protective layer coating solution Aluminum hydroxide dispersion (manufactured by Martinsberg, Product name: Martyfin OL, solid content 50%) 9.0 parts Carboxy-modified polyvinyl alcohol aqueous solution (manufactured by Kuraray Co., Ltd., product name: KL) 318, solid content 10%) 30.0 parts Polyamide epichlorohydrin resin (manufactured by Seiko PMC, trade name: WS40) 30, solid content 25%) 4.0 parts Zinc stearate (manufactured by Chukyo Yushi Co., Ltd., trade name: Hydrin Z-7-30, (Solid content: 30%) 2.0 parts Next, the protective layer coating liquid was applied onto the heat-sensitive recording layer of the heat-sensitive recording layer-coated paper so that the coating amount was 3.0 g / m 2 in terms of solid content. After coating by the method, drying was performed to produce a heat-sensitive recording material.
  • Example 5 6.0 parts of 1,2-bis- (3-methylphenoxy) ethane (manufactured by Sanko Co., Ltd., trade name: KS232) in the sensitizer dispersion (liquid D) was mixed with stearic acid amide / paltimic acid amide mixture (mixing ratio). : 7/3, manufactured by Nippon Kasei Co., Ltd., trade name: AP-1) A heat-sensitive recording material was produced in the same manner as in Example 4 except that 6.0 parts was used.
  • Example 6 6.0 parts of 3-dibutylamino-6-methyl-7-anilinofluorane (manufactured by Yamamoto Kasei Co., Ltd., trade name: ODB-2) in the leuco dye dispersion (liquid C) was mixed with 3-di-n-pentyl.
  • a thermosensitive recording material was produced in the same manner as in Example 4 except that 6.0 parts of amino-6-methyl-7-anilinofluorane (trade name: BLACK305, manufactured by Yamada Chemical Co., Ltd.) was used.
  • Example 7 The second developer dispersion liquid 1 (B1 liquid) of the heat-sensitive recording layer coating liquid 1 is replaced with the second developer dispersion liquid 2 (B2 liquid) to form a heat-sensitive recording layer coating liquid 3, and the heat-sensitive recording layer coating is performed.
  • a heat-sensitive recording material was produced in the same manner as in Example 1 except that the liquid 1 was replaced with the heat-sensitive recording layer coating liquid 3.
  • Example 8 6.0 parts of 1,2-bis- (3-methylphenoxy) ethane (manufactured by Sanko Co., Ltd., trade name: KS232) in the sensitizer dispersion (liquid D) was mixed with stearic acid amide / paltimic acid amide mixture (mixing ratio).
  • Example 9 A heat-sensitive recording material was produced in the same manner as in Example 7 except that 6.0 parts were used.
  • 6.0 parts of 3-dibutylamino-6-methyl-7-anilinofluorane (manufactured by Yamamoto Kasei Co., Ltd., trade name: ODB-2) in the leuco dye dispersion (liquid C) was mixed with 3-di-n-pentyl.
  • a thermosensitive recording material was produced in the same manner as in Example 7 except that 6.0 parts of amino-6-methyl-7-anilinofluorane (trade name: BLACK305, manufactured by Yamada Chemical Co., Ltd.) was used.
  • Example 10 The second developer dispersion liquid 1 (B1 liquid) of the heat-sensitive recording layer coating liquid 2 is replaced with the second developer dispersion liquid 2 (B2 liquid) to obtain a heat-sensitive recording layer coating liquid 4, and the heat-sensitive recording layer coating is applied.
  • the liquid 4 was applied on the undercoat layer of the undercoat layer coated paper by the rod blade method so that the coating amount was 6.0 g / m 2 as a solid content, and then dried, and the smoothness was measured with a super calendar.
  • the heat-sensitive recording layer-coated paper was obtained by processing for 500 to 1000 seconds.
  • the protective layer coating solution is applied onto the heat-sensitive recording layer of the heat-sensitive recording layer-coated paper by the rod blade method so that the coating amount is 3.0 g / m 2 in solids, and then dried.
  • a heat-sensitive recording material was produced.
  • Example 12 A heat-sensitive recording material was produced in the same manner as in Example 10 except that 6.0 parts were used.
  • Example 12 6.0 parts of 3-dibutylamino-6-methyl-7-anilinofluorane (manufactured by Yamamoto Kasei Co., Ltd., trade name: ODB-2) in the leuco dye dispersion (liquid C) was mixed with 3-di-n-pentyl.
  • a thermosensitive recording material was produced in the same manner as in Example 10, except that 6.0 parts of amino-6-methyl-7-anilinofluorane (trade name: BLACK305, manufactured by Yamada Chemical Co., Ltd.) were used.
  • thermosensitive recording material was produced in the same manner as described above.
  • Comparative Example 2 Example 1 except that 0 parts of the first developer dispersion 1 (A1 liquid) and 36.0 parts of the second developer dispersion 1 (B1 liquid) in the thermosensitive recording layer coating liquid 1 were used. A thermosensitive recording material was produced in the same manner as described above.
  • Example 7 except that 0 parts of the first developer dispersion 1 (A1 liquid) and 36.0 parts of the second developer dispersion 2 (B2 liquid) in the thermosensitive recording layer coating liquid 3 were used.
  • a thermosensitive recording material was produced in the same manner as described above.
  • the first developer dispersion liquid 1 (A1 liquid) of the heat-sensitive recording layer coating liquid 1 is replaced with the first developer dispersion liquid 2 (A2 liquid) to obtain a heat-sensitive recording layer coating liquid 5, and the heat-sensitive recording layer coating is applied.
  • a heat-sensitive recording material was produced in the same manner as in Example 1 except that the liquid 1 was replaced with the heat-sensitive recording layer coating liquid 5.
  • thermosensitive recording material The following evaluation was performed about the produced thermosensitive recording material.
  • the produced thermal recording medium is a checkered pattern using a TH-PMD manufactured by Okura Electric Co., Ltd. (with thermal recording paper printing tester and Kyocera thermal head installed) with an applied energy of 0.35 mJ / dot and a printing speed of 50 mm / sec. Is printed.
  • the printing density of the printing part was measured with a Macbeth densitometer (RD-914, using an amber filter) to evaluate the color development performance.
  • Ground color development value (density of non-printed area after processing)-(density of non-printed area before processing) Excellent: Ground color development value is less than 0.1 Good: Ground color development value is 0.1 or more and less than 0.3 Possible: Ground color development value is 0.3 or more and less than 0.5 Impossibility: Ground color development value is 0.00. 5 or more

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Heat Sensitive Colour Forming Recording (AREA)

Abstract

[Problème] Le but de la présente invention est de proposer un corps de thermogravure qui ait à la fois d'excellentes performances de fixation de la couleur et une résistance à la décoloration thermique dans les sections vierges et qui offre une excellente lisibilité des codes à barres. [Solution] L'invention concerne un corps de thermogravure dans lequel une couche de thermogravure comprenant un colorant leucodérivé incolore ou légèrement coloré, électrodonneur et un révélateur électroaccepteur est disposée sur un corps support, le corps de thermogravure étant caractérisé en ce que la couche de thermogravure comprend, comme révélateur électroaccepteur, un composé spécifique à base d'acide sulfonique et au moins un type de composé choisi dans le groupe constitué de 4-hydroxy-4'-allyloxydiphénylsulfone et de composés spécifiques à base d'urée-uréthane.
PCT/JP2013/082451 2012-12-18 2013-12-03 Corps de thermogravure WO2014097881A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2012-275299 2012-12-18
JP2012275299A JP2016028847A (ja) 2012-12-18 2012-12-18 感熱記録体
JP2013-117692 2013-06-04
JP2013117692A JP2016028848A (ja) 2013-06-04 2013-06-04 感熱記録体

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2020152667A (ja) * 2019-03-19 2020-09-24 三光株式会社 Ｎ，ｎ’−ジアリール尿素誘導体及びその製造方法、並びに、それを用いた感熱記録材料

Citations (4)

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