WO2006035567A1 - 感熱記録体 - Google Patents
感熱記録体 Download PDFInfo
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- WO2006035567A1 WO2006035567A1 PCT/JP2005/015824 JP2005015824W WO2006035567A1 WO 2006035567 A1 WO2006035567 A1 WO 2006035567A1 JP 2005015824 W JP2005015824 W JP 2005015824W WO 2006035567 A1 WO2006035567 A1 WO 2006035567A1
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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
- B41M5/40—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
- B41M5/426—Intermediate, backcoat, or covering layers characterised by inorganic compounds, e.g. metals, metal salts, metal complexes
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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
- B41M5/337—Additives; Binders
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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
- B41M5/337—Additives; Binders
- B41M5/3377—Inorganic compounds, e.g. metal salts of organic acids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/04—Direct thermal recording [DTR]
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/38—Intermediate layers; Layers between substrate and imaging layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M2205/00—Printing methods or features related to printing methods; Location or type of the layers
- B41M2205/40—Cover layers; Layers separated from substrate by imaging layer; Protective layers; Layers applied before imaging
Definitions
- the present invention relates to a thermosensitive recording material utilizing a coloring reaction of a basic colorless dye and a developer, and in particular to a thermosensitive recording material excellent in color development, sensitivity and image quality.
- a heat-sensitive material mainly composed of a colorless or light-colored electron-donating leuco dye (hereinafter referred to as a dye) and an electron-accepting developer (hereinafter referred to as a developer) that reacts to heat when heated with a dye.
- a dye colorless or light-colored electron-donating leuco dye
- a developer electron-accepting developer
- This thermal recording method is more compact than other recording methods that have been put into practical use: no noise during recording, no need for development and fixing, maintenance-free, relatively inexpensive equipment, and It is characterized by the fact that the color obtained is very sharp, and is widely used in facsimiles, computer terminal printers, automatic ticket vending machines, measuring recorders, handy terminals used outdoors, etc.
- this thermal recording medium in addition to the output sheets of the various devices described above, it is also used in fields such as cash voucher sheets that require high storage performance.
- the recording apparatus itself has also been widely used and its performance has been enhanced (speeding up, downsizing, etc.), so the thermal recording material has higher color sensitivity and low printing density. It is required that recorded images of high image quality can be obtained in any area from high print density to high print density.
- thermosensitive recording material As a method for improving the color development sensitivity and recording image quality of a thermosensitive recording material, the smoothness of the surface of the thermosensitive recording material and the undercoat layer provided between the support and the thermosensitive recording layer is enhanced by a super calender or the like. It is known.
- Patent Document 1 in order to provide a thermal recording material excellent in dot reproducibility (image quality), A first intermediate layer and a second intermediate layer are sequentially laminated between the support and the thermosensitive coloring layer, and the first interlayer has an Oken type smoothness of 700 seconds or more, and the density of the second intermediate layer It is stated that the value of. Is less than 0.1.
- Patent Document 2 describes that scaly silica is contained in an intermediate layer provided between a support and a thermosensitive recording layer. However, when the smoothness of the heat-sensitive recording material is enhanced by a super calender, etc., high-quality recorded images can be obtained, but the pressure of the calender makes the layer constituting the heat-sensitive recording material porous (heat insulation ) Decreases.
- thermosensitive recording layer is lowered, and high color development sensitivity can not be obtained. Furthermore, in recent years the level of demand for image quality has been increasing, and satisfactory quality can not be obtained simply by improving the smoothness of the surface of the thermal recording material or the undercoat layer.
- heat-sensitive recording materials on which fixed information such as logo marks and ridge lines are printed in advance, such as offset printing, are often used.
- Patent Document 3 discloses a technology in which aluminum hydroxide is contained in the heat sensitive layer in the protective layer
- Patent Document 4 discloses a high gloss heat sensitive recording material. Discloses a technique for providing a protective layer to obtain. However, if a protective layer is provided, the heat conduction to the thermosensitive recording layer will be slow, resulting in disadvantages such as a decrease in sensitivity, a decrease in printing speed, or an increase in printing energy. Increasing the number of layers raises the problem of rising manufacturing costs.
- thermosensitive recording material in order to obtain high color development sensitivity, there is a technology to blend silica with high oil absorption into the thermosensitive recording layer and fix the dissolved dye and developer, but if it is blended with silica gel etc., the thermosensitive recording material The decrease in glossiness causes a problem that high print gloss can not be obtained. As described above, at present, no thermosensitive recording material having high coloring sensitivity and high gloss in the printed area when printed by general printing such as offset printing has not been obtained.
- the heat-sensitive recording material can be prepared by using an ink such as a water-based ink pen or an oil-based ink pen, or an adhesive.
- an ink such as a water-based ink pen or an oil-based ink pen
- an adhesive such as an adhesive to the image.
- Patent Documents 5 and 6 disclose a technique of providing a protective layer containing a pigment and a resin as main components on a heat-sensitive recording material in order to eliminate such defects.
- thermosensitive recording material has been expanded to various ticket, receipt, label, ATM for banks, meter reading of gas and electricity, and gold vouchers such as car betting tickets, and so this is why It is beginning to be required for the thermosensitive recording material to have such severe characteristics that have not been a problem in the past.
- the quality of the protective layer that withstands use in harsher environments than before, such as moisture and moisture such as rain, sunlight, and high-temperature conditions in midsummer, is often used outdoors. Performance is required.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2 0 0 0-1 0 8 5 1 8
- Patent Document 2 Japanese Patent Application Laid-Open No. 2 0 0 2-1 3 7 5 4 2
- Patent Document 3 Patent No. 2 7 8 6 9 1 2
- Patent Document 4 Japanese Patent Application Laid-Open No. H09-1 5 6 2 2 2
- Patent Document 5 JP-A 4 8-3 0 4 3 7
- Patent Document 6 Japanese Patent Application Laid-Open No. 4 8 1 3 1 9 5 8 Disclosure of the Invention
- an object of the present invention is to provide a thermosensitive recording material excellent in coloring sensitivity and image quality.
- thermosensitive recording layers comprising at least a colorless or pale electron donating leuco dye and an electron accepting developer on at least a support are provided.
- a heat-sensitive recording material comprising layers, at least one layer provided on a support is The inventors have found that the above problems can be solved by containing a pigment having a pigment ratio of 30 or more, and the present invention has been completed.
- the use of kaolin for pigments with an aspect ratio of 30 or more exhibits excellent effects.
- thermosensitive recording material contains a pigment having an apex ratio of 30 or more
- the above problems can be solved, and the high gloss, general printability, particularly high print area glossiness are achieved.
- a filler having an aspect ratio of 30 or more in the protective layer an effect of excellent storage stability and head abrasion resistance of the recorded image part and the blank part is exhibited.
- FIG. 1 is an explanatory view of the aspect ratio of the present invention, and the aspect ratio is represented by a value obtained by dividing the diameter by the thickness.
- the heat-sensitive recording material of the present invention is characterized in that at least one layer provided on the support contains a filler having an absorption ratio of 30 or more.
- the light absorption ratio of the pigment is obtained by photographing the powder with an electron microscope, and using the diameter and thickness shown in FIG. It is a value calculated using the average, and the larger the value of the aspect ratio, the larger the degree of flatness of the pigment.
- the pigment having an apex ratio of 30 or more used in the present invention is very flat compared to the pigment generally used as a papermaking material, and the coating layer containing this pigment is Excellent coverability, surface smoothness and glossiness.
- the reason is presumed as follows.
- the weight of pigment needed to cover the same area is less for pigments with higher aspect ratios. For example, comparing the pigment A with an aspect ratio of 20 and the pigment B with an aspect ratio of 40, the minimum required amount of the pigment B theoretically becomes half of the minimum required amount of the pigment A. For this reason, it is possible to form a highly coated coating layer with a small amount of coating.
- thermosensitive recording material that is porous and has excellent surface smoothness.
- the pigment is contained in the protective layer, the thermosensitive recording layer, and the undercoat layer will be described with respect to the thermosensitive recording material of the present invention containing a pigment having an absorbance ratio of 30 or more.
- thermosensitive recording layer when the protective layer which is the outermost layer of the thermosensitive recording material contains a pigment having an apex ratio of 30 or more, the thermosensitive recording layer is coated with a coating amount smaller than that of the conventional protective layer. be able to.
- the structure of the heat-sensitive recording material in which a pigment having an aspect ratio of 30 or more is contained in the protective layer which is the outermost layer described here has a structure of heat-sensitive recording layer / protective layer, undercoat layer / heat-sensitive recording on a support. There may be a layer / protective layer combination, and pigments other than the protective layer may have a pigment ratio of 30 or more.
- a protective layer containing a pigment having an apparent ratio of 30 or more By providing a protective layer containing a pigment having an apparent ratio of 30 or more, the storage stability of the image area and the white paper area is improved, and the decrease in thermal conductivity to the heat-sensitive recording layer is suppressed. As a result, good color sensitivity and recorded images can be obtained. Further, by containing a pigment having an aspect ratio of 30 or more, the smoothness and the gloss of the coated layer surface are improved. For this reason, the target smoothness can be obtained by processing such as low pressure super calender, and as a result, good color developing sensitivity and recorded image can be obtained.
- the average diameter of pigments with an aspect ratio of at least 30 contained in the protective layer is greater than 4 ⁇ m And exposure of the coating layer to the surface of the coated layer, resulting in problems such as surface smoothness, recording quality, gloss, print area gloss, and friction with the thermal head (head wear). Occur.
- the particle size of the filler with an aspect ratio of 30 or more be as follows.
- the oil absorption of the additive having an aspect ratio of 30 or more is from 300 to 1000 m 1/100 g, the ink receptivity and the gloss of the printed area in general printing become good.
- a thermosensitive recording material having high print area gloss can not be obtained. If the density ratio of the material contained in the protective layer is 1000 or more, the protective layer becomes dense, so problems such as ink receptivity and ink drying property in general printing and color sensitivity decrease. Will occur. Therefore, in the present invention, a more preferable aspect ratio of the pigment contained in the heat-sensitive recording layer is 30 to 100, and more preferably 30 to 75.
- inorganic pigments used in the present day of the month include kaolin, (calcined) kaolin, calcium carbonate, aluminum oxide, titanium oxide, magnesium carbonate, aluminum silicate, magnesium silicate, calcium silicate, aluminum hydroxide, There may be mentioned kerosene, talc and the like, without being limited thereto, among such inorganic pigments, one having an aspect ratio of 30 or more is used.
- the inorganic pigment of the present invention is characterized in that the shape is large, and it is a compound having a large amount of thin plate-like pigment compared to the pigment generally used, and one having this shape is selected and used, or By classification, it is used in the range specified in the present invention.
- an inorganic pigment having an aspect ratio of 30 or more in order to exert an effect due to its specific shape, it is preferable to use it alone. If the inorganic pigment having a cut ratio of 30 or more is at least 50 parts by weight, more preferably at least 80 parts by weight, it can be used in combination with various pigments having a paste ratio of less than 30.
- inorganic pigments having an aspect ratio of 30 or more hydroxylamine hydroxide, silica and kaolin are preferable from the viewpoint of head abrasion resistance. Above all, image quality, sensitivity and general printability, Kaolin is preferred for reasons of economics. Such kaolin can be obtained by classifying the force-laminated olein by special grinding.
- completely saponified polyvinyl alcohol having a degree of polymerization of 200 to 190, partially saponified polyvinyl alcohol, acetylated polyvinyl alcohol, carboxy-modified polyvinyl alcohol as a binder, Amide modified polyvinyl alcohol, sulfonic acid modified polyvinyl alcohol, butyral modified polyvinyl alcohol, alefin modified polyvinyl alcohol, ditrile modified polyvinyl alcohol, pyrrolidone modified polyvinyl alcohol, silicone modified polyvinyl alcohol, other modified polyvinyl alcohols , Hydroxyethyl cellulose, methyl cellulose, ethyl cellulose, carboxymethyl cellulose, styrene / monoanhydride-maleic acid copolymer, styrene / butadiene copolymer and Cellulose derivatives such as acetylcellulose, acetylcellulose, casein, arabia gum,
- solvents such as water, alcohols, ketones, esters, hydrocarbons, etc. and used, or used in the form of being dispersed in water or other medium in the form of emulsion or paste, and the required quality Depending on the situation, it can be used together.
- the content of the inorganic pigment having an aspect ratio of 30 or more and the binder 1 used in the present invention is usually about 30 to 300 parts by weight in solid content with respect to 100 parts by weight of the inorganic pigment. .
- the coating amount is about 1 to 5 g / m 2 and it is easily carried out by applying on a thermosensitive recording layer using a conventional coating machine.
- An intermediate layer may be provided between the thermosensitive recording layer and the protective layer, and the protective layer may be formed on this intermediate layer.
- known coating methods such as air one knife method, blade method, gravure method, roll coating method, curtain method, etc. Any of the cloth methods may be used.
- thermosensitive recording layer of the heat-sensitive recording material contains a pigment having an apex ratio of 30 or more
- the structure of the heat-sensitive recording material is the undercoat layer Z heat-sensitive recording layer / protection on the support.
- thermosensitive recording layer of the thermosensitive recording medium when a pigment having an apex ratio of 30 or more is contained in the thermosensitive recording layer of the thermosensitive recording medium, the pigment conventionally used for the same reason as that in the protective layer described above. Coverage and smoothness are improved compared to the case of using.
- thermosensitive recording material when the composition of the thermosensitive recording material is only the undercoat layer / thermosensitive recording layer and the thermosensitive recording layer on the support, that is, the outermost layer of the thermosensitive recording material is a pigment having an absorbance ratio of 30 or more.
- the heat from the thermal head of the thermal printer is uniformly transmitted, and excellent color developing sensitivity is developed, and when printed by general printing such as offset printing, the gloss of the printed area A high thermosensitive recording material can be obtained.
- thermosensitive recording material When the composition of the thermosensitive recording material is: undercoat, thermosensitive recording layer / protective layer, thermosensitive recording layer / protective layer, a pigment having an absorbance ratio of 30 or more is contained on the support.
- a protective layer is provided on the thermosensitive recording layer, the excellent smoothness of the thermosensitive recording layer also affects the smoothness of the protective layer provided on the thermosensitive recording layer, so that good color development sensitivity and image quality of the recorded image can be obtained. be able to.
- the pigment contained in the heat-sensitive recording layer and the pigment which can be used in combination with each other may be the same as the pigment used in the protective layer described above. Is desirable.
- inorganic pigments with an aspect ratio of 30 or more are preferably used alone because they exhibit their effects due to their specific shape, it is preferable to use the inorganic pigment with respect to 100 parts by weight of the total blending parts of the pigment. If the inorganic pigment having a peak ratio of 30 or more is at least 50 parts by weight, more preferably at least 80 parts by weight, it can be used in combination with various pigments having an aspect ratio of less than 30.
- the blending amount of the pigment having an absorbance ratio of 30 or more contained in the thermosensitive recording layer is preferably 10% to 70%, and more preferably 10% in weight ratio to the thermosensitive recording layer. ⁇ 5 0%. If the blending amount is too small, the smoothness and glossiness will be low, and if the blending amount is too large, the blending ratio of the dye and the developer will be small, and it will be difficult to obtain good color development sensitivity and recorded image. In the case where the surface layer is the outermost layer, the resistance to head wear decreases.
- binder used in the heat-sensitive recording layer of the heat-sensitive recording material of the present invention it is desirable to appropriately select from the binders used in the above-mentioned protective layer.
- benzophenonone-based or triazole-based ultraviolet absorbers can be used.
- dispersants can be used.
- antifoaming agents can be used.
- antioxidants can be used.
- fluorescent dyes can be used.
- the electron donating leuco dyes used in the present invention all known ones in the field of conventional pressure-sensitive or heat-sensitive recording paper can be used, and although not particularly limited, trifenylmethane compounds, fluoran dyes Compounds, fluorenes, divinyl compounds and the like are preferable. Specific examples of representative colorless to pale dyes (dye precursors) are shown below. These dye precursors may be used alone or in combination of two or more.
- Inorganic acidic substances such as pulgelite, colloidal silica, aluminum silicate, etc., 4, 4, 1 isopropylidene diphenol, 1 1 1 bis (4 hydroxyphenyl) cyclohexane, 2, 2 bis (4 Hydroxyphenyl) monomethylidene, 4, 4, monohydroxydiphenyl sulfide, hydroquinone monobenzyl ether, benzyl 4-hydroxybenzoate, 4, 4, dihydroxydiphenylsulfone 2, 4, Dihydroxy diphenyl sulfone, 4-hydroxy 4, mono isopropoxydiphenyl sulfone, 4- hydroxy 4, 1 n-propoxydiphenylsulfone, bis (3-aryl-4-hydroxyphenyl) sulfone, 4-hydroxy-1, 4-methyldiphenylsulfone, 4-hydroxyphenyl-2, 4-benzimidazole phenylsulfone, 3, 4 Mono-dihydroxyphenyl 4-, 4-methylphenylsulfone, an aminobenzene
- Phenolic compounds such as diphenylsulfone crosslinkable compounds described in International Publication WO 9 7/1640, International Publication WO 0 2/0 8 1 2 2 9 or JP-A 02 0 2 0 2 The compounds described in JP-A No.
- thiourea compounds such as N, N, di-m-chloro-thio-thiourea, p-chloro-benzoic acid, stearyl gallate, bis [4 1 (n —Oxyloxycarbonylamino) salicylic acid] dihydrate, 4-mono [2- (p-metoki] Schiffenoxy) Hydroxyl] salicylic acid, 4-[3-(p-Tolylsulfonyl) pure piroxi] salicylic acid, 5-[p-(2-p-Metoxyphenoxytoxy) cilyl] aromatic carboxylic acid of salicylic acid, And salts of these aromatic carboxylic acids with zinc, magnesium, aluminum, calcium, titanium, manganese, tin, nickel, and other multivalent metal salts, as well as antipyrine complexes of zinc thiocyanate, terephthalaldehyde acids and others And complex zinc salts with aromatic carboxylic acids, and the like.
- diphenyl sulfone cross-linked compound described in International Publication WO 97/1660 is available as Nippon Soda Co., Ltd. under the trade name D-90.
- a compound described in International Publication WO 02/0821929 etc. is available as Nippon Soda Co., Ltd. product name D-1000.
- metal chelate type color-forming components such as higher fatty acid metal complex salts and polyvalent hydroxyaromatic compounds described in JP-A-10-25787 can also be contained.
- sensitizers used in the heat-sensitive recording material of the present invention include fatty acid amides such as stearic acid amide and palmitic acid amide, ethylene bisamide, montanic acid wax and polyethylene wax,
- the type and amount of the electron donating leuco dye, electron accepting developer and other various components used in the thermal recording material of the present invention are determined according to the required performance and recording suitability, and are not particularly limited. Usually, about 0.5 to 10 parts of an electron-accepting developer and about 0.5 to 10 parts of a sensitizer are used with respect to 1 part of the electron donating leuco dye.
- Electron-donating leuco dyes, electron-accepting developers, and materials to be added as required have a particle size of several microns or less by means of a ball mill, attritor, a grinder such as a sand glider or a suitable emulsifying device. Atomize to a maximum and add various additives according to the binder and purpose to make a coating solution.
- the means for applying is not particularly limited, and may be applied according to well-known conventional techniques, for example, air knife coater, rod blade coater, vent blade coater, bevel blade coater, roll coater Off-machine coaters and on-machine coaters equipped with various types of coasters are selected and used appropriately.
- the coating amount of the heat-sensitive recording layer is not particularly limited, and is usually in the range of 2 to 12 g / m by dry weight.
- thermosensitive recording material contains a pigment having an absorbance ratio of 30 or more
- the construction of the thermosensitive recording material is as follows: undercoat layer / thermosensitive recording layer / protective layer, There may be an undercoat layer / thermosensitive recording layer combination, and pigments other than the thermosensitive recording layer may have a pigment ratio of 3 0 or more.
- the undercoat layer of the heat-sensitive recording material contains a pigment having an apex ratio of 30 or more, the pigment conventionally used for the same reason as that in the protective layer described above. Coverage and smoothness are improved compared to the case of using.
- thermosensitive recording material when the composition of the thermosensitive recording material is base coat / thermosensitive recording layer / protective layer, undercoat layer / thermosensitive recording layer on the support, that is, it contains a pigment having an absorbency ratio of 30 or more.
- a primer having good surface smoothness is provided on the coated undercoat layer. Since the layer also affects the smoothness of the thermosensitive recording layer and / or the protective layer provided thereon, it is possible to obtain good color development sensitivity and image quality of the recorded image.
- the heat-sensitive recording material of the present invention it is desirable to use the same pigments as those used for the protective layer described above as the pigments contained in the undercoat layer and the pigments having an aspect ratio of 30 or more and the pigments which can be used in combination. . Also, although it is preferable to use a pigment having an aspect ratio of 30 or more alone in order to exert an effect due to its specific shape, it is preferable to use a pigment relative to 100 parts by weight of the total blending parts of the food. If the inorganic pigment having a peak ratio of not less than 30 is at least 50 parts by weight, more preferably at least 80 parts by weight, it can be used in combination with various pigments having an object ratio of less than 30.
- the binder is preferably selected from the binders used in the protective layer described above, and is preferably about 10 to 40 with respect to 100 parts of the pigment contained in the undercoat layer. .
- the protective layer, the thermosensitive recording layer, and the subbing layer include glioxal, methylolmelamine, melamine-formaldehyde resin, polyamidedichlorohydrin resin, potassium persulfate, ammonium persulfate, sodium persulfate, Crosslinking agents such as ferric chloride, magnesium chloride, borax, boric acid, alum, ammonium chloride, fatty acid metal salts such as zinc stearate, calcium stearate, lubricants such as waxes, silicone resins, dyes, fluorescent dyes UV absorbers, antioxidants, anti-stick agents, anti-blocking agents, etc. can be used as appropriate.
- a composite sheet combining paper, recycled paper, synthetic paper, film, plastic film, foamed plastic film, non-woven fabric, etc. can be used as a support of the heat-sensitive recording material of the present invention.
- the heat-sensitive recording material of the present invention is additionally provided with various known techniques in the heat-sensitive recording material field, such as being subjected to smoothing treatment such as supercalendering after coating of each layer for the purpose of enhancing color development sensitivity. It is also possible to provide a backcoat layer on the side of the support opposite to the thermosensitive recording layer to correct curling. It is also possible to appropriately provide an intermediate layer between the heat sensitive recording layer and the protective layer.
- good coloring sensitivity and recorded image can be obtained by incorporating a pigment having an absorption ratio of 30 or more in any layer provided on the support.
- the color developing sensitivity and the recorded image can be further improved, and the effect such as printing gloss is exhibited.
- the blending ratio of pigments having an aspect ratio of 30 or more can be made higher than the blending ratio of the thermosensitive recording layer, and therefore, the highest effect can be obtained by incorporating it in the protective layer.
- the heat-sensitive recording material of the present invention will be described below by way of examples.
- thermosensitive coloring layer An under layer and a thermosensitive coloring layer were formed on one side of the supports prepared in Examples and Comparative Examples, and a protective layer was formed as needed. A back layer was formed on one side.
- thermosensitive recording material was prepared as follows.
- Styrene-butadiene copolymer latex (solid content 50) 10 0
- the mixture having the above composition was mixed and stirred to prepare an undercoat layer 1.
- High aspect ratio kaolin (Immers Co., Ltd. 15000) 90.0 parts Styrene-Butadiene copolymer latex (solid content 50%) 100 parts
- the mixture consisting of the above composition was mixed and stirred to prepare an undercoat layer 2.
- Liquid A (Color developer dispersion)
- Liquid B (basic colorless dye dispersion)
- Solution B (30% basic colorless dye dispersion) 18.8 parts
- Oil absorption amount 45 ml / 100 g, average diameter 2.5 ⁇ m 1.
- Solution A (22 developer dispersion) 1 3.5 parts
- Liquid C (16% photosensitive agent dispersion) 26.9 parts Engineered kaolin: CONT0UR1500 (30% dispersion) 0.2 parts Polyvinyl alcohol (10% solution) 3 2.2 parts Recording layer coating solution 5
- Liquid C (16% sensitiser dispersion) 18.9 parts Kaolin: Rio Force Pim Capim NP (30% dispersion) 100 parts oil absorption 45 ml / 100 g
- Liquid C (16% photosensitive agent dispersion liquid) 18.9 parts Silica: Nip seal manufactured by Nippon Silica Co., Ltd. E-743 (30% dispersion liquid) 100 parts Oil absorption amount 110 ml 800 g
- Liquid C (16% photosensitive resin dispersion liquid) 18.9 parts My strength: Cop Chemical MK100 (30% dispersion liquid) 100 parts refueling amount 25 ml / 100 g
- Liquid C (16% photosensitive agent dispersion liquid) 1 8. 9 parts Kaolin: manufactured by Rio Force Pim Capim CC (30% dispersion liquid) 1 0. 0 parts oil absorption 45 ml / 100 g
- Liquid C (16% photosensitive resin dispersion liquid) 1 8. 9 parts Kaolin: made by Imerys ASTLA plate (30% dispersion liquid) 1 0. 0 parts oil absorption 45 ml 800 g
- Liquid A (Color developer dispersion) 1 8. 9 parts
- Kaolin manufactured by Imerys: Ultimat 30 parts, oil absorption 35 ml / 100 g
- Kaolin (I ME RYS product name: nt our 500) 9. 0 parts Carboxy-modified PV A (Kuraray product name: PVA-KL 1 18) 30 parts Polyamide de epichlorohydrin (Star light PMC company : WS 4020) 2.0 parts Zinc stearate (manufactured by Chukyo Yushi Co., Ltd .: HYDRIN L-536) 2. 0 parts Protective layer coating solution 3
- Carboxy-modified PVA (Kuraray Co., Ltd .: PVA-KL1 18) 70 parts Polyamide doepiclochlorohydrin (WS 4020) 5 parts Zinc stearate (Chukyo Yushi Co., Ltd .: Hydrin L1 536) 5 parts Protective layer coating solution
- Polyamide doepiclochlorohydrin (WS 4020) 5 parts Zinc stearate (Chukyo Yushi Co., Ltd .: Hydrin L1 536) 5 parts Protective layer coating solution
- Under layer coating solution 1 was coated on a high quality paper of high quality paper (basis weight: 47 g / m 2 ) with a meyer bar, and dried with a blower drier (120 ° C., 1 minute). Recording layer coating liquid 1 on this under paper It was coated with a Meyer bar and dried with a blast drier (60, 2 minutes). Furthermore, on the back side, the back layer paint is applied with a Mayer bar, dried with a blast drier (60 ° C, 2 minutes), and the smoothness is set to be 500 to 700 seconds. Calender processing was performed to obtain a heat-sensitive recording material. Incidentally, under layer coating, the recording layer coating, coated amount was calculated from the weight difference of the pack layer coating was 8 g / m 2, 5. 1 g / m 2, 0. 3 g / m 2.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 2 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that Recording Layer Coating Liquid 3 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 4 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 5 was used.
- thermosensitive recording medium was produced in the same manner as in Example 1 except that a recording layer coating solution 10 was used.
- a heat-sensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 11 was used.
- a heat-sensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 12 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 6 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 7 was used.
- thermosensitive recording material was produced in the same manner as in Example 1 except that the recording layer coating solution 8 was used.
- a heat-sensitive recording layer was formed in the same manner as in Example 1 except that the recording layer coating solution 13 was used, and the protective layer coating solution 2 was coated thereon with a Mayer bar, and a blower drier (60 ° C., Dried for 2 minutes). Furthermore, as in Example 1, the back layer paint was coated with a Meyer bar, and after drying, the smoothness was improved.
- Spar calendering was performed to obtain 1 500 seconds to 200 seconds to obtain a heat-sensitive recording material.
- the coating amount of the protective layer determined from the weight difference was 2.6 g / m 2 .
- thermosensitive recording material was produced in the same manner as in Example 9 except that the protective layer coating solution 1 was used.
- thermosensitive recording material was produced in the same manner as in Example 2 except that Under Coating Liquid 2 was used.
- a protective coating solution 2 was coated on the heat-sensitive recording material prepared in Example 1 in the same manner as in Example 9 to prepare a heat-sensitive recording material.
- a protective coating solution 2 was coated on the heat-sensitive recording material prepared in Example 2 in the same manner as in Example 9 to prepare a heat-sensitive recording material.
- thermosensitive recording material was produced in the same manner as in Example 9 except that Under Coating Liquid 2 was used.
- thermosensitive recording material was produced in the same manner as in Example 9 except that the protective layer coating solution 3 was used.
- thermosensitive recording material was produced in the same manner as in Example 13 except that the protective layer coating liquid 3 was used.
- thermosensitive recording material was produced in the same manner as in Example 12 except that the protective layer coating liquid 3 was used.
- a recording layer coating solution 13 was coated on a high quality paper of high quality paper (basis weight: 47 g / m 2 ) using a mayer bar, and dried with a blower drier (60 ° C., 2 minutes).
- the coating solution 2 for the protective layer was coated thereon with a mayor bar and dried with a blast drier (60 ° C., 2 minutes).
- the back layer is coated with a paint with a Mayerper and dried with a blast dryer (60 ° C, 2 minutes), and the smoothness is 1 5
- thermosensitive recording material was produced in the same manner as in Example 17 except that the protective layer coating solution 3 was used.
- thermosensitive recording material was produced in the same manner as in Example 17 except that the recording layer coating solution 2 and the protective layer coating solution 3 were used.
- the recording layer coating solution 2 is coated on a high quality paper of high quality paper (basis weight: 4 7 g / m 2 ) using a mayer bar, It was dried in a wind dryer (60 ° C., 2 minutes).
- the back layer is coated with a paint layer with Meyerba and dried with a blast drier (60 for 2 minutes), and then the surface is subjected to spar calendering so as to have a smoothness of 500 to 700 seconds.
- the heat-sensitive recording material was obtained.
- the coating amounts obtained from the weight difference between the recording layer paint, the protective layer paint and the back layer paint were 5.1 g / m 2 and 0.3 g / m 2 .
- thermosensitive recording material was produced in the same manner as in Example 17 except that the recording layer coating liquid 2 was used.
- thermosensitive recording material was produced in the same manner as in Example 19 except that the recording layer coating solution 13 was used.
- thermosensitive recording material was produced in the same manner as in Comparative Example 4 except that the under layer coating solution 2 was used.
- thermosensitive recording material was produced in the same manner as in Comparative Example 2 except that the under layer coating solution 2 was used.
- thermosensitive recording material was produced in the same manner as in Example 15 except that the protective layer coating solution 4 was used.
- the aspect ratio and oil absorption of the used pigment are summarized in Table 1, and Table 2 shows the performance of the example and the comparative example.
- the measurement and evaluation methods for the performance of the pigment and the thermosensitive recording material are as follows.
- Photograph the pigment with an electron microscope measure the length in the X-axis, Y-axis, and Z-axis directions for 100 particles, average the longest axis of each particle and the second longest axis, and measure the diameter of each particle Calculate The average value was calculated.
- the ratio of the diameter to the length (thickness) of the shortest axis (the following formula) was calculated for 100 particles, and the average value was calculated.
- Printing was carried out using an Okura thermal printer TH-PMD (N0.8), and the gradation # 14 part was measured with a Macbeth densitometer.
- the 60 ° gloss of the sample was measured with a gloss meter manufactured by Murakami Color Research Laboratory.
- ⁇ 50% or more, less than 80%
- the solid printed portion was visually evaluated.
- the surface abrasion evaluation of the head was evaluated after printing 100 000 lines of the head friction evaluation pattern using a SAIC Marublin ter DPU 4 1 1 manufactured by SEIKO 1 It was worth it.
- thermosensitive recording material excellent in color development sensitivity and image quality.
- the outermost layer of the heat-sensitive recording material contains a pigment having an apex ratio of 30 or more, the above problems are solved and a high gloss having general printability, particularly high print area glossiness, is achieved.
- a pigment having an aspect ratio of 30 or more in the protective layer the storage stability of the recorded image area and the white paper area is further improved. You can get a record.
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- Chemical & Material Sciences (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Heat Sensitive Colour Forming Recording (AREA)
Abstract
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2006537655A JP3971453B2 (ja) | 2004-09-29 | 2005-08-24 | 感熱記録体 |
KR1020077009434A KR100875585B1 (ko) | 2004-09-29 | 2005-08-24 | 감열 기록체 |
DE602005011165T DE602005011165D1 (de) | 2004-09-29 | 2005-08-24 | Wärmeempfindliches aufzeichnungsmedium |
EP05781465A EP1800888B1 (en) | 2004-09-29 | 2005-08-24 | Thermally sensitive recording medium |
US11/663,230 US7387984B2 (en) | 2004-09-29 | 2005-08-24 | Thermally sensitive recording medium |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2004-282904 | 2004-09-29 | ||
JP2004282904 | 2004-09-29 | ||
JP2005075036 | 2005-03-16 | ||
JP2005-075036 | 2005-03-16 |
Publications (1)
Publication Number | Publication Date |
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WO2006035567A1 true WO2006035567A1 (ja) | 2006-04-06 |
Family
ID=36118719
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2005/015824 WO2006035567A1 (ja) | 2004-09-29 | 2005-08-24 | 感熱記録体 |
Country Status (6)
Country | Link |
---|---|
US (1) | US7387984B2 (ja) |
EP (1) | EP1800888B1 (ja) |
JP (1) | JP3971453B2 (ja) |
KR (1) | KR100875585B1 (ja) |
DE (1) | DE602005011165D1 (ja) |
WO (1) | WO2006035567A1 (ja) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011025484A (ja) * | 2009-07-24 | 2011-02-10 | Oji Paper Co Ltd | 多色感熱記録材料 |
JP2012218311A (ja) * | 2011-04-11 | 2012-11-12 | Oji Paper Co Ltd | 感熱記録体 |
JP2018509316A (ja) * | 2015-06-24 | 2018-04-05 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
JP2021511982A (ja) * | 2018-01-31 | 2021-05-13 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8083423B2 (en) * | 2006-03-01 | 2011-12-27 | Ncr Corporation | Thermal indicators |
ATE522364T1 (de) | 2007-05-10 | 2011-09-15 | Jujo Paper Co Ltd | Wärmeempfindliches aufzeichnungsmaterial |
US8492308B2 (en) | 2007-08-21 | 2013-07-23 | Nippon Paper Industries Co., Ltd. | Thermosensitive recording medium |
US8466085B2 (en) | 2007-08-29 | 2013-06-18 | Nippon Paper Industries Co., Ltd. | Thermosensitive recording medium |
US8609582B2 (en) | 2009-03-24 | 2013-12-17 | Nippon Paper Industries Co., Ltd. | Thermosensitive recording medium |
WO2010140662A1 (ja) | 2009-06-05 | 2010-12-09 | 日本製紙株式会社 | 感熱記録体 |
CN102574409B (zh) | 2009-10-14 | 2015-07-22 | 王子控股株式会社 | 热敏记录材料 |
JPWO2011114780A1 (ja) | 2010-03-15 | 2013-06-27 | 日本製紙株式会社 | 感熱記録体 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08282112A (ja) * | 1995-04-14 | 1996-10-29 | Fuji Photo Film Co Ltd | 記録材料 |
JP2000177244A (ja) * | 1998-12-11 | 2000-06-27 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JP2001199164A (ja) * | 2000-01-18 | 2001-07-24 | Fuji Photo Film Co Ltd | 記録材料 |
JP2005254471A (ja) * | 2004-03-09 | 2005-09-22 | Nippon Paper Industries Co Ltd | 感熱記録体 |
-
2005
- 2005-08-24 KR KR1020077009434A patent/KR100875585B1/ko active IP Right Grant
- 2005-08-24 EP EP05781465A patent/EP1800888B1/en active Active
- 2005-08-24 US US11/663,230 patent/US7387984B2/en not_active Expired - Fee Related
- 2005-08-24 DE DE602005011165T patent/DE602005011165D1/de active Active
- 2005-08-24 WO PCT/JP2005/015824 patent/WO2006035567A1/ja active Application Filing
- 2005-08-24 JP JP2006537655A patent/JP3971453B2/ja active Active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH08282112A (ja) * | 1995-04-14 | 1996-10-29 | Fuji Photo Film Co Ltd | 記録材料 |
JP2000177244A (ja) * | 1998-12-11 | 2000-06-27 | Fuji Photo Film Co Ltd | 感熱記録材料 |
JP2001199164A (ja) * | 2000-01-18 | 2001-07-24 | Fuji Photo Film Co Ltd | 記録材料 |
JP2005254471A (ja) * | 2004-03-09 | 2005-09-22 | Nippon Paper Industries Co Ltd | 感熱記録体 |
Non-Patent Citations (1)
Title |
---|
See also references of EP1800888A4 * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011025484A (ja) * | 2009-07-24 | 2011-02-10 | Oji Paper Co Ltd | 多色感熱記録材料 |
JP2012218311A (ja) * | 2011-04-11 | 2012-11-12 | Oji Paper Co Ltd | 感熱記録体 |
JP2018509316A (ja) * | 2015-06-24 | 2018-04-05 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
JP2019206188A (ja) * | 2015-06-24 | 2019-12-05 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
JP2021511982A (ja) * | 2018-01-31 | 2021-05-13 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
JP7307735B2 (ja) | 2018-01-31 | 2023-07-12 | ミツビシ ハイテック ペーパー ヨーロップ ゲゼルシャフト ミット ベシュレンクテル ハフツング | 感熱記録材料 |
US11752793B2 (en) | 2018-01-31 | 2023-09-12 | Mitsubishi Hitec Paper Europe Gmbh | Heat-sensitive recording material |
Also Published As
Publication number | Publication date |
---|---|
EP1800888A4 (en) | 2008-03-05 |
KR100875585B1 (ko) | 2008-12-23 |
DE602005011165D1 (de) | 2009-01-02 |
US20080076663A1 (en) | 2008-03-27 |
KR20070057984A (ko) | 2007-06-07 |
US7387984B2 (en) | 2008-06-17 |
JP3971453B2 (ja) | 2007-09-05 |
EP1800888B1 (en) | 2008-11-19 |
JPWO2006035567A1 (ja) | 2008-05-15 |
EP1800888A1 (en) | 2007-06-27 |
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