WO2006004006A1 - インクジェットインクとそれを用いる印刷方法 - Google Patents
インクジェットインクとそれを用いる印刷方法 Download PDFInfo
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- WO2006004006A1 WO2006004006A1 PCT/JP2005/012106 JP2005012106W WO2006004006A1 WO 2006004006 A1 WO2006004006 A1 WO 2006004006A1 JP 2005012106 W JP2005012106 W JP 2005012106W WO 2006004006 A1 WO2006004006 A1 WO 2006004006A1
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- ink
- surfactant
- weight
- inkjet ink
- printing
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Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
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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
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D11/00—Inks
- C09D11/30—Inkjet printing inks
- C09D11/38—Inkjet printing inks characterised by non-macromolecular additives other than solvents, pigments or dyes
Definitions
- the present invention particularly relates to an inkjet ink suitable for printing on a hydrophobic medium such as an offset coat medium, and a printing method on a hydrophobic medium using the ink.
- Patent Document 1 Japanese Patent Application Laid-Open No. 2003-206426 (Claims, columns 0009 to 0010)
- Patent Document 2 Japanese Patent Publication No. 2004-510028 (Claims, column 0012)
- Patent Document 3 Japanese Patent Laid-Open No. 2003-268279 (Claims, column 0009) DISCLOSURE OF THE INVENTION
- the aprotic polar solvent described in Patent Document 3 has good penetrability with respect to a coating usually used for an offset coating medium, so that the inkjet ink is repelled on the surface of the coating.
- a coating usually used for an offset coating medium so that the inkjet ink is repelled on the surface of the coating.
- the aprotic polar solvent is contained, the effect is still insufficient and further improvement is desired.
- An object of the present invention is to provide a water-based inkjet ink capable of performing printing on a hydrophobic medium such as an offset coating medium even better than the current state, and printing on a hydrophobic medium using the same. And to provide a method.
- the inkjet ink of the present invention includes a pigment, water, a surfactant, and an aprotic polar solvent having a molecular weight of 40 to 130, and the content ratio of the aprotic polar solvent is 40 to 75 weight. %.
- the boiling point of the aprotic polar solvent is preferably 150 to 250 ° C.
- polar polar solvents include 1,3-dimethyl-2-imidazolidinone, N-methyl-2-pyrrolidone, 2-pyrrolidone, formamide, N-methylformamide, N, N dimethylformamide, N, N jetylpropionamide , And at least one selected from the group consisting of ⁇ -buty mouth ratatones.
- the surfactant a surfactant having a dynamic contact angular force of 20 ° or less at 23 ° C. is preferably used.
- R 1 represents a polyalkylene oxide chain containing at least one ethylene oxide group or propylene oxide group, and X represents a number of 1 or more.
- R 2 represents a polyalkylene oxide chain containing at least one ethylene oxide group or propylene oxide group, and y represents a number of 1 or more.
- the amount ratio is preferably P / (S 5Zl to 70Zl).
- m represents a number of 1 or more.
- the pigment surface is preferably modified with carboxyl groups.
- the printing method of the present invention includes a step of printing on a hydrophobic medium using the inkjet ink of the present invention, and a step of heating the hydrophobic medium after printing. is there.
- the aprotic polar solvent is contained in an amount of 5 to 40% by weight based on the total amount of the ink-jet ink. Within this range, the aprotic polar solvent is included to improve the permeability to hydrophobic surfaces, such as the coating of offset coating media, and improve the drying characteristics of printing. The effect to do is not obtained enough.
- a small solvent having a molecular weight of 130 or less is selectively used, and the content ratio thereof is Since it is limited to 40% by weight or more, the increase in the viscosity of the ink-jet ink is suppressed, while maintaining good ejection stability, the permeability to the hydrophobic surface is improved, and the drying property of the printing is improved. It can be improved than before. Therefore, according to the ink-jet ink of the present invention, it is possible to perform better printing on a hydrophobic medium such as an offset coat medium than the current situation.
- the molecular weight of the aprotic polar solvent is limited to 40 or more when the low molecular weight aprotic polar solvent having a molecular weight of less than 40 is used. This is because it becomes easier to dry and clogging with the fine nozzles or the like is likely to occur.
- the content ratio of the aprotic polar solvent is limited to 75% by weight or less. When the content ratio exceeds 75% by weight, the molecular weight of the aprotic polar solvent is limited to 130% or less. This is because, as the viscosity of the ink-jet ink increases, the ejection stability when ejected from fine nozzles decreases.
- the boiling point of the aprotic polar solvent is preferably 150 to 250 ° C. If the boiling point of the aprotic polar solvent is less than 150 ° C, the ink-jet ink is likely to be dried and clogged with a nozzle or the like. There is a risk that the ink will dry out and dryness after printing may be reduced. On the other hand, when the boiling point of the aprotic polar solvent is set to 150 to 250 ° C., these problems are prevented from occurring, and even better printing is performed on the hydrophobic medium. can do.
- Suitable aprotic polar solvents satisfying these conditions include 1,3 dimethyl-2 imidazolidinone, N-methyl-2-pyrrolidone, 2-pyrrolidone, formamide, N-methylformamide, N, N dimethyl. And at least one selected from the group consisting of formamide, N, N jetylpropionamide, and ⁇ -petit-mouth rataton force.
- these aprotic polar solvents are used, the various effects described above can be obtained and the details are not clear, but the dispersion stability of the pigment in the inkjet ink is improved. I'll do it.
- a surfactant having a dynamic contact angle at 23 ° C of 20 ° or less is preferably used. If a surfactant with a dynamic contact angle of more than 20 ° at 23 ° C is used, the inkjet ink will be heated without being able to sufficiently wet the hydrophobic surface. , Sharp edges and sharp prints may not be obtained.
- a surfactant having a dynamic contact angle of 20 ° or less at 23 ° C As a surfactant having a dynamic contact angle of 20 ° or less at 23 ° C, the surface tension of the ink-jet ink is reduced and the wettability of the ink-jet ink to the hydrophobic surface is improved.
- a silicone surfactant that does not affect the environment as compared with a PFOS (perfluorooctane sul fonate) surfactant that is excellent in effect and excellent in the same effect is preferably used.
- the silicone surfactant is less than this range, the silicone surfactant is excellent in compatibility with the aprotic polar solvent.
- the function as an activator may be buried, and the effect of improving the wettability of inkjet ink to hydrophobic surfaces may be insufficient
- the amount of the silicone surfactant is larger than this range, the wetness of the inkjet ink to the hydrophobic surface becomes too good, and the ink jet ink is oozed before heating, On the other hand, there is a possibility that a sharp and sharp print cannot be obtained. In addition, a part of the excess silicone surfactant is liberated and hydrolyzed to form a water-insoluble silicone monomer, which is phase-separated from the inkjet ink, resulting in a decrease in inkjet ink uniformity. Further, there is a possibility that the discharge stability when discharging from the fine nozzles is lowered.
- the silicone-based surfactant S represented by the formula (1) and the formula (2)
- a surfactant for example, a 60 ° gloss measured from a BYK-Gardner micro-TRI-gross with a 60 ° glossiness of 70 ° or more, a 60 ° To matte offset coated media with a gloss level of 20 ° or less, Good printing can be performed more stably and stably on a wide range of hydrophobic media having various surface states.
- These two types of silicone surfactants like the previous ones, also have the advantage that they do not affect the environment compared to PFOS surfactants.
- the silicone-based surfactant S of the formula (1) is hydrophobic in an offset coating medium or the like.
- the silicone-based surfactant S of the formula (1) has a lower wettability than that of the formula (2
- Bleeding can be prevented and good printing can be performed even on the matte offset coating medium.
- the silicone surfactant S has the effect of suppressing the wettability of inkjet ink.
- Insufficient ink may cause bleeding, especially when printed on matte offset coating media.
- a fluorosurfactant represented by the formula (3) is also preferably used.
- the fluorosurfactant represented by the formula (3) When the fluorosurfactant represented by the formula (3) is used, the 60 ° glossiness is 20 ° or less from the dalos-type offset coating medium having a 60 ° glossiness of 70 ° or more as described above. Even with such a matte-type offset coating medium, a wide range of hydrophobic media having various surface states can be printed more stably and satisfactorily.
- the fluorosurfactant represented by formula (3) has the advantage that it has no risk of affecting the environment compared to PFOS surfactants. There is also.
- the blending ratio (weight ratio) of the aprotic polar solvent ⁇ and the fluorosurfactant F is P / F
- LOOZ1 45Zl ⁇ : LOOZ1 is preferable.
- the amount of the fluorosurfactant is less than this range, the effect of improving the wettability of the inkjet ink by the fluorosurfactant becomes insufficient. In addition, there is a risk of being easily repelled.
- the surface of the pigment contained in the inkjet ink is preferably modified with a carboxyl group. Thereby, moderate hydrophilicity can be imparted to the pigment, and the dispersion stability in the ink jet ink can be improved.
- the inkjet ink of the present invention includes a pigment, water, a surfactant, and an aprotic polar solvent having a molecular weight of 40 to 130, and the content of the aprotic polar solvent is 40 to 75% by weight. It is characterized by this.
- the aprotic polar solvent those having a molecular weight of 0 to 130 are selected and used from various aprotic polar solvents that do not generate or receive hydrogen ions.
- the content is limited to 40 to 75% by weight with respect to the total amount of inkjet ink. These reasons are as described above.
- the aprotic polar solvent as described above, those having a boiling point of 150 to 250 ° C. are preferably used.
- the molecular weight of the aprotic polar solvent is 45 to L15, especially within the above range, in consideration of suppressing the increase in viscosity of the inkjet ink and further improving its ejection stability. Is preferred.
- the content ratio of the aprotic polar solvent is 45 to 70% by weight, even within the above range, in consideration of further suppressing the increase in the viscosity of the ink jet ink and further improving the discharge stability. Is preferred.
- Suitable aprotic polar solvents satisfying these conditions include, for example, 1,3-dimethyl-2-imidazolidinone [molecular weight: 114.2, boiling point: 225.5 ° C], N —Methyl—2-piprididone [molecular weight: 99.1, boiling point: 202 ° C.], 2-pyrrolidone [molecular weight: 85.1, boiling point: 245 ° C.], formamide [molecular weight: 45.0, boiling point: 210 ° C], N-methylformamide [Molecular weight: 59.1, Boiling point: 197 ° C], N, N-Dimethylformamide [Molecular weight: 73.1, Boiling point: 153 ° C], N, N-Jetylpropionamide And at least one selected from the group consisting of [molecular weight: 129.2, boiling point: 195 ° C], and ⁇ -butyrolatatane [molecular weight: 86.1, boiling point: 204 ° C].
- the surfactant among various conventionally known surfactants, dynamic contact at 23 ° C is possible.
- a surfactant having an antennae of 23 ° or less is preferred.
- a silicone-based surfactant is preferable.
- the lower limit value of the dynamic contact angle is not particularly limited, but when the dynamic contact angle of the surfactant is too small, the wettability of the inkjet ink to the hydrophobic surface is good. In other words, the ink-jet ink may bleed before heating, and on the contrary, there is a risk that the edge is sharp and clear printing cannot be obtained. Therefore, the dynamic contact angle at 23 ° C is preferably 15 ° or more.
- the dynamic contact angle is determined by using, for example, an automatic contact angle meter CA-V manufactured by Kyowa Interface Science Co., Ltd. 0.1% aqueous solution of a surfactant to be measured in an environment of 23 ° C. Is the angle between the droplet and the substrate surface measured 300 ms after the droplet contacted the substrate surface when dropped onto the surface of the stainless steel SUS304 substrate.
- Suitable surfactants that satisfy these conditions include Orphin (registered trademark) PD-501 manufactured by Nissin Chemical Industry Co., Ltd.
- R 1 represents a polyalkylene oxide chain containing at least one ethylene oxide group or propylene oxide group, and X represents a number of 1 or more.
- R 2 represents a polyalkylene oxide chain containing at least one ethylene oxide group or propylene oxide group, and y represents a number of 1 or more.
- a combination system with a silicone surfactant S represented by
- Zl to 70Zl are preferred. These reasons are as described above.
- silicone-based surfactant represented by the formula (1) examples include SILWET L-77 manufactured by Toray 'Dauco Silicone Co., Ltd., and KF- 643 manufactured by Shin-Etsu Silicone Co., Ltd. Etc. Further, as a suitable example of the silicone-based surfactant represented by the formula (2), SILWET L-720 manufactured by Toray Dow Cowing Silicone Co., Ltd. and the like can be mentioned.
- the silicone-based surfactant represented by the formula (1) may change with time, and the wettability of the inkjet ink, particularly the daros-like offset coating medium, may be reduced.
- ⁇ is less than 7.3, a binder that is essentially insoluble in water and selectively soluble in an alkaline aqueous solution in which a basic substance is dissolved in order to improve the water resistance of printing.
- the binder resin may not be able to be dissolved well in the ink-jet ink.
- any basic substance should be added! ⁇ .
- a fluorine-based surfactant represented by the formula is also preferably used. The reason for this is also as explained above.
- Preferable examples of the fluorosurfactant represented by the formula (3) include SUFLON (registered trademark) S-111N manufactured by Seimi Chemical Co., Ltd.
- the concentration of the above compound as an active ingredient is 30% by weight.
- any inorganic pigments and Z or organic pigments usually used for inkjet inks can be used.
- the inorganic pigment for example, a metal compound such as titanium oxide or iron oxide, or carbon black produced by a known method such as a contact method, a furnace method, a thermal method, or the like is used. More than species.
- organic pigments include azo pigments (including azo lakes, insoluble azo pigments, condensed azo pigments, and chelate azo pigments), and polycyclic pigments (for example, phthalocyanine pigments, berylene pigments, berylones). Pigments, anthraquinone pigments, quinacridone pigments, dioxazine pigments, thioindigo pigments, isoindolinone pigments or quinophthalone pigments), dye chelates (eg basic dye-type chelates, acid dye-type chelates), nitro pigments, nitroso pigments 1 type or 2 types or more such as Alin Black.
- azo pigments including azo lakes, insoluble azo pigments, condensed azo pigments, and chelate azo pigments
- polycyclic pigments for example, phthalocyanine pigments, berylene pigments, berylones.
- pigments include CI pigment yellow 74, 109, 110, 138 as yellow pigment, CI pigment red 122, 202, 209 as magenta pigment, CI pigment blue 15: 3, 60, black as cyan pigment CI pigment black 7 as a pigment, CI pigment orange 36, 43 as an orange pigment, CI pigment green 7, 36, etc. as a green pigment.
- One or more pigments can be used depending on the color of the inkjet ink.
- the content ratio of the pigment is preferably 0.1 to 30% by weight with respect to the total amount of the ink-jet ink.
- the hydrophilic group introduced into the surface of the pigment by modification include a carboxyl group and a sulfone group, and a carboxyl group is particularly preferred.
- the dispersion stability in the ink jet ink of the present invention containing a large amount of the aprotic polar solvent as described above may decrease instead.
- a pigment modified with a carboxyl group to impart an appropriate hydrophilic property is particularly excellent in dispersion stability in the ink jet ink of the present invention.
- the pigment is preferably used in the production of ink jet ink in the form of a pigment dispersion dispersed in water using a dispersant.
- the inkjet ink of the present invention may contain an organic acid ethylene oxide adduct and other components described below.
- the ejection stability of the inkjet ink can be improved particularly in a thermal jet (registered trademark) inkjet printer.
- ethylene oxide addition of the organic acid salt is added. This is thought to be due to the fact that the substance works to adsorb on the surface of the pigment and prevents the dispersion stability of the pigment from being destroyed, thereby contributing to the stability of the dispersion.
- the organic acid salt ethylene oxide adduct include sodium salt and potassium of various mono to tricarboxylic acids such as citrate, darconate, tartaric acid, lactic acid, D-malic acid, L-malic acid and the like. Examples thereof include compounds obtained by adding ethylene oxide to an alkali metal salt such as a salt or an ammonium salt.
- an alkali metal salt of citrate such as sodium citrate and potassium citrate and an ethylene oxide carbonate of citrate ammonium. At least one of them is preferred.
- a compound in which n exceeds 28 may increase the viscosity of the ink-jet ink, or may decrease the water-solubility and precipitate in the ink-jet ink, thereby decreasing its ejection stability.
- the content of the above compound is preferably 0.1 to 5.0% by weight, more preferably 0.3 to 3.0% by weight, based on the total amount of the inkjet ink. If the content ratio is less than this range, the effect of improving the ejection stability of the ink jet ink described above due to the inclusion of the compound may be insufficient. If this range is exceeded, there is a risk of clogging with nozzles.
- R 3 represents an alkyl group having 8 to 10 carbon atoms, and r represents a number of 3 to 28. ]
- the function of the ethylene oxide adduct of the organic acid salt is supported.
- the discharge stability of the inkjet ink can be further improved.
- the p power in the formula is preferably 28 to 28.
- the compound in which p is outside this range is an organic acid salt. This is because the effect of assisting the function of the ethylene oxide adduct may be insufficient.
- a compound having p greater than 28 may increase the viscosity of the ink-jet ink, or may decrease the water-solubility and precipitate in the ink-jet ink, thereby reducing its discharge stability.
- r in the formula is 3 to 28, and the alkyl group of R 3 has 8 to 10 carbon atoms. Preference is given to compounds in which r is outside this range, or compounds in which the carbon number of the R 3 alkyl group is outside this range! This is because there is a risk that this will become insufficient.
- compounds in which r is greater than 28, or compounds in which the alkyl group of R 3 has more than 10 carbon atoms increase the viscosity of the inkjet ink, or decrease in water solubility and precipitate in the inkjet ink. In addition, the discharge stability may be reduced.
- polyoxyethylene alkylphenol ether of the formula (6) include those in which r is 25 and the alkyl group of R 3 has 8 carbon atoms, the formula (6-1):
- the content ratio of the polyoxyethylene phenyl ether of the formula (5) and the polyoxyethylene alkyl ether of Z or the formula (6) is 0.1 to 7.0% by weight with respect to the total amount of the ink-jet ink. It is more preferable that it is 0.5 to 6.0% by weight.
- the content ratio is less than this range, the auxiliary effect for assisting the effect of stabilizing the ejection of the ink jet ink due to the inclusion of these compounds may be insufficient. If this range is exceeded, clogging may occur in the head.
- the above-mentioned content ratio is the content ratio when the compound of formula (5) (6) is used alone, or the combination ratio when two or more compounds are used in combination. It is the total content ratio of the compounds to be processed. Since it is considered that the compounds of the formulas (5) and (6) have different auxiliary effect mechanisms, it is preferable to use both in combination. In particular, the combined use of the compound of the formula (5-1) and the compound of the formula (6-1) is preferable in terms of the auxiliary effect.
- the inkjet ink contains acetylene glycols and Z or glycol ethers
- these compounds can be converted to polyoxyethylene ethers of formula (2) and polyoxyethylene alkyl ethers of formula Z (3). Since it has a complementary effect that complements the auxiliary effect, it is possible to further improve the ejection stability of the ink jet ink.
- acetylene glycols include Surfynol (registered trademark) 104 manufactured by Air Products and its series products, Surfynol 420, 440, 465, 485, Dainol 604, Nisshin Igaku Kogyo. 1 type or 2 or more types of Orphine E4001, 4036, 4051 etc. made by Corporation
- the content of acetylene glycols is preferably 0.01 to 5.0% by weight, more preferably 0.05 to 3.0% by weight, based on the total amount of the inkjet ink. If the content ratio is less than this range, the complementary effect described above due to the inclusion of a strong compound. May become insufficient. If this range is exceeded, the water resistance of printing may be reduced.
- s and t each independently represent a number of 0 to 40. However, s and t are 0 at the same time. S + t is a number from 1 to 40. ]
- acetylene glycols represented by the formula (7) among various compounds exemplified above, Surfynol 420 manufactured by Air Products Co., Ltd. [a plurality of components having different numbers of s and t in the formula (7) Consisting of a mixture, the average value of s + t is 1.3), 440 (consisting of a mixture of multiple components with different numbers of s and t in formula (7), and the average value of s + t is 3.5), 465 (consisting of a mixture of multiple components with different numbers of s and t in formula (7), the average value of s + t is 10), 485 (multiple components with different numbers of s and t in formula (7)) The average value of s + t is 30].
- glycol ethers for example, ethylene glycol monobutyl ether, diethylene glycol monobutyl ether, triethyleneglycol monobutynole ether, ethylene glycol monomonobutynole ether, diethylene glycol monomono ether Chinoleatenore, ethylene glycolenohexenoleatenore, diethyleneglycolenolemonohexenoleatenore-ethyleneglycolenolemono 2-ethinolehexenoleatenore, jetty
- One type or two or more types such as lenglycol mono-2-ethylhexyl ether may be mentioned.
- the content ratio of glycol ethers is preferably 0.5 to 10.0% by weight, more preferably 2.0 to 7.0% by weight, based on the total amount of the ink-jet ink. If the content ratio is less than this range, the above-described complementary effect due to the inclusion of a strong compound may be insufficient. In addition, when it exceeds this range, since the compound is a non-volatile liquid, there is a possibility that the inkjet ink will dry out. In addition, the storage stability of the ink jet ink may be reduced.
- the binder resin When a binder resin is included in the inkjet ink, the binder resin functions as a binder between a hydrophobic surface and a pigment, such as coating of an offset coating medium. Sharpness and the like can be improved.
- the use of binder resin which is essentially insoluble in water and selectively soluble in an alkaline aqueous solution in which a basic substance is dissolved, further improves the water resistance of printing. It can be done.
- the alkali-soluble binder resin for example, it has a carboxyl group in the molecule and is insoluble in water as it is, dissolves basic substances such as ammonia, organic amines, and caustic alkalis.
- a cocoa resin in which the carboxyl group part reacts with a basic substance to form a water-soluble salt and dissolves is preferable.
- Preferable examples thereof include polyacrylic acid, acrylic acid monoacrylonitrile copolymer, potassium acrylate-acrylonitrile copolymer, butyl acetate acrylate copolymer, acrylic acid acrylate alkyl ester copolymer
- Acrylic resin such as styrene; styrene acrylic acid copolymer, styrene-methacrylic acid copolymer, styrene-methacrylic acid acrylic acid alkyl ester copolymer, styrene OC-methylstyrene acrylic acid copolymer, styrene OC-methylstyrene acrylic acid acrylic acid Styrene acrylic acid resin such as alkyl ester copolymer; maleic acid resin, fumaric acid resin, styrene maleic acid copolymer resin, styrene maleic anhydride copolymer resin, etc. So that the molecular weight, acid value, etc. are adjusted,
- alkali-soluble acrylic resin examples include, for example, Neoacryl (registered trademark) B-817 (weight average molecular weight Mw: 23,000) manufactured by Abashiya Co., Ltd. And otaryl B-890 (weight average molecular weight Mw: 12, 500), John Krill (registered trademark) 67 (weight average molecular weight Mw: 12, 500) manufactured by Johnson Polymer Co., Ltd.
- the alkali-soluble binder resin preferably has a weight average molecular weight Mw of 10,000 or more in consideration of improving the water resistance and scratch resistance of printing.
- Mw weight average molecular weight
- the binder resin is liable to precipitate and precipitate, and the ink jet ink ejection may become unstable.
- the weight average molecular weight Mw of the binder resin is preferably about 20,000 to 40,000 in consideration of these characteristics, especially within the above range. Is more preferable.
- the content ratio of Noinda rosin is preferably 0.1 to 3.0% by weight, more preferably 0.5 to 2.0% by weight, based on the total amount of the inkjet ink. If the content is less than this range, the effect of improving the water resistance, scratch resistance and print sharpness of printing by fixing the pigment on a non-aqueous surface or the like may be insufficient. In addition, when exceeding this range, in particular, as described above, in the thermal jet method, when the viscosity of the ink jet ink locally increases in the printer head as the water vaporizes, the ink ejection May become unstable, or excessive binder resin may precipitate and cause clogging in the head.
- Inkjet printers are normally set to perform manual operations to return the head to the home position when the head is returned to the home position when not in use, with a mechanism that caps and closes the nozzle.
- the inkjet ink in the nozzle rises in viscosity and resumes printing. In the initial stage, printing defects such as fading tend to occur.
- Ink-jet ink used in printers has a weight average molecular weight Mw of 1,000 to 3,000, particularly 1,000 to 2,000, as binder resin, in order to reliably prevent printing defects such as fading. Is preferably used. In this way, the weight average molecular weight Mw is small! /, And the ink jet ink containing the binder resin does not rapidly increase in viscosity even if left for a while without being capped. In the early stage of restarting, printing defects such as fading will not occur.
- Noinda rosin are preferably the same as those of the above-mentioned large molecular weight! / Binder rosin. That is, the binder resin is essentially insoluble in water and is selectively soluble in an alkaline aqueous solution in which a basic substance is dissolved. This is preferable in terms of improving the water resistance of printing.
- the binder resin satisfying these conditions and having a weight average molecular weight Mw of 1,000 to 3,000 for example, John Crill 682 manufactured by Johnson Polymer Co., Ltd. (weight average molecular weight Mw: l, 700) Etc.
- the content ratio of Noinda rosin is preferably 0.1 to 3.0% by weight, more preferably 0.5 to 2.0% by weight, based on the total amount of the inkjet ink. If the content ratio is less than this range, there is a possibility that printing may not be given water resistance and scratch resistance at a level that does not cause any practical problems, or may not be vividly printed. If this range is exceeded, there is a risk of printing fading or nozzle clogging.
- the basic substance makes the inkjet ink alkaline, dissolves the binder resin as described above, prevents corrosion of the head, and maintains pigment dispersion stability.
- used for As the strong basic substance ammonia, organic amine, caustic alkali and the like are preferable as described above.
- organic amine for example, monoethanolamine, diethanolamine, triethanolamine, ethylmonoethanolamine, ethyljetanolamine, monoisopropanolamine, diisopropanolamine, triisopropanol 1 type or 2 types or more of amin, mono-1-propanolamine, 2-amino 2-methyl 1 propanol, and these derivatives.
- the addition amount of the basic substance is appropriately determined according to the acid value indicating the free fatty acid content of the binder resin, or the pH of the inkjet ink without adding the basic substance. In general, it is preferably 0.05 to 2 parts by weight, more preferably 0.075 to 1.5 parts by weight, per 1 part by weight of the noda resin. If the addition amount is less than this range, the binder resin cannot be sufficiently dissolved, and there is a possibility that a uniform inkjet ink cannot be obtained. If this range is exceeded, the pH of the ink may become too high, which may cause safety problems and corrode the inkjet printer head.
- additives for ink may be added in addition to the above components.
- additives include pigment dispersants, fungicides, and biocides.
- the produced ink composition can be used in a so-called on-demand type ink jet printer such as the thermal jet method and the piezo method described above, and forms ink droplets while circulating the ink. It can also be used for V, so-called continuous ink jet printers that perform printing.
- the printing method of the present invention includes a step of printing on a hydrophobic medium using the inkjet ink of the present invention by the inkjet printing method, and a step of heating the hydrophobic medium after printing. Is.
- the thermal jet method the piezo method, etc.
- a so-called on-demand type ink jet printer or a continuous-type ink jet printer printing can be performed under normal conditions.
- a heater may be arranged continuously with the outlet of the substrate of the inkjet printer so that heating can be performed at a predetermined temperature for a predetermined time.
- the conditions such as the heating temperature and the heating time are not particularly limited. However, setting the heating time to 10 seconds or less, preferably about 1 to 5 seconds is effective in order not to prolong the time required for printing. is there.
- a carbon black dispersion (CABOJET 300, manufactured by CABOT, carboxyl group-modified, aqueous dispersion, solid content of 15% by weight) is used, and 1,3 dimethyl-type is used as the aprotic polar solvent.
- 2-Imidazolidinone (molecular weight: 114.2, boiling point: 225.5 ° C.) was used.
- a silicone-based surfactant (Orphine PD-501 manufactured by Nissin Chemical Industry Co., Ltd., dynamic contact angle at 23 ° C: 16.) was used, and as an ethylenoxide adduct of organic acid, In addition, an ethylene oxide adduct of sodium citrate in which p in the above formula (4) is 6 and Mi to M 3 are all sodium was used.
- alkali-soluble acrylic resin Naoacryl B-817 manufactured by Avicia Co., Ltd., weight average molecular weight Mw: 23,000
- 2-amino-2-methyl 1 propanol was used as a basic substance.
- a compound represented by the above formula (5-1) is used as the polyoxyethylene phenyl ether
- a compound represented by the above formula (6-1) is used as the polyoxyethylene furol ether. It was.
- Orphine E4001 manufactured by Nissin Chemical Industry Co., Ltd. was used as the acetylene glycol
- Proxel (registered trademark) X L 2 manufactured by Zeneca was used as the biocide.
- N-methyl-2-pyrrolidone molecular weight: 99.1, boiling point: 202 ° C.
- 2 pyrrolidone molecular weight: 85.1, Boiling point: 245 ° C] (Example 3)
- Formamide molecular weight: 45.0, Boiling point: 210 ° C] (Example 4)
- N-methylformamide molecular weight: 59.1, Boiling point: 197 ° C] (Example 5
- N, N-dimethylformamide mo weight: 73.1, Boiling point: 153 ° C] (Example 6)
- N, N—Jetylpropionamide Molecular weight: 129.
- Example 7 boiling point: 195 ° C] (Example 7), and Example 1 except that ⁇ -petit latatotone [molecular weight: 86.1, boiling point: 204 ° C] (Example 8) was used. In the same manner, an inkjet ink was produced.
- an ink jet ink was produced in the same manner as in Example 1 except that the amount of ion-exchanged water was 38.4 parts by weight.
- Example 1 except that the same amount of silicone surfactant having a dynamic contact angle of 19.8 ° at 23 ° C was used instead of Orphin PD-501 as the silicone surfactant. In the same manner as in Example 1, an ink jet ink was produced.
- Example 1 except that the same amount of silicone surfactant having a dynamic contact angle of 24.3 ° at 23 ° C was used instead of Orphin PD-501 as the silicone surfactant. In the same manner as in Example 1, an ink jet ink was produced.
- Example 16 The amount of 1,3 dimethyl-2 imidazolidinone as the aprotic polar solvent is 49.5 parts by weight and the amount of the silicone surfactant is 1.1 parts by weight.
- an inkjet ink was produced in the same manner as in Example 1 except that the amount of ion-exchanged water was 18.5 parts by weight.
- An inkjet ink was produced in the same manner as in Example 1 except that the amount of ion-exchanged water was 29.9 parts by weight.
- the ratio of 1,3 dimethyl-2 imidazolidinone as aprotic polar solvent is 52.5 parts by weight and the amount of silicone surfactant is 0.7 parts by weight.
- an inkjet ink was produced in the same manner as in Example 1 except that the amount of ion-exchanged water was 25.9 parts by weight.
- CABOJET200 manufactured by Cabot, sulfone group modified, aqueous dispersion, solid content 15% by weight
- CABOJET300 was used instead of CABOJET300.
- Inkjet ink was manufactured.
- Example 2 An inkjet ink was produced in the same manner as in Example 1, except that N, N dibutylformamide (molecular weight: 157.3, boiling point: 240 ° C.) was used as the aprotic polar solvent. [0110] The following tests were conducted on the ink-jet inks produced in the above Examples and Comparative Examples, and the characteristics thereof were evaluated.
- the ink jet inks of Examples and Comparative Examples were used as thermal black ink jet printers (Desk Jet 970Cxi manufactured by Hewlett-Packard Co., Ltd.), empty black ink cartridges (Part No. 51645A manufactured by Hewlett-Packard Co., Ltd.). ], And a line with a line width of 0.5 points was printed on commercially available paper. The printing was observed and the stability of ink jet ink ejection was evaluated according to the following criteria.
- the ink jet inks of Examples and Comparative Examples were used in the same thermal jet type ink jet printer (Desk Jet 970Cxi manufactured by Hewlett-Packard Co., Ltd.) as an offset coating medium (packaging material for the above ink cartridge). ) And then heated using an oven toaster at 500 W output for 2 seconds, then the print was rubbed with a cotton swab under a 20 g load. The printing was observed, and the drying property of the ink jet ink was evaluated according to the following criteria. When the 60 ° glossiness of the offset coating medium was measured using a micro-TRI-gross manufactured by BYK-Gardner, it was 46.5 °.
- the ink jet inks of Examples and Comparative Examples were used in the same thermal jet type ink jet printer (Desk Jet 970Cxi manufactured by Hewlett-Packard Co., Ltd.) as an offset coating medium (packaging material for the above ink cartridge). ) 10 points on the top The print was printed, then heated using an oven toaster at an output of 500 W for 2 seconds, and then the print was observed to evaluate the print clarity of the inkjet ink according to the following criteria.
- Non-proton molecular weight 1 14. 2 99. 1 85. 1 45. 0 59. 1 73. 1 1 29. 2 Polar solvent P content (wt%) 48. 5 48. 5 48. 5 48. 5 48. 5 48. 5 48. 5 48. 5 Surfactant s dynamic contact angle 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 6. 1 ° 1 °
- the aprotic polar solvent As the aprotic polar solvent, the molecular weight From the results of Examples 1 and 9 to 11 and Comparative Examples 1 and 2, the content of the aprotic polar solvent needs to be 40 to 75% by weight. I found that there was. Further, from the results of Examples 1, 12, and 13, it is preferable that the surfactant has a dynamic contact angle at 23 ° C of 20 ° or less, and from the results of Examples 1 and 14 to 17 Properties
- the pigment used is a carbon black dispersion (CABOJET300 manufactured by Cabot, carboxy group-modified, aqueous dispersion, solid content 15% by weight), and 1,3 dimethyl-2-imidazolidinone as the aprotic polar solvent. [Molecular weight: 114.2, Boiling point: 225.5 ° C] was used.
- the surfactant include SILWET L-77 manufactured by Toray Dow Cowing Silicone Co., Ltd. as a silicone-based surfactant represented by the above formula (1), and a silico represented by the above formula (2).
- SILWET L-720 manufactured by Toray Dow Chemical Co., Ltd. was used as an organic surfactant.
- an ethylene oxide adduct of an organic acid an ethylene oxide adduct of sodium citrate in which p in the above formula (4) is 6 and Mi to M 3 are all sodium was used.
- binder resin alkali-soluble acrylic resin (Neoacryl B-817 manufactured by Abyssia Co., Ltd., weight average molecular weight Mw: 23, 000) was used.
- 2-amino-2-methyl-1-propanol was used.
- the polyoxyethylene phenyl ether the compound represented by the above formula (5-1) was used, and as the polyoxyethylene alkyl ether, the compound represented by the above formula (6-1) was used.
- acetylene glycols Surfynol 420 manufactured by Air Products Co., Ltd. (consisting of a mixture of multiple components with different numbers of s and t in formula (7), with an average value of s + t of 1.3) was used.
- Proxel XL-2 manufactured by Zeneca was used as a biocide.
- the mixing ratio (weight ratio) between the polar polar solvent P and the silicone surfactants S and S is P / (S
- the total amount of S and S is 1 part by weight, and the aprotic polar solvent P and silicone
- An inkjet ink was produced in the same manner as Example 19 except for the above.
- the pH of the inkjet ink of the example was measured using HM-40V manufactured by Toa Denpa Kogyo Co., Ltd.
- the pigment used is a carbon black dispersion (CABOJET300 manufactured by Cabot, carboxy group-modified, aqueous dispersion, solid content 15% by weight), and 1,3 dimethyl-2-imidazolidinone as the aprotic polar solvent. [Molecular weight: 114.2, Boiling point: 225.5 ° C] was used.
- As the surfactant Surflon S-111N manufactured by Seimichemical Co., Ltd. was used as the fluorine-based surfactant represented by the above formula (3).
- an ethylene oxide adduct of an organic acid an ethylene oxide adduct of sodium citrate in which p in the above formula (4) is 6 and Mi to M 3 are all sodium was used.
- binder resin alkali-soluble acrylic resin (Neoacryl B-817 manufactured by Abyssia Co., Ltd., weight average molecular weight Mw: 23, 000) was used.
- 2-amino-2-methyl-1-propanol was used.
- the polyoxyethylene phenyl ether the compound represented by the above formula (5-1) was used, and as the polyoxyethylene alkyl ether, the compound represented by the above formula (6-1) was used.
- acetylene glycols Surfynol 420 manufactured by Air Products Co., Ltd. (consisting of a mixture of multiple components with different numbers of s and t in formula (7), with an average value of s + t of 1.3) was used.
- Proxel XL-2 manufactured by Zeneca was used as a biocide.
- An ink-jet ink was produced in the same manner as in Example 1 except that the amount of ion-exchanged water was 29.0 parts by weight with Zl.
- An inkjet ink was produced in the same manner as in Example 1 except that 8Z1 was used and the amount of ion-exchanged water was 29.2 parts by weight.
- An inkjet ink was produced in the same manner as in Example 1 except that Zl and the amount of ion-exchanged water were 27.2 parts by weight.
- An ink-jet ink was produced in the same manner as in Example 1, except that the amount of ion-exchanged water was 26.9 parts by weight.
- Example 29 An inkjet ink was produced in the same manner as in Example 24 except that the same amount of John Crill 682 (weight average molecular weight Mw: 1, 700) manufactured by Johnson Polymer Co., Ltd. was used as Noinda resin.
- An ink jet ink was produced in the same manner as in Example 24 except that the same amount of John Crill 586 (weight average molecular weight Mw: 4,600) manufactured by Johnson Polymer Co., Ltd. was used as Noinda resin.
- the ink jet inks of the examples and comparative examples were used for the thermal jet type inkjet printer (Desk Jet 6127 manufactured by Hewlett-Packard Co., Ltd.), an empty, black ink force cartridge manufactured by Hewlett-Packard Co., Ltd. 51645A] was printed. Next, the head was not returned to the home position and the nozzle was not capped, and was left for 5 minutes. Then, 1 cm X lcm solid printing was performed on commercially available glossy paper. The printing was observed, and the ejection stability of the inkjet ink was evaluated according to the following criteria.
- the ink jet ink used in the ink jet printer that manually returns the head to the home position is used to reliably prevent printing defects such as fading. It has been found that it is preferable to use a binder resin having a weight average molecular weight Mw of 1,000 to 3,000.
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inks, Pencil-Leads, Or Crayons (AREA)
- Ink Jet Recording Methods And Recording Media Thereof (AREA)
- Ink Jet (AREA)
Abstract
Description
Claims
Priority Applications (9)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2005258471A AU2005258471B2 (en) | 2004-07-01 | 2005-06-30 | Inkjet ink and printing method using same |
KR1020067027898A KR100920406B1 (ko) | 2004-07-01 | 2005-06-30 | 잉크젯 잉크와 그것을 사용하는 인쇄방법 |
CN200580021980A CN100595241C (zh) | 2004-07-01 | 2005-06-30 | 喷墨墨水及使用它的印刷方法 |
JP2006528820A JP4843805B2 (ja) | 2004-07-01 | 2005-06-30 | インクジェットインクとそれを用いる印刷方法 |
EP20050765280 EP1775326B1 (en) | 2004-07-01 | 2005-06-30 | Inkjet ink and printing method using same |
US11/631,346 US7922315B2 (en) | 2004-07-01 | 2005-06-30 | Inkjet ink and printing method using the same |
CA 2572403 CA2572403C (en) | 2004-07-01 | 2005-06-30 | Inkjet ink and printing method using the same |
HK07113182A HK1104834A1 (en) | 2004-07-01 | 2007-12-03 | Inkjet ink and printing method using same |
US12/654,773 US7988278B2 (en) | 2004-07-01 | 2009-12-31 | Inkjet ink and printing method using the same |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2004195934 | 2004-07-01 | ||
JP2004-195934 | 2004-07-01 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/654,773 Division US7988278B2 (en) | 2004-07-01 | 2009-12-31 | Inkjet ink and printing method using the same |
Publications (1)
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WO2006004006A1 true WO2006004006A1 (ja) | 2006-01-12 |
Family
ID=35782813
Family Applications (1)
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PCT/JP2005/012106 WO2006004006A1 (ja) | 2004-07-01 | 2005-06-30 | インクジェットインクとそれを用いる印刷方法 |
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Country | Link |
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US (3) | US7922315B2 (ja) |
EP (1) | EP1775326B1 (ja) |
JP (1) | JP4843805B2 (ja) |
KR (1) | KR100920406B1 (ja) |
CN (3) | CN101684217B (ja) |
AU (1) | AU2005258471B2 (ja) |
CA (1) | CA2572403C (ja) |
HK (2) | HK1104834A1 (ja) |
WO (1) | WO2006004006A1 (ja) |
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JP2006282823A (ja) * | 2005-03-31 | 2006-10-19 | Seiko Epson Corp | プラスチックフィルム用インク組成物およびそれを用いたインクジェット記録方法 |
JP2007211081A (ja) * | 2006-02-08 | 2007-08-23 | Konica Minolta Holdings Inc | インクジェットインク及びインクジェット記録方法 |
JP2007238813A (ja) * | 2006-03-09 | 2007-09-20 | General Technology Kk | インクジェットインクとそれを用いた疎水性媒体への印刷方法 |
JP2008274037A (ja) * | 2007-04-26 | 2008-11-13 | General Technology Kk | インクジェットインク |
JP2010168433A (ja) * | 2009-01-21 | 2010-08-05 | Toyo Ink Mfg Co Ltd | β−アルコキシプロピオンアミド類を使用した水性インキ組成物 |
JP2011231294A (ja) * | 2010-04-30 | 2011-11-17 | General Co Ltd | インクジェットインク |
JP2012052112A (ja) * | 2011-08-29 | 2012-03-15 | Seiko Epson Corp | プラスチックフィルム用インク組成物およびそれを用いたインクジェット記録方法 |
JP2014198829A (ja) * | 2013-03-13 | 2014-10-23 | 株式会社リコー | インクジェット用インク、該インクを用いたインクカートリッジ、インクジェット記録装置、及び、インク記録物 |
US9079418B2 (en) | 2005-03-31 | 2015-07-14 | Seiko Epson Corporation | Treatment liquid for plastic film, primer liquid for printing, ink composition, and method for ink jet recording using them |
JP2015151480A (ja) * | 2014-02-17 | 2015-08-24 | 日信化学工業株式会社 | 水溶性界面活性剤組成物及びそれを配合したインク組成物 |
JP2017101125A (ja) * | 2015-11-30 | 2017-06-08 | 株式会社リコー | インク、及びインクジェット記録方法 |
JP2021041672A (ja) * | 2019-09-13 | 2021-03-18 | 株式会社リコー | インクセット、印刷物、印刷方法、及び印刷装置 |
JP7175410B1 (ja) | 2021-06-09 | 2022-11-18 | 株式会社Dnpファインケミカル | インク組成物、インクセット、記録物、記録方法、及び記録物の製造方法 |
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US8216673B2 (en) * | 2005-08-03 | 2012-07-10 | Nissin Chemical Industry Co., Ltd. | Glass fiber-treating agent and glass fiber-treating composition |
TWI464219B (zh) * | 2007-10-17 | 2014-12-11 | Toyo Ink Mfg Co | 噴墨用印墨 |
US8142558B2 (en) * | 2008-03-31 | 2012-03-27 | Videojet Technologies Inc. | Thermal ink jet ink composition |
DE102009032615A1 (de) * | 2009-07-10 | 2011-01-20 | J. S. Staedtler Gmbh & Co. Kg | Tinte für Schreib-, Zeichen- und/oder Malgeräte sowie deren Verwendung |
JP2012246460A (ja) * | 2011-05-31 | 2012-12-13 | Seiko Epson Corp | インク組成物およびインクジェット記録方法 |
EP2843010B1 (en) | 2012-04-23 | 2018-12-19 | Seiko Epson Corporation | Ink composition for ink-jet recording, ink supply system, and ink-jet recording device |
JP5878224B2 (ja) * | 2014-04-28 | 2016-03-08 | ゼネラル株式会社 | インクジェットインク |
CN115139678B (zh) * | 2021-03-31 | 2024-01-12 | 株式会社理光 | 印刷方法,印刷装置 |
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JP4843805B2 (ja) | 2011-12-21 |
KR100920406B1 (ko) | 2009-10-07 |
US7988278B2 (en) | 2011-08-02 |
CA2572403A1 (en) | 2006-01-12 |
EP1775326A4 (en) | 2009-04-22 |
CN100595241C (zh) | 2010-03-24 |
US7922315B2 (en) | 2011-04-12 |
KR20070034541A (ko) | 2007-03-28 |
CA2572403C (en) | 2010-09-21 |
US20080043080A1 (en) | 2008-02-21 |
CN101684217B (zh) | 2012-10-24 |
AU2005258471A1 (en) | 2006-01-12 |
AU2005258471B2 (en) | 2010-12-23 |
US20100110122A1 (en) | 2010-05-06 |
CN101684218A (zh) | 2010-03-31 |
HK1104834A1 (en) | 2008-01-25 |
EP1775326A1 (en) | 2007-04-18 |
JPWO2006004006A1 (ja) | 2008-07-31 |
EP1775326B1 (en) | 2015-04-15 |
CN101684217A (zh) | 2010-03-31 |
CN1981003A (zh) | 2007-06-13 |
US20100110121A1 (en) | 2010-05-06 |
HK1138867A1 (en) | 2010-09-03 |
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