WO2005097923A1 - インクジェット記録用インク、インクジェット記録方法、インクカートリッジ、及びインクジェット記録装置 - Google Patents
インクジェット記録用インク、インクジェット記録方法、インクカートリッジ、及びインクジェット記録装置 Download PDFInfo
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- WO2005097923A1 WO2005097923A1 PCT/JP2005/007193 JP2005007193W WO2005097923A1 WO 2005097923 A1 WO2005097923 A1 WO 2005097923A1 JP 2005007193 W JP2005007193 W JP 2005007193W WO 2005097923 A1 WO2005097923 A1 WO 2005097923A1
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- jet recording
- ink jet
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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
- C09D11/32—Inkjet printing inks characterised by colouring agents
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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
- C09D11/32—Inkjet printing inks characterised by colouring agents
- C09D11/328—Inkjet printing inks characterised by colouring agents characterised by dyes
Definitions
- the present invention relates to an ink jet recording ink, an ink jet recording method, an ink cartridge, and an ink jet recording apparatus.
- alkanolamines such as ⁇ ⁇ ⁇ ⁇ ⁇ -hydroxyethylmorpholine and monoethanolamine, diethanolamine and triethanolamine
- ⁇ ⁇ of the ink will be as high as 9 or more, even if the addition amount is small.
- An ink with a high ⁇ ⁇ ⁇ has a problem of ejection stability due to corrosion of a nozzle to be touched by the ink and a problem of safety when a person touches the ink by mistake during handling.
- ⁇ ⁇ is desired to be in the neutral range (roughly ⁇ ⁇ 7) in the case where the ink accidentally gets into the eyes and the degree of freedom in selecting the members that come into contact with the ink.
- these alcohol amines are added to the ink, the bronze phenomenon can be reduced, but the water resistance is reduced. There was a problem of making it. ⁇
- p-toluenesulfonic acid amide ethylene oxide was added to the ink, the bronzing effect was effective, but since the contact angle force S between the ink and the recording medium was reduced, occurrence of feathering and OD (optical (Density) decreased, and the print quality deteriorated significantly.
- the ink has a pH of 8 or more, so it cannot be said to be an ink having a pH in the water-soluble region, and there is a concern that the ink may come into contact with the nozzle (see, for example, JP-A-7-222). See the 8110 publication).
- Ink used in an ink jet recording apparatus such as an ink jet printer is prepared by selecting an optimum one from a number of materials. For example, if we focus only on dyes, there are direct dyes and acid dyes, each with different characteristics. For example, when printed with inks using direct dyes, the formed images are characterized by relatively excellent weather resistance, and when printed with inks using acid dyes, high brightness, It has the feature that a printed matter with saturation can be obtained.
- Ink jet recording inks (1) do not cause clogging at the nozzle tip, (2) record stably even during continuous printing or when printing is resumed after being left for a long time (intermittent ejection stability and recovery from sticking) (3) There is a need for such properties that (3) physical properties do not change even when the ink is stored for a long time.
- urea, urea derivatives, thiourea or thiourea derivatives, etc. are added to the ink as humectants to prevent clogging of the nozzle tip due to evaporation of water That is being done.
- urea or a urea derivative may be added to the ink as a solubilizing agent for the dye in order to improve the solubility of the dye in water or various solvents for the purpose of improving the intermittent ejection stability. (See, for example, Japanese Patent Application Laid-Open No. 2-173131).
- a low-viscosity ink having a viscosity of l to 3 mPa ⁇ s is discharged from a small-diameter nozzle or opening of about 30 to 50 m. That is, since the ink has a sufficiently low viscosity, the ink can be replenished (.refilled) from the ink storage unit at a high speed in response to a decrease in the amount of ink in the nozzle or the opening due to the ejection of the ink. As a result, the meniscus (the interface between ink and air) at the nozzle tip or opening is quickly recovered, so that ejection stability can be obtained even when high-speed printing at a repetitive printing frequency exceeding 10 kHz is performed.
- the viscosity of the ink increases, the flow path resistance increases, and the supply speed of the ink into the nozzles or the openings decreases significantly. Also, in this case, the energy required for ink ejection is significantly increased as the flow path resistance is increased.
- a high-viscosity ink is used in an ink-jet apparatus that normally uses a commercially available water-based ink (viscosity:! To 3 mPa, s)
- the viscosity of the ink is increased from about 1 OmPas to an ink. Supply to the nozzle or opening will not be in time, and meniscus will not be recovered in time.
- the ink is to be ejected in such a state, the ink is ejected from an unstable meniscus position, so that the variation in the ink ejection amount and the ejection direction becomes large, and the image quality deteriorates. Further, if the viscosity of the ink exceeds 2 OmPas, the ink cannot be supplied to the nozzle or opening in time, Injury will occur. Furthermore, if the viscosity of the ink exceeds 1 mPa ⁇ s, even if the ink is supplied to the nozzle or the opening in time, the energy required to eject the ink is insufficient with the conventional pressure generating means. However, the ink discharge becomes unstable or does not discharge at all.
- the nozzle diameter was increased from 50 m to 70 m to reduce the flow path resistance, and high-speed printing was performed using ink with a high viscosity of 10 to 10 OmPas.
- a printer aiming at the above (for example, see Japanese Patent Application Laid-Open No. 9-169111).
- the nozzle diameter is increased by the amount corresponding to the increase in the viscosity of the ink, the ink supply speed becomes slow, and the repetitive printing frequency decreases.
- the diameter of the nozzle is increased, the diameter of the ejected ink droplet is relatively increased, which causes a problem that the resolution and the image quality are reduced. Disclosure of the invention
- a first object of the present invention is to provide an ink jet recording ink that can prevent the bronze phenomenon, is excellent in weather resistance such as gas resistance, and does not corrode or deteriorate members that come into contact with ink such as a recording head or a nozzle. It is to provide.
- a second object of the present invention is to satisfy the first object and to prevent clogging in a nozzle or an opening of an ink jet recording apparatus when used in an ink jet recording method.
- ink droplets are not discharged from the recording head, and the same good intermittent discharge stability and fix recovery as in the conventional ink jet ink containing urea can be obtained.
- it does not cause color change or agglomeration due to the decomposition of dyes, has excellent long-term storage stability and ejection stability, and has the appropriate viscosity to create high-resolution, high-quality printed matter.
- Still another object of the present invention is to provide an ink jet recording method, an ink cartridge, and an ink jet recording apparatus using the ink for ink jet recording.
- the inventors of the present invention have conducted intensive studies in view of the above object, and as a result, the solubility of the copper phthalocyanine-based dye has been improved by including an amine-based additive or the like in the ink and improving the pH.
- the solubility of the copper phthalocyanine-based dye has been improved by including an amine-based additive or the like in the ink and improving the pH.
- the peaks in the absorption spectrum can be changed by changing the type, position and number of substituents. It is known that the position and size change.
- the ratio of these two peak values differs depending on the dye. This difference is caused by differences in the type, position and number of substituents of the copper phthalocyanine dye.
- the ratio of the number of substituents that causes the copper phthalocyanine dye to absorb light in the wavelength range of 650 nm to 68 Onm, the weather resistance of printed matter such as gas resistance, and the bronze phenomenon There is a strong correlation between the expression of In other words, the smaller the number of substituents that absorb light in the wavelength range of 650 nm to 680 nm, the better the weather resistance such as gas resistance, but the more easily the bronze phenomenon occurs. In other words, a pink having a small peak value in the absorption spectrum in the wavelength range of 650 nm to 680 nm is excellent in weather resistance such as gas resistance, but tends to develop a bronze phenomenon.
- the ink jet recording ink according to the present invention is an ink jet recording ink containing at least a copper phthalocyanine dye represented by the following general formula (1), and further comprises a compound represented by the following general formula (2) It is characterized by containing.
- M is an alkali metal or ammonia
- x, y, and z are each independently integers from 0 to 4.
- R 2 are each independently a substituted or unsubstituted alkyl group, aryl group, arylalkyl group, or hydrogen atom
- R 3 and R 5 are each R 4 and R 6 are independently R 3 and R 6, independently of each other
- R 4 and R 6 are a carbonyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphate group or a salt thereof, and an alkyl group substituted with these groups.
- the copper phthalocyanine dye represented by the general formula (1) contained in the ink jet recording ink according to the present invention has an absorption spectrum satisfying the following conditions (1) and (2). Preferably, it is The measurement of the absorption spectrum at this time is performed in accordance with, for example, JISK 0115 “General rules of absorption spectroscopy”.
- the peak of the absorption spectrum has a wavelength of 600 ⁇ ! Up to 640 nm and wavelength 65 ⁇ ! Present in both ⁇ 68 Onm range.
- A is the peak value of the absorption spectrum in the wavelength range of 600 nm to 640 nm
- B is the peak value of the absorption spectrum in the wavelength range of 650 nm to 680 nm.
- the content of the compound represented by the general formula (2) is 0.1% by mass or more based on the total mass of the ink jet recording ink. % Or less; the content of the compound represented by the general formula (1) is 0.5% by mass or more and 5.0% by mass or less based on the total mass of the ink jet recording ink;
- the mass ratio of the content of the compound represented by (1) and the content of the compound represented by the general formula (2) is not less than 15: 1 and not more than 50/1; , 4 to 7.5; 0.1% by mass to 1.0% by mass of an acetylenic oxide adduct of acetylenic alcohol represented by the following general formula (3) based on the total mass of the ink for inkjet recording. 5% by mass; and m and n of the compound represented by the following general formula (3) are 6 + m + n ⁇ l 4 Satisfying the relationship of.
- General formula (3) is 6 + m + n ⁇ l 4 Satisfying the relationship of.
- the invention for the second object provides the following ink for inkjet recording as means for solving the above problems.
- an ink-jet recording ink is the ink-jet recording ink having any one of the above-described structures, further comprising daricerin as the first solvent and the following general formula (4) as the second solvent: At least three of a urea derivative represented by the following general formula (5), and at least one selected from ethylene glycol and 2-pyrrolidone as the third solvent; !
- the sum of the contents of the three solvents is 18% by mass or more and 27% by mass or less based on the total mass of the ink for inkjet recording, and the content of the first solvent and The total content of the second solvent is not less than 12% by mass and not more than 20% by mass, and the mass ratio of the content of the first solvent to the content of the second solvent. Is not less than 1.0 and not more than 2.0.
- n is an integer of 1 to 6.
- ⁇ is an integer of 0 to 5
- m and 1 are each independently an integer of 1 to 6.
- the second solvent is 1,5-pentanediol; a urea derivative represented by the general formula (5).
- a urea derivative represented by the general formula (5) Is ethylene urea; the third solvent is ethylene urea; the content of the compound represented by the general formula (2) is 0.2% by mass with respect to the total mass of the inkjet recording ink. Not more than 3.0% by mass; and the pH of the ink and the ink for jet recording is in the range of 5 to 7.5.
- an ink jet recording ink including at least two kinds of color materials of a first color material and a second color material It was found that the above-mentioned problem can be solved by using an ink recording ink jet recording ink characterized in that the second color material has an ability to prevent the bronze phenomenon of the first color material.fc .
- the bronze phenomenon in the present invention means that as the recorded image dries, the crystal of the dye precipitates on the paper, and the recorded image reflects light and glows yellow or brown to form a metallic light. A phenomenon that gives off a swamp. " Further, a phthalocyanine dye represented by the above general formula (1) easily causes a bronzing phenomenon, and a compound represented by the above general formula (2) has an ability to prevent the bronzing phenomenon.
- the inkjet recording method of the present invention is characterized in that the inkjet recording ink is applied to a recording medium by an inkjet head to form an image.
- an ink cartridge according to the present invention includes the above-described ink for inkjet recording.
- an ink jet recording apparatus is characterized in that the above ink jet recording ink is mounted.
- the present invention which can solve the above first problem, it is possible to form an image excellent in weather resistance such as gas resistance and the like, while suppressing the occurrence of a buzzing phenomenon ( ⁇ It is possible to provide an ink jet recording ink that does not corrode or deteriorate members that come into contact with the ink, such as a head and a nozzle.
- an ink jet recording apparatus which can solve the second problem, not only the first problem is solved, but also when the ink jet recording method is used, an ink jet recording apparatus is provided.
- the nozzle hole does not cause clogging in the opening, does not cause the problem that ink droplets are not discharged from the recording head, and has the same good quality as the conventional ink jet ink containing urea.
- Excellent intermittent ejection stability and fixation recovery properties and does not cause color change or agglomeration due to the decomposition of dyes, has excellent long-term storage stability and ejection stability, and produces high-resolution, high-quality printed matter. It is possible to provide an ink jet recording ink having an appropriate viscosity that can be used.
- FIG. 1 is a perspective view showing an external configuration of an ink jet pudding.
- FIG. 2 is a perspective view showing the state shown in FIG. 1 with an exterior member removed.
- FIG. 3A is a perspective view of the recording head cartridge.
- FIG. 3B is an exploded perspective view of the recording head cartridge.
- FIG. 4 is an exploded perspective view showing the configuration of the recording head shown in FIGS. 3A and 3B.
- FIG. 5 is an exploded perspective view in which the recording head shown in FIGS. 3A and 3B is further disassembled.
- FIG. 6 is a partial cutaway perspective view illustrating the configuration of the recording element substrate of the recording head cartridge of FIGS. 3A and 3B.
- FIG. 7 is a partially cutaway perspective view showing the configuration of another recording element substrate of the recording head cartridge of FIGS. 3A and 3B.
- FIG. 8 is a sectional view of an essential part of the recording head cartridge of FIGS. 3A and 3B.
- FIG. 9 is a perspective view showing an assembly of the recording element unit and the ink supply unit of the recording head cartridge of FIGS. 3A and 3B.
- FIG. 10 is a perspective view showing the bottom side of the recording head cartridge of FIGS. 3A and 3B.
- the ink according to the present invention must contain a copper phthalocyanine dye represented by the following general formula (1) and a compound represented by the following general formula (2).
- a copper phthalocyanine dye represented by the following general formula (1) and a compound represented by the following general formula (2).
- the total content of the coloring materials in the ink is preferably 0.1 to 15.0% by mass based on the total mass of the ink for ink jet recording.
- M is an alkali metal (for example, Li, Na, K, Rb, Cs, Fr, etc.) or ammonia
- R 7 is 0H
- COOM is carbon An alkyl group having 4 to 9 atoms
- M is an alkali metal or ammonium
- x, y, and z are each independently an integer of 0 to 4.
- R 2 are each independently a substituted or unsubstituted alkyl group, aryl group, arylalkyl group, or hydrogen atom.
- R 3 and R 5 are each independently [a carboxyl group or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, and an alkyl group substituted with these groups, and R 4 and R 5 6 is independently a group other than those defined for R 3 and R 5
- p and r are each independently an integer of 1 to 5
- q and s are each independently an integer of 0 to 4
- the copper-cyan-cyanine dye represented by the general formula (1) used in the ink according to the present invention satisfies the following conditions (1) and (2) based on its absorption spectrum according to the theory described later. 3 , preferred.
- Peak absorption spectrum ⁇ wavelength 600 ⁇ ! It exists in both the range of 640 nm and the wavelength range of 650 nm to 680 nm.
- A is the peak value of the absorption spectrum in the wavelength range of 600 nr to 640 nm
- B is the peak value of the absorption spectrum in the wavelength range of & 50 ⁇ ! To 680 nm.
- the peak value of the absorption spectrum exists in the wavelength range of .600 nm to 640 nm in order to obtain the desired hue of the ink.
- the peak of the absorption spectrum of the copper phthalocyanine dye is present only in the wavelength range of 600 nm to 640 nm, the bronze phenomenon is very likely to occur, and the prevention of the bronze phenomenon is insufficient. There is. If the peak of the absorption spectrum exists both in the wavelength range of 600 nm to 640 nm and in the wavelength range of 650 ⁇ m to 680 nm, but does not satisfy BA ⁇ 0.75, it is robust. This is because they tend to be inferior.
- the content of the compound represented by the general formula (2) in the ink according to the present invention is preferably from the viewpoint of effectively controlling the bronze 'phenomenon by 0.1 to the total mass of the ink for inkjet recording. 1 quality It is preferable that it is fc% or more and 3.0 mass% or less. That's right. If the content is less than 0.1% by mass, the effect of suppressing the bronze phenomenon may not be sufficiently obtained. On the other hand, if the content is more than 3.0% by mass, the bronzing phenomenon is further prevented. This is because it is difficult to obtain a control effect.
- the content of the compound represented by the general formula (1) is preferably 0.5% by mass or more and 5.0% by mass or less based on the total mass of the ink for ink jet recording. %, The coloring properties may not be sufficiently exhibited, and if it exceeds 5.0% by mass, the effect of suppressing bronze may be insufficient.
- the ink according to the present invention is used in an ink jet recording apparatus having a fine ⁇ ⁇ ⁇ nozzle having a nozzle diameter of less than 20 m and a droplet volume of less than 4.5 picoliters.
- the content of the compound represented by the above general formula (2) is configured to be 0.2% by mass or more and 3.0% by mass or less based on the total mass of the ink jet recording ink. It is preferred. That is, with this configuration, clogging does not occur in the nozzles or openings of the ink jet recording apparatus having the above-described configuration, and there is no problem that ink droplets are not discharged from the recording head.
- the same good intermittent ejection stability as that of the ink jet ink to which the elements are added can be obtained, and an ink having an appropriate viscosity that can produce high-resolution, high-quality printed matter can be obtained.
- the coloring materials essential in the present invention are a copper phthalocyanine dye represented by the following general formula (1) and a compound represented by the following general formula (2).
- M is an alkali metal (for example, Li, Na, K, Rb, Cs, Fr, etc.) or ammonia
- R 7 is OH, COOM, R 8 COOM (R 8 is carbon An alkyl group having 4 to 9 atoms
- M is Al, lithium metal or ammonium
- x, y, and z are each independently an integer of 0 to 4.
- one type is selected from the group of the coloring materials represented by the general formula (1), and two or more types are mixed and used. You can also be.
- Specific examples of the coloring material represented by the general formula (1) include CI Direct Blue: 86, 87, 199 and the like.
- a copper phthalocyanine-based compound represented by the general formula (1) A compound represented by the following general formula (2) is contained in the ink together with the dye. By coexisting with the compound represented by the general formula (2), it is possible to increase the pH of the ink and impair other basic performances, but with a small amount of the general formula.
- the bronze phenomenon of (1) can be prevented.
- 1 ⁇ and R 2 are each independently a substituted or unsubstituted alkyl group, aryl group, arylalkyl group, or hydrogen atom
- R 3 and R 5 is each independently a carboxyl or a salt thereof, a sulfonic acid group or a salt thereof, a phosphoric acid group or a salt thereof, and an alkyl group substituted with these groups
- R 4 and R 6 are each independently R 3 and is a group other than those defined for R 5
- p and r are each independently an integer of 1 ⁇
- q and s are independently an integer of 0 to 4, respectively therewith, and, p + Q ⁇ 5, r + s ⁇ 5.
- the compound represented by the general formula (1) causes regular stacking (association) on paper (the surface of the recording medium). It is considered that the bronze phenomenon can be prevented by the compound represented by the general formula (2) entering the structure of the stacking (association) formed by the general formula (1).
- the reason why the compound represented by the general formula (2) is effective even in a small amount is considered to be due to the structure of the compound represented by the general formula (2).
- specific examples of the compound represented by the general formula (2) will be described. In the present invention, any of these can be used, and among them, Exemplified Compound 1 is most preferably used.
- the ink of the present invention is prepared by dissolving or dispersing the above-mentioned coloring material in an aqueous medium mainly composed of water.
- aqueous medium a mixed medium containing water and a water-soluble organic solvent can be used.
- Water-soluble organic solvents such as alcohols, polyhydric alcohols, polyols, glycol ethers, nitrogen-containing polar solvents, sulfur-containing polar solvents, ureas, and saccharides, are generally used as solvents for ink-jet inks. Can be used without any problems. These solvents are appropriately used for the purpose of maintaining the moisturizing property of the ink, improving the solubility and dispersibility of the coloring material, and penetrating the ink into the recording paper.
- the content of the water-soluble organic solvent is preferably in the range of 1% by mass to 50% by mass, more preferably in the range of 3% by mass to 40% by mass, based on the total mass of the ink jet recording ink.
- the content of water in the ink is preferably in the range of 30% by mass to 95% by mass with respect to the total mass of the ink for inkjet recording in order to maintain good solubility of the dye and stable ejection of the ink. .
- a surfactant can be contained in the ink in order to lower the surface tension of the ink and obtain better ink jet suitability.
- the surfactant used at this time is preferably an ethylene oxide adduct of acetylene glycol represented by the following general formula (3), and 0.1 to 1.5 mass% of the surfactant in the ink. % Is particularly preferred.
- the ink of the present invention preferably has the following configuration in addition to the above configuration. That is, glycerin as the first solvent, a diol represented by the following general formula (4) as the second solvent, a urea derivative represented by the following general formula (5) as the third solvent, ethylene glycol and the like. It is preferable to use an aqueous medium containing at least three solvents of any one selected from 2-pyrrolidone.
- the total amount is preferably 18% by mass or more and 27% by mass or less based on the total mass of the ink jet recording ink. If the total content is less than 18% by mass, the adhesion recovery property may be deteriorated. If the total content exceeds 27% by mass, the viscosity of the ink increases, and the ink into the nozzle or the opening may be removed. Supply speed may be significantly reduced.
- the ratio of the sum of the content of the first solvent and the content of the second solvent in the ink is also important. That is, the total of the content of the first solvent and the content of the second solvent is preferably from 12% by mass to 20% by mass with respect to the total mass of the ink jet recording ink. If the total content is less than 12% by mass, the fixability and intermittent ejection stability may deteriorate. If the total content exceeds 20% by mass, the viscosity of the ink increases, and the Feeding speed may be significantly reduced.
- the mass ratio of the content of the first solvent to the content of the second solvent in the ink is preferably 1.0 or more and 2.0 or less.
- the mass ratio of the content is less than 1.0, the intermittent ejection stability may be deteriorated, and when it exceeds 2.0, the fixation recovery property may be deteriorated.
- the ink achieves all the performances of the fixation recovery property, the intermittent ejection stability, and the high-speed printing ejection stability.
- a surfactant may be added to the ink according to the present invention.
- surfactants include anionic surfactants such as fatty acid salts, higher alcohol sulfates, liquid fatty oil sulfates, alkylarylsulfonates, polyxylene alkyl ethers, and polysulfates.
- anionic surfactants such as fatty acid salts, higher alcohol sulfates, liquid fatty oil sulfates, alkylarylsulfonates, polyxylene alkyl ethers, and polysulfates.
- non-ionic surfactants such as T-ethylene glycol, and one or more of these can be appropriately selected and used.
- the surface tension of the ink at 251 should be 10 mN / m (dyn / cm) or more, more preferably 20 mN / m or more, and 60 mNZm or less. It is preferable to determine the amount to be added. By adding a surfactant to the ink, it is possible to effectively suppress the occurrence of printing errors (deviation of ink droplet landing points) due to wetting of the nozzle tip.
- the ink according to the present invention may further include, if necessary, a pH adjuster, an antiseptic, an antiseptic, a fungicide, an antioxidant, an antioxidant, an evaporation promoter, a chelating agent.
- a pH adjuster an antiseptic, an antiseptic, a fungicide, an antioxidant, an antioxidant, an evaporation promoter, a chelating agent.
- Various additives such as an agent and a water-soluble polymer may be contained as long as the effects obtained by adding them are obtained and the effects of the present invention are not impaired.
- the ink according to the present invention is adjusted so as to have a desired viscosity and pH in order to obtain good ejection characteristics when used in an ink jet recording apparatus.
- the pH of the ink is preferably adjusted as described below.
- the pH of the ink is 7.5 or less.
- intermittent ejection stability prevent clogging at the tip of the nozzle, and provide an ink capable of giving high-resolution, high-quality printed matter, 5 or more is preferable.
- 7.5 or less is more preferable.
- the recording medium used to form an image using the ink according to the present invention is a special paper having a coating layer or an ink receiving layer on the surface, such as ordinary paper or glossy paper, coated paper, or glossy film. Commonly used notes such as media Recording media.
- a special medium having a hydrophilic porous particle layer, a porous polymer layer, etc. on a base material is an example of a recording medium capable of obtaining an image with higher vividness, contrast, and transparency. it can.
- a coloring material such as a dye or a pigment is adsorbed on fine particles forming a hydrophilic porous structure in the ink receiving layer, and at least this adsorption is performed.
- This is a recording medium on which an image is formed by using a coloring material, and is particularly suitable when an ink jet method is used.
- Such a recording medium is preferably of a so-called absorption type in which ink is absorbed by voids formed in an ink receiving layer on a support.
- the absorption type ink-receiving layer is constituted as a hydrophilic porous layer mainly composed of fine particles and containing a binder and other additives as required.
- fine particles include inorganic pigments such as silica, clay, talc, calcium carbonate, aluminum oxide such as kaolin, alumina or alumina hydrate, diatomaceous earth, titanium oxide, hydrated talcite, zinc oxide, etc .; Organic pigments such as ethylene resin and styrene resin are listed, and one or more of these are used.
- a binder that is preferably used include a water-soluble polymer latex.
- cellulose derivatives such as carboxymethylcellulose, hydroxyethylcellulose, hydroxyprooilmethylcellulose, SBR latex, NBR latex , Methyl methacrylate-butadiene copolymer latex, functional group-modified polymer latex, vinyl copolymer latex such as ethylene vinyl
- additives can be used, for example, a dispersant, a thickener, a pH adjuster, a lubricant, a fluidity modifier, a surfactant, Antifoaming agents, release agents, optical brighteners, ultraviolet absorbers, antioxidants, etc. are used. (Recording method and recording device)
- a recording method and a recording apparatus suitable for performing image recording on a recording medium using the ink according to the present invention include, for example, applying thermal energy corresponding to a recording signal to ink in a chamber of a recording head; A method and an apparatus for generating a droplet by the method are described.
- the outer periphery of the apparatus main body M100 of the printing apparatus in this embodiment includes a lower case M1001, an upper case M1002, an access cover M1003, and a discharge tray Ml.
- the housing is composed of an exterior member including the outer member and a chassis M3.019 (see FIG. 2) housed in the exterior member.
- the chassis M309 is formed of a plurality of plate-like metal members having a predetermined rigidity, forms a skeleton of a recording device, and holds each recording operation mechanism described later.
- the lower case M1001 is a substantially lower half of the exterior of the apparatus main body M1000
- the upper case M1002 is a substantially upper half of the exterior of the apparatus main body M1000.
- Each of them is formed, and a combination of the two cases forms a hollow body structure having a storage space for storing each mechanism described below.
- An opening is formed in each of the upper surface and the front surface of the device main body M100.
- the discharge tray M1004 is rotatably held at one end thereof by the lower case M1001, and the opening formed on the front surface of the lower case M101 by the rotation thereof. Can be opened and closed. For this reason, when the recording operation is performed, the recording sheet can be discharged from here, and the discharged recording sheet can be discharged by rotating the discharge tray M104 toward the front side to open the opening. P can be loaded sequentially. Also, two auxiliary trays Ml004a and M104b are stored in the discharge tray Ml04, and if necessary, each tray can be pulled out to the front. , Paper support area 3 levels The floor can be expanded or contracted.
- One end of the access cover M 1003 is rotatably held by the upper case M 1002 so that the opening formed on the upper surface can be opened and closed, and the access force Ml 003 is opened.
- a projection formed on the back surface rotates the cover opening / closing lever, and the rotation position of the lever is set by a microswitch.
- the open / close state of the access cover can be detected.
- a power key E0018 and a resume key E0019 are provided so as to be able to be pressed, and an LED E0020 is provided.
- the LED is turned on.
- E0020 lights up to notify the operator that recording is possible.
- the LED E0020 has various display functions such as changing the blinking method and color, and notifying the printer of troubles or the like all over the place.
- the recording operation mechanism includes an automatic feeding unit M3022 that automatically feeds the recording sheet P into the apparatus main body, and a recording sheet P sent one by one from the automatic feeding unit to a predetermined recording position.
- a recovery unit (M500) for performing processing.
- the recording head cartridge used in the self-recording section will be described with reference to FIGS.
- the recording head HI 001 is one component of the recording head cartridge H1000, and the recording head cartridge H1000 is the recording head H1000. It comprises an ink tank HI 900 (H1901, HI 902, HI 903, H 1904) detachably provided to the head H 1001 and the recording head H 1001.
- the recording head cartridge HI 000 is fixedly supported by positioning means and electrical contacts of a carriage M4001 mounted on the ink jet recording apparatus main body, and is detachable from the carriage M4001. Has become.
- Ink tank HI 901 is for black ink
- ink tank HI 902 is for cyan ink
- ink tank H1 903 is for magenta ink
- ink tank H 1904 is for yellow ink.
- each of the ink tanks H1901, HI902, HI903, and H1904 is detachable from the recording head H1001, and the respective ink tanks are replaceable. The running cost of printing is reduced.
- FIG. 4 to FIG. 10 are explanatory diagrams for explaining preferred head cartridges, recording heads, and inductors to which the present invention is applied or applied and their respective relationships.
- each component will be described with reference to these drawings.
- the recording head HI 001 is a bubble jet type side-shutter type that performs recording using an electrothermal transducer that generates heat energy to cause film boiling in response to an electric signal. Is
- the recording head H100 includes a recording element unit H1002, an ink supply unit H1003, and a tank holder H2000.
- the recording element unit HI 002 includes a first recording element substrate HI 100, a second recording element substrate HI 101, a first plate HI 200, and an electric wiring tape.
- FIG. 6 is a partially exploded perspective view for explaining the configuration of the first recording element substrate HI100.
- the first recording element substrate HI 100 has, for example, a 3i substrate HI 110 having a thickness of 0.5 to 1111111 and a long groove-shaped through hole as an ink flow path in the ink supply port HI 102.
- Anisotropic etching using a method such as sand blasting, etc., and the electrothermal conversion elements HI103 are arranged in a row in a row in a row on each side of the ink supply port HI102.
- H 1103 and electric wiring such as A 1 for supplying power to the electrothermal transducer H 1103 are formed by a film forming technique.
- electrode portions HI 104 for supplying power to the electric wiring are arranged on both outer sides of the electrothermal transducer H 1103, and bumps HI 105 such as Au are formed on the electrode portions H 1104.
- An ink flow path wall for forming an ink flow path corresponding to the electrothermal transducer HI103 is formed on the Si substrate.
- the HI 106 and the discharge port HI 107 are formed of a resin material by a photolithography technique, and form a discharge port group HI 108. Therefore, since the discharge port is provided to face the electrothermal conversion element HI103, the ink supplied from the ink flow path HI102 is discharged by bubbles generated by the electrothermal conversion element HI103. .
- FIG. 7 is a partially exploded perspective view for explaining the configuration of the second printing element substrate HI101.
- the second recording element substrate HI 101 is a recording element substrate for ejecting three color inks, and has three ink supply ports HI 102 formed in parallel, both sides sandwiching each ink supply port.
- An electrothermal conversion element and an ink ejection port are formed in the device.
- the ink supply port, electrothermal conversion element, electric wiring, electrode part, etc. are formed on the i substrate, and the ink flow path is formed on the i substrate by photolithography technology in the resin material department. ⁇
- the ink ejection port is formed.
- a bump H1105 made of Au or the like is formed on the electrode portion H1104 for supplying electric power to the electric wiring.
- the first plate HI 200 for example, are formed in the alumina having a thickness of 5 ⁇ 10mm (A 1 2 0 3) material.
- the material of the first plate is not limited to alumina, but has a coefficient of linear expansion equal to that of the material of the recording element substrate HI 100, and has a thermal expansion coefficient of the material of the recording element substrate HI 100. It may be made of a material having a thermal conductivity equal to or higher than the conductivity.
- Material of the first plates HI 200 is, for example, silicon (S i), aluminum nitride (A 1 N), Jirukonia, silicon nitride (S i 3 N 4), silicon carbide (S i C), molybdenum (Mo ) Or tungsten (W).
- the first plate H1200 has an ink supply port H1201 for supplying black ink to the first recording element substrate H1100 and a cyan, magenta, and yellow ink supply port to the second recording element substrate H1101.
- the ink supply port HI 201 for supplying ink is shaped
- the ink supply port 1102 of the recording element substrate corresponds to the ink supply port H 1201 of the first plate HI 200, respectively, and the first recording element substrate H 1100 and the second recording element substrate H 1 Each 101 is bonded and fixed to the first plate HI 200 with high positional accuracy.
- the first adhesive H 1202 used for bonding has a low viscosity, a low curing temperature, is cured in a short time, has relatively high hardness after curing, and has ink resistance.
- the first adhesive HI 202 is, for example, a thermosetting adhesive mainly containing an epoxy resin, and the thickness of the adhesive layer is desirably 50 m or less.
- the electric wiring tape H1300 applies an electric signal for discharging ink to the first recording element substrate H1100 and the second recording element substrate HI101.
- An electrode terminal portion H1303 (not shown) for making an electrical connection with the electric contact substrate H2200 having the external signal input terminal HI301 of the second input terminal HI302 and the electrode terminal HI302 1303 are connected by a continuous copper foil wiring pattern.
- the electric wiring tape H1300, the first recording element substrate 1100, and the second recording element substrate HI101 are electrically connected to each other.
- the connection method is such that the electrode portion 1104 of the recording element substrate is electrically connected to the electric element.
- the electrode terminals HI 302 of the wiring tape H 1300 are electrically connected by thermosonic crimping.
- the second plate H 1400 is, for example, a single plate-like member having a thickness of 0.. 5 to 1 mm, such as alumina (A 1 2 0 3) ceramic, such as, Al, a metal material such as SUS Is formed.
- the first recording element substrate H1100 and the second recording element substrate H1101, which are bonded and fixed to the lp plate HI200, have openings larger than the outer dimensions of the second recording element substrate H1101.
- the first recording element substrate H1100 and the second recording element substrate H1101 and the second adhesive HI203 are attached to the first plate HI200 so that the electric wiring tape HI300 can be electrically connected in a planar manner.
- the back surface of the electric wiring tape HI300 is adhered and fixed with a third adhesive H1306.
- the electrical connection between the first recording element substrate H 1100 and the second recording element substrate H 1101 and the electric wiring tape H 1300 is made up of a first sealant H 1307 (not shown) and a second sealant HI. Sealed by 308 to protect the electrical connections from corrosion by ink and external impact.
- the first sealant mainly seals the back side of the connection portion between the electrode terminal H 1302 of the electric wiring tape and the electrode portion H 1105 of the recording element substrate and the outer peripheral portion of the recording element substrate, and the second sealing agent.
- the stopper seals the front side of the connection part.
- an electric contact board H2200 having an external signal input terminal H1301 for receiving an electric signal from the main unit at an end of the electric wiring tape is thermally compressed by using an anisotropic conductive film or the like to be electrically connected. Connecting.
- the electric wiring tape HI 300 is bent at one side surface of the first plate HI 200 and is adhered to the side surface of the first plate HI 200 with a third adhesive HI 306 (not shown).
- a third adhesive HI 306 for example, a thermosetting adhesive having a thickness of 10 to 100 and containing an epoxy resin as a main component is used.
- the ink supply member HI500 is formed by, for example, resin molding.
- resin material it is desirable to use a resin material mixed with 5 to 40% of a glass filler in order to improve shape rigidity.
- the ink supply member HI 500 is a component of an ink supply unit HI 003 for guiding ink from the ink tank H 1900 to the recording element unit HI 002.
- the ink flow path HI 501 is formed by ultrasonically welding the forming member HI 600.
- ink tank The HI 517 joint, which engages with the 9001900, is welded with a filter HI 700 to prevent dust from entering from outside, and furthermore, to prevent the evaporation of ink from the joint HI 517.
- the seal rubber H 1800 is installed.
- the ink supply member HI 500 also partially has a function of holding a detachable ink tank HI 900, and a first hole for engaging the second claw HI 910 of the ink tank HI 900. H 1503.
- a terminal fixing portion HI 512 for positioning and fixing the electric contact substrate H2 200 of the recording element unit HI 002 is provided, and the terminal fixing portion HI 512 and the periphery thereof are provided with a number of raft ribs. The rigidity of the surface with 512 is increased.
- the recording head HI 001 is completed by coupling the recording element unit H 1 002 to the ink supply unit HI 003 and further coupling to the tank holder H 2000. Coupling is performed as follows.
- the electrical contact board H 1301 of the recording element unit HI 002 is positioned and fixed on one side of the ink supply member HI 500 by the terminal positioning pins HI 515 (2 places) and the terminal positioning holes H 1309 (2 places). Is done.
- the fixing method is, for example, fixed by caulking a terminal connection pin HI515 provided on the ink supply member HI500, but may be fixed using other fixing means.
- Figure 9 shows the completed drawing.
- the recording head HI001 is completed by fitting a coupling hole and a coupling portion of the ink supply member HI500 with the tank holder to the tank holder H2000 and coupling them.
- Figure 10 shows the completed drawing.
- FIGS. 3A and 3B are diagrams illustrating the installation of the recording head HI 001 and the ink tanks HI 901, HI 902, H1903, and HI 904 constituting the recording head cartridge H 1000.
- Tanks HI 901, HI 902, HI 903, and HI 904 contain inks of corresponding colors.
- each ink tank is provided with an ink supply port H 1907 for supplying the ink in the ink tank to the recording head H 1001.
- the ink supply port H1907 of the ink tank HI901 or the joint HI520 of the self-recording head H1001 is connected to the filter HI700.
- the black ink in the ink tank HI 901 passes through the first plate HI 200 from the ink supply port HI 907 through the ink flow path HI 501 of the recording head HI 001 and the first plate HI 200. Supplied to the substrate.
- a foaming chamber HI having an electrothermal transducer HI103 and a discharge port HI107.
- the ink is supplied to 109, and is discharged toward the recording medium to a certain recording paper by the thermal energy supplied to the electrothermal transducer HI103.
- the compounds represented by Structural Formula 1-1 and Structural Formula 1-2 are both I.
- Direct Bullet 199 is a mixture of compounds having different positions and numbers of substituents. Therefore, the absorption spectra of the compounds contained in the above I.
- Direct Blue 199 and represented by the above-mentioned structural formulas 11-1 and 1-2 are different from each other.
- a 1% by mass aqueous solution of the compounds represented by the above structural formulas 1-1 and 1-2 was renewed 1000 times with pure water, and the absorption spectrum was measured according to JISK 0115 under the following conditions. did.
- A is the peak value of the absorption spectrum in the wavelength range of 60 ⁇ ! To 640 nm
- B is the peak value of the absorption spectrum in the wavelength range of 650 nm to 680 nm.
- the obtained ink was packed in an ink cartridge for Canon IXUS 950i, and an image was formed using Canon IXUS 950i.
- the following evaluation items were evaluated for each ink and the formed image. Table 2 shows the evaluation results.
- the ink was prepared, the initial p value was measured.
- the ink was sealed in a Teflon container with a lid, and stored for 3 months in a constant temperature bath of No. 6, taken out, cooled down to room temperature, and measured for pH after storage. Then, the amount of pH change was determined from the initial and after storage pH values.
- the evaluation criteria for storage pH stability are as follows.
- the bronzing phenomenon is more remarkably observed as the ink ejection density (duty) is higher.
- Canon HG-201 glossy film
- the ink ejection density (duty) was set to 5% intervals in the range of 0 to 100%.
- An ink was applied to create a printed matter.
- the highest duty at which the bronzing phenomenon began to appear was used as an index of bronze phenomenon occurrence. In other words, it can be said that the higher the duty at which the bronzing phenomenon occurs, the more difficult it is for the bronzing phenomenon to occur.
- Table 2 the higher the duty at which the bronzing phenomenon occurs, the more difficult it is for the bronzing phenomenon to occur.
- the compounds represented by Structural Formula III, Structural Formulas 1-4 and 1-5 are all C.I.
- a 1% by mass aqueous solution of the compounds represented by the above structural formulas 1-3, 1-4 and 115 is diluted 1000 times with pure water, and the absorption spectrum is obtained under the conditions of "T".
- T was measured in accordance with JIS K 0115.
- BZA ratio of a peak value in a wavelength range of 600 nm to 640 nm and a peak value in a wavelength range of 650 xim to 680 nm was determined.
- A is the peak value of the absorption spectrum in the wavelength range of 600 nm to 640 nm
- B is the peak value of the absorption spectrum in the wavelength range of 65 ⁇ ! To 680 nm.
- HG-201 glossy film manufactured by Canon as a recording medium
- ink is applied to the recording medium so that the ink discharge density (duty) is in the range of 0 to 100%, and in increments of 5%.
- the highest duty at which the bronze phenomenon began to appear was used as an index of the bronze phenomenon development. Evaluation criteria for the occurrence of bronze phenomena are as follows.
- A: Bronze generation duty is 95% or more
- Printed materials were produced using PR-101 (gloss release) manufactured by Canon as the recording medium with an ink ejection density (duty) of 100%.
- the color difference ⁇ was calculated from the obtained printed matter by the following method, and the gas resistance was evaluated.
- the evaluation method and evaluation criteria for gas resistance are as follows.
- Evaluation device Ozone FE meter
- Exposure conditions Temperature in the chamber 4 ⁇ Relative humidity 55%, exposure under 3ppm ozone atmosphere for 2 hours
- AA ⁇ is less than 20 ' A: ⁇ is 20 or more and less than 25
- ⁇ is 25 or more and less than 30
- the obtained ink was packed in an ink cartridge for Canon PI XUS 950 i, and the following evaluation items were evaluated using Canon X XUS 950 i.
- the PI XUS 950 i has been modified to have a fine nozzle with a nozzle diameter of less than 20 m and a droplet volume of less than 4.5 picoliters. What was used was used.
- a vertical line is printed at a certain fixed interval of discharge pause under the condition that the ink at the nozzle of the ink jet: ⁇ does not rise in temperature.
- a vertical go line formed immediately after pausing was observed using a micrometer with an objective magnification of 50 ⁇ and evaluated according to the following criteria.
- the evaluation criteria for intermittent discharge stability are as follows.
- the recording head was removed from the main body of the recording apparatus with the ink cartridge attached, and left in a thermostat at a temperature of 35 and a relative humidity of 10% for 2 weeks.
- the recording head was attached to the printer again, and the suction recovery operation was performed.
- the evaluation was performed using the number of suction recovery operations until all the nozzles became printable.
- the evaluation criteria for the fixability are as follows.
- All nozzle force of recording head can be printed within 2 suction times
- not all the blemishes on the recording head can be printed.
- Solid printing was performed on each A4 size recording medium with each ink using an ink injection density (duty) of 1 Q0%. At that time, the speed of ink supply to the nose Degree (refill speed) was judged from the printing condition, and high-speed printing discharge stability was evaluated.
- the evaluation criteria for high-speed printing discharge stability are as follows.
- Example 27 The inks of 7 to 44 were prepared.
- PI XU S950i has a nozzle diameter of less than 20 m and a drop volume force of S4.5pi.
- the one modified so as to have a fine nozzle of less than the collimator was used.
- HG-201 glossy film manufactured by Canon as a recording medium
- ink is applied to the recording medium so that the ink ejection density (duty) is in increments of 5% in the range of 0 to 100% to create a printed matter. did.
- the highest duty at which the bronze phenomenon began to appear was used as an index of the bronze phenomenon development.
- the evaluation criteria for the bronze phenomenon onset are as follows.
- A: Bronze generation duty is 95% or more
- a vertical line is printed at a certain interval of the discharge pause time under conditions where the ink at the nozzle of the ink jet does not rise in temperature. Observation was performed using a micrometer with an objective magnification of 50, and the evaluation was performed based on the following criteria.
- the evaluation criteria for intermittent ejection stability are as follows.
- PI XUS 950 i a modified head that integrates a tank and a holder equipped with an ink cartridge filled with ink
- the ink The recording head was removed from the main unit of the recording device with the cartridge still attached, and left in a thermostat at a temperature of 35 and a relative humidity of 10% for 2 weeks. Mount the recording head on the printer again. Then, a suction recovery operation was performed. The evaluation was performed using the number of suction recovery operations until all the nozzles of the recording head were ready for printing.
- the evaluation criteria for the fixability are as follows.
- All nozzles of the recording head can be printed with two suction cycles
- Solid printing was performed on an A4 size recording medium using each of the inks with an ink ejection density (duty) of 100%. At that time, the ink supply speed (refill speed) to the nozzles was judged from the printing state, and the high-speed printing ejection stability was evaluated.
- the evaluation criteria for high-speed printing discharge stability are as follows.
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- 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)
- Dot-Matrix Printers And Others (AREA)
- Ink Jet (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
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EP05729908A EP1749863B1 (en) | 2004-04-08 | 2005-04-07 | Ink for inkjet recording, inkjet recording method, ink cartridge, and inkjet recording apparatus |
CN2005800064534A CN1926204B (zh) | 2004-04-08 | 2005-04-07 | 喷墨记录用墨水、喷墨记录方法、墨盒、以及喷墨记录装置 |
DE602005023982T DE602005023982D1 (de) | 2004-04-08 | 2005-04-07 | Tinte für tintenstrahlaufzeichnung, tintenstrahlaurahlaufzeichnungsvorrichtung |
AT05729908T ATE483772T1 (de) | 2004-04-08 | 2005-04-07 | Tinte für tintenstrahlaufzeichnung, tintenstrahlaufzeichnungsverafhren; tintenpatrone sowie tintenstrahlaufzeichnungsvorrichtung |
US11/234,307 US7244299B2 (en) | 2004-04-08 | 2005-09-26 | Ink jet recording ink, ink jet recording method, ink cartridge, and ink jet recording apparatus |
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JP2004114670 | 2004-04-08 | ||
JP2004-114669 | 2004-04-08 | ||
JP2004-114670 | 2004-04-08 | ||
JP2004114669 | 2004-04-08 |
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US11/234,307 Continuation US7244299B2 (en) | 2004-04-08 | 2005-09-26 | Ink jet recording ink, ink jet recording method, ink cartridge, and ink jet recording apparatus |
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WO2005097923A1 true WO2005097923A1 (ja) | 2005-10-20 |
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PCT/JP2005/007193 WO2005097923A1 (ja) | 2004-04-08 | 2005-04-07 | インクジェット記録用インク、インクジェット記録方法、インクカートリッジ、及びインクジェット記録装置 |
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US (1) | US7244299B2 (ja) |
EP (1) | EP1749863B1 (ja) |
CN (1) | CN1926204B (ja) |
AT (1) | ATE483772T1 (ja) |
DE (1) | DE602005023982D1 (ja) |
WO (1) | WO2005097923A1 (ja) |
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US7615113B2 (en) | 2005-12-21 | 2009-11-10 | Canon Kabushiki Kaisha | Ink, ink jet recording method, ink cartridge, recording unit, and ink jet recording apparatus |
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- 2005-04-07 EP EP05729908A patent/EP1749863B1/en not_active Not-in-force
- 2005-04-07 CN CN2005800064534A patent/CN1926204B/zh not_active Expired - Fee Related
- 2005-04-07 WO PCT/JP2005/007193 patent/WO2005097923A1/ja not_active Application Discontinuation
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Also Published As
Publication number | Publication date |
---|---|
EP1749863A1 (en) | 2007-02-07 |
EP1749863A4 (en) | 2009-06-03 |
CN1926204B (zh) | 2011-02-02 |
US20060011097A1 (en) | 2006-01-19 |
DE602005023982D1 (de) | 2010-11-18 |
EP1749863B1 (en) | 2010-10-06 |
ATE483772T1 (de) | 2010-10-15 |
US7244299B2 (en) | 2007-07-17 |
CN1926204A (zh) | 2007-03-07 |
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