JP2015183094A - Ink, ink cartridge, and inkjet recording method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ink which can record an image having excellent ozone resistance and high optical density.SOLUTION: There is provided an aqueous ink containing a coloring material and a water-soluble organic solvent. The coloring material contains a compound represented by the general formula (I) in the figure, where M each independently represent a hydrogen atom, an alkali metal, ammonium or organic ammonium. The water-soluble organic solvent comprises at least one of triethylene glycol monobutyl ether and 1,2-hexanediol.

Description

  The present invention relates to an ink, an ink cartridge, and an ink jet recording method.

  The ink jet recording method is a recording method in which an ink droplet is applied to a recording medium to form an image, and is rapidly spreading due to its low cost and an increase in recording speed. In general, the recorded matter obtained by the ink jet recording method has low image fastness as compared with a silver salt photograph. In particular, when the recorded material is exposed to environmental gases such as light, humidity, heat, or ozone gas present in the air for a long time, the color material of the recorded material deteriorates, and the color tone of the image or fading easily occurs. There is a problem.

  The discoloration of an image recorded using an ink containing a black color material (black ink) is often accompanied by a change in color tone due to deterioration of the color material. Further, the black ink is used for both monochrome images and full-color images, and is required to express a higher optical density.

  For black color materials, polyazotization of molecular structure has been widely studied. For example, there are proposals regarding a tetrakisazo compound having an electron-withdrawing group, a tetrakisazo compound having three naphthalene rings, and a tetrakisazo compound having a nitrogen-containing heterocycle (see Patent Documents 1 to 3).

International Publication No. 2005/108502 International Publication No. 2005/097912 International Publication No. 2006/051850

  However, as a result of studies by the present inventors, it was found that images recorded with inks containing black color materials proposed in Patent Documents 1 to 3 have insufficient ozone resistance and optical density. Furthermore, it has been found that an image recorded with an ink containing a tetrakisazo compound may have different optical densities depending on the molecular structure. For example, since the tetrakisazo compound proposed in Patent Document 1 has three naphthalene rings, there are many π electrons, and the maximum absorption wavelength is shifted to a long wavelength region. For this reason, although the optical density of the image is improved, the electrons in the molecule are delocalized and easily oxidized, so that the ozone resistance of the image becomes insufficient.

  Further, since the tetrakisazo compound proposed in Patent Document 2 has a nitrogen-containing heterocycle, the ozone resistance of the image is improved to some extent. Furthermore, since there are many π electrons and the maximum absorption wavelength is shifted to the long wavelength region, the optical density of the image is improved to some extent. However, even with the ink using the tetrakisazo compound proposed in Patent Document 2, the ozone resistance and the optical density of the recorded image are still insufficient.

  Some of the tetrakisazo compounds proposed in Patent Document 3 have more π electrons than the trisazo compounds, and the maximum absorption wavelength is shifted to the long wavelength region, so that the optical density of the image is likely to be improved to some extent. Furthermore, among the tetrakisazo compounds proposed in Patent Document 3, the use of a compound having an electron-withdrawing group improves the ozone resistance of the image to some extent. However, even the ink using the tetrakisazo compound proposed in Patent Document 3 has room for further improvement in the ozone resistance and optical density of the recorded image.

  Accordingly, an object of the present invention is to provide an ink capable of recording an image having high optical density and excellent ozone resistance. Another object of the present invention is to provide an ink cartridge and an ink jet recording method using the ink.

  The above object is achieved by the present invention described below. That is, according to the present invention, a water-based ink containing a coloring material and a water-soluble organic solvent, wherein the coloring material contains a compound represented by the following general formula (I), and the water-soluble organic solvent is: An ink comprising at least one of triethylene glycol monobutyl ether and 1,2-hexanediol is provided.

（前記一般式（Ｉ）中、Ｍは、それぞれ独立に水素原子、アルカリ金属、アンモニウム、又は有機アンモニウムを表す）

(In the general formula (I), M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium)

  According to the present invention, it is possible to provide an ink capable of recording an image having a high optical density and excellent ozone resistance. In addition, according to the present invention, it is possible to provide an ink cartridge and an ink jet recording method using this ink.

It is sectional drawing which shows typically one Embodiment of the ink cartridge of this invention. FIG. 2 is a diagram schematically illustrating an example of an ink jet recording apparatus used in the ink jet recording method of the present invention, in which (a) is a perspective view of a main part of the ink jet recording apparatus, and (b) is a perspective view of a head cartridge.

  Hereinafter, the present invention will be described in more detail with reference to preferred embodiments. In the present invention, when the compound is a salt, the salt is dissociated into ions in the ink, but is expressed as “contains a salt” for convenience.

  The present inventors have studied a tetrakisazo dye and a water-soluble organic solvent capable of recording an image having a high optical density for the purpose of achieving both the optical density of the image and the ozone resistance. As a result, it was found that it is difficult to record an image having both optical density and ozone resistance even when using the ink containing the compounds proposed in Patent Documents 1 and 2. Therefore, the present inventors paid attention to the compound represented by the general formula (I) capable of recording an image excellent in optical density among the compounds proposed in Patent Document 3.

  The molecular structure of the black color material and the optical density of the image are considered to have the following relationship. In general, an image with low light reflectance in the visible light region (approximately 380 to 830 nm) has a high optical density and is easily recognized. Further, as shown in the “standard photopic spectral luminous efficiency curve” defined by the CIE (International Commission on Illumination), the wavelength at which humans feel the brightest, that is, the optical density is low is around 555 nm. That is, in order to increase the optical density of an image, it is important to use a black color material having a low reflectance of light near 555 nm, that is, a high absorption characteristic near 555 nm, in the visible light region. The maximum absorption wavelength of the tetrakisazo compound having an electron-withdrawing group proposed in Patent Document 3 is around 570 nm. On the other hand, the maximum absorption wavelength of the tetrakisazo compound having three naphthalene rings proposed in Patent Document 1 is shifted to around 640 nm. Furthermore, the maximum absorption wavelength of the tetrakisazo compound having a nitrogen-containing heterocycle proposed in Patent Document 2 is around 600 nm. For this reason, when the compound represented by the general formula (I) (tetrakisazo compound having an electron-withdrawing group) is used, an image having a higher optical density is recorded as compared with the case of using another tetrakisazo compound. It is considered possible.

  In order to improve the optical density, the compound represented by the general formula (I) has a smaller number of aromatic rings than other tetrakisazo compounds, does not have a nitrogen-containing heterocycle, and has a maximum absorption wavelength of 555 nm. The molecule is designed to show absorption characteristics in the vicinity. Due to such molecular design, the compound represented by the general formula (I) has characteristics such that it is difficult to polarize and to associate. Therefore, the present inventors have prepared and studied a large number of inks containing various water-soluble organic solvents in order to improve the associability of the compound represented by the general formula (I). As a result, when at least one water-soluble organic solvent of triethylene glycol monobutyl ether and 1,2-hexanediol is used, the association property of the compound represented by the general formula (I) is improved, and the optical density of the image is improved. And ozone resistance were found to be compatible. About this reason, the present inventors guess as follows.

  The compound represented by the general formula (I) has a benzene ring and a naphthalene ring in the molecule, but does not have an aromatic heterocycle, and therefore has a small polarization in the molecule. For this reason, the compound represented by the general formula (I) is stabilized in the ink due to the presence of hydration water in the vicinity of the molecule. On the other hand, triethylene glycol monobutyl ether and 1,2-hexanediol have a hydrophilic part and a hydrophobic part in the molecule. When an ink is applied to a recording medium and permeates and a liquid component such as water evaporates, triethylene glycol monobutyl ether having a hydrophobic portion is present in the vicinity of the compound represented by the general formula (I) having a low polarity. Or 1,2-hexanediol. For this reason, the compound represented by the general formula (I) is destabilized by reducing the amount of hydration water present in the vicinity thereof. The destabilized compound represented by the general formula (I) forms a cluster as the liquid component such as water in the ink evaporates, and the apparent molecular size increases. Therefore, since the cluster formed by the compound represented by the general formula (I) tends to stay on or near the surface of the recording medium, the optical density of the image is increased, and by forming the cluster, the ozone resistance is improved. It is thought that.

  On the other hand, when diethylene glycol monobutyl ether and 1,2-pentanediol are used instead of triethylene glycol monobutyl ether and 1,2-hexanediol, the ozone resistance and optical density of the image may be insufficient. found. About this reason, the present inventors guess as follows. Diethylene glycol monobutyl ether and 1,2-pentanediol also have a hydrophilic part and a hydrophobic part in the molecule. When the ink is applied to the recording medium and permeates and a liquid component such as water evaporates, diethylene glycol monobutyl ether having a hydrophobic portion or 1 is present in the vicinity of the compound represented by the general formula (I) having a low polarity. , 2-Pentanediol is likely to be present. However, diethylene glycol monobutyl ether and 1,2-pentanediol are compounds of which many molecules are represented by the general formula (I) compared to triethylene glycol monobutyl ether and 1,2-hexanediol depending on the size and structure. It exists in the vicinity. That is, the compound represented by the general formula (I) is covered with diethylene glycol monobutyl ether or 1,2-pentanediol. And the compound represented by general formula (I) is stabilized again by the hydrophilic part of diethylene glycol monobutyl ether or 1,2-pentanediol. For this reason, the compound represented by the general formula (I) penetrates deep into the recording medium, and the optical density decreases. Moreover, since a cluster is not formed, ozone resistance also falls.

  Furthermore, it was found that the ozone resistance and optical density of the image are insufficient when 1,2-heptanediol is used instead of triethylene glycol monobutyl ether and 1,2-hexanediol. About this reason, the present inventors guess as follows. 1,2-Heptanediol also has a hydrophilic part and a hydrophobic part in the molecule, but the hydrophobic part is larger than 1,2-hexanediol and its solubility in water is low. When the ink is applied to the recording medium and permeates, and liquid components such as water evaporate, they tend to be gathered due to the interaction of the hydrophobic portion of 1,2-heptanediol. It becomes difficult to exist in the vicinity of the represented compound. Therefore, it is difficult to form clusters, and the optical density is lowered and ozone resistance is considered to be insufficient.

  Next, the phenomenon that occurs when the compounds described in Patent Documents 1 and 2 are used in place of the compound represented by the general formula (I) and the mechanism thereof will be described. First, an ink using a combination of the compound described in Patent Document 1 (hereinafter referred to as “Compound B”), triethylene glycol monobutyl ether and 1,2-hexanediol will be described. As the liquid component such as water in the ink evaporates, triethylene glycol monobutyl ether or 1,2-hexanediol having a hydrophobic portion is likely to be present in the vicinity of the compound B. However, since compound B does not have a nitro moiety in its molecule, it has low polarity and is difficult to form a cluster. For this reason, the compound B penetrates deep into the recording medium. Furthermore, since it is difficult to form clusters, it is considered that the optical density is lowered and ozone resistance is insufficient.

  Next, an ink using a combination of the compound described in Patent Document 2 (hereinafter referred to as “Compound C”), triethylene glycol monobutyl ether and 1,2-hexanediol will be described. Since compound C has a nitrogen-containing heterocycle in the molecule, π electrons are delocalized in the molecule, and is more polar than the compound represented by formula (I). For this reason, in the ink, hydration water is strongly associated with the compound C and a large amount thereof exists. Thereby, even if liquid components such as water in the ink are evaporated, triethylene glycol monobutyl ether and 1,2-hexanediol are less likely to be present in the vicinity of the compound C. Therefore, it is considered that clusters are hardly formed, the optical density is lowered, and ozone resistance is insufficient.

<Ink>
Hereinafter, the components constituting the ink of the present invention suitable for inkjet and the physical properties of the ink will be described in detail.

(Color material)
The ink of the present invention contains a color material (dye) containing a compound represented by the following general formula (I). The content A (% by mass) of the compound represented by the general formula (I) in the ink is preferably 0.1% by mass or more and 10.0% by mass or less based on the total mass of the ink. More preferably, it is 0 mass% or more and 6.0 mass% or less.

  In general formula (I), M represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium each independently. Examples of the alkali metal include lithium, sodium, and potassium. Examples of organic ammonium include alkylamines having 1 to 3 carbon atoms such as methylamine and ethylamine; 1 to 4 carbon atoms such as monoethanolamine, diethanolamine, triethanolamine, monoisopropanolamine, diisopropanolamine, and triisopropanolamine. The following mono-, di- or trialkanolamines can be mentioned. In the present invention, it is preferable that M in the general formula (I) is sodium.

  When the suitable example of a compound represented by general formula (I) is represented by a free acid form, the example compounds 1 and 2 shown below can be mentioned. Of course, in the present invention, the compound represented by the general formula (I) is not limited to the exemplified compounds shown below as long as it is included in the structure of the general formula (I) and the definition thereof. In the present invention, Exemplified Compound 1 is preferable among the exemplified compounds shown below.

(Triethylene glycol monobutyl ether, 1,2-hexanediol)
The ink of the present invention contains a water-soluble organic solvent containing at least one of triethylene glycol monobutyl ether and 1,2-hexanediol. Triethylene glycol monobutyl ether and 1,2-hexanediol may be used in combination. Especially, since the ozone resistance of an image can be improved more, it is preferable to use triethylene glycol monobutyl ether. The total content (% by mass) of triethylene glycol monobutyl ether and 1,2-hexanediol in the ink is preferably 1.0% by mass or more and 30.0% by mass or less based on the total mass of the ink. . Moreover, it is more preferable that it is 2.0 mass% or more and 20.0 mass% or less.

  The total content B (mass%) of triethylene glycol monobutyl ether and 1,2-hexanediol is a mass ratio (B / A) to the content A (mass%) of the compound represented by the general formula (I). And it is preferably 0.5 times or more and 12.0 times or less. The content B (mass%) and the content A (mass%) are values based on the total mass of the ink. If B / A is less than 0.5 times, the effect of improving the ozone resistance of the image may not be sufficiently obtained. On the other hand, if B / A is more than 12.0 times, the effect of improving the optical density of the image may not be sufficiently obtained.

(Aqueous medium)
In the ink of the present invention, water or an aqueous medium that is a mixed solvent of water and a water-soluble organic solvent can be used. In the present invention, it is preferable to use an aqueous ink containing at least water as an aqueous medium. It is preferable to use deionized water (ion exchange water) as the water. The content (% by mass) of water in the ink is preferably 10.0% by mass or more and 90.0% by mass or less based on the total mass of the ink.

  The water-soluble organic solvent is not particularly limited as long as it is water-soluble. In addition to at least one of the above-mentioned triethylene glycol monobutyl ether and 1,2-hexanediol, alcohol, polyhydric alcohol, polyglycol, glycol ether, nitrogen-containing polar solvent, sulfur-containing polar solvent and the like can be used. The content (% by mass) of the water-soluble organic solvent in the ink is 5.0% by mass or more and 90.0% by mass or less, and further 10.0% by mass or more and 50.0% by mass or less based on the total mass of the ink. It is preferable that The content of the water-soluble organic solvent is a value including the contents of triethylene glycol monobutyl ether and 1,2-hexanediol. If the content of the water-soluble organic solvent is out of the above range, a high level of ink ejection stability may not be obtained sufficiently.

(Other additives)
In addition to the components described above, the ink of the present invention contains water-soluble organic compounds that are solid at room temperature, such as polyhydric alcohols such as trimethylolpropane and trimethylolethane, urea and derivatives thereof, as necessary. May be. Furthermore, the ink of the present invention contains a surfactant, a pH adjuster, a rust inhibitor, an antiseptic, an antifungal agent, an antioxidant, an anti-reduction agent, an evaporation accelerator, a chelating agent, and a water-soluble agent as necessary. Various additives such as a functional resin may be contained.

(Other inks)
In order to form a full-color image or the like, the ink of the present invention can be used in combination with another ink having a hue different from the ink of the present invention. Examples of the other ink include at least one ink selected from the group consisting of black ink, cyan ink, magenta ink, yellow ink, red ink, green ink, and blue ink. Further, a so-called light ink having substantially the same hue as these inks can be used in combination. The coloring material used for other inks and light inks may be a known dye or a newly synthesized dye.

(Ink physical properties)
The surface tension of the ink of the present invention at 25 ° C. is preferably 10 mN / m or more and 60 mN / m or less, more preferably 20 mN / m or more and 60 mN / m or less, and 30 mN / m or more and 40 mN / m or less. It is particularly preferred. By making the surface tension of the ink within the above-mentioned range, it is possible to effectively suppress the occurrence of ejection stagnation (displacement of ink landing point) due to wetting in the vicinity of the ejection port when applied to the ink jet system. . The surface tension of the ink can be adjusted by appropriately setting the content of a surfactant, a water-soluble organic solvent, or the like in the ink. In addition, it is preferable to adjust the viscosity of the ink so that good discharge characteristics can be obtained when discharging from the discharge port of the ink jet recording head. The viscosity of the ink of the present invention at 25 ° C. is preferably 1.0 mPa · s to 5.0 mPa · s, and more preferably 1.0 mPa · s to 3.0 mPa · s.

<Ink cartridge>
The ink cartridge of the present invention includes ink and an ink storage unit that stores the ink. And the ink accommodated in this ink accommodating part is the ink of this invention demonstrated above. FIG. 1 is a cross-sectional view schematically showing an embodiment of the ink cartridge of the present invention. As shown in FIG. 1, an ink supply port 12 for supplying ink to the recording head is provided on the bottom surface of the ink cartridge. The inside of the ink cartridge is an ink storage portion for storing ink. The ink storage portion is composed of an ink storage chamber 14 and an absorber storage chamber 16, which communicate with each other via a communication port 18. The absorber housing chamber 16 communicates with the ink supply port 12. The ink storage chamber 14 stores liquid ink 20, and the absorber storage chamber 16 stores absorbers 22 and 24 that hold the ink in an impregnated state. The ink storage unit may have a form in which the entire amount of ink stored is held by an absorber without having an ink storage chamber for storing liquid ink. Further, the ink storage portion may have a form that does not have an absorber and stores the entire amount of ink in a liquid state. Further, the ink cartridge may be configured to have an ink storage portion and a recording head.

<Inkjet recording method>
The ink jet recording method of the present invention is a method of recording an image on a recording medium by discharging the ink of the present invention described above from an ink jet recording head. Examples of the method for ejecting ink include a method for imparting mechanical energy to the ink and a method for imparting thermal energy to the ink. In the present invention, it is particularly preferable to employ a method in which thermal energy is applied to the ink and the ink is ejected. Other than using the ink of the present invention, the steps of the ink jet recording method may be known.

  2A and 2B are diagrams schematically showing an example of an ink jet recording apparatus used in the ink jet recording method of the present invention. FIG. 2A is a perspective view of a main part of the ink jet recording apparatus, and FIG. 2B is a perspective view of a head cartridge. It is. The ink jet recording apparatus is provided with a conveying means (not shown) for conveying the recording medium 32 and a carriage shaft 34. A head cartridge 36 can be mounted on the carriage shaft 34. The head cartridge 36 includes recording heads 38 and 40, and is configured such that an ink cartridge 42 is set. While the head cartridge 36 is conveyed along the carriage shaft 34 in the main scanning direction, ink (not shown) is ejected from the recording heads 38 and 40 toward the recording medium 32. Then, the recording medium 32 is conveyed in the sub-scanning direction by a conveying unit (not shown), whereby an image is recorded on the recording medium 32.

  EXAMPLES Hereinafter, although an Example and a comparative example are given and this invention is demonstrated further in detail, this invention is not limited at all by the following Example, unless the summary is exceeded. In addition, what is described as “parts” and “%” with respect to the component amounts is based on mass unless otherwise specified.

<Synthesis of coloring materials>
(Compound A)
With reference to the description in Patent Document 3, a compound represented by the following structural formula (1) was synthesized as a free acid form. Thereafter, ion exchange was performed according to a conventional method to obtain a sodium salt type compound (this compound is referred to as “compound A”).

(Compound B)
With reference to the description of Patent Document 1, a compound represented by the following structural formula (2) was synthesized as a free acid form. Thereafter, ion exchange was performed according to a conventional method to obtain a sodium salt type compound (this compound is referred to as “compound B”).

(Compound C)
With reference to the description in Patent Document 2, a compound represented by the following structural formula (3) was synthesized as a free acid form. Thereafter, ion exchange was performed according to a conventional method to obtain a sodium salt type compound (this compound is referred to as “compound C”).

<Preparation of ink>
Each component (unit:%) shown in the upper part of Table 1 was mixed and sufficiently stirred, and then each ink was prepared by pressure filtration with a filter having a pore size of 0.20 μm. “Acetylenol E100” (manufactured by Kawaken Fine Chemicals) in Table 1 is a trade name of a nonionic surfactant. In the lower part of Table 1, the content A (%) of the compound represented by the general formula (I) in the ink, triethylene glycol monobutyl ether and 1,2-hexanediol (referred to as “specific solvent”) Content B (%), as well as the value of B / A.

<Evaluation>
Each ink obtained above was filled in an ink cartridge and mounted on an ink jet recording apparatus (trade name “PIXUS iP8600”, manufactured by Canon Inc.) that discharges ink from the recording head by the action of thermal energy. In this embodiment, a solid image recorded by applying 2.5 pL of ink to a unit area of 1/2400 inch × 1/1200 inch is defined as “recording duty is 100%”. When evaluating the optical density and ozone resistance, the optical density was measured using a spectrophotometer (trade name “Spectrolino”, manufactured by Gretag Macbeth) under the conditions of light source: D50 and field of view: 2 °. The evaluation results are shown in Table 2.

(Optical density)
Using the above inkjet recording apparatus, the recording duty is set on the recording medium (glossy paper, product name “Canon Photo Paper / Glossy Pro [Platinum Grade]”, manufactured by Canon) in an environment of a temperature of 23 ° C. and a relative humidity of 55%. A solid image of 100% was recorded. The optical density of the solid image in the obtained recorded matter was measured. From the obtained optical density value, the optical density was evaluated according to the following evaluation criteria. In the present invention, according to the following evaluation criteria, “B” and “C” are unacceptable levels, and “AA” and “A” are acceptable levels.
AA: The optical density was 2.40 or more.
A: The optical density was 2.35 or more and less than 2.40.
B: The optical density was 2.30 or more and less than 2.35.
C: The optical density was less than 2.30.

(Ozone resistance)
Using the above inkjet recording apparatus, the recording duty is set on the recording medium (glossy paper, product name “Canon Photo Paper / Glossy Pro [Platinum Grade]”, manufactured by Canon) in an environment of a temperature of 23 ° C. and a relative humidity of 55%. A solid image of 50% was recorded. The optical density of the solid image in the obtained recorded matter was measured (optical density before the ozone resistance test). This recorded matter was placed in an ozone test apparatus (trade name “OMS-H”, manufactured by Suga Test Instruments Co., Ltd.), and ozone exposure was performed for 24 hours at a bath temperature of 23 ° C., a relative humidity of 50%, and an ozone gas concentration of 10 ppm. Thereafter, the optical density of the solid image in the recorded material was measured (optical density after the ozone resistance test). From the obtained optical density value before the ozone resistance test and the optical density value after the ozone resistance test, the residual ratio of the optical density = the optical density after the ozone resistance test / the optical density before the ozone resistance test × 100% The ozone resistance was evaluated according to the following evaluation criteria. The residual ratio of optical density was calculated for each of the black component, yellow component, magenta component, and cyan component measured using the spectrophotometer, and the lowest value was used for evaluation. In the present invention, “C” is an unacceptable level and “AA”, “A”, and “B” are acceptable levels according to the following evaluation criteria.
AA: The residual ratio of the optical density was 74% or more.
A: The residual ratio of the optical density was 72% or more and less than 74%.
B: The residual ratio of the optical density was 70% or more and less than 72%.
C: The residual ratio of the optical density was less than 70%.

Claims (5)

A water-based ink containing a coloring material and a water-soluble organic solvent,
The colorant contains a compound represented by the following general formula (I):
The ink, wherein the water-soluble organic solvent contains at least one of triethylene glycol monobutyl ether and 1,2-hexanediol.

(In the general formula (I), M independently represents a hydrogen atom, an alkali metal, ammonium, or organic ammonium)   Based on the total mass of the ink, the content B (% by mass) of the water-soluble organic solvent is a mass ratio (B / A) to the content A (% by mass) of the compound represented by the general formula (I). The ink according to claim 1, wherein the ink is 0.5 times or more and 12.0 times or less.   The ink according to claim 1, wherein the water-soluble organic solvent contains triethylene glycol monobutyl ether. An ink cartridge comprising ink and an ink containing portion for containing the ink,
The ink cartridge according to claim 1, wherein the ink is an ink according to claim 1. An inkjet recording method for recording an image on a recording medium by discharging ink from an inkjet recording head,
An ink jet recording method, wherein the ink is the ink according to any one of claims 1 to 3.

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