JP2009173853A - Ink set for inkjet recording and inkjet recording method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a five color ink set for inkjet recording achieving not only light fastness and water resistance but a good image, an image with a good hue in particular. <P>SOLUTION: The five color ink set for inkjet recording comprises a cyan ink composition containing C.I. Pigment Blue 15:3 or C.I. Pigment Blue 15:4, a magenta ink composition containing C.I. Pigment Red 122, C.I. Pigment Red 202, C.I. Pigment Red 209 or C.I. Pigment Violet 19, a yellow ink composition containing C.I. Pigment Yellow 213, a green ink composition containing C.I. Pigment Green 7 or C.I. Pigment Green 36, and an orange ink composition containing C.I. Pigment Orange 64, C.I. Pigment Orange 43 or C.I. Pigment Orange 71. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

Background of the Invention

The present invention relates to an ink set comprising a cyan ink composition, a yellow ink composition, a magenta ink composition, a green ink composition, and an orange ink composition used in an ink jet recording method.

BACKGROUND ART An ink jet recording method is a printing method in which printing is performed by causing droplets of an ink composition to fly and adhere to a recording medium such as paper. This method has a feature that a high-resolution and high-quality image can be printed at a high speed with a relatively inexpensive apparatus.

  Ink compositions used for inkjet recording generally contain water as a main component and a coloring component and a wetting agent such as glycerin for the purpose of preventing clogging. As the colorant used in the ink composition for ink jet recording, many water-soluble dyes are used because of the high saturation of the colorant, the rich variety of colorants that can be used, and the solubility in water. Yes.

  However, on the other hand, the dye may be inferior in various properties such as light resistance and water resistance, and the printed matter printed with the dye ink composition is inferior in light resistance and water resistance. The water resistance is improved by the ink jet recording paper having an ink absorbing layer, but it is still not sufficient for plain paper.

  Pigments are superior in light resistance and water resistance compared to dyes. In recent years, the use of pigments as a colorant for ink compositions for ink jet recording has been studied for the purpose of improving light resistance and water resistance. Here, since the pigment is generally insoluble in water, when the pigment is used in the water-based ink composition, the pigment is mixed with a resin called a dispersant and the like, and after being stably dispersed in water, the ink composition is used. Need to be prepared.

  Further, when considering the use of a pigment as a colorant for an ink jet recording ink, the pigment is superior in light resistance and water resistance compared to the dye, but there are fewer types of usable colorants than the dye. When actually used as an ink for ink jet recording, it is necessary to sufficiently study hue as well as light resistance and water resistance. For example, JP 2000-34080 A (Patent Document 1) proposes a yellow ink composition in which a specific pigment having excellent light resistance and two specific pigments having excellent color developability are combined. Japanese Patent Application Laid-Open No. 10-120956 (Patent Document 2) discloses a good image in addition to light resistance and water resistance by using an ink set in which cyan, magenta, and yellow ink compositions containing specific pigments are combined. In particular, it has been proposed that an image with a particularly favorable hue can be realized.

  Furthermore, in WO1999 / 005230 (Patent Document 3), an ink set is a combination of a cyan ink composition, a magenta ink composition, a yellow ink composition and a black ink composition, and an orange ink composition and a green ink composition. Accordingly, it has been proposed that in addition to light resistance and water resistance, it is possible to realize a good image, in particular, a good hue image.

Japanese Patent Laid-Open No. 2006-283017 (Patent Document 4) discloses a first ink having a maximum absorption wavelength in a region of 450 nm or more and less than 500 nm and a second ink having a maximum absorption wavelength in a region of 500 nm or more and 570 nm or less. B / A, where A is the maximum absorbance and B is the minimum absorbance when the absorbances of the first ink and the second ink in the region of 450 nm to 570 nm are combined. By forming an image using an ink set having a value of 0.7 or more and 1.0 or less, it is possible to expand the color developability and color reproduction range, particularly the color reproduction of the red region, It has been proposed that an image expressing good gradation can be formed.
JP 2000-34080 A JP-A-10-120956 WO 1999/005230 Publication JP 2006-283017 A

Summary of the Invention

  In the color ink jet recording method, the present inventors have recently developed an ink set combining a yellow ink composition containing a specific pigment, a magenta ink composition, a cyan ink composition, a green ink composition, and an orange ink composition. As a result, it has been found that, without using a plurality of pigments as the yellow ink pigment, in addition to light resistance and water resistance, it is possible to realize a good image, particularly an image of a good hue. The present invention is based on these findings.

  Accordingly, an object of the present invention is to provide an ink set for ink jet recording which can realize a good image, particularly a good hue image, in addition to light resistance and water resistance.

The ink set for ink jet recording according to the present invention is an ink set for ink jet recording comprising a cyan ink composition, a magenta ink composition, a yellow ink composition, a green ink composition, and an orange ink composition,
The cyan ink composition contains C.I. I. Pigment blue 15: 3 and C.I. I. Pigment blue 15: 4, comprising at least one pigment selected from the group consisting of
The magenta ink composition contains C.I. I. Pigment red 122, C.I. I. Pigment red 202, C.I. I. Pigment red 209, and C.I. I. The yellow ink composition contains at least one pigment selected from the group consisting of CI Pigment Violet 19; I. Pigment Yellow 213, and the green ink composition contains C.I. I. Pigment green 7 and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Green 36, and the orange ink composition contains C.I. I. Pigment orange 64, C.I. I. Pigment orange 43, and C.I. I. The pigment comprises at least one pigment selected from the group consisting of CI Pigment Orange 71.

  An ink jet recording method according to the present invention is an ink jet recording method for performing printing by discharging a droplet of an ink composition and attaching the droplet to a recording medium, and includes at least one kind of ink contained in the ink set. An ink composition is used.

  According to the present invention, in addition to light resistance and water resistance, it is possible to realize a good image, particularly an image with a good hue.

Detailed description of the invention

  The ink set according to the present invention includes a cyan ink composition, a magenta ink composition, a yellow ink composition, a green ink composition, and an orange ink composition, and each ink composition includes a specific pigment as a colorant. It is what. Hereinafter, each ink composition constituting the ink set according to the present invention will be described.

Yellow ink composition The yellow ink composition used in the ink set according to the present invention contains C.I. I. Pigment Yellow 213 is included. By using this yellow ink composition containing a yellow pigment in combination with a magenta ink composition, a cyan ink composition, a green ink composition, and an orange ink composition described later, in addition to light resistance and water resistance, An image, particularly an image with a good hue can be realized.

  In particular, a plurality of yellow pigments, for example, yellow pigments having excellent light resistance (for example, CI Pigment Yellow 128 and CI Pigment Yellow 110) and yellow pigments having excellent color development properties (for example, CI Pigment) Even if the combination with yellow 74) is not used, C.I. I. If a yellow ink composition containing only Pigment Yellow 213 is used, it is surprising that an image with a particularly good hue can be obtained in addition to light resistance and water resistance, which is an advantage of the present invention. Further, in the present invention, since it is not necessary to use a yellow ink composition containing a plurality of pigments, there is an advantage that the ink composition can be easily adjusted and ink jet recording can be easily performed.

  The yellow ink composition used in the present invention comprises at least water together with the pigment. The amount of the pigment added to the ink composition may be appropriately determined within a range where an image having a good hue can be realized in addition to light resistance and water resistance, but is preferably, for example, 6% by weight or less.

  The pigment is preferably added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium using a dispersant or a surfactant. As a preferable dispersant, a dispersant commonly used for preparing a pigment dispersion, for example, a polymer dispersant can be used.

  Preferred examples of the polymer dispersant include synthetic polymers such as polyvinyl alcohols, polyvinylpyrrolidones, polyacrylic acid, acrylic acid / acrylonitrile copolymer, potassium acrylate / acrylonitrile copolymer, vinyl acetate / acrylic acid ester. Copolymer, acrylic resin such as acrylic acid / acrylic ester copolymer, styrene / acrylic acid copolymer, styrene / methacrylic acid copolymer, styrene / methacrylic acid / acrylic acid ester copolymer, styrene / Styrene-acrylic resins such as α-methylstyrene / acrylic acid copolymer, styrene / α-methylstyrene / acrylic acid / acrylic acid ester copolymer, styrene / maleic acid copolymer, styrene / maleic anhydride copolymer , Vinyl naphthalene / acrylic acid copolymer, vinyl Nilnaphthalene / maleic acid copolymer, and vinyl acetate / ethylene copolymer, vinyl acetate / fatty acid vinyl / ethylene copolymer, vinyl acetate / maleic acid ester copolymer, vinyl acetate / crotonic acid copolymer, vinyl acetate / Vinyl acetate copolymers such as acrylic acid copolymers and their salts. Among these, a copolymer of a monomer having a hydrophobic group and a monomer having a hydrophilic group, and a polymer comprising a monomer having both a hydrophobic group and a hydrophilic group in the molecular structure, such as styrene / acrylic An acid copolymer or a salt thereof is preferred.

  According to a preferred embodiment of the present invention, the yellow ink composition preferably comprises an organic solvent. This organic solvent is preferably a low boiling point organic solvent, and preferred examples thereof include methanol, ethanol, n-propyl alcohol, iso-propyl alcohol, n-butanol, sec-butanol, tert-butanol, iso-butanol, Examples thereof include n-pentanol. A monohydric alcohol is particularly preferable. The low boiling point organic solvent has an effect of shortening the drying time of the ink composition.

  According to a preferred embodiment of the present invention, the ink composition used in the present invention preferably further comprises a high boiling point organic solvent. Preferred examples of the high boiling point organic solvent agent include ethylene glycol, diethylene glycol, triethylene glycol, polyethylene glycol, polypropylene glycol, propylene glycol, butylene glycol, 1,2,6-hexanetriol, thioglycol, hexylene glycol, glycerin, Polyhydric alcohols such as trimethylolethane and trimethylolpropane, ethylene glycol monoethyl ether, ethylene glycol monobutyl ether, diethylene glycol monomethyl ether, diethylene glycol monoethyl ether, diethylene glycol monobutyl ether, triethylene glycol monomethyl ether, triethylene glycol monoethyl Ether, triethylene glycol monobutyl ether Alkyl ethers of polyhydric alcohols such as urea, 2-pyrrolidone, N- methyl-2-pyrrolidone, 1,3-dimethyl-2-imidazolidinone, triethanolamine and the like.

  The amount of the low-boiling organic solvent added is preferably 0.5 to 10% by weight of the ink composition, more preferably 1.5 to 6% by weight. The amount of the high-boiling organic solvent added is preferably 0.5 to 40% by weight of the ink composition, more preferably 2 to 20% by weight.

  According to a preferred embodiment of the present invention, the yellow ink composition according to the present invention can contain a surfactant. Examples of preferred surfactants include anionic surfactants (eg, sodium dodecyl benzene sulfonate, sodium laurate, ammonium salts of polyoxyethylene alkyl ether sulfates), non-ionic surfactants (eg, polyoxy Ethylene alkyl ether, polyoxyethylene alkyl ester, polyoxyethylene sorbitan fatty acid ester, polyoxyethylene alkylphenyl ether, polyoxyethylene alkylamine, polyoxyethylene alkylamide, etc.), and these may be used alone or in combination of two or more. Can be used. Also, acetylene glycol (olefin Y and Surfinol 82, 104, 440, 465, and 485 (all manufactured by Air Products and Chemicals Inc.)) can be used.

  Examples of more preferable surfactants include commercially available silicon surfactants BYK-347 or BYK-348 (both manufactured by Big Chemie Japan Co., Ltd.).

  In addition, you may add a pH adjuster, antiseptic | preservative, a fungicide, etc. as needed.

Magenta ink composition The magenta ink composition used in the ink set according to the present invention contains C.I. I. Pigment red 122, C.I. I. Pigment red 202, C.I. I. Pigment red 209, and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Violet 19. Among these pigments, C.I. I. Pigment Red 122 is preferably included. By using a magenta ink composition containing these specific magenta pigments in combination with the yellow ink composition, the cyan ink composition, the green ink composition, and the orange ink composition described later, in addition to light resistance and water resistance. Therefore, it is possible to realize a good image, particularly an image having a good hue.

  The magenta ink composition constituting the ink set according to the present invention comprises at least water together with the pigment. The amount of the pigment added to the ink composition may be appropriately determined within a range where an image having a good hue can be realized in addition to light resistance and water resistance, but is preferably, for example, 6% by weight or less.

  Further, the magenta ink composition is added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium with a dispersant or a surfactant, in the same manner as the yellow ink composition. Is preferred. As a preferable dispersant, a dispersant commonly used for preparing a pigment dispersion, for example, a polymer dispersant can be used.

  The magenta ink composition according to the present invention preferably contains an organic solvent, a surfactant, a pH adjuster, a preservative, an antifungal agent, and the like, as in the yellow ink composition. These specific examples and the addition amount thereof may be the same as those of the yellow ink composition.

Cyan ink composition for the ink set according to the cyan ink composition invention, as a colorant, C. I. Pigment blue 15: 3 and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Blue 15: 4. Among these pigments, C.I. I. Pigment Blue 15: 4 is preferably included. By using a cyan ink composition containing these specific cyan pigments in combination with the yellow ink composition, magenta ink composition, green ink composition, and orange ink composition described later, light resistance and water resistance can be improved. In addition, a good image, particularly an image with a good hue can be realized.

  The cyan ink composition constituting the ink set according to the present invention comprises at least water together with the pigment. The amount of the pigment added to the ink composition may be appropriately determined within a range where an image having a good hue can be realized in addition to light resistance and water resistance, but is preferably, for example, 6% by weight or less.

  The cyan ink composition is added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium with a dispersant or a surfactant, as in the yellow ink composition. Is preferred. As a preferable dispersant, a dispersant commonly used for preparing a pigment dispersion, for example, a polymer dispersant can be used.

  The cyan ink composition according to the present invention preferably contains an organic solvent, a surfactant, a pH adjuster, a preservative, a fungicide, and the like, as in the yellow ink composition. These specific examples and the addition amount thereof may be the same as those of the yellow ink composition.

Green ink composition The green ink composition used in the ink set according to the present invention contains C.I. I. Pigment green 7 and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Green 36. Among these pigments, C.I. I. It is preferable that the pigment green 36 is included. By using a green ink composition containing these specific green pigments in combination with the above yellow ink composition, magenta ink composition, cyan ink composition, and orange ink composition described later, light resistance and water resistance are improved. In addition, a good image, particularly an image with a good hue can be realized.

  The green ink composition constituting the ink set according to the present invention comprises at least water together with the pigment. The amount of the pigment added to the ink composition may be appropriately determined within a range where an image having a good hue can be realized in addition to light resistance and water resistance, but is preferably, for example, 6% by weight or less.

  The green ink composition is added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium with a dispersant or a surfactant, as in the yellow ink composition. Is preferred. As a preferable dispersant, a dispersant commonly used for preparing a pigment dispersion, for example, a polymer dispersant can be used.

  Further, the green ink composition according to the present invention preferably contains an organic solvent, a surfactant, a pH adjuster, an antiseptic, an antifungal agent and the like, like the above yellow ink composition. These specific examples and the addition amount thereof may be the same as those of the yellow ink composition.

Orange ink composition The orange ink composition used in the ink set according to the present invention contains C.I. I. Pigment orange 64, C.I. I. Pigment green 43, and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Green 71. Among these pigments, C.I. I. Pigment Orange 64 is preferably included. By using an orange ink composition containing these specific orange pigments in combination with the above yellow ink composition, magenta ink composition, cyan ink composition, and green ink composition, in addition to light resistance and water resistance, A good image, in particular, a good hue image can be realized.

  The orange ink composition constituting the ink set according to the present invention comprises at least water together with the pigment. The amount of the pigment added to the ink composition may be appropriately determined within a range where an image having a good hue can be realized in addition to light resistance and water resistance, but is preferably, for example, 6% by weight or less.

  In addition, the orange ink composition is added to the ink composition as a pigment dispersion obtained by dispersing the pigment in an aqueous medium with a dispersant or a surfactant, in the same manner as the yellow ink composition. Is preferred. As a preferable dispersant, a dispersant commonly used for preparing a pigment dispersion, for example, a polymer dispersant can be used.

  Further, the orange ink composition according to the present invention preferably contains an organic solvent, a surfactant, a pH adjuster, an antiseptic, an antifungal agent and the like, like the above yellow ink composition. These specific examples and the addition amount thereof may be the same as those of the yellow ink composition.

Ink Set The ink set according to the present invention is composed of the above ink compositions. In the present invention, it is preferable that the respective concentrations of the cyan pigment and the magenta pigment in the cyan ink composition and the magenta ink composition are smaller than the concentration of the yellow pigment in the yellow ink composition. By making the density of the cyan pigment and magenta pigment smaller than that of the yellow pigment, the color reproducibility of the image is further improved.

  In the present invention, the concentration of the magenta pigment in the magenta ink composition is greater than the concentration of the cyan pigment in the cyan ink composition, and the concentration of the yellow pigment in the yellow ink composition is magenta. It is preferable that the concentration is higher than the concentration of the magenta pigment in the ink composition. By increasing the pigment concentration in the order of yellow, magenta, orange or green, and cyan, even better color reproducibility can be realized.

  According to a preferred embodiment of the present invention, the ink set according to the present invention has a pigment concentration in all ink compositions of 6% by weight or less, and a pigment concentration (% by weight) in the cyan ink composition. The concentration of pigment in the ink composition (wt%), the concentration of pigment in the yellow ink composition (wt%), the concentration of pigment in the green ink composition (wt%), and the orange ink composition The ratio with the pigment concentration (% by weight) is 2.0 to 5.0: 2.5 to 5.5: 3.5 to 6.0: 2.0 to 5.0: 2.0 to 5 0.0 is preferred. More preferably, it is 2.5-5.0: 3.5-5.5: 4.0-6.0: 2.0-5.0: 2.0-5.0. According to this aspect, an image having a more improved hue can be realized.

  The ink set according to the present invention may be a color recording ink set including other ink compositions in addition to the above ink compositions. Other ink compositions are not particularly limited as long as they do not impair the effects of the ink set according to the present invention, and those used for ordinary ink jet recording can be used.

  As other color ink compositions, light cyan, light magenta, dark yellow, red, blue, violet, and the like can be included in the ink set. The “light magenta” and “light cyan” ink compositions are generally used for the purpose of improving the image quality of the printed image by density modulation, respectively, and the magenta ink composition and the cyan ink composition, respectively. Is an ink composition having a reduced viscosity. The “dark yellow” ink composition is a yellow ink that uses a color material (pigment) having lightness and saturation lower than those of the yellow ink composition for the purpose of improving color reproducibility for dark colors such as shadow portions. It is a composition. The “red”, “blue”, and “violet” ink compositions are ink compositions that are used as elements constituting intermediate colors of yellow, magenta, and cyan in order to improve the color reproduction range. .

  The ink set according to the present invention can be configured in the same manner as a conventionally known ink set, and can be used as various conventionally known inks for recording methods. In particular, in the present invention, a high-resolution and high-quality image can be printed at a high speed with a relatively inexpensive apparatus, so that a small droplet of ink is ejected and adhered to a recording medium such as paper. Therefore, it is suitable for an application for printing.

Inkjet recording method The inkjet recording method using the ink set according to the present invention is to perform printing by ejecting droplets of an ink composition and attaching the droplets to a heated recording medium. As an example of a method for ejecting droplets of each ink composition, for example, an electrostrictive element is used to convert an electrical signal into a mechanical signal, and ink stored in the nozzle head portion is intermittently ejected to record the surface of the recording medium. A method for recording characters and symbols on the surface of the recording medium, by rapidly heating the ink stored in the nozzle head part at a location very close to the ejection part, generating bubbles, and ejecting them intermittently by the volume expansion caused by the bubbles. There is a method of recording characters and symbols. According to a preferred aspect of the present invention, the ink set according to the present invention is preferably used in an ink jet recording method using an electrostrictive element. It is preferable that the ink composition droplets be ejected by a recording head that ejects ink droplets using the mechanical action of the piezoelectric element.

  The present invention also provides a recorded matter recorded by the above recording method.

  The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

Preparation of Ink Composition Each ink was prepared by mixing each component according to the composition shown in Table 1 below and filtering through a 10 μm membrane filter. The numerical values in the table represent the content (% by weight) in the ink.

Evaluation 1 : Color reproducibility Ink sets 1 to 10 were constituted as combinations shown in Table 3 below for the obtained ink compositions. About each ink set, the exclusive output pattern which consists of 400 patches was printed using the inkjet printer PX-G900 (made by Seiko Epson). The color of all the patches on the printed material was measured, and the volume of L ^* a ^* b ^* in 3D space was calculated. The calculated GumatVolume is dimensionless. The evaluation of color reproducibility was performed according to the following criteria based on the calculated GumatVolume value.
A: 830,000 or more B: 780,000 or more, less than 830,000 C: 730,000 or more, less than 780,000 D: less than 730,000 Evaluation results were as shown in Table 3 below.

Evaluation 2 : Light resistance in ink set An ink set was formed by combining the obtained ink compositions as shown in Table 3 below. For each ink set, a dedicated output pattern consisting of 400 patches was printed in the same manner as in Evaluation 1. The obtained printed material was put into a chamber of a light resistance tester (fluorescent lamp light resistance tester, manufactured by Suga Test Instruments Co., Ltd.) and left in an environment of 24 ° C. and 60% humidity for 40 days. The color of the patch was measured, and the volume of L ^* a ^* b ^* in 3D space was calculated. The calculated GumatVolume is dimensionless. The residual rate was calculated from the formula (1), and the determination was made based on the result based on the following evaluation criteria. The fluorescent light resistance tester used is composed of 60 fluorescent lamps, and can perform an exposure test by controlling the illuminance of the printed surface to 70,000 lux.
Residual rate = [1-{(GumatVolume (A) calculated in evaluation 1−GumatVolume (B) calculated in evaluation 2)) / GumatVolume (A) calculated in evaluation 1}] × 100 (1)
AA: Residual rate is 95% or more A: Residual rate is 90% or more B: Residual rate is 80% or more C: Residual rate is 70% or more Evaluation results are as shown in Table 3 below.

Claims (6)

An ink set for ink jet recording comprising a cyan ink composition, a magenta ink composition, a yellow ink composition, a green ink composition, and an orange ink composition,
The cyan ink composition contains C.I. I. Pigment blue 15: 3 and C.I. I. Pigment blue 15: 4, comprising at least one pigment selected from the group consisting of
The magenta ink composition contains C.I. I. Pigment red 122, C.I. I. Pigment red 202, C.I. I. Pigment red 209, and C.I. I. The yellow ink composition contains at least one pigment selected from the group consisting of CI Pigment Violet 19; I. Pigment Yellow 213, and the green ink composition contains C.I. I. Pigment green 7 and C.I. I. And at least one pigment selected from the group consisting of CI Pigment Green 36, and the orange ink composition contains C.I. I. Pigment orange 64, C.I. I. Pigment orange 43, and C.I. I. An ink set comprising at least one pigment selected from the group consisting of CI Pigment Orange 71.   2. The ink set according to claim 1, wherein respective concentrations of the cyan pigment and the magenta pigment in the cyan ink composition and the magenta ink composition are smaller than the concentration of the yellow pigment in the yellow ink composition. .   The concentration of the magenta pigment in the magenta ink composition is greater than the concentration of the cyan pigment in the cyan ink composition, and the concentration of the yellow pigment in the yellow ink composition is the magenta in the magenta ink composition. The ink set according to claim 1 or 2, wherein the ink set is larger than the concentration of the pigment.   The pigment concentration in all the ink compositions is 6% by weight or less, and the pigment concentration (wt%) in the cyan ink composition, the pigment concentration (wt%) in the magenta ink composition, and yellow The ratio of the pigment concentration (wt%) in the ink composition to the pigment concentration (wt%) in the green ink composition and the pigment concentration (wt%) in the orange ink composition is 2. It is 0-5.0: 2.5-5.5: 3.5-6.0: 2.0-5.0: 2.0-5.0, Any one of Claims 1-3. The ink set described in 1.   An inkjet recording method for performing printing by discharging droplets of an ink composition and attaching the droplets to a recording medium, wherein at least one type included in the ink set according to any one of claims 1 to 4 An ink jet recording method using the ink composition.   A recorded matter printed by the method according to claim 5.