Ink, inkjet recording method, inkjet recording apparatus, and recorded matter
Provided is an ink containing water, a plurality of organic solvents, a color material, and resin particles, wherein the plurality of organic solvents contain at least one compound having a hydrogen bond term δH, which is a Hansen solubility parameter, of 4.1 MPa 1/2 or higher but 9.5 MPa 1/2 or lower and a boiling point of 170° C. or higher and at least one diol compound containing 3 or 4 carbon atoms.
1. An ink, comprising:
water;
a plurality of organic solvents;
a color material; and
resin particles,
wherein the plurality of organic solvents comprise:
a first compound, which has a hydrogen bond term δH, which is a Hansen solubility parameter, of 4.1 MPa 1/2 or higher but 9.5 MPa 1/2 or lower and a boiling point of 170° C. or higher;
a diol compound that comprises 3 or 4 carbon atoms; and
a second compound having an alkoxy group, where the second compound comprises 3-methoxy-3-methyl-1-butanol.
2. The ink according to claim 1 ,
wherein the diol compound comprises at least one selected from the group consisting of 1,2-propanediol, 1,3-propanediol, 1,2-butanediol, and 2,3-butanediol.
3. The ink according to claim 1 ,
wherein a ratio Fh of the first compound is 16% or higher but 25% or lower, wherein the ratio Fh is represented by a mathematical formula 1:
Fh (%)=[δ H /(δ D+δP+δH )]×100 <Mathematical formula 1>
wherein δD represents a dispersion term, which is a Hansen solubility parameter, and δP represents a polarity term, which is a Hansen solubility parameter.
4. The ink according to claim 1 ,
wherein the first compound comprises at least one selected from the group consisting of 3-methoxy-N,N-dimethylpropionamide, 3-butoxy-N,N-dimethylpropionamide, diethylene glycol diethylether, tetramethylurea, 2-pyrrolidone, 1-n-octyl-2-pyrrolidone, and 1,3-dimethyl-2-imidazolidinone.
5. The ink according to claim 1 ,
wherein a content of the first compound is greater than or equal to 10% by mass but less than or equal to 50% by mass of a total content of the plurality of organic solvents.
6. The ink according to claim 1 ,
wherein a boiling point of the plurality of organic solvents is 170° C. or higher but 250° C. or lower.
7. The ink according to claim 1 ,
wherein a total content of the plurality of organic solvents is greater than or equal to 20% by mass but less than or equal to 70% by mass.
8. The ink according to claim 1 ,
wherein the resin particles comprise polyurethane resin particles.
9. An inkjet recording method, comprising:
applying a stimulus to an ink to fly the ink and record an image over a base material,
wherein the ink comprises:
water;
a plurality of organic solvents;
a color material; and
resin particles,
wherein the plurality of organic solvents comprise:
a first compound, which has a hydrogen bond term δH, which is a Hansen solubility parameter, of 4.1 MPa 1/2 or higher but 9.5 MPa 1/2 or lower and a boiling point of 170° C. or higher;
a diol compound that comprises 3 or 4 carbon atoms; and
a second compound having an alkoxy group, where the second compound comprises 3-methoxy-3-methyl-1-butanol.
10. The inkjet recording method according to claim 9 , further comprising:
heating the base material over which the image is recorded.
11. The inkjet recording method according to claim 9 ,
wherein the base material is an impermeable base material that comprises an acrylic resin coating layer.
12. The inkjet recording method according to claim 9 ,
wherein the base material is a polyvinyl chloride film or a polyethylene terephthalate film.
13. An inkjet recording apparatus, comprising
an ink flying unit configured to apply a stimulus to an ink to fly the ink and record an image over a base material,
wherein the ink comprises:
water;
a plurality of organic solvents;
a color material; and
resin particles,
wherein the plurality of organic solvents comprise:
a first compound, which has a hydrogen bond term δH, which is a Hansen solubility parameter, of 4.1 MPa 1/2 or higher but 9.5 MPa 1/2 or lower and a boiling point of 170° C. or higher;
a diol compound that comprises 3 or 4 carbon atoms; and
a second compound having an alkoxy group, where the second compound comprises 3-methoxy-3-methyl-1-butanol.
14. The inkjet recording apparatus according to claim 13 , further comprising:
a heating unit configured to heat the base material over which the image is recorded.
15. The inkjet recording apparatus according to claim 13 ,
wherein the base material is an impermeable base material that comprises an acrylic resin coating layer.
16. The inkjet recording apparatus according to claim 13 ,
wherein the base material is a polyvinyl chloride film or a polyethylene terephthalate film.
17. A recorded matter, comprising:
a base material; and
an image recorded over the base material with the ink according to claim 1 .
18. The ink according to claim 1 , wherein a content of the second compound is greater than or equal to 1% by mass but less than or equal to 10% by mass of a total content of the plurality of organic solvents.
19. The ink according to claim 1 , wherein a content of the second compound is greater than or equal to 2% by mass but less than or equal to 6% by mass of a total content of the plurality of organic solvents.
20. The ink according to claim 1 ,
wherein a content of the first compound is greater than or equal to 10% by mass but less than or equal to 50% by mass of a total content of the plurality of organic solvents,
a content of the diol compound is greater than or equal to 5% by mass but less than or equal to 40% by mass of the total content of the plurality of organic solvents, and
a content of the second compound is greater than or equal to 1% by mass but less than or equal to 10% by mass of the total content of the plurality of organic solvents.