Back to results
US 2020/0048482 A1Published application
Ink, ink container, inkjet recording method, inkjet recording device, and recorded matter
OwnerSatoyuki Sekiguchi, Daisuke Asahina +1inventors
InventorsSatoyuki Sekiguchi, Daisuke Asahina, Yuusuke Fujita
Life of this patent
Estimating the term…
Abstract
An ink includes a solvent and a resin, wherein the storage elastic modulus G1 of an ink film obtained by drying the ink is 2.0×108-5.0×108 Pa at 20 degrees C. as measured by a dynamic viscoelasticity measuring method and the ratio (G2/G1) of the storage elastic modulus G1 to the storage elastic modulus G2 of the ink film measured at 80 degrees C. by the dynamic viscoelasticity measuring method is 0.30-0.85.
Claims14
1:
- An ink comprising:
- a solvent;
- and
- a resin,
- wherein a ratio of a tetrahydrofuran soluble portion in the resin present in the ink film is 20 to 50 percent by mass to the resin present in the ink film at room temperature and a glass transition temperature of the tetrahydrofuran soluble portion is −20 to 20 degrees C. as measured by differential scanning calorimetry.
2 more elements
2:
- The ink according to claim 1, wherein a storage elastic modulus G3 of an ink film obtained by drying the ink is 1.0×109 Pa or greater at −20 degrees C. as measured by a dynamic viscoelasticity measuring method.
3:
- The ink according to claim 2, wherein a storage elastic modulus G3 of the ink film at −20 degrees C. as measured by the dynamic viscoelasticity measuring method is 4.0×108 Pa to less than 1.0×109 Pa and a storage elastic modulus G4 of the ink film at −40 degrees C. as measured by the dynamic viscoelasticity measuring method is 1.0×109 Pa or greater.
(canceled)
5:
- The ink according to claim 1, wherein a mass average molecular mass of a tetrahydrofuran soluble portion of the resin present in the ink film is 200,000-900,000 as measured by gel permeation chromatography.
6:
- The ink according to claim 1, wherein a tetrahydrofuran insoluble portion of the resin present in the ink film is cross-linked.
7:
- The ink according to claim 1, wherein the resin includes a resin particle including an acrylic resin or a styrene resin.
8:
- The ink according to claim 1, wherein the resin includes a structure derived from a reactive emulsifier.
9:
- An ink container comprising:
- the ink of claim 1;
- and
- an ink accommodating unit to accommodate the ink of claim 1.
1 more element
10:
- An inkjet recording method comprising:
- discharging the ink of claim 1 from nozzles of a recording head;
- and
- applying the ink to a recording medium for recording.
1 more element
11:
- An inkjet recording device comprising:
- the ink container of claim 9;
- and
- a recording head configured to discharge ink droplets.
1 more element
12:
- Recorded matter comprising:
- a recording medium;
- and
- an image formed on the recording medium with the ink of claim 1.
1 more element
13:
- The ink according to claim 1, further comprising a pigment, wherein a particle diameter of the pigment is from 20 to 500 nm.
14:
- The ink according to claim 1, wherein a surface tension of the ink is 35 mN/s or less.
Dependencies are inferred from the claim text.