US 9,868,298 B2 · Image-forming method

Abstract

An inkjet recording method comprising: shooting to a recording medium an active-light-ray-curable inkjet ink including a photopolymerizable compound, a wax, a photopolymerization initiator, and a coloring material, and that undergoes reversible sol-gel phase transition relative to temperature; and curing the ink by irradiating an active light ray to the ink that has been shot to the recording medium, wherein the ink including a (meta) acrylate compound (B) having a molecular weight of 300-1500 and a ClogP value within the range 4.0 to 7.0, the wax content being 1.0-10 percent by mass of the total mass of the ink, and the temperature of the recording medium at active light ray irradiation being set such that the saturation solubility of the wax with respect to the ink constitutes 0.5 percent by mass or less. According to this image-forming method, blooming is suppressed.

Claims8

Dependent claims

An image forming method being an inkjet recording method comprising:

ejecting to a recording medium an actinic radiation-curable inkjet ink including a photopolymerizable compound, a wax, a photopolymerization initiator, and a colorant, the actinic radiation-curable inkjet ink configured to undergo temperature-induced reversible sol-gel phase transition;
and
curing the ink ejected to the recording medium with actinic radiation,
wherein the photopolymerizable compound includes a (meth)acrylate compound B having a molecular weight in a range from 300 to 1,500 and having a ClogP value in a range from 4.0 to 7.0;
the wax is contained in an amount of 1.0 to 10 wt % relative to a total weight of the ink;
and
a temperature of the recording medium during application of the actinic radiation is set at a temperature such that the wax has a saturation solubility in the ink of 0.5 wt % or less.

4 more elements

Dependencies are inferred from the claim text.

Image-forming method

Life of this patent

Image-forming method

Life of this patent

Abstract

Claims8