摘要:
There is provided an ink composition that can realize high-quality images free from white streaks or roughness even in low resolution when printing paper for running-on such as art paper is used. The ink composition comprises at least a colorant, water, an alcohol solvent, and a surfactant, wherein the alcohol solvent comprises a sparingly water soluble alkanediol, a water soluble alkanediol, and a water soluble alkanetriol.
摘要:
This invention provides a magenta ink composition that, when recorded, is excellent in color development, graininess, and gloss, is less likely to cause clogging in an ink jet recording head, and is excellent in color reproduction in a high-chroma and high-lightness red region. The magenta ink composition has an L* value of not less than 60 and a b* value of not more than −17 when the a* value in CIE standard calculated from a visible absorption spectrum in a not more than 10000-fold diluted aqueous solution is 80.
摘要:
There is provided an ink set with which agglomeration of ink is suppressed, images free from white streaks or roughness can be provided even when printed at a low resolution, and good images, in particular, images having a good hue can be provided.An ink set is used for an ink jet recording method, the ink set at least including an yellow ink composition, a magenta ink composition, and a cyan ink composition, wherein each ink composition at least contains a pigment, water, a water-soluble alcohol solvent, a slightly water-soluble alcohol solvent, and a surfactant; and the magenta ink composition contains, as the pigment, a solid solution between C.I. Pigment Red 202 and γ-type C.I. Pigment Violet 19.
摘要:
An ink set, including at least three colors of ink consisting of a yellow ink, in which the hue angle ∠H° defined in the CIELAB color space on a recording medium is within the range of about 80° C. to about 110° C., magenta ink, in which the hue angle ∠H° is within the range of about 330° to about 360°, and a cyan ink, in which the hue angle ∠H° is within the range of about 230° to about 260°, and the following ink (A) and the following ink (B): ink (A): ink in which the hue angle ∠H° is within the range of about 0° to about 80°; and, ink (B): ink in which the hue angle ∠H° is within the range of about 0° to about 80° (wherein, the ink (A) has higher chroma and lower brightness than the magenta ink, the ink (B) has higher chroma and higher brightness than the magenta ink and has higher chroma and lower brightness than the yellow ink, the hue angle (∠H°) is determined according to ∠H°=tan−1(b*/a*) +180 (when a* 0), and a* and b* represent a perceptive chromaticity index in the CIELAB color space).
摘要:
There is provided an ink composition for ink jet recording, which can yield images having excellent gloss with good color reproduction even on various recording media having a low level of water absorption, especially synthetic paper and printing paper for running-on. The ink composition for ink jet recording comprises a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water-soluble 1,2-alkanediol, a poor water-soluble 1,2-alkanediol, and a poor water-soluble both terminal alkanediol, and the alkanediol satisfies a requirement on a weight basis of A:(B+C)=2:1 to 2:3 wherein A represents the content of the water-soluble 1,2-alkanediol in the alkanediol; B represents the content of the poor water-soluble 1,2-alkanediol in the alkanediol; and C represents the content of the poor water-soluble both terminal alkanediol in the alkanediol.
摘要:
Disclosed is an ink composition for ink jet recording, which possesses excellent gloss and good color reproducibility on various recording media, especially printing paper for running-on. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a water insoluble both terminal alkanediol.
摘要:
There is provided an ink composition that, even on various recording media, especially gloss paper of a printing paper base, can yield an image having excellent gloss, can realize good recovery from clogging and handleability of recorded matter, and, at the same time, can realize excellent ejection stability and color reproduction. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a water soluble alkanediol having a hydroxyl group at both ends of its main chain, and the surfactant is a polyorganosiloxane.
摘要:
There is provided an ink composition for ink jet recording that, even on printing paper for running-on, can realize excellent gloss and good color reproduction and, at the same time, is excellent in ejection stability and recovery from clogging. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a slightly water soluble 1,2-alkanediol, and the surfactant is a polyorganosiloxane.
摘要:
An ink set including at least three colors of inks of yellow ink with a hue angle ∠H°, as defined in CIELAB color space on a recording medium, in the range of about 80° to about 110°, magenta ink with a hue angle ∠H° in the range of about 330° to about 360°, and cyan ink with a hue angle ∠H° in the range of about 230° to about 260°, and the following ink (A) and ink (B): ink (A): ink with a hue angle ∠H° in the range of about 0° to about 80°; and ink (B): ink with a hue angle ∠H° in the range of about 0° to about 80° (where the ink (A) has higher saturation and lower brightness than the magenta ink, and the ink (B) has higher saturation and higher brightness than the magenta ink and higher saturation and lower brightness than the yellow ink, and the hue angle (∠H°) is determined as hue angle ∠H°=tan−1(b*/a*)+180 (when a* 0), a* and b* representing the perceived chromaticity index as defined in CIELAB color space).
摘要:
There is provided an ink composition that, even on various recording media, especially gloss paper of a printing paper base, can yield an image having excellent gloss, can realize good recovery from clogging and handleability of recorded matter, and, at the same time, can realize excellent ejection stability and color reproduction. The ink composition for ink jet recording comprises at least a colorant, water, an alkanediol, and a surfactant, wherein the alkanediol comprises a water soluble 1,2-alkanediol and a water soluble alkanediol having a hydroxyl group at both ends of its main chain, and the surfactant is a polyorganosiloxane.