摘要:
In an ink composition comprising a water-soluble dye or a pigment, dissolved or dispersed in an aqueous medium, the ink composition fulfills at least one of the following conditions 1 to 6 in respect of the concentration of metals contained therein: Condition 1; Barium concentration, not more than 4 ppm Condition 2; Zinc concentration, less than 1 ppm Condition 3; Nickel concentration, less than 0.05 ppm Condition 4; Strontium concentration, less than 0.01 ppm Condition 5; Iron concentration, not more than 0.3 ppm Condition 6; Silicon concentration, less than 1.5 ppm.
摘要:
A water-based black recording ink comprises an aqueous medium and a colorant dissolved or dispersed therein, where the colorant comprises a first colorant, having a transmission color having L* of 4 or below and C*ab of 25 or below in the L*a*b* color system, and a second colorant, and a closed angle between the hue angle of the first colorant and that of the second colorant on the a*-b* plane in the L*a*b* color system is 90.degree. or greater.
摘要翻译:水性黑色记录油墨包含水性介质和溶解或分散在其中的着色剂,其中着色剂包括第一着色剂,其L / 4或更低的透光颜色和L *为25以下的C * a * b *颜色系统和第二着色剂,并且L * a * b *颜色系统中的a * -b *平面上的第一着色剂和第二着色剂的色调角之间的闭合角为90° DEG以上。
摘要:
A recording ink composition comprises pure water, a water-soluble dye, a polyvalent alcohol, and phosphoric acid. When iron is contained as an impurity in the recording ink composition, the iron and phosphoric acid form a ferric (III) phosphato complex ion represented by �Fe(HP0.sub.4)(H.sub.2 O)!.sup.+. Owing to the formation of the complex ion, the recording ink composition is prevented from discoloration which would be otherwise caused by iron ion. Further, the recording ink composition is prevented from formation and deposition of iron compounds. Therefore, the obtained ink has an excellent color tone, and the ink avoids blocking at a nozzle of a printing head or the like of an ink-jet printer.
摘要:
A water-based magenta ink composition comprises an aqueous medium and a magenta dye dissolved therein, which employs Color Index Number Acid Red 52 as the magenta dye and contains 5 to 15% by weight of a polyhydric alcohol alkyl ether having a vapor pressure of 0.1 mmHg or below at 20.degree. C.
摘要:
A water color ink for recording, including a yellow ink, a magenta ink and a cyan ink, wherein the yellow ink contains color index number Acid Yellow 23 at 0.7 to 3 wt %, the magenta ink contains a dye mixture of color index number Acid Red 52 and color index number Acid Red 289 at 0.7 to 3 wt %, and the cyan ink contains color index number Acid Blue 9 at 0.7 to 3 wt %, and an ink-jet recording process using the same.
摘要:
An inventive ink comprises a water-soluble dye or a pigment as a coloring agent, 5 to 15% by weight of polyvalent alcohol monoalkyl ether selected from the group consisting of tetraethylene glycol monoalkyl ethers and pentaethylene glycol monoalkyl ethers, 5 to 50% by weight of polyvalent alcohol, and pure water. When recording is performed in accordance with the ink-jet recording system by using the inventive ink, an excellent result is obtained from any viewpoint concerning, for example, the recording characteristic, the fixation to an objective recording material, the quick drying characteristic, the printing quality characteristic, and the low odor characteristic. The inventive ink is useful as an ink to be used for ink-jet recording apparatuses based on various recording systems, making it possible to obtain an excellent recording result.
摘要:
A water-based magenta ink composition comprising an aqueous medium, a magenta dye dissolved therein and a pH adjuster, where, as the magenta dye, Color Index Number Acid Red 52 is used; as the pH adjuster, a basic organic compound is used; and the pH of the water-based magenta composition is adjusted to a value within the range of from 8 to 10.
摘要:
A water-based recording magenta ink composition comprises a magenta dye dissolved in a mixed solvent of water and a water-soluble organic solvent. The magenta dye comprises Color Index Number Acid Red 52 and the water-soluble organic solvent comprises at least one of 2-pyrrolidinone, .beta.-thiodiglycol and 1,5-pentanediol.
摘要:
A water base ink set for ink-jet recording includes a black ink containing a negatively charged self-dispersing black pigment and a water-soluble polyvalent alcohol alkyl ether; and a yellow ink containing a water-soluble anionic yellow dye in which a number of counter ion or ions per one molecule is not more than 3, a surfactant based on amine represented by the following general formula (1), and a water-soluble polyvalent alcohol alkyl ether; R—N—(CH2CH2O)xH(CH2CH2O)yH (1) wherein R represents an alkyl group or an alkenyl group having a number of carbons of 8 to 18, and x+y is 5 to 15. Accordingly, the water ink set in which no bleeding or no coagulation of the pigment occur is provided.
摘要:
A water-based ink composition having an aqueous medium, a dye dissolved therein, and a pH adjuster. The pH adjuster may be any one of the following (1) to (4): (1) triethanolamine and triethanolamine hydrochloride; (2) triethanolamine and hydrochloric acid; (3) tris (hydroxymethyl) aminomethane and tris (hydroxymethyl) aminomethane hydrochloride; and (4) tris (hydroxymethyl) aminomethane and hydrochloric acid; and is used to adjust the pH of the water-based ink composition to a value within the range of from 8 to 10.