摘要 |
An inkjet recording ink set including: a black ink; and color inks composed of a cyan ink, a magenta ink and a yellow ink, wherein the black ink contains a water-soluble solvent, a surfactant, water, and colored polymer emulsion particles obtained by dispersing, in water, carbon black coated with a vinyl polymer or a polyester polymer, wherein the cyan ink, the magenta ink and the yellow ink each contain a corresponding color dye, a water-soluble solvent, and water, and wherein an amount S of the water-soluble solvent contained in each color ink occupies 40% by mass or more of a total amount of each color ink, a ratio (S/W) of the amount S of the water-soluble solvent to an amount W of the water contained in each color ink is in the range of 0.7 to 1.6, and each color ink does not have a flash point. |
申请人 |
RICOH COMPANY, LTD.;MATSUYAMA, AKIHIKO;BANNAI, AKIKO;NAGAI, KIYOFUMI |
发明人 |
MATSUYAMA, AKIHIKO;BANNAI, AKIKO;NAGAI, KIYOFUMI |