| 摘要 |
PROBLEM TO BE SOLVED: To prevent bleeding by giving a treating liquid for generating disperse damage at aqueous coloring material dispersion ink and giving a treating liquid for generating aggregation to coloring material water solution ink, thereby obtaining high water resistance and high color developability. SOLUTION: Treating liquid A for generating disperse damage is given to aqueous coloring material dispersion ink, and treating liquid B for generating aggregate is given to coloring material water solution ink. The liquid A contains cationic substance of acid water solution or inorganic metal salt solution and the liquid B contains polyallylamine or cationic surfactant and cationic substance of polyallylamine. A recording head unit fixes a treating liquid tip 301 for black ink, treating liquid tip 302 for yellow, magenta and cyan inks, ink tip 303 for black ink, and yellow, magenta and cyan ink tips 304, 305, 306 of integral structure to a frame 300. |
