| abstract |
PROBLEM TO BE SOLVED: To provide an actinic ray curable ink jet ink composition having excellent character quality, no color mixing, and capable of recording a high-definition image very stably even under various printing environments, and the same An image forming method and an ink jet recording apparatus are provided. SOLUTION: The photoinitiator contains a sulfonium salt (compound A) that does not generate benzene upon irradiation with actinic rays, and has at least one hydroxyl group, optionally substituted aralkyloxy group or alkoxy group as a substituent. An actinic ray curable inkjet ink composition comprising at least one compound selected from a polycyclic aromatic compound, a carbazole derivative and a thioxanthone derivative (compound B), and an image forming method and an inkjet using the same Recording device. [Selection figure] None |