INK FOR INK JET RECORDING, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, AND INK JET RECORDING APPARATUS

摘要

Provided is an ink jet ink containing a coloring material having a buffer region in an ink use range, the ink jet ink being capable of suppressing the occurrence of the deterioration (dissolution) of a heating portion surface in contact with liquid; and the disconnection of wiring for applying a voltage to a heating portion even when long term continuous printing is performed. The ink jet ink is used for an ink jet recording apparatus equipped with a recording head having a heating portion surface in contact with liquid comprising a metal and/or a metal oxide. The ink jet ink contains a coloring material in a content (mass%) of 3 mass% or more with respect to the total mass of the ink jet ink. The coloring material is a colorant having a buffer region in an ink use range, and comprises a compound represented by the following general formula (I) and/or a compound represented by the following general formula (II).
General formula (II)
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒH(OCH 2 CH 2 ) p R 5