Ink composition, ink jet recording apparatus, and ink jet recording system

摘要

An ink composition is used in an ink jet recording apparatus including a recording head that includes a nozzle plate having a nozzle aperture through which the ink composition is ejected, and a flow channel substrate having a communication hole acting as a flow channel through which the ink composition flows. The nozzle plate and the flow channel substrate are bonded together with an adhesive such that the communication hole communicates with the nozzle aperture. The ink composition contains a coloring material, an acetylene glycol-based surfactant having an HLB value of 9 or less, and at least one of the compounds expressed by general formula (1): R1O—(CH2—CH2—O)n—R2 or general formula (2): (R3)p—N-{L-(COOM)q}r.

主权项

1. An ink composition used for an ink jet recording apparatus including a recording head that includes a nozzle plate having a nozzle aperture through which the ink composition is ejected, and a flow channel substrate having a communication hole acting as a flow channel through which the ink composition flows, and that has a structure in which the nozzle plate and the flow channel substrate are bonded together with an adhesive such that the communication hole communicates with the nozzle aperture, the ink composition comprising:
a coloring material; an acetylene glycol-based surfactant having an HLB value of 9 or less; and at least one of compounds expressed by general Formula (1): R1O—(CH2—CH2—O)n—R2 and compounds expressed by general formula (2): (R3)p—N-{L-(COOM)q}r, wherein n represents an integer in the range of 4 to 8, R1 represents a component selected from the group consisting of hydrogen and alkyl groups having a carbon number in the range of 1 to 3, R2 represents an alkyl group having a carbon number in the range of 6 to 8, R3 represents a component selected from the group consisting of hydrogen, alkyl groups, aryl groups and heterocycles, L represents a divalent or higher-valent linking group, M represents a component selected from the group consisting of hydrogen, alkali metals, an ammonium group, protonated organic amines, nitrogen-containing heterocycles, and quaternary ammonium cations, or is not present when the COO group in general formula (2) acts as a counterion of the ammonium ion including the N of general formula (2), p represents an integer in the range of 0 to 4, q represents an integer of 1 or more, and r represents an integer in the range of 1 to 4, wherein p+r is 3 or 4, and when p+r is 4, N represents a nitrogen atom of a quaternary ammonium compound, and wherein when p is 2 or more, R3 may be the same as or different from each other, when q is 2 or more, M may be the same as or different from each other, and when r is 2 or more, L-(COOM)q may be the same as or different from each other.