PIGMENT INK, INK SET, INK JET RECORDING METHOD, INK CARTRIDGE, RECORDING UNIT, INK JET RECORDING APPARATUS, AND IMAGE FORMING METHOD

摘要

This invention provides a pigment ink for use in an ink jet recording apparatus in which a pigment ink delivery port and a delivery port for at least one reactive ink for unstabilizing the dispersed state of a pigment in the pigment ink are capped with the same cap and the cap is provided with elimination means for eliminating ink within the cap. The pigment ink can simultaneously realize bleeding resistance and reliability. When the pigment ink is mixed with an equal volume of the reactive ink, X and Y have a specific relationship wherein Y represents the percentage viscosity increase by mixing, %; and X represents the distance between the pigment ink delivery port and the reactive ink delivery port, mm, provided that X > 0.