Patent ID: 6367923
Filing Date: 2002-04-09
Classification: B41J,C09D

Abstract:
A process for printing on a recording medium, comprising the steps of:(i) applying an ink on the recording medium with an ink-jet method; and (ii) applying a treating liquid to the recording medium, wherein the ink comprises at least a self-dispersing pigment having a first group with a polarity as a coloring material, and the treating liquid comprises a surfactant having in a molecule thereof only one second group with an opposite polarity to that of the first group of the self-dispersing pigment, and the self-dispersing pigment and the surfactant forming a combined product when the ink and the treating liquid are mixed on the recording medium, and wherein the steps (i) and (ii) are performed so that the combined product of the self-dispersing pigment and the surfactant is formed on the recording medium.