Patent ID: 7950793
Filing Date: 2011-05-31
Classification: B41J,C09D

Abstract:
1. An inkjet recording method comprising: performing inkjet recording alternately using a dye ink and a pigment ink through one inkjet head, wherein the dye ink and the pigment ink have respectively a viscosity at 25° C. of 5 mPa·s or more and the difference between the viscosity of the dye ink and the viscosity of the pigment ink is 3 mPa·s or less, wherein pH of the dye ink (pH B) is higher than pH of the pigment ink (pH A), wherein the difference (pH B-pH A) between pH of the pigment ink (pH A) and pH of the dye ink (pH B) is from 1 to 2, wherein the dye ink and the pigment ink each has an alkaline pH, and wherein the pigment ink has pH buffer properties in a pH region of 6 to 9.