| abstract |
An ink jet image forming method, wherein an ink is applied to plain paper in a fixed amount of 0.5 to 6.0 pl, contains a self-dispersion pigment, an organic carboxylic acid salt, water and a water-soluble compound having a hydrophilicity-hydrophobicity coefficient of 0.26 or more, and has a surface tension of 34 mN/m or less, and when the total amount of inks applied to a fundamental matrix for forming an image is 5.0 μl/cm 2 or less, and the duty of an ink of a color applied to the fundamental matrix is 80% duty or more, the application of the ink of a color to the fundamental matrix is conducted within a range of 1 to 200 msec and at plural timings within the above range, and the amount of the ink of a color applied at each timing is controlled to 0.7 μl/cm 2 or less. |