Ink jet printing method and ink jet printing apparatus

An ink jet printing method comprising:

• a metallic ink application step of ejecting a metallic ink composition containing a metallic pigment from a first ink jet head to apply the metallic ink composition onto a printing medium;
• a heating step of heating the metallic ink composition applied on the printing medium with an infrared heater, the infrared heater being disposed above a print side of the printing medium;
• and
• a coloring ink application step of ejecting a coloring ink composition containing a coloring material from a second ink jet head to apply the coloring ink composition onto the metallic ink composition on the printing medium,
• wherein each of the metallic ink composition and the coloring ink composition is a water-based ink or a solvent-based ink,
• in the heating step, the infrared heater irradiates the print side of the printing medium with infrared radiation,
• in the heating step, an organic solvent or water contained in the metallic ink composition is evaporated by heating by the infrared heater,
• the infrared heater, the first ink jet head, and the second ink jet head are each mounted in a same carriage, and the infrared heater is positioned between the first ink jet head and the second ink jet head, and
• the coloring ink composition is applied onto the metallic ink composition that is heated in the heating step.