US 12,109,812 B2
Ink jet printing method and ink jet printing apparatus
Tomoyuki Ushiyama, Chino (JP); Kei Hiruma, Chino (JP); Hiroaki Kida, Shiojiri (JP); Shintaro Asai, Matsumoto (JP); Masaru Terada, Suwa (JP); and Mitsunobu Nakatani, Shiojiri (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Jul. 30, 2021, as Appl. No. 17/389,528.
Claims priority of application No. 2020-130206 (JP), filed on Jul. 31, 2020.
Prior Publication US 2022/0032618 A1, Feb. 3, 2022
Int. Cl. B41J 2/05 (2006.01); C09D 11/322 (2014.01); B41J 2/15 (2006.01)
CPC B41J 2/05 (2013.01) [C09D 11/322 (2013.01); B41J 2/15 (2013.01)] 13 Claims
OG exemplary drawing
 
1. 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.