US 12,291,033 B2
Recording method and recording apparatus
Yuko Hishida, Matsumoto (JP); Yusuke Mizutaki, Shiojiri (JP); and Miki Uchida, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION, (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Mar. 14, 2023, as Appl. No. 18/183,409.
Claims priority of application No. 2022-040314 (JP), filed on Mar. 15, 2022.
Prior Publication US 2023/0294405 A1, Sep. 21, 2023
Int. Cl. B41J 2/155 (2006.01); B41J 2/21 (2006.01); B41J 2/14 (2006.01)
CPC B41J 2/155 (2013.01) [B41J 2/2107 (2013.01); B41J 2002/14467 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A recording method comprising:
a discharging step of discharging a first ink and a second ink from a line head having a length equal to or longer than a recording width of a recording medium and allowing the inks to adhere to the recording medium, wherein
the line head includes a first line head and a second line head, the first line head includes a plurality of first unit heads aligned in a direction of the recording width of the recording medium, the second line head includes a plurality of second unit heads aligned in a direction of the recording width of the recording medium, the first unit heads include first nozzles and do not include a second nozzle, the second unit heads include second nozzles and do not include a first nozzle,
the line head includes portions having different inter-nozzle distances in the scanning direction of the first nozzle that discharges the first ink and the second nozzle that discharges the second ink,
the portions Include a portion Lmin having a distance Lmin in the scanning direction of the first nozzles that discharge the first ink and the second nozzles that discharge the second ink, and a portion Lmax having a distance Lmax in the scanning direction of the first nozzles that discharge the first ink and the second nozzles that discharge the second ink,
in the portion Lmin, there is no unit head between the first nozzles that discharge the first ink and the second nozzles that discharge the second ink,
in the portion Lmax, there is a unit head but there is no nozzle between the first nozzles that discharge the first ink and the second nozzles that discharge the second ink,
a distance in the scanning direction of the first unit head of the first nozzles that discharge the first ink and the second unit head of the second nozzles that discharge the second ink in the portion Lmin Is shorter than a distance in the scanning direction of the first unit head of the first nozzles that discharge the first ink and the second unit head of the second nozzles that discharge the second ink in the portion Lmax so that the distance Lmin is shorter than the distance Lmax,
the first ink and the second ink are not a white ink;
the first ink and the second ink contain color materials and inorganic oxide particles, and the color materials have compositions different from each other; and
the inorganic oxide particles contained in the first ink and the second ink are at least one or more selected from the group consisting of silica, alumina, zirconia, and ceria.