US 12,214,593 B2
Liquid discharge apparatus and head module
Masahiko Sato, Azumino (JP); Shunsuke Watanabe, Matsumoto (JP); and Shun Katsuie, Matsumoto (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by SEIKO EPSON CORPORATION, Tokyo (JP)
Filed on Jul. 5, 2022, as Appl. No. 17/810,685.
Claims priority of application No. 2021-112612 (JP), filed on Jul. 7, 2021.
Prior Publication US 2023/0010747 A1, Jan. 12, 2023
Int. Cl. B41J 2/145 (2006.01); B41J 2/15 (2006.01); B41J 2/21 (2006.01)
CPC B41J 2/145 (2013.01) [B41J 2/15 (2013.01); B41J 2/21 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A head module in which a first direction is a main scanning direction, comprising:
a first nozzle row including a first nozzle configured to discharge a liquid;
a second nozzle row including a second nozzle configured to discharge a liquid; and
a third nozzle row including a third nozzle configured to discharge a liquid, wherein
a distance P1 between the first nozzle row and the second nozzle row in the first direction and a distance P2 between the first nozzle row and the third nozzle row in the first direction are expressed as P1:P2=E1:O1 where a value E1 is a positive even number and a value O1 is a positive odd number satisfying O1>E1.