US 11,738,571 B2
Liquid discharge apparatus
Takahiro Kanegae, Shiojiri (JP); Nobuaki Ito, Shiojiri (JP); and Hiroyuki Hagiwara, Matsumoto (JP)
Assigned to SEIKO EPSON CORPORATION
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Dec. 13, 2021, as Appl. No. 17/643,862.
Claims priority of application No. 2020-206763 (JP), filed on Dec. 14, 2020.
Prior Publication US 2022/0184972 A1, Jun. 16, 2022
Int. Cl. B41J 3/54 (2006.01); B41J 2/14 (2006.01)
CPC B41J 3/543 (2013.01) [B41J 2/14201 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A liquid discharge apparatus comprising:
a plurality of head units that are arranged in a row in a first direction and that discharge liquid; and
a controller that controls an operation of discharge of liquid in the plurality of head units, wherein
the plurality of head units includes:
one or more first head units and
one or more second head units different from any the one or more first head units,
each of the one or more first head units including:
a first section,
a second section that is at a position different from a position of the first section in a first direction and that has a width less than a width of the first section in a second direction crossing the first direction,
a third section that is at a position different from the position of the first section in the first direction and that has a width less than the width of the first section in the second direction,
a first head which is provided across the first section and the second section and in which a plurality of nozzles are arranged,
a second head which is provided only in the first section and in which a plurality of nozzles are arranged,
a third head which is provided only in the first section and in which a plurality of nozzles are arranged, and
a fourth head which is provided across the first section and the third section and in which a plurality of nozzles are arranged,
each of the one or more second head units including:
a fourth section,
a fifth section that is at a position different from a position of the fourth section in the first direction and that has a width less than a width of the fourth section in the second direction,
a sixth section that is at a position different from the position of the fourth section in the first direction and the has a width less than the width of the fourth section in the second direction,
a fifth head which is provided across the fourth section and the fifth section and in which a plurality of nozzles are arranged, and
a sixth head which is provided across the fourth section and the sixth section and in which a plurality of nozzles are arranged, wherein
a≥b≥0, p≥1, q≥1,
where a is a number of pairs each consisting of two adjacent first head units among the one or more first head units,
b is a number of pairs each consisting of two adjacent second head units among the one or more second head units,
p is a number of first head units in the one or more first head units, and
q is a number of second head units in the one or more second head units.