US 11,724,513 B2
Liquid circulation mechanism, liquid circulation device, and liquid discharging apparatus
Toshio Nakata, Matsumoto (JP); Yuichi Urabe, Shiojiri (JP); Kazushi Arafuka, Matsumoto (JP); Yuki Shiohara, Matsumoto (JP); and Munechika Otsuru, Matsumoto (JP)
Assigned to Seiko Epson Corporation, Tokyo (JP)
Filed by Seiko Epson Corporation, Tokyo (JP)
Filed on Jan. 26, 2022, as Appl. No. 17/649,011.
Claims priority of application No. 2021-012852 (JP), filed on Jan. 29, 2021.
Prior Publication US 2022/0242136 A1, Aug. 4, 2022
Int. Cl. B41J 2/18 (2006.01); B41J 2/175 (2006.01)
CPC B41J 2/18 (2013.01) [B41J 2/17556 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A liquid circulation mechanism comprising:
a supply flow path configured to supply liquid in the liquid supply source to the liquid discharging head; and
a collection flow path configured to collect the liquid in the liquid discharging head to a connection portion of the supply flow path, wherein
a branch portion, a plurality of flow paths branched at the branch portion, and a merging portion in which the plurality of flow paths are merged, are provided in at least one of the supply flow path between the connection portion and the liquid discharging head, and the collection flow path between the liquid discharging head and the connection portion,
a flow path switching portion configured to switch flow paths through which the liquid flows in the plurality of flow paths; and
pressure adjustment portions that are provided in the plurality of flow paths and open the flow paths when a pressure on the liquid discharging head side is equal to a predetermined pressure, wherein
the pressure adjustment portions have different predetermined pressures for opening the flow paths in the plurality of flow paths.