	US 12,233,654 B2
	Recirculation of fluid within a fluidic ejection device
Mauricio Seras Franzoso, Sant Cugat del Valles (ES); Dorkaitz Alain Vazquez Fernandez, Sant Cugat del Valles (ES); and David Butinya Teixido, Sant Cugat del Valles (ES)
Assigned to Hewlett-Packard Development Company, L.P., Spring, TX (US)
Appl. No. 18/031,134
Filed by Hewlett-Packard Development Company, L.P., Spring, TX (US)
PCT Filed Oct. 15, 2020, PCT No. PCT/US2020/055731 § 371(c)(1), (2) Date Apr. 10, 2023, PCT Pub. No. WO2022/081158, PCT Pub. Date Apr. 21, 2022.
Prior Publication US 2023/0373222 A1, Nov. 23, 2023
Int. Cl. B41J 2/18 (2006.01); B41J 2/17 (2006.01); B41J 2/175 (2006.01)

CPC B41J 2/18 (2013.01) [B41J 2/1707 (2013.01); B41J 2/17556 (2013.01)]

15 Claims

1. A method, comprising:

generating a negative fluid pressure between a fluid supply and a first port of a fluidic ejection device;

generating a positive fluid pressure between the fluid supply and a second port of the fluidic ejection device; and

selectively activating a first priming pump connected to the first port in response to an indication that the first port is transitioning from an open state to a closed state, wherein the selective activation of the first priming pump causes the first port to remain in the open state and causes fluid within the fluidic ejection device to exit through the first port and recirculate along a fluid flow path.