Hewlett-Packard Development Company, L.p.

Jorge Millan Lafuente

Jeffrey L Thielman

Marta Coma Vives

Albert Crespi Serrano

David Butinya Teixido

Sheila Cabello Cabrera

Santiago Forcada Pardo

Andreu Cortes Vicens

A printing device and method is described comprising: selectively generating a negative fluid pressure between one of one or more printing fluid supplies and a first one of first and second ports of a printhead; selectively generating a positive fluid pressure between one of said printing fluid supplies and a second one of the first and second ports of the printhead; and providing a first pulsed signal to a first priming pump associated with a first one of the first and second ports, wherein the first one of said first and second ports of the printhead is opened under the control of said first priming pump, such that printing fluid within the printhead exits the printhead through the first one of the first and second ports.

Printing fluid recirculation

Disclosed herein is a print head maintenance assembly, a printing device and a method of controlling a print head maintenance assembly in a printing device. The print head maintenance assembly comprises a maintenance cartridge comprising a positioning flag, wherein the maintenance cartridge is movable along a maintenance path in a direction of movement; and a sensor to detect the positioning flag to determine the position of the maintenance cartridge along the maintenance path.

Print head maintenance assembly

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Sant Cugat del Valles, Spain

Jorge Millan Lafuente