Abstract: Embodiments described herein are systems for filling machines which use treatment materials contained in cartridges. Optionally, the machine is a dyeing machine, and the treatment material is ink. Some embodiments relate to a liquid management system for conveying a plurality of unique treatment liquids, comprising: a first receptacle adapted to receive a single cartridge, the receptacle having multiple conduits, each conduit configured to transport a unique liquid, and each conduit corresponding to a different position on a cartridge; a plurality of cartridges configured to contain a liquid, the cartridges each comprising a flow outlet located at a position in the cartridge corresponding to one of the conduits of the receptacle; wherein, when a filled cartridge is introduced into the receptacle, liquid may flow through the flow outlet and into one of the conduits of the receptacle.

Abstract: Controlling an ink flow to a print head includes using a diaphragm positioned within a pathway to obstruct the ink flow.

Abstract: In some examples, a system includes a printhead including a printer fluid nozzle, an air valve in fluid communication with a channel of the nozzle to: (1) create back pressure in the channel when the air valve is closed and printer fluid is ejected through the nozzle and (2) release back pressure in the channel when the air valve is open, an ejector to eject printer fluid through the nozzle to form a meniscus of printer fluid in the channel when the air valve is closed, a pressure sensor to measure pressure within the channel, and an indicator in electrical communication with the pressure sensor. The indicator can, for example, indicate whether there is an air leak in the channel by determining whether the pressure in the channel is within a predetermined pressure range after a predetermined idle time following the formation of the meniscus in the nozzle.

Abstract: Controlling an ink flow to a print head includes using a diaphragm positioned within a pathway to obstruct the ink flow.

Abstract: In some examples, a system includes a printhead including a printer fluid nozzle, an air valve in fluid communication with a channel of the nozzle to: (1) create back pressure in the channel when the air valve is closed and printer fluid is ejected through the nozzle and (2) release back pressure in the channel when the air valve is open, an ejector to eject printer fluid through the nozzle to form a meniscus of printer fluid in the channel when the air valve is closed, a pressure sensor to measure pressure within the channel, and an indicator in electrical communication with the pressure sensor. The indicator can, for example, indicate whether there is an air leak in the channel by determining whether the pressure in the channel is within a predetermined pressure range after a predetermined idle time following the formation of the meniscus in the nozzle.

Abstract: A printhead maintenance device includes a maintenance housing including a set of maintenance nozzles, an air controlling member, and a waste collector. The maintenance housing moves to selectively position the set of maintenance nozzles opposite a printhead including a nozzle surface having a plurality of nozzles to eject fluid. The set of maintenance nozzles provide fluid onto the nozzle surface of the printhead to remove residue therefrom. The air controlling member forms air flow paths to at least one of direct the fluid provided by the maintenance nozzles at an angle to the nozzle surface and direct the residue maintenance nozzles to the waste collector.

Abstract: A printhead maintenance device includes a maintenance housing including a set of maintenance nozzles, an air controlling member, and a waste collector. The maintenance housing moves to selectively position the set of maintenance nozzles opposite a printhead including a nozzle surface having a plurality of nozzles to eject fluid. The set of maintenance nozzles provide fluid onto the nozzle surface of the printhead to remove residue therefrom. The air controlling member forms air flow paths to at least one of direct the fluid provided by the maintenance nozzles at an angle to the nozzle surface and direct the residue maintenance nozzles to the waste collector.

Abstract: An ink supply system including a reservoir and a foam regulator. The reservoir is configured to hold a volume of ink and configured to be in fluid communication with a fluid ejection structure. The foam regulator is operable in a first state in which the foam regulator permits application of negative pressure through the foam regulator to apply negative pressure to the fluid ejection structure and to the reservoir, and a second state in which the foam regulator blocks passage of ink foam through the foam regulator.

Abstract: An ink supply system including a reservoir and a foam regulator. The reservoir is configured to hold a volume of ink and configured to be in fluid communication with a fluid ejection structure. The foam regulator is operable in a first state in which the foam regulator permits application of negative pressure through the foam regulator to apply negative pressure to the fluid ejection structure and to the reservoir, and a second state in which the foam regulator blocks passage of ink foam through the foam regulator.